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1. Electrochemical biosensor for detecting pathogenic bacteria based on a hybridization chain reaction and CRISPR-Cas12a

Author:
Xiu Liu; Shengjun Bu; Jingqi Feng; Hongguo Wei; Ze Wang; Xue Li; Hongyu Zhou; Xiuxia He; Jiayu Wan
Source:
Analytical and bioanalytical chemistry 2022 v.414 no.2 pp. 1073-1080
ISSN:
1618-2642
Subject:
Lachnospiraceae; Salmonella Typhimurium; analytical chemistry; bacteria; biosensors; electrochemistry; electrodes; electron transfer; hybridization chain reaction; oligonucleotides; polymers; single-stranded DNA
Abstract:
... In this study, Lba Cas12a (Cpf1) as one of the CRISPR systems from Lachnospiraceae bacterium was coupled with a hybridization chain reaction (HCR) to develop an electrochemical biosensor for detecting the pathogenic bacterium, Salmonella typhimurium. Autonomous cross-opening of functional DNA hairpin structures of HCR yielded polymer double-stranded DNA wires consisting of numerous single-stranded ...
DOI:
10.1007/s00216-021-03733-6

2. Intensified inactivation efficacy of pulsed ohmic heating for pathogens in soybean milk due to sodium lactate

Author:
Eun-Rae Cho; Dong-Hyun Kang
Source:
Food control 2022 v.137 pp. 108936
ISSN:
0956-7135
Subject:
Escherichia coli O157; Listeria monocytogenes; bacteria; cell membranes; color; corrosion; electric current; electrical conductivity; electrodes; electrolytes; food safety; heat; ohmic heating; pH; propidium; sodium lactate; soymilk; transmission electron microscopy
Abstract:
... Pulsed ohmic heating (POH) is a promising alternative to conventional heat processing for microbial safety. It has been reported that the efficacy of POH depends on the concentration of electrolytes. This research investigated the effect of sodium lactate as an electrolyte on the efficacy of POH with respect to the heating rate and inactivation of pathogens in PBS and soybean milk. When PBS and so ...
DOI:
10.1016/j.foodcont.2022.108936

3. Proteomic analysis of the electron uptake pathway of Rhodopseudomonas palustris CGA009 under different cathodic potentials

Author:
Xinyi Liao; Qin Pan; Xiaochun Tian; Xuee Wu; Feng Zhao
Source:
Process biochemistry 2022 v.115 pp. 42-48
ISSN:
1359-5113
Subject:
Rhodopseudomonas palustris; ambient temperature; bacteria; biosynthesis; carbon dioxide; electrodes; electron transfer; electron transport chain; electrosynthesis; energy; greenhouse gases; photosynthetic reaction centers; proteomics; ubiquinones; value added
Abstract:
... Microbial electrosynthesis can convert greenhouse gas CO₂ into value-added chemicals at room temperature and mild conditions, and the efficiency of its reaction is closely dependent on the electrode potential and electron transport chain-related functional proteins. In this study, the photosynthetic bacterium Rhodopseudomonas palustris CGA009 was used to explore CO₂ bioreduction behavior at differ ...
DOI:
10.1016/j.procbio.2022.01.026

4. Biofilm removal efficacy using direct electric current in cross-flow ultrafiltration processes for water treatment

Author:
Sarah Kerdi; Adnan Qamar; Johannes S. Vrouwenvelder; Noreddine Ghaffour
Source:
Journal of membrane science 2021 v.620 pp. 118808
ISSN:
0376-7388
Subject:
bacteria; biofilm; biofouling; biomass; cell structures; chlorine; electric current; electrochemistry; electrodes; microbubbles; pH; platinum; sodium hydroxide; sodium hypochlorite; synergism; tomography; ultrafiltration; water treatment
Abstract:
... Biofouling of membranes in water treatment is considered as one of the major practical problems. A novel and an efficient approach for cleaning biofilm grown on the membrane surface is proposed by applying a direct electric current (124 mA, 90 s) through platinum electrodes inside a cross-flow ultrafiltration channel. Depending on the electrochemical reactions occurring at the electrodes, either c ...
DOI:
10.1016/j.memsci.2020.118808

5. Combined negative dielectrophoresis with a flexible SERS platform as a novel strategy for rapid detection and identification of bacteria

Author:
Ariadna B. Nowicka; Marta Czaplicka; Tomasz Szymborski; Agnieszka Kamińska
Source:
Analytical and bioanalytical chemistry 2021 v.413 no.7 pp. 2007-2020
ISSN:
1618-2642
Subject:
Raman spectroscopy; analytical chemistry; apple juice; bacteria; diagnostic techniques; dielectrophoresis; electrodes; molecular biology; rapid methods; urine
Abstract:
... Surface-enhanced Raman spectroscopy (SERS) is a vibrational method successfully applied in analytical chemistry, molecular biology and medical diagnostics. In this article, we demonstrate the combination of the negative dielectrophoretic (nDEP) phenomenon and a flexible surface-enhanced Raman platform for quick isolation (3 min), concentration and label-free identification of bacteria. The platfor ...
DOI:
10.1007/s00216-021-03169-y

6. Highly selective impedimetric determination of Haemophilus influenzae protein D using maze-like boron-doped carbon nanowall electrodes

Author:
Mateusz Brodowski; Marcin Kowalski; Marta Skwarecka; Katarzyna Pałka; Michał Skowicki; Anna Kula; Tomasz Lipiński; Anna Dettlaff; Mateusz Ficek; Jacek Ryl; Karolina Dziąbowska; Dawid Nidzworski; Robert Bogdanowicz
Source:
Talanta 2021 v.221 pp. 121623
ISSN:
0039-9140
Subject:
Bordetella parapertussis; Haemophilus influenzae; Streptococcus pneumoniae; Streptococcus pyogenes; X-ray photoelectron spectroscopy; antibodies; antigen detection; antigens; bacteria; carbon; chemical bonding; detection; diazonium compounds; dielectric spectroscopy; electrochemistry; electrodes; immunosensors; sampling; scanning electron microscopy; testing; voltammetry
Abstract:
... This study reports a novel impedimetric immunosensor for protein D detection in purified and bacterial (Haemophilus influenzae, Hi) samples. The detection was based on antigen recognition by anti-protein D antibodies (apD) immobilised at the maze-like boron-doped carbon nanowall electrodes (B:CNW). The B:CNW electrodes were synthesised, and their surface was characterised by scanning electron micr ...
DOI:
10.1016/j.talanta.2020.121623

7. Synergy between indigenous bacteria and extracellular electron shuttles enhances transformation and mobilization of Fe(III)/As(V)

Author:
Jia Wang; Zuoming Xie; Yanxin Wang; Yang Yang; Mengna Chen
Source:
Science of the total environment 2021 v.783 pp. 147002
ISSN:
0048-9697
Subject:
arsenates; bacteria; basins; biogeochemical cycles; electrodes; electron transfer; environment; genes; glutathione; groundwater; metabolism; pyruvic acid
Abstract:
... The reduction of Fe(III) by metal-reducing bacteria through extracellular electron transfer (EET) is a critical link in the biogeochemical cycle of As/Fe, and humic substances are believed to play a role in this process. In this study, the indigenous As-resistant bacterium Bacillus D2201 isolated from the Datong Basin was responsible for the valence transition of Fe and As in the groundwater envir ...
DOI:
10.1016/j.scitotenv.2021.147002

8. A Comprehensive Understanding of Electro-Fermentation

Author:
Drishti Dinesh Bhagchandanii; Rishi Pramod Babu; Jayesh M. Sonawane; Namita Khanna; Soumya Pandit; Dipak A. Jadhav; Santimoy Khilari; Ram Prasad
Source:
Fermentation 2020 v.6 no.3 pp. -
ISSN:
2311-5637
Subject:
bacteria; biochemical pathways; biomass production; carbon; design; economic sustainability; electrochemistry; electrodes; electrons; fermentation; fermenters; industrial applications; methane production; mixed culture; pH; protons; strains
Abstract:
... Electro-fermentation (EF) is an upcoming technology that can control the metabolism of exoelectrogenic bacteria (i.e., bacteria that transfer electrons using an extracellular mechanism). The fermenter consists of electrodes that act as sink and source for the production and movement of electrons and protons, thus generating electricity and producing valuable products. The conventional process of f ...
DOI:
10.3390/fermentation6030092

9. A novel impedimetric biosensor based on the antimicrobial activity of the peptide nisin for the detection of Salmonella spp.

Author:
Francesca Malvano; Roberto Pilloton; Donatella Albanese
Source:
Food chemistry 2020 v.325 pp. 126868
ISSN:
0308-8146
Subject:
Salmonella; antimicrobial peptides; antimicrobial properties; bacteria; biosensors; cell membranes; detection limit; dielectric spectroscopy; electrochemistry; electrodes; gold; microbial detection; milk; nisin
Abstract:
... Nisin is an antimicrobial peptide with bacterial, fungicidal, virucidal properties, attacking bacteria and destroying the cell membranes. Thanks to its stability to hard conditions, it is a candidate for the use as molecular recognition elements in biosensing platform. In this work, the use of nisin as a biological molecule for the development of a sensitive biosensor for bacteria detection is rep ...
DOI:
10.1016/j.foodchem.2020.126868

10. A simple, inexpensive, and rapid method to assess antibiotic effectiveness against exoelectrogenic bacteria

Author:
Yang Gao; Jihyun Ryu; Lin Liu; Seokheun Choi
Source:
Biosensors & bioelectronics 2020 v.168 pp. 112518
ISSN:
0956-5663
Subject:
Pseudomonas aeruginosa; antibiotic resistance; bacteria; bacterial growth; biochemical pathways; biosensors; electricity; electrodes; electrons; energy; gentamicin; hospitals; metabolism; microbial fuel cells; minimum inhibitory concentration; phenotype; rapid methods
Abstract:
... A sufficiently fast and simple antimicrobial susceptibility testing (AST) is urgently required to guide effective antibiotic usages and to surveil the antimicrobial resistance rate. Here, we establish a rapid, quantitative, and high-throughput phenotypic AST by measuring electrons transferred from the interiors of microbial cells to external electrodes. Because the transferred electrons are based ...
DOI:
10.1016/j.bios.2020.112518

11. Accumulation of sulfonamide resistance genes and bacterial community function prediction in microbial fuel cell-constructed wetland treating pharmaceutical wastewater

Author:
Hua Li; Yun Cai; Zuli Gu; Yu-Li Yang; Shuai Zhang; Xiao-Li Yang; Hai-Liang Song
Source:
Chemosphere 2020 v.248 pp. 126014
ISSN:
0045-6535
Subject:
ammonium nitrogen; antibiotic resistance genes; bacteria; bacterial communities; chemical oxygen demand; constructed wetlands; electrodes; fuels; ibuprofen; metagenomics; microbial fuel cells; personal care products; prediction; sulfadiazine; toxicity; wastewater
Abstract:
... Microbial fuel cell constructed wetlands (CW-MFCs) with different circuit operation conditions and hydraulic retention time (HRT) were constructed to evaluate their ability to remove and accumulate pharmaceutical and personal care products (PPCPs) (sulfadiazine (SDZ), carbamazepine (CBZ), naproxen (NPX) and ibuprofen (IBP)) during four months running process. The abundance level of corresponding s ...
DOI:
10.1016/j.chemosphere.2020.126014

12. An ultrasensitive biosensor for fast detection of Salmonella using 3D magnetic grid separation and urease catalysis

Author:
Yu Hou; Wei Tang; Wuzhen Qi; Xiaojun Guo; Jianhan Lin
Source:
Biosensors & bioelectronics 2020 v.157 pp. 112160
ISSN:
0956-5663
Subject:
Salmonella; ammonium carbonate; bacteria; bacterial contamination; biosensors; catalytic activity; detection limit; electrodes; films (materials); food contamination; foodborne illness; gears; iron; magnetic materials; magnetism; milk; monoclonal antibodies; nanogold; nanoparticles; organ-on-a-chip; polyclonal antibodies; screening; silver; silver chloride; urea; urease; virulent strains; voltammetry; washing
Abstract:
... Screening of pathogenic bacteria plays a crucial role in preventing foodborne disease outbreaks. In this study, an ultrasensitive biosensor was developed for fast detection of Salmonella using self-assembled magnetic nanoparticle (MNP) chains for continuous-flow separation of Salmonella from large-volume sample, urease coated gold nanoparticles (GNPs) for specific labelling of Salmonella and effic ...
DOI:
10.1016/j.bios.2020.112160

13. Biomass-Derived Carbon for Electrode Fabrication in Microbial Fuel Cells: A Review

Author:
Wei Yang; Shaowei Chen
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.14 pp. 6391-6404
ISSN:
1520-5045
Subject:
bacteria; biomass; carbon; catalysts; electrodes; microbial fuel cells
Abstract:
... Natural biomass is a promising candidate for the preparation of heteroatom-doped carbons that can be used as effective electrode catalysts for microbial fuel cells (MFCs), due to its intriguing features, such as high abundance, rich heteroatom contents, and low cost. In this review, we summarize recent process in the design and fabrication of MFC electrodes based on biocarbons; discuss the effects ...
DOI:
10.1021/acs.iecr.0c00041

14. Cellulase-Linked Immunomagnetic Microbial Assay on Electrodes: Specific and Sensitive Detection of a Single Bacterial Cell

Author:
Dmitrii Pankratov; Mads Bendixen; Stepan Shipovskov; Ulrich Gosewinkel; Elena E. Ferapontova
Source:
Analytical chemistry 2020 v.92 no.18 pp. 12451-12459
ISSN:
1520-6882
Subject:
Bacillus subtilis; Escherichia coli; Pantoea agglomerans; Pseudomonas putida; Salmonella Enteritidis; Staphylococcus aureus; analytical chemistry; antibodies; bacteria; electrical conductivity; electrochemistry; electrodes; endo-1,4-beta-glucanase; human health; magnetism; milk; oligonucleotides; tap water
Abstract:
... Pathogen-associated infections represent one of the major threats to human health and require reliable methods for immediate and robust identification of pathogenic microorganisms. Here, an inexpensive cellulase-linked immunomagnetic methodology was developed for the specific and ultrasensitive analysis of bacteria at their single-cell levels within a 3 h procedure. Detection of a model bacterium, ...
DOI:
10.1021/acs.analchem.0c02262

15. Change in soil ion content and soil water-holding capacity during electro-bioremediation of petroleum contaminated saline soil

Author:
Meng Zhang; Penghong Guo; Bo Wu; Shuhai Guo
Source:
Journal of hazardous materials 2020 v.387 pp. 122003
ISSN:
0304-3894
Subject:
bacteria; biodegradation; bioremediation; electric field; electrodes; equations; ions; petroleum; saline soils; soil water; soil water retention; synergism; water content; water supply
Abstract:
... This study investigated changes in soil ion content and soil water-holding capacity during electro-bioremediation (EK-Bio) of petroleum contaminated saline soil (ion content of 3.92 g/kg). The results indicated that the soil ions surrounded the electrodes with increasing time, thus changing the soil water-holding capacity. According to the Van Genuchten model fitting results, the soil residual wat ...
DOI:
10.1016/j.jhazmat.2019.122003

16. Changes of microbial community and activity under different electric fields during electro-bioremediation of PAH-contaminated soil

Author:
Fengmei Li; Shuhai Guo; Sa Wang; Mingyang Zhao
Source:
Chemosphere 2020 v.254 pp. 126880
ISSN:
0045-6535
Subject:
Actinobacteria; bacteria; bioremediation; community structure; degradation; electric field; electric potential difference; electrodes; fungi; microbial biomass; microbial communities; phospholipid fatty acids; pollutants; polluted soils; polycyclic aromatic hydrocarbons; soil pH; technology; temperature; water content
Abstract:
... Electro-bioremediation is a promising technology for remediation of soil contaminated with persistent organic compounds such as polycyclic aromatic hydrocarbons (PAHs). During electro-bioremediation, electrical fields have been shown to increase pollutant degradation. However, it remains unclear whether there is an optimal strength for the electrical field applied that is conductive to the maximum ...
DOI:
10.1016/j.chemosphere.2020.126880

17. Deteriorated biofilm-forming capacity and electroactivity of Shewanella oneidnsis MR-1 induced by insertion sequence (IS) elements

Author:
Lei Cheng; Di Min; Dong-Feng Liu; Ting-Ting Zhu; Kai-Li Wang; Han-Qing Yu
Source:
Biosensors & bioelectronics 2020 v.156 pp. 112136
ISSN:
0956-5663
Subject:
Shewanella oneidensis; bacteria; bioelectrochemistry; biofilm; biosensors; chromium; electrodes; genome; models; mutants; mutation; phenotype; transposons
Abstract:
... Shewanella oneidensis MR-1, a model species of exoelectrogenic bacteria (EEB), has been widely applied in bioelectrochemical systems. Biofilms of EEB grown on electrodes are essential in governing the current output and power density of bioelectrochemical systems. The MR-1 genome is exceptionally dynamic due to the existence of a large number of insertion sequence (IS) elements. However, to date, ...
DOI:
10.1016/j.bios.2020.112136

18. Dielectrophoresis-based microwire biosensor for rapid detection of Escherichia coli K-12 in ground beef

Author:
Won Choi; Yeo Wool Min; Kwang Yeon Lee; Soojin Jun; Hyeon Gyu Lee
Source:
Lebensmittel-Wissenschaft + Technologie 2020 v.132 pp. 109230
ISSN:
0023-6438
Subject:
Escherichia coli K12; antibodies; bacteria; biosensors; bovine serum albumin; dielectrophoresis; electric field; electrodes; fluorescence; ground beef; pathogens; phosphates; rapid methods; surface antigens
Abstract:
... By combining a functionalized microwire sensor with a dielectrophoresis (DEP) technique, a rapid and accurate detection method for bacterial pathogens was developed and demonstrated. The gold-tungsten microsensor (sensing diameter, 25 μm) was functionalized with specific Escherichia coli (E. coli) antibodies against surface antigens to capture E. coli bacterial cells from phosphate buffer saline ( ...
DOI:
10.1016/j.lwt.2020.109230

19. Dielectrophoretic separation of monocytes from cancer cells in a microfluidic chip using electrode pitch optimization

Author:
Omid Zahedi Siani; Mohammad Zabetian Targhi; Mahdi Sojoodi; Mansoureh Movahedin
Source:
Bioprocess and biosystems engineering 2020 v.43 no.9 pp. 1573-1586
ISSN:
1615-7591
Subject:
DNA; RNA; T-lymphocytes; bacteria; bioprocessing; chemical analysis; design; dielectrophoresis; electric field; electric potential difference; electrical properties; electrodes; flow; forces; height; hydrodynamics; lymphocytic leukemia; mathematical models; monocytes; neoplasm cells; organ-on-a-chip; purity; separation; sorting
Abstract:
... This study proposes a microfluidic device capable of separating monocytes from a type of cancer cell that is called T-cell acute lymphoblastic leukemia (RPMI-8402) in a continuous flow using negative and positive dielectrophoretic forces. The use of both the hydrodynamic and dielectrophoretic forces allows the separation of RPMI-8402 from monocytes based on differences in their intrinsic electrica ...
DOI:
10.1007/s00449-020-02349-x

20. Direct interspecies electron transfer stimulated by granular activated carbon enhances anaerobic methanation efficiency from typical kitchen waste lipid-rapeseed oil

Author:
Jing Zhang; Rongtang Zhang; Hongyu Wang; Kai Yang
Source:
Science of the total environment 2020 v.704 pp. 135282
ISSN:
0048-9697
Subject:
Methanosarcina; Syntrophomonas; acidification; activated carbon; anaerobic digestion; bacteria; electrodes; electron transfer; kitchen waste; long chain fatty acids; metabolism; methane; methane production; methanogens; microbial communities; organic matter; palmitates; rapeseed oil
Abstract:
... Due to long-chain fatty acids (LCFAs) and acidification, rapeseed oil as a typical lipid in kitchen waste is difficult to be biodegraded by anaerobic digestion. It has been reported that incorporation of some conductive materials into reactors treating complex organic matter could enhance reactor performance. In this study, the aim was to study this possibility of application of granular activated ...
DOI:
10.1016/j.scitotenv.2019.135282

21. Early stage detection of Staphylococcus epidermidis biofilm formation using MgZnO dual-gate TFT biosensor

Author:
Guangyuan Li; Yifan Wu; Yuxuan Li; Yuzhi Hong; Xilin Zhao; Pavel Ivanoff Reyes; Yicheng Lu
Source:
Biosensors & bioelectronics 2020 v.151 pp. 111993
ISSN:
0956-5663
Subject:
Staphylococcus epidermidis; antibiotic resistance; antibiotics; bacteria; bacterial adhesion; bacterial infections; biofilm; biosensors; electrodes; films (materials); gentian violet; health care workers; magnesium; medical treatment; nanomaterials; transistors; zinc oxide
Abstract:
... Early stage detection of biofilm formation is an important aspect of microbial research because once formed, biofilms show serious tolerance to antibiotics in contrast to the free-floating bacteria, which significantly increases the difficulty for clinical treatment of bacterial infections. The early stage detection technology is desired to improve the efficiency of medical treatments. In this wor ...
DOI:
10.1016/j.bios.2019.111993

22. Electrochemical biosensor for rapid detection of bacteria based on facile synthesis of silver wire across electrodes

Author:
Ye Feng; Dan Zhou; Lujia Gao; Fengjiao He
Source:
Biosensors & bioelectronics 2020 v.168 pp. 112527
ISSN:
0956-5663
Subject:
Escherichia coli; Listeria innocua; Pseudomonas aeruginosa; Salmonella Enteritidis; Staphylococcus aureus; Streptococcus pneumoniae; bacteria; biomarkers; biosensors; detection limit; electrical properties; electrochemistry; electrodes; food safety; monitoring; nanogold; nitrogen; public health; quartz; rapid methods; ribosomal RNA; signal transduction; signal-to-noise ratio; silver
Abstract:
... The early detection of bacteria is of critical importance in addressing serious public health problems. Here, an electrochemical biosensor for rapid detection of bacteria based on facile synthesis of silver wire across electrodes was constructed. High-variable region of 16S rRNA of bacteria was used as biomarker. Polymerase-free synthesis of silver wire was introduced into electrochemical signal t ...
DOI:
10.1016/j.bios.2020.112527

23. Electrochemical removal of levofloxacin using conductive graphene/polyurethane particle electrodes in a three-dimensional reactor

Author:
Cuicui Guo; Haiyang Liu; Chengzhi Wang; Jianchen Zhao; Wenjun Zhao; Nan Lu; Jiao Qu; Xing Yuan; Ya-nan Zhang
Source:
Environmental pollution 2020 v.260 pp. 114101
ISSN:
0269-7491
Subject:
aeration; bacteria; electric potential difference; electrochemistry; electrodes; electrolytes; graphene; levofloxacin; luminescence; oxidation; pH; polymerization; polyurethanes; pyrroles; sodium sulfate; structure-activity relationships; toxicity; wastewater treatment
Abstract:
... The conductive polyurethane/polypyrrole/graphene (CPU/PPy/Gr) particle electrode was prepared by an in-situ oxidative polymerization method and used as particle electrodes to degrade levofloxacin (LEV) in a three-dimensional electrode reactor. The prepared CPU/PPy/Gr electrode was characterized systematically and the effects of initial pH, initial LEV concentration, aeration volume, voltage, and e ...
DOI:
10.1016/j.envpol.2020.114101

24. Evaluation of Enterococcus faecium NRRL B-2354 as a potential surrogate of Salmonella in packaged paprika, white pepper and cumin powder during radio frequency heating

Author:
Samet Ozturk; Fanbin Kong; Rakesh K. Singh
Source:
Food control 2020 v.108 no. pp. 106833
ISSN:
0956-7135
Subject:
Enterococcus faecium; Piper nigrum; Salmonella; aluminum; bacteria; color; cumin; dielectric heating; electrodes; flavorings; food pathogens; geometry; heat; heat tolerance; low moisture foods; paprika; pasteurization; polystyrenes; powders; product quality; radio waves; temperature; vegetables; water activity
Abstract:
... Salmonella contamination of various seasonings and spices has occurred in the last decade. Radio frequency (RF) heating has been shown to be a potential alternative inactivation method for pathogens in low moisture foods (LMF), including spices and vegetable powders. This study aimed to (1) determine the thermal resistance (D and z values) of Salmonella and Enterococcus faecium(E. faecium) NRRL B- ...
DOI:
10.1016/j.foodcont.2019.106833
CHORUS:
10.1016/j.foodcont.2019.106833

25. Global transcriptional analysis of Geobacter sulfurreducens under palladium reducing conditions reveals new key cytochromes involved

Author:
Alberto Hernández-Eligio; Aurora M. Pat-Espadas; Leticia Vega-Alvarado; Manuel Huerta-Amparán; Francisco J. Cervantes; Katy Juárez
Source:
Applied microbiology and biotechnology 2020 v.104 no.9 pp. 4059-4069
ISSN:
0175-7598
Subject:
Geobacter sulfurreducens; acetates; bacteria; cytochromes; data collection; electrodes; electron transfer; energy metabolism; fimbriae; gene expression regulation; genes; iron; mutants; palladium; protein synthesis; quantitative polymerase chain reaction; reverse transcriptase polymerase chain reaction; structural proteins; transcription (genetics); transcriptomics
Abstract:
... Geobacter sulfurreducens is capable of reducing Pd(II) to Pd(0) using acetate as electron donor; however, the biochemical and genetic mechanisms involved in this process have not been described. In this work, we carried out transcriptome profiling analysis to identify the genes involved in Pd(II) reduction in this bacterium. Our results showed that 252 genes were upregulated while 141 were downreg ...
DOI:
10.1007/s00253-020-10502-5

26. Growth of large-scale MoS₂ nanosheets on double layered ZnCo₂O₄ for real-time in situ H₂S monitoring in live cells

Author:
Veerappan Mani; Shanthi Selvaraj; Nithiya Jeromiyas; Sheng-Tung Huang; Hiroya Ikeda; Yasuhiro Hayakawa; Suru Ponnusamy; Chellamuthu Muthamizhchelvan; Khaled Nabil Salama
Source:
Journal of materials chemistry B 2020 v.8 no.33 pp. 7453-7465
ISSN:
2050-7518
Subject:
bacteria; carbon; catalytic activity; cell viability; detection limit; electrochemistry; electrodes; hydrogen sulfide; molybdenum disulfide; monitoring; nanosheets; pH; silver; silver chloride
Abstract:
... There is an urgent need to develop in situ sensors that monitor the continued release of H₂S from biological systems to understand H₂S-related pathology and pharmacology. For this purpose, we have developed a molybdenum disulfide supported double-layered zinc cobaltite modified carbon cloth electrode (MoS₂–ZnCo₂O₄–ZnCo₂O₄) based electrocatalytic sensor. The results of our study suggest that the Mo ...
DOI:
10.1039/d0tb01162b

27. Impedimetric biosensor fabricated with affinity peptides for sensitive detection of Escherichia coli O157:H7

Author:
Fan Shi; Lingfeng Gan; Yibing Wang; Ping Wang
Source:
Biotechnology letters 2020 v.42 no.5 pp. 825-832
ISSN:
0141-5492
Subject:
Escherichia coli O157; bacteria; binding capacity; biosensors; cysteine; detection limit; dielectric spectroscopy; electrodes; glycine (amino acid); gold; pathogens; peptide libraries; virulent strains
Abstract:
... OBJECTIVE: To effectively and conveniently detect pathogenic bacteria, this study aimed to develop label-free biosensors fabricated affinity peptides that can recognize targeted bacteria strains and enable precise quantitative detections. RESULTS: A 12-mer peptide with high binding affinity toward Escherichia coli O157:H7 was discovered by biopanning of phage-displayed peptide library. The peptide ...
DOI:
10.1007/s10529-020-02817-0

28. Impedimetric electronic tongue based on molybdenum disulfide and graphene oxide for monitoring antibiotics in liquid media

Author:
Murilo Henrique M. Facure; Rodrigo Schneider; Danilo M. dos Santos; Daniel S. Correa
Source:
Talanta 2020 v.217 pp. 121039
ISSN:
0039-9140
Subject:
adverse effects; antibiotic resistance; bacteria; cloxacillin; detection limit; electrodes; electronic tongue; erythromycin; gold; graphene oxide; human health; humans; liquids; molybdenum disulfide; monitoring; pollutants; principal component analysis; river water; streptomycin; sulfates; tetracycline; urine
Abstract:
... Antibiotics are considered emerging pollutants which indiscriminate use has led to the development of antibiotic-resistant bacteria, while their improper disposal has caused adverse effects to the environment and human health. Thus, the development of devices or techniques capable of detecting antibiotics with high sensitivity, low detection limits, and reasonable cost becomes of prime importance. ...
DOI:
10.1016/j.talanta.2020.121039

29. Metabolic engineering of a novel strain of electrogenic bacterium Arcobacter butzleri to create a platform for single analyte detection using a microbial fuel cell

Author:
Lukasz Szydlowski; Tammy C.T. Lan; Noriko Shibata; Igor Goryanin
Source:
Enzyme and microbial technology 2020 v.139 pp. 109564
ISSN:
0141-0229
Subject:
Arcobacter butzleri; CRISPR-Cas systems; acetate kinase; acetates; bacteria; biochemical pathways; carbon; electric current; electricity generation; electrodes; energy metabolism; genome; lactic acid; microbial fuel cells
Abstract:
... Electrogenic bacteria metabolize organic substrates by transferring electrons to the external electrode, with subsequent electricity generation. In this proof-of-concept study, we present a novel strain of a known, electrogenic Arcobacter butzleri that can grow primarily on acetate and lactate and its electric current density is positively correlated (R² = 0.95) to the COD concentrations up to 200 ...
DOI:
10.1016/j.enzmictec.2020.109564

30. Microbial current production from Streptococcus mutans correlates with biofilm metabolic activity

Author:
Divya Naradasu; Alexis Guionet; Waheed Miran; Akihiro Okamoto
Source:
Biosensors & bioelectronics 2020 v.162 pp. 112236
ISSN:
0956-5663
Subject:
Streptococcus mutans; bacteria; biochemical pathways; biofilm; biosensors; cell adhesion; dielectric spectroscopy; drugs; electrochemistry; electrodes; electron transfer; fluorescent proteins; genes; glucose; hydrogen; mass spectrometry; nitrogen; pathogens; physiological response; plankton; protein synthesis; stable isotopes; triclosan
Abstract:
... Once pathogens form a biofilm, they become more tolerant to drugs and quicker to recover from physical removal than planktonic cells. Because such robustness of a biofilm is associated with the active metabolism of its constituent microbes, establishment of a direct assay quantifying biofilm's metabolic activity is important for developing antibiofilm substrates and techniques. Current production ...
DOI:
10.1016/j.bios.2020.112236

31. Microfluidic Microbial Bioelectrochemical Systems: An Integrated Investigation Platform for a More Fundamental Understanding of Electroactive Bacterial Biofilms

Author:
Stéphane Pinck; Lucila Martínez Ostormujof; Sébastien Teychené; Benjamin Erable
Source:
Microorganisms 2020 v.8 no.11 pp. -
ISSN:
2076-2607
Subject:
bacteria; bioelectrochemistry; biofilm; electrodes; electrolytes; electron transfer; hydrodynamics; microfluidic technology; microscopy; models; monitoring; nutrients; objectives; pH; researchers; spectroscopy
Abstract:
... It is the ambition of many researchers to finally be able to close in on the fundamental, coupled phenomena that occur during the formation and expression of electrocatalytic activity in electroactive biofilms. It is because of this desire to understand that bioelectrochemical systems (BESs) have been miniaturized into microBES by taking advantage of the worldwide development of microfluidics. Mic ...
DOI:
10.3390/microorganisms8111841

32. Mutual effect between electrochemically active bacteria (EAB) and azo dye in bio-electrochemical system (BES)

Author:
Dan Cui; Min-Hua Cui; Bin Liang; Wen-Zong Liu; Zi-En Tang; Ai-Jie Wang
Source:
Chemosphere 2020 v.239 pp. 124787
ISSN:
0045-6535
Subject:
Geobacter; alizarin; azo dyes; bacteria; biofilm; decolorization; electricity; electrochemistry; electrodes; genes; microbial communities; microbial fuel cells; ribosomal RNA; silver; silver chloride; toxicity; wastewater treatment
Abstract:
... Herein, the mutual effect between azo dye and the performance of electrochemically active bacteria (EAB) is investigated in detail, which is crucial to understand and control the bio-electrochemical systems (BESs) operation for azo dye containing wastewater treatment. EAB is enriched at controlled potential of −0.2 V vs Ag/AgCl in single-chamber BESs. Over 95% azo dye (alizarin yellow R (AYR)) was ...
DOI:
10.1016/j.chemosphere.2019.124787

33. Nitrate removal from groundwater in Casablanca region (Morocco) by electrocoagulation

Author:
Mohammed Amarine; Brahim Lekhlif; El Mostafa Mliji; Jamal Echaabi
Source:
Groundwater for sustainable development 2020 v.11 pp. 100452
ISSN:
2352-801X
Subject:
X-ray diffraction; aluminum; bacteria; chlorides; denitrification; drinking water; electric potential difference; electrocoagulation; electrodes; groundwater; nitrates; sludge; sulfates; surface area; sustainable development; Morocco
Abstract:
... In this work, the denitrification of nitrate-contaminated groundwater by electrocoagulation (EC) method using aluminum electrodes has been studied for the production of drinking water. Tests were carried out on four samples collected from the Casablanca-Settat region. EC was investigated for a fixed applied voltage (30 V), the submerged surface area of each electrode plate (33.75 cm²) and the inte ...
DOI:
10.1016/j.gsd.2020.100452

34. Simultaneous solid-liquid separation and wastewater disinfection using an electrochemical dynamic membrane filtration system

Author:
Qian Lei; Junjian Zheng; Jinxing Ma; Xueye Wang; Zhichao Wu; Zhiwei Wang
Source:
Environmental research 2020 v.180 pp. 108861
ISSN:
0013-9351
Subject:
bacteria; catalase; cell membranes; cleaning; cytosol; disinfection; electric potential difference; electrochemistry; electrodes; fouling; hydrogen peroxide; hydroxyl radicals; microfiltration; oxidation; oxidative stress; potassium; sewage; superoxide dismutase; wastewater; wastewater treatment
Abstract:
... An electrochemical dynamic membrane filtration (EDMF) system for simultaneous solid-liquid separation (also protecting electrodes against fouling) and sewage disinfection was developed. At a low voltage of 2.5 V, efficient disinfection performance was achieved in the EDMF, with ~100% log removal efficiency (no detectable bacteria in the effluent). Results also demonstrated that the EDMF system, op ...
DOI:
10.1016/j.envres.2019.108861

35. Solar driven self−sustainable photoelectrochemical bacteria inactivation in scale−up reactor utilizing large−scale fabricable Ti/MoS2/MoOx photoanode

Author:
Guan Zhang; Zhenghua Zhang; Dehua Xia; Yi Qu; Wenqian Wang
Source:
Journal of hazardous materials 2020 v.392 pp. 122292
ISSN:
0304-3894
Subject:
Escherichia coli; absorbance; bacteria; cuprous oxide; electric current; electrochemistry; electrodes; electrolytes; hydrogen peroxide; irradiation; lamps; light; molybdenum disulfide; oxidation; photochemistry; pollutants; sodium chloride; solar collectors; solar radiation; superoxide anion; titanium dioxide; wastewater; water treatment
Abstract:
... Here we present photoelectrochemical (PEC) bacterial inactivation properties of large−scale fabricable Ti/MoS₂/MoOₓ photoanode with a strong solar light absorbance capacity. Specifically, by thermal oxidation of the as−prepared MoS₂/Ti film at 250 °C for 15 min in aerobic condition, the visible light performance of photocurrent generation and Escherichia coli (E. coli) inactivation are markedly en ...
DOI:
10.1016/j.jhazmat.2020.122292

36. Studies on expression levels of pil Q and fli P genes during bio-electrogenic process in Kluyvera georgiana MCC 3673

Author:
Bhim Sen Thapa; T. S. Chandra
Source:
3 Biotech 2020 v.10 no.2 pp. 73
ISSN:
2190-572X
Subject:
Kluyvera georgiana; appendages; bacteria; bioelectricity; biofilm; culture flasks; electrodes; electrons; fimbriae; flagellum; genes; microbial fuel cells; oxygen; quantitative polymerase chain reaction; reverse transcriptase polymerase chain reaction
Abstract:
... The bacterium Kluyvera georgiana MCC 3673 transfers electrons directly to the electrode for bio-electricity generation in microbial fuel cell (MFC). This could be due to the formation of biofilm on the surface of electrode or with through the extracellular appendages, or both. The role of extracellular appendages pili and flagella in exo-electron transfer mechanism was investigated. The expression ...
DOI:
10.1007/s13205-020-2050-8
PubMed:
32051806
PubMed Central:
PMC6987287

37. Synthesis of an amorphous Geobacter-manganese oxide biohybrid as an efficient water oxidation catalyst

Author:
Shafeer Kalathil; Krishna P. Katuri; Pascal E. Saikaly
Source:
Green chemistry 2020 v.22 no.17 pp. 5610-5618
ISSN:
1463-9270
Subject:
Geobacter sulfurreducens; active sites; bacteria; catalysts; catalytic activity; cost effectiveness; electrochemistry; electrodes; green chemistry; hydrogen; iron; manganese; oxidation; oxygen production; phosphorus; photosystem II; renewable energy sources; surface area
Abstract:
... The development of a low cost and efficient oxygen evolution reaction (OER) catalyst has paramount importance to meet the future sustainable energy demand. Nature's photosynthetic machinery deploy manganese-based complex in the photosystem II to oxidize water. Inspired by nature, herein, we synthesized a high performing manganese-based OER catalyst using an electrochemically active and iron-rich b ...
DOI:
10.1039/c9gc04353e

38. The Crystal Structure of a Biological Insulated Transmembrane Molecular Wire

Author:
Marcus J. Edwards; Gaye F. White; Julea N. Butt; David J. Richardson; Thomas A. Clarke
Source:
Cell 2020 v.181 no.3 pp. 665-673.e10
ISSN:
0092-8674
Subject:
bacteria; crystal structure; electrodes; electrons; nanowires; phylogeny; surface area; transition elements
Abstract:
... A growing number of bacteria are recognized to conduct electrons across their cell envelope, and yet molecular details of the mechanisms supporting this process remain unknown. Here, we report the atomic structure of an outer membrane spanning protein complex, MtrAB, that is representative of a protein family known to transport electrons between the interior and exterior environments of phylogenet ...
DOI:
10.1016/j.cell.2020.03.032
PubMed:
32289252
PubMed Central:
PMC7198977

39. Visualization of Charge Transfer from Bacteria to a Self-Doped Conjugated Polymer Electrode Surface Using Conductive Atomic Force Microscopy

Author:
David Xi Cao; Hengjing Yan; Viktor V. Brus; Matthew S. Wong; Guillermo C. Bazan; Thuc-Quyen Nguyen
Source:
ACS applied materials & interfaces 2020 v.12 no.36 pp. 40778-40785
ISSN:
1944-8252
Subject:
Geobacter sulfurreducens; atomic force microscopy; bacteria; cell death; cytochromes; electrodes; electrolytes; electron transfer; fimbriae; polymers
Abstract:
... In this work, we aim to provide a better understanding of the reasons behind electron transfer inefficiencies between electrogenic bacteria and the electrode in microbial fuel cells. We do so using a self-doped conjugated polyelectrolyte (CPE) as the electrode surface, onto which Geobacter sulfurreducens is placed, then using conductive atomic force microscopy (C-AFM) to directly visualize and qua ...
DOI:
10.1021/acsami.0c10795

40. A mediator microbial biosensor for assaying general toxicity

Author:
A.S. Kharkova; V.A. Arlyapov; A.D. Turovskaya; V.I. Shvets; A.N. Reshetilov
Source:
Enzyme and microbial technology 2019 pp. -
ISSN:
0141-0229
Subject:
bacteria; biosensors; cadmium; copper; cosmetics; electrodes; electron transfer; ferrocenes; graphene; heavy metals; lead; median effective concentration; monitoring; p-nitrophenol; perfumes; phenol; screening; toxic substances; toxicity; zinc
Abstract:
... A mediator biosensor based on Paracoccus yeei bacteria for assaying the toxicity of perfumery and cosmetics samples was developed. An approach to selecting an electron-transport mediator based on the heterogeneous electron transfer constants for investigated mediators (ks) and the mediator–biomaterial interaction constants (kinteract) was proposed. Screening of nine compounds as potential mediator ...
DOI:
10.1016/j.enzmictec.2019.109435

41. A novel CuInS2/m-BiVO4 p-n heterojunction photocatalyst with enhanced visible-light photocatalytic activity

Author:
Sulawan Kaowphong; Wimonnat Choklap; Auttaphon Chachvalvutikul; Nopakarn Chandet
Source:
Colloids and surfaces 2019 v.579 pp. 123639
ISSN:
0927-7757
Subject:
Pseudomonas aeruginosa; absorption; antibacterial properties; bacteria; dielectric spectroscopy; electrodes; electrolytes; light; methyl orange; methylene blue; photocatalysis; photocatalysts; photolysis; rhodamines; salicylic acid
Abstract:
... Novel CuInS₂/m-BiVO₄ composites with different mass ratios (CuInS₂ to m-BiVO₄ = 1:3, 1:1, and 3:1) were synthesized and their potential visible-light photocatalytic applications for photodegradation of some organic dyes (methylene blue, rhodamine B, and methyl orange) and inactivation of bacteria (Pseudomonas aeruginosa) were investigated. CuInS₂/m-BiVO₄ with a mass ratio of 1:3 exhibited better p ...
DOI:
10.1016/j.colsurfa.2019.123639

42. A spectroelectrochemical investigation of the heme‐based sensor DevS from Mycobacterium tuberculosis: a redox versus oxygen sensor

Author:
Giamwemberg A. Barreto; Marta S. P. Carepo; Ana C. S. Gondim; Wellinson G. Guimarães; Luiz G. F. Lopes; Paul V. Bernhardt; Tércio F. Paulo; Eduardo H. S. Sousa; Izaura C. N. Diógenes
Source:
FEBS journal 2019 v.286 no.21 pp. 4278-4293
ISSN:
1742-464X
Subject:
Mycobacterium tuberculosis; anaerobic conditions; animal pathogens; autoxidation; bacteria; carbon monoxide; cyanides; dormancy; electrodes; gene expression regulation; hydrogen; imidazole; macrophages; nitric oxide; oxygen; tuberculosis; virulent strains
Abstract:
... Tuberculosis is one of the oldest known infectious diseases, responsible for millions of deaths annually around the world. The ability of Mycobacterium tuberculosis (Mtb) to enter into a dormant state has been considered integral to the success of this bacterium as a human pathogen. One of the key systems involved in regulating the entrance into dormancy is the differentially expressed in virulent ...
DOI:
10.1111/febs.14974

43. A supersensitive MSPQC bacterium sensor based on 16S rRNA and “DNA-RNA switch”

Author:
Ye Feng; Xiaoqing Zhang; Lingling Su; Yilin Zhang; Fengjiao He
Source:
Biosensors & bioelectronics 2019 v.138 pp. 111302
ISSN:
0956-5663
Subject:
Escherichia coli; Listeria innocua; Pseudomonas aeruginosa; Salmonella Enteritidis; Staphylococcus aureus; bacteria; biomarkers; biosensors; detection limit; electrodes; monitoring; public health; public safety; quartz; ribosomal RNA
Abstract:
... The early detection of bacterium plays a significant role in addressing serious public health issues. In this paper, a supersensitive multichannel series piezoelectric quartz crystal (MSPQC) sensor of bacterium based on 16S rRNA and “DNA-RNA switch” was constructed. The fragment in specific region of 16S rRNA was used as the biomarker of bacterium to ensure high specificity and to achieve the accu ...
DOI:
10.1016/j.bios.2019.05.007

44. An efficient tRNA cleaver without additional co-reactants at physiological condition

Author:
Fangfang Jian; E. Liu; Zhuangyu Li
Source:
Biochemical and biophysical research communications 2019 v.510 no.1 pp. 8-12
ISSN:
0006-291X
Subject:
X-radiation; bacteria; capillary electrophoresis; copper; decontamination; electrodes; gold; nucleases; pH; phosphates; spectral analysis; transfer RNA; ultraviolet-visible spectroscopy; viruses
Abstract:
... A square-planar Cu(II) complex, [Cu(Me-Im)(gly-gly)]∙H2O 1 (Me-Im = 1-methyl-imidazole, gly-gly = glycylglycinato), has been prepared and structurally characterized by single crystal X-ray. The complex 1 was tested for its ability to the transfer RNA by UV–vis spectroscopy, cyclic voltammetry (CV), capillary electrophoresis (CE). Comparative spectroscopic analysis shows a maximum fluorescence-quen ...
DOI:
10.1016/j.bbrc.2018.12.041

45. An impedance biosensor for simultaneous detection of low concentration of Salmonella serogroups in poultry and fresh produce samples

Author:
Ibrahem Jasim; Zhenyu Shen; Zahar Mlaji; Nuh S. Yuksek; Amjed Abdullah; Jiayu Liu; Shib Ghosch Dastider; Majed El-Dweik; Shuping Zhang; Mahmoud Almasri
Source:
Biosensors & bioelectronics 2019 v.126 pp. 292-300
ISSN:
0956-5663
Subject:
Salmonella; antibodies; antigens; bacteria; biosensors; detection limit; dielectrophoresis; electrodes; false positive results; fresh produce; pathogens; poultry; serotypes
Abstract:
... This paper reports the design, fabrication and testing of a microfluidic based impedance biosensor for rapid and simultaneous detection of three Salmonella serogroups. The microfluidic device consists of three microchannels, each one includes a region for focusing the Salmonella cells into the centerline of the microchannel and direct them toward the sensing region to obtain highly concentrated sa ...
DOI:
10.1016/j.bios.2018.10.065

46. Bacterial Extracellular Electron Transfer Occurs in Mammalian Gut

Author:
Wei Wang; Yahui Du; Shuai Yang; Xiaochen Du; Min Li; Bingqian Lin; Jie Zhou; Liyuan Lin; Yanling Song; Juan Li; Xiaolei Zuo; Chaoyong Yang
Source:
Analytical chemistry 2019 v.91 no.19 pp. 12138-12141
ISSN:
1520-6882
Subject:
Firmicutes; anaerobic conditions; bacteria; catalytic activity; cecum; electrodes; electron transfer; genes; guinea pigs; human health; intestinal microorganisms; mice; physiology; rats
Abstract:
... As a well-studied biochemical reduction process in environmental microbiology, extracellular electron transfer (EET) was recently discovered in bacteria closely related to human health, and orthologues of a flavin-based EET gene were found in the genomes of many species across Firmicutes, a major phylum in mammalian gut microbiota. However, EET has not yet been confirmed to occur in mammalian gut, ...
DOI:
10.1021/acs.analchem.9b03176

47. Bacterial Respiratory Chain Diversity Reveals a Cytochrome c Oxidase Reducing O₂ at Low Overpotentials

Author:
Xie Wang; Romain Clément; Magali Roger; Marielle Bauzan; Ievgen Mazurenko; Anne de Poulpiquet; Marianne Ilbert; Elisabeth Lojou
Source:
Journal of the American Chemical Society 2019 v.141 no.28 pp. 11093-11102
ISSN:
1520-5126
Subject:
Acidithiobacillus ferrooxidans; bacteria; biocatalysts; carbon; carbon nanofibers; cytochrome c; cytochrome-c oxidase; electrochemistry; electrodes; electron transfer; electron transport chain; hydrophobicity; oxygen; pH
Abstract:
... Cytochrome c oxidases (CcOs) are the terminal enzymes in energy-converting chains of microorganisms, where they reduce oxygen into water. Their affinity for O₂ makes them attractive biocatalysts for technological devices in which O₂ concentration is limited, but the high overpotentials they display on electrodes severely limit their applicative use. Here, the CcO of the acidophilic bacterium Acidi ...
DOI:
10.1021/jacs.9b03268

48. Cooperation Mode of Outer Surface and Inner Space of Nanochannel: Separation-Detection System Based on Integrated Nanochannel Electrode for Rapid and Facile Detection of Salmonella

Author:
Wenyue Zhu; Yin Chen; Yawen He; Weihuan Fang; Yibin Ying; Yanbin Li; Yingchun Fu
Source:
Analytical chemistry 2019 v.92 no.2 pp. 1818-1825
ISSN:
1520-6882
Subject:
Salmonella Typhimurium; artificial intelligence; bacteria; biosensors; detection limit; electrochemistry; electrodes; food safety; human health; magnetism; nanoparticles
Abstract:
... Nanochannels hold great prospects in intelligent systems; however, current research focuses on the inner space of the nanochannel while the outer surface is rarely explored. Here, we report on a cooperation mode of the outer surface and inner space of the nanochannel using an integrated nanochannel-electrode (INCE) and its application as a separation–detection system for rapid and facile detection ...
DOI:
10.1021/acs.analchem.9b03644

49. Detailed Structural Analyses of Nanofibrillated Bacterial Cellulose and Its Application as Binder Material for a Display Device

Author:
Kenji Tajima; Koutaro Tahara; Junya Ohba; Ryo Kusumoto; Ryota Kose; Hiroyuki Kono; Tokuo Matsushima; Koji Fushimi; Takuya Isono; Takuya Yamamoto; Toshifumi Satoh
Source:
Biomacromolecules 2019 v.21 no.2 pp. 581-588
ISSN:
1526-4602
Subject:
adsorption; aerobic conditions; bacteria; carboxymethylcellulose; color; electric field; electrodes; quaternary ammonium compounds; transmission electron microscopy; zeta potential
Abstract:
... Nanofibrillated bacterial cellulose (NFBC) is produced by culturing a cellulose-producing bacterium under agitated aerobic conditions in a carboxymethylcellulose (CMC)-supplemented medium. Detailed structural analyses revealed that NFBC fiber widths varied with the degree of substitution of the CMC used, and zeta potential values decreased with the increment of CMC concentration in the medium. Tra ...
DOI:
10.1021/acs.biomac.9b01328

50. Development of an advanced electrochemical biosensing platform for E. coli using hybrid metal-organic framework/polyaniline composite

Author:
Arushi Gupta; Sanjeev K. Bhardwaj; Amit L. Sharma; Ki-Hyun Kim; Akash Deep
Source:
Environmental research 2019 v.171 pp. 395-402
ISSN:
0013-9351
Subject:
Escherichia coli; Fourier transform infrared spectroscopy; X-ray diffraction; antibodies; bacteria; biosensors; composite materials; coordination compounds; dielectric spectroscopy; electrochemistry; electrodes; electron microscopy; indium tin oxide; surface area; ultraviolet-visible spectroscopy
Abstract:
... Because of numerous merits (e.g., the possibility of their synthesis in 1-D, 2-D, and 3-D forms, large surface-to-volume ratio, and flexible framework functionality), metal-organic frameworks (MOFs) are envisaged as excellent media for the development of biosensors for diverse analytes present in environmental media. The present research work, for the first time, reports the development of a Cu-MO ...
DOI:
10.1016/j.envres.2019.01.049

51. Dielectrophoretic separation of microalgae cells in ballast water in a microfluidic chip

Author:
Yanjuan Wang; Junsheng Wang; Xudong Wu; Zong Jiang; Wei Wang
Source:
Electrophoresis 2019 v.40 no.6 pp. 969-978
ISSN:
0173-0835
Subject:
Closterium; bacteria; ballast water; dielectrophoresis; electric field; electrodes; electrophoresis; microalgae; microparticles; microplastics; organ-on-a-chip
Abstract:
... The composition of the ship's ballast water is complex and contains a large number of microalgae cells, bacteria, microplastics, and other microparticles. To increase the accuracy and efficiency of detection of the microalgae cells in ballast water, a new microfluidic chip for continuous separation of microalgae cells based on alternating current dielectrophoresis was proposed. In this microfluidi ...
DOI:
10.1002/elps.201800302

52. EPS bound flavins driven mediated electron transfer in thermophilic Geobacillus sp

Author:
Dummi Mahadevan Gurumurthy; Ram Naresh Bharagava; Ashok Kumar; Bhaskar Singh; Muhammad Ashfaq; Ganesh Dattatraya Saratale; Sikandar I. Mulla
Source:
Microbiological research 2019 pp. -
ISSN:
0944-5013
Subject:
Geobacillus; bacteria; biofilm; cell walls; electrochemistry; electrodes; electron transfer; electrons; flavins; high performance liquid chromatography; matrix-assisted laser desorption-ionization mass spectrometry; minerals; moieties; polysaccharides; synthetic products
Abstract:
... Through extracellular electron transfer (EET), bacteria are capable of transforming different insoluble materials of geochemical interest into energy-rich molecules for their growth. For this process, bacteria have been depending directly or indirectly on molecules synthesized within the cells or by various synthetics as mediators. Herein, we studied the in situ change in electrochemistry and supp ...
DOI:
10.1016/j.micres.2019.126324

53. Effects of a novel auxiliary bio-electrochemical reactor on methane production from highly concentrated food waste in an anaerobic digestion reactor

Author:
Jun-Gyu Park; Beom Lee; Hye-Jeong Kwon; Hye-Rin Park; Hang-Bae Jun
Source:
Chemosphere 2019 v.220 pp. 403-411
ISSN:
0045-6535
Subject:
stainless steel; volatile fatty acids; methane production; microbial communities; electrodes; pH; oxidation; alkalinity; anaerobic digestion; commercialization; methanogens; food waste; bacteria; chemical oxygen demand
Abstract:
... In this study, the effects of indirect voltage supply to an anaerobic digestion (AD) reactor on methane production and the removal of chemical oxygen demand (COD) were studied at different organic loading rates (OLRs) of food waste by the circulation from an auxiliary bio-electrochemical reactor (ABER) with stainless steel (STS304) electrodes. The effects of the indirect voltage on microbial commu ...
DOI:
10.1016/j.chemosphere.2018.12.169

54. Effects of the presence of nanoscale zero-valent iron on the degradation of polychlorinated biphenyls and total organic carbon by sediment microbial fuel cell

Author:
Mingsong Wu; Xun Xu; Kexiang Lu; Xueqi Li
Source:
Science of the total environment 2019 v.656 pp. 39-44
ISSN:
0048-9697
Subject:
Desulfofustis; Geobacter; Pseudomonas; bacteria; electricity; electrodes; high-throughput nucleotide sequencing; iron; microbial communities; microbial fuel cells; polychlorinated biphenyls; redox potential; sediments; total organic carbon
Abstract:
... The degradation of polychlorinated biphenyls (PCBs) and total organic carbon (TOC) by sediment microbial fuel cell (SMFC) with/without nanoscale zero-valent iron (NZVI) addition was investigated. It was found that the combined application led to the highest removal efficiencies of PCBs (37.55 ± 1.11%) and TOC (49.72 ± 1.54%) in all circumstances and produced a higher power density (108.89 mW/m2) a ...
DOI:
10.1016/j.scitotenv.2018.11.326

55. Electric current induced bacterial inactivation in seawater: effects of various operating conditions

Author:
G. M. Ayoub; R. Zayyat; N. Naji
Source:
International journal of environmental science and technology 2019 v.16 no.8 pp. 4749-4760
ISSN:
1735-1472
Subject:
bacteria; byproducts; cell walls; chlorine; disinfection; electric current; electrodes; electrolysis; pH; scanning electron microscopes; seawater; temperature
Abstract:
... Conventional water disinfection processes suffer from several disadvantages including safety and handling issues and may result in the formation of undesirable and often harmful by-products. Novel disinfection methods, such as the application of low electric current, may present more practical, viable, and sustainable processes. The present study investigates the effects of applying a low-intensit ...
DOI:
10.1007/s13762-018-2109-9

56. Electrically conductive membranes for anti-biofouling in membrane distillation with two novel operation modes: Capacitor mode and resistor mode

Author:
Longjie Jiang; Lin Chen; Liang Zhu
Source:
Water research 2019 v.161 pp. 297-307
ISSN:
0043-1354
Subject:
bacteria; biofouling; biomarkers; biomass production; carbon nanotubes; distillation; electric field; electrical equipment; electrodes; electrostatic interactions; heat; microbial communities; polytetrafluoroethylene; reactive oxygen species; resistors; temperature; water treatment
Abstract:
... This study evaluated the anti-biofouling efficacy of capacitor mode and resistor mode in membrane distillation (MD). Polytetrafluoroethylene (PTFE) membrane coated with carbon nanotube (CNT) was adopted as the electrically conductive membrane. The biofouling formation on the pre-treatment membrane was systematically analyzed, and the results showed that both operation modes had obvious inhabitatio ...
DOI:
10.1016/j.watres.2019.06.015

57. Electroactive biofilm-based constructed wetland (EABB-CW): A mesocosm-scale test of an innovative setup for wastewater treatment

Author:
Carlos A. Ramírez-Vargas; Carlos A. Arias; Pedro Carvalho; Liang Zhang; Abraham Esteve-Núñez; Hans Brix
Source:
Science of the total environment 2019 v.659 pp. 796-806
ISSN:
0048-9697
Subject:
ammonium nitrogen; bacteria; biochemical oxygen demand; biodegradation; biofilters; biomass; chemical oxygen demand; constructed wetlands; electrochemistry; electrodes; metabolism; methane production; nitrogen; nutrients; organic matter; pollutants; pollution control; sand; subsurface flow; uncertainty; wastewater; wastewater treatment
Abstract:
... Constructed wetlands (CWs) performance enhancement can be done with intensification strategies. A recent strategy still in study is the coupling with Microbial Electrochemical Technologies (MET). An alternative system using electro-conductive biofilters instead of electrodes and circuits used in MET, resulted in the development of a Microbial Electrochemical-based CW (METland). This system relies ...
DOI:
10.1016/j.scitotenv.2018.12.432

58. Electrochemical biosensing of 16s rRNA gene sequence of Enterococcus faecalis

Author:
R. Nazari-Vanani; N. Sattarahmady; H. Yadegari; M. Khatami; H. Heli
Source:
Biosensors & bioelectronics 2019 pp. 111541
ISSN:
0956-5663
Subject:
DNA probes; Enterococcus faecalis; bacteria; biosensors; detection limit; electrochemistry; electrodes; genome; gold; humans; nucleotide sequences; pathogens; ribosomal DNA; ribosomal RNA
Abstract:
... Some of microorganisms are potential pathogens that can be infectious agents under some circumstances, and development of new detection methods of the pathogens is of high interest. In the present study, an Enterococcus faecalis (E. faecalis) DNA biosensor (ef-biosensor) was fabricated to quantify the bacterium genome. A specific E. faecalis DNA probe was selected from 16S rDNA sequence of E. faec ...
DOI:
10.1016/j.bios.2019.111541

59. Electrochemical inhibition bacterial sensor array for detection of water pollutants: artificial neural network (ANN) approach

Author:
Hisham Abu-Ali; Alexei Nabok; Thomas J. Smith
Source:
Analytical and bioanalytical chemistry 2019 v.411 no.29 pp. 7659-7668
ISSN:
1618-2642
Subject:
Escherichia coli; Methylococcus capsulatus; Shewanella oneidensis; atrazine; bacteria; cadmium chloride; cost effectiveness; dielectric spectroscopy; electrochemistry; electrodes; ethanol; gold; heavy metals; hexane; immobilized cells; lysine; mercuric chloride; neural networks; octane; pentane; petrochemicals; pollutants; screening; sensors (equipment); simazine; toluene
Abstract:
... This work reports on further development of an inhibition electrochemical sensor array based on immobilized bacteria for the preliminary detection of a wide range of organic and inorganic pollutants, such as heavy metal salts (HgCl₂, PbCl₂, CdCl₂), pesticides (atrazine, simazine, DDVP), and petrochemicals (hexane, octane, pentane, toluene, pyrene, and ethanol) in water. A series of DC and AC elect ...
DOI:
10.1007/s00216-019-01853-8
PubMed:
31161321
PubMed Central:
PMC6881469

60. Electromagnetic stratagem to control predator population in algal open pond cultivation

Author:
G. Venkata Subhash; Manjuladevi Rangappa; Sagarkumar Raninga; Venkatesh Prasad; Santanu Dasgupta; G. Raja Krishna Kumar
Source:
Algal research 2019 v.37 pp. 133-137
ISSN:
2211-9264
Subject:
Protozoa; algae; bacteria; biomass production; electric potential difference; electrodes; pH; ponds; predators; salinity; temperature
Abstract:
... Large scale cultivation of algae is becoming a major challenge due to the impact of biotic (grazers and predators) and abiotic (salinity, light, temperature and pH) stress factors on growth and biomass productivity. Historically, to control grazers and predators, various physical, chemical and biological methods have been used which have had detrimental effects on algae growth and environment. Con ...
DOI:
10.1016/j.algal.2018.11.014

61. Electrons selective uptake of a metal-reducing bacterium Shewanella oneidensis MR-1 from ferrocyanide

Author:
Zhiyong Zheng; Yong Xiao; Ranran Wu; Hans E. Mølager Christensen; Feng Zhao; Jingdong Zhang
Source:
Biosensors & bioelectronics 2019 pp. -
ISSN:
0956-5663
Subject:
Escherichia coli K12; Shewanella oneidensis; Streptococcus mutans; active sites; bacteria; bioelectrochemistry; biosensors; catalytic activity; cytochrome c; electrodes; electron transfer; electrons; energy; iron; models; nanoparticles; oxidation; palladium; ruthenium
Abstract:
... The extracellular electron transfer of Shewanella oneidensis MR-1 (MR-1) has been extensively studied due to the importance of the biosensors and energy applications of bioelectrochemical systems. However, the oxidation of metal compounds by MR-1, which represents the inward extracellular electron transfer from extracellular electron donors into the microbe, is barely understood. In this study, MR ...
DOI:
10.1016/j.bios.2019.111571

62. Elimination of bacterial contaminations by treatment of water with boron-doped diamond electrodes

Author:
Bastian Schorr; Hanadi Ghanem; Stefan Rosiwal; Walter Geißdörfer; Andreas Burkovski
Source:
World journal of microbiology & biotechnology 2019 v.35 no.3 pp. 48
ISSN:
0959-3993
Subject:
Bacillus subtilis; Escherichia coli; Pseudomonas aeruginosa; Pseudomonas fluorescens; bacteria; cross infection; disinfection; electric potential difference; electrochemistry; electrodes; freshwater; microbial contamination; oxidation; pathogens; reactive oxygen species; sewage; spores; water pollution
Abstract:
... Boron-doped diamond electrodes can be used to generate reactive oxygen species directly at the electrode’s surface. This property was used in this study for in-situ electrochemical oxidation to eliminate different bacteria, i.e. Escherichia coli, Pseudomonas fluorescens and Pseudomonas aeruginosa, as well as Bacillus subtilis spores from water samples. Application of low voltages in the rage from ...
DOI:
10.1007/s11274-019-2624-y

63. Enhanced degradation of triphenyl phosphate (TPHP) in bioelectrochemical systems: Kinetics, pathway and degradation mechanisms

Author:
Rui Hou; Xiaoshan Luo; Chuangchuang Liu; Lihua Zhou; Junlin Wen; Yong Yuan
Source:
Environmental pollution 2019 v.254 pp. 113040
ISSN:
0269-7491
Subject:
Azospirillum; Geobacter; Pseudomonas; Vibrio fischeri; acclimation; acetates; aquatic environment; bacteria; bacterial communities; bioelectrochemistry; byproducts; electrodes; metabolism; organophosphorus compounds; phosphates; sodium acetate; toxicity
Abstract:
... Triphenyl phosphate (TPHP) is one of the major organophosphate esters (OPEs) with increasing consumption. Considering its largely distribution and high toxicity in aquatic environment, it is important to explore an efficient treatment for TPHP. This study aimed to investigate the accelerated degradation of TPHP in a three-electrode single chamber bioelectrochemical system (BES). Significant increa ...
DOI:
10.1016/j.envpol.2019.113040

64. Entrapment of uropathogenic E. coli cells into ultra-thin sol-gel matrices on gold thin films: A low cost alternative for impedimetric bacteria sensing

Author:
Hamed Jafari; Mandana Amiri; Esmat Abdi; Saeid Latifi Navid; Julie Bouckaert; Roxana Jijie; Rabah Boukherroub; Sabine Szunerits
Source:
Biosensors & bioelectronics 2019 v.124-125 pp. 161-166
ISSN:
0956-5663
Subject:
bacteria; bacterial infections; biosensors; coatings; detection limit; electrodes; gold; morbidity; mortality; silica; uropathogenic Escherichia coli
Abstract:
... Bacterial infections are causing worldwide morbidity and mortality. One way to limit infectious outbreaks and optimize clinical management of infections is through the development of fast and sensitive sensing of bacteria. Most sensing approaches are currently based on immunological detection principles. We report here on an impedimetric sensor to selectively and sensitive detect uropathogenic E. ...
DOI:
10.1016/j.bios.2018.10.029

65. Epitope imprinting of Mycobacterium leprae bacteria via molecularly imprinted nanoparticles using multiple monomers approach

Author:
Archana Kushwaha; Juhi Srivastava; Ambareesh Kumar Singh; Richa Anand; Richa Raghuwanshi; Tulika Rai; Meenakshi Singh
Source:
Biosensors & bioelectronics 2019 v.145 pp. 111698
ISSN:
0956-5663
Subject:
Mycobacterium leprae; albumins; amino acids; bacteria; biosensors; blood plasma; blood proteins; blood sampling; detection limit; diagnostic techniques; electrochemistry; electrodes; endemic diseases; epitopes; globulins; gold; leprosy; molecular imprinting; nanogold; nanoparticles; patients; peptides; polymers; potassium; quartz; quartz crystal microbalance; screening
Abstract:
... Mycobacterium leprae causes endemic disease leprosy which becomes chronic if not treated timely. To expedite this ‘timely diagnosis’, and that also at an early stage, here an attempt is made to fabricate an epitope-imprinted sensor. A molecularly imprinted polymer nanoparticles modified electrochemical quartz crystal microbalance sensor was developed for sensing of Mycobacterium leprae bacteria th ...
DOI:
10.1016/j.bios.2019.111698

66. Extracellular Polymeric Substances from Geobacter sulfurreducens Biofilms in Microbial Fuel Cells

Author:
Markus Stöckl; Natascha Caroline Teubner; Dirk Holtmann; Klaus-Michael Mangold; Wolfgang Sand
Source:
ACS applied materials & interfaces 2019 v.11 no.9 pp. 8961-8968
ISSN:
1944-8252
Subject:
Geobacter sulfurreducens; bacteria; bioelectrochemistry; biofilm; electrodes; excretion; fractionation; harvesting; microbial fuel cells; polymers; proteins; silver; silver chloride
Abstract:
... Bioelectrochemical systems (BESs) are hybrid systems using electroactive bacteria and solid electrodes, which serve as electron donor or acceptor for microorganisms. When forming a biofilm on the electrode, bacteria secrete extracellular polymeric substances (EPSs). However, EPS excretion of electroactive biofilms in BES has been rarely studied so far. Consequently, the aim of this study is to dev ...
DOI:
10.1021/acsami.8b14340

67. Fast fabrication of reusable polyethersulfone microbial biosensors through biocompatible phase separation

Author:
N. Vigués; F. Pujol-Vila; J. Macanás; M. Muñoz; X. Muñoz-Berbel; J. Mas
Source:
Talanta 2019 pp. 120192
ISSN:
0039-9140
Subject:
alginates; bacteria; biocompatibility; biosensors; electrochemistry; electrodes; frozen storage; gels; glucose; median effective concentration; models; polymerization; polymers; separation; toxic substances; toxicity; viability
Abstract:
... In biosensors fabrication, entrapment in polymeric matrices allows efficient immobilization of the biorecognition elements without compromising their structure and activity. When considering living cells, the biocompatibility of both the matrix and the polymerization procedure are additional critical factors. Bio-polymeric gels (e.g. alginate) are biocompatible and polymerize under mild conditions ...
DOI:
10.1016/j.talanta.2019.120192

68. Fe₃O₄/granular activated carbon as an efficient three-dimensional electrode to enhance the microbial electrosynthesis of acetate from CO₂

Author:
Hao Zhu; Zhiwei Dong; Qiong Huang; Tian-shun Song; Jingjing Xie
Source:
RSC advances 2019 v.9 no.59 pp. 34095-34101
ISSN:
2046-2069
Subject:
acetates; activated carbon; bacteria; biofilm; carbon dioxide; electrochemistry; electrodes; electron transfer; electrosynthesis; iron oxides; microbial activity; microbial communities; renewable energy sources; value-added products
Abstract:
... Microbial electrosynthesis (MES) allows the transformation of CO₂ into value-added products by coupling with renewable energy. The enhancement in the microbial activity and electron transfer rate via a new electrode modification method is essential for developing MES. Here, three groups of granular activated carbon decorated by Fe₃O₄ (Fe₃O₄/GAC) with mass fractions of 23%, 38% and 50% were prepare ...
DOI:
10.1039/c9ra06255f

69. High-performance supercapacitor energy storage using a carbon material derived from lignin by bacterial activation before carbonization

Author:
Kejing Zhang; Mingren Liu; Tingzheng Zhang; Xiaoye Min; Zhongren Wang; Liyuan Chai; Yan Shi
Source:
Journal of materials chemistry A 2019 v.7 no.47 pp. 26838-26848
ISSN:
2050-7496
Subject:
bacteria; bacterial culture; capacitance; carbon; carbonization; electrochemical capacitors; electrodes; electrolytes; energy; energy density; ionic liquids; lignin; micropores; pollution; surface area
Abstract:
... The conversion of low-cost renewable lignin could enable the economic fabrication of carbon materials for energy storage devices. However, the traditional activation methods for the production of a lignin-derived porous carbon with a large specific surface area are complex and expensive, and some activators can cause pollution. In this paper, we propose a novel green bacterial activation method fo ...
DOI:
10.1039/c9ta04369a

70. Hospital wastewaters treatment: Fenton reaction vs. BDDE vs. ferrate(VI)

Author:
Tomáš Mackuľak; Roman Grabic; Viera Špalková; Noemi Belišová; Andrea Škulcová; Ondřej Slavík; Pavel Horký; Miroslav Gál; Jan Filip; Ján Híveš; Marian Vojs; Andrea Vojs Staňová; Alžbeta Medveďová; Marián Marton; Lucia Birošová
Source:
Environmental science and pollution research international 2019 v.26 no.31 pp. 31812-31821
ISSN:
0944-1344
Subject:
antibiotic resistance; antibiotics; bacteria; cotinine; electrodes; hospitals; illicit drugs; metabolites; oxidation; pollutants; sanitation; sulfamethoxazole; tandem mass spectrometry; wastewater; Slovakia
Abstract:
... Various types of micropollutants, e.g., pharmaceuticals and their metabolites and resistant strains of pathogenic microorganisms, are usually found in hospital wastewaters. The aim of this paper was to study the presence of 74 frequently used pharmaceuticals, legal and illegal drugs, and antibiotic-resistant bacteria in 5 hospital wastewaters in Slovakia and Czechia and to compare the efficiency o ...
DOI:
10.1007/s11356-019-06290-9

71. Improving lithium storage of size-controllable nanostructured anatase, directed by an artificial protein genetically displayed on the surface of Escherichia coli

Author:
Chao Wang; Hang Ping
Source:
Journal of materials science 2019 v.54 no.2 pp. 1539-1548
ISSN:
0022-2461
Subject:
Escherichia coli; bacteria; carbon; carbonization; coatings; electrical conductivity; electrodes; electrons; genetic engineering; ions; lithium; nanoparticles; particle size; proteins; temperature; titanium dioxide
Abstract:
... Biomineralization-associated proteins are responsible for the structure-forming process of biominerals. Aiming to regulate the synthesis of nanostructured TiO₂ anatase, an artificial protein 5R5 derived from silaffins was displayed on Escherichia coli surface through genetic manipulation. The genetically modified bacterial cells serve as the framework for the formation of rod-shaped TiO₂, assemble ...
DOI:
10.1007/s10853-018-2897-9

72. Influence of plasma characteristics on the efficacy of Cold Atmospheric Plasma (CAP) for inactivation of Listeria monocytogenes and Salmonella Typhimurium biofilms

Author:
Marlies Govaert; Cindy Smet; Laurens Vergauwen; Branimir Ećimović; James L. Walsh; Maria Baka; Jan Van Impe
Source:
Innovative food science & emerging technologies 2019 v.52 pp. 376-386
ISSN:
1466-8564
Subject:
Listeria monocytogenes; Salmonella Typhimurium; bacteria; biofilm; cleaning; disinfection; electric potential difference; electrodes; food contamination; foods; oxygen
Abstract:
... The biofilm mode of growth protects bacterial cells from applied disinfection methods for abiotic (food) contact surfaces. Therefore, new inactivation technologies such as Cold Atmospheric Plasma (CAP) should be considered. However, the influence of different plasma characteristics on the CAP efficacy for biofilm inactivation requires further study. In this research, the influence of (i) the appli ...
DOI:
10.1016/j.ifset.2019.01.013

73. Inkjet-Printed Carbon Nanotube Electrodes for Measuring Pyocyanin and Uric Acid in a Wound Fluid Simulant and Culture Media

Author:
Romana Jarošová; Sandra E. Mcclure; Margaret Gajda; Milica Jović; Hubert H. Girault; Andreas Lesch; Michael Maiden; Christopher Waters; Greg M. Swain
Source:
Analytical chemistry 2019 v.91 no.14 pp. 8835-8844
ISSN:
1520-6882
Subject:
Pseudomonas aeruginosa; bacteria; biomarkers; carbon nanotubes; cell free system; detection limit; electrochemistry; electrodes; monitoring; pyocyanin; tissue repair; uric acid
Abstract:
... Polyacrylamide-coated, carbon nanotube (PA/CNT) electrodes were prepared by an inkjet printing process and used to measure pyocyanin and uric acid in a wound fluid simulant at 37 °C. These two molecules are potential indicators of infection, and therefore their detection could prove useful for monitoring wound healing. Pyocyanin is a marker for the common wound bacterium Pseudomonas aeruginosa. Ou ...
DOI:
10.1021/acs.analchem.8b05591

74. Isolation and characterization of novel bacterial strains for integrated solar-bioelectrokinetic of soil contaminated with heavy petroleum hydrocarbons

Author:
Ikrema A. Hassan; Eltayeb E. Mohamedelhassan; Ernest K. Yanful; Brian Weselowski; Ze-Chun Yuan
Source:
Chemosphere 2019 v.237 pp. -
ISSN:
0045-6535
Subject:
Acinetobacter calcoaceticus; Sinorhizobium; Sphingobacterium multivorum; ambient temperature; bacteria; carboxylic ester hydrolases; diesel fuel; electric potential difference; electrodes; genes; hydrocarbons; models; petroleum; polluted soils; soil pH; solar collectors; solar energy; sustainable technology; water content; winter
Abstract:
... This study investigated the isolation and characterization of three novel bacterial strains; Acinetobacter calcoaceticus, Sphingobacterium multivorum, and Sinorhizobium, isolated form agriculture land. From three hundred strains of bacteria, the three isolates were identified for their superior diesel degradation ability by a series of bench-scale tests. The isolates were further investigated in b ...
DOI:
10.1016/j.chemosphere.2019.124514

75. Mechanism characterization of bacterial inactivation of atmospheric air plasma gas and activated water using bioluminescence technology

Author:
Shyam Suwal; Claudia P. Coronel-Aguilera; Jameson Auer; Bruce Applegate; Allen L. Garner; Jen-Yi Huang
Source:
Innovative food science & emerging technologies 2019 v.53 pp. 18-25
ISSN:
1466-8564
Subject:
Escherichia coli K12; NAD (coenzyme); NADP (coenzyme); air; antibacterial properties; bacteria; bacterial culture; bioluminescence; biosensors; cell viability; disinfection; electrodes; fluorescent dyes; food industry; foods; geometry; mechanism of action; models; monitoring; oxidation
Abstract:
... We assessed the efficacy of bacterial inactivation using a dielectric barrier discharge in three different plasma setups: plasma gas (PG), and direct and indirect plasma activated water (PAW), where deionized water was placed either between or away from the electrodes, respectively. We used bioluminescent Escherichia coli K12 lux as a model bacteria in a biosensor format to study the inactivation ...
DOI:
10.1016/j.ifset.2018.01.007

76. Microfluidic based impedance biosensor for pathogens detection in food products

Author:
Amjed Abdullah; Shibajyoti Ghosh Dastider; Ibrahem Jasim; Zhenyu Shen; Nuh Yuksek; Shuping Zhang; Majed Dweik; Mahmoud Almasri
Source:
Electrophoresis 2019 v.40 no.4 pp. 508-520
ISSN:
0173-0835
Subject:
Escherichia coli O157; Salmonella Typhimurium; antibodies; bacteria; biosensors; chicken meat; dielectrophoresis; electrodes; electrophoresis; glass; pathogens; raw chicken meat
Abstract:
... A MEMS‐based impedance biosensor was designed, fabricated, and tested to effectively detect the presence of bacterial cells including E. coli O157:H7 and Salmonella typhimurium in raw chicken products using detection region made of multiple interdigitated electrode arrays. A positive dielectrophoresis based focusing electrode was used in order to focus and concentrate the bacterial cells at the ce ...
DOI:
10.1002/elps.201800405

77. Mitigation of soil contaminated with diesel fuel using bioelectrokinetics

Author:
Ikrema A. Hassan; Eltayeb E. Mohamedelhassan; Ernest K. Yanful; Ze-Chun Yuan
Source:
Journal of environmental science and health 2019 v.54 no.5 pp. 416-426
ISSN:
1532-4117
Subject:
Acinetobacter calcoaceticus; Sinorhizobium; Sphingobacterium multivorum; ambient temperature; bacteria; bioremediation; diesel fuel; electric potential difference; electrodes; polluted soils; sand; soil pH; solar collectors; solar energy; sustainable technology; water content; winter
Abstract:
... This study investigated the effectiveness of bioelectrokinetics in rehabilitating a silty clayey sand contaminated with diesel fuel using three novel bacterial strains; Acinetobacter calcoaceticus, Sphingobacterium multivorum, and Sinorhizobium, isolated form agriculture land. Three electrokinetic bioremediation cells were used to conduct the tests and a novel electrode configuration technique was ...
DOI:
10.1080/10934529.2018.1558903

78. On-Chip Concentration and Patterning of Biological Cells Using Interplay of Electrical and Thermal Fields

Author:
Golak Kunti; Tarun Agarwal; Anandaroop Bhattacharya; Tapas Kumar Maiti; Suman Chakraborty
Source:
Analytical chemistry 2019 v.92 no.1 pp. 838-844
ISSN:
1520-6882
Subject:
Escherichia coli; antibiotic resistance; bacteria; diagnostic techniques; drugs; electric field; electrical properties; electrodes; heat; temperature; yeasts
Abstract:
... We demonstrate a method of concentrating and patterning of biological cells on a chip, exploiting the confluence of electric and thermal fields, without necessitating the use of any external heating or illuminating sources. The technique simply employs two parallel plate electrodes and an insulating layer over the bottom electrode, with a drilled insulating layer for inducing localized variations ...
DOI:
10.1021/acs.analchem.9b03364

79. Rapid determination of the electroporation threshold for bacteria inactivation using a lab-on-a-chip platform

Author:
Ting Wang; Hang Chen; Cecilia Yu; Xing Xie
Source:
Environment international 2019 v.132 pp. 105040
ISSN:
0160-4120
Subject:
Staphylococcus epidermidis; bacteria; disinfection; drinking water; electric field; electric potential difference; electrodes; electroporation; fluorescence microscopy; glass; lab-on-a-chip technology; models; platinum; pulsed electric fields; staining
Abstract:
... Electroporation based locally enhanced electric field treatment (LEEFT) is an emerging bacteria inactivation technology for drinking water disinfection. Nevertheless, the lethal electroporation threshold (LET) for bacteria has not been studied, partly due to the tedious work required by traditional experimental methods. Here, a lab-on-a-chip device composed of platinum electrodes deposited on a gl ...
DOI:
10.1016/j.envint.2019.105040

80. Rationally designed tubular coaxial-electrode copper ionization cells (CECICs) harnessing non-uniform electric field for efficient water disinfection

Author:
Jianfeng Zhou; Ting Wang; Xing Xie
Source:
Environment international 2019 v.128 pp. 30-36
ISSN:
0160-4120
Subject:
Escherichia coli; antimicrobial properties; bacteria; cell membranes; copper; dielectrophoresis; disinfection; electric field; electrodes; electrophoresis; ionization; ions; permeability; risk
Abstract:
... Though well known for its anti-microbial property, copper is usually not considered for drinking water disinfection because of its health risk to human bodies under efficient biocidal concentration. Herein, we have rationally designed and constructed a tubular coaxial-electrode copper ionization cell (CECIC) that enables superior disinfection performance (~6-log removal of E. coli) with a very low ...
DOI:
10.1016/j.envint.2019.03.072

81. Shifting interactions among bacteria, fungi and archaea enhance removal of antibiotics and antibiotic resistance genes in the soil bioelectrochemical remediation

Author:
Xiaodong Zhao; Xiaojing Li; Yue Li; Yang Sun; Xiaolin Zhang; Liping Weng; Tianzhi Ren; Yongtao Li
Source:
Biotechnology for biofuels 2019 v.12 no.1 pp. 160
ISSN:
1754-6834
Subject:
Archaea; antibiotic resistance genes; bacteria; biochemical pathways; bioelectricity; bioelectrochemistry; electricity generation; electrodes; fungi; human health; microbial fuel cells; nitrogen; remediation; risk; soil; soil pollution; sulfadiazine; tetracycline
Abstract:
... BACKGROUND: Antibiotics and antibiotic resistance genes (ARGs) are two pollutants in soil, especially ARGs as one of the top three threats to human health. The performance of soil microbial fuel cells (MFCs) fuelled with antibiotics was investigated. RESULTS: In this study, soil MFCs spiked with tetracycline exhibited optimal bioelectricity generation, which was 25% and 733% higher than those of M ...
DOI:
10.1186/s13068-019-1500-1
PubMed:
31249623
PubMed Central:
PMC6589883

82. Simultaneous isolation and label‐free identification of bacteria using contactless dielectrophoresis and Raman spectroscopy

Author:
Cynthia Hanson; Jacob T. Barney; Morgan M. Bishop; Elizabeth Vargis
Source:
Electrophoresis 2019 v.40 no.10 pp. 1446-1456
ISSN:
0173-0835
Subject:
Raman spectroscopy; agar; bacteria; dielectrophoresis; electrodes; electrophoresis; fouling; heat; polystyrenes
Abstract:
... The traditional bacterial identification method of growing colonies on agar plates can take several days to weeks to complete depending on the growth rate of the bacteria. Successfully decreasing this analysis time requires cell isolation followed by identification. One way to decrease analysis time is by combining dielectrophoresis (DEP), a common technique used for cell sorting and isolation, an ...
DOI:
10.1002/elps.201800389

83. Smart Chip for Visual Detection of Bacteria Using the Electrochromic Properties of Polyaniline

Author:
Saba Ranjbar; Mohammad Amin Farahmand Nejad; Claudio Parolo; Saeed Shahrokhian; Arben Merkoçi
Source:
Analytical chemistry 2019 v.91 no.23 pp. 14960-14966
ISSN:
1520-6882
Subject:
Escherichia coli; antibodies; bacteria; biosensors; color; computer software; detection limit; electrochemistry; electrodes; indium tin oxide; oxidation; polyaniline; virulent strains
Abstract:
... Finding fast and reliable ways to detect pathogenic bacteria is crucial for addressing serious public health issues in clinical, environmental, and food settings. Here, we present a novel assay based on the conversion of an electrochemical signal into a more convenient optical readout for the visual detection of Escherichia coli. Electropolymerizing polyaniline (PANI) on an indium tin oxide screen ...
DOI:
10.1021/acs.analchem.9b03407

84. Solubilization of organic matter by electrochemical treatment of sludge: Influence of operating conditions

Author:
M. Pérez-Rodríguez; A. Cano; U. Durán; J.A. Barrios
Source:
Journal of environmental management 2019 v.236 pp. 317-322
ISSN:
0301-4797
Subject:
activated sludge; anaerobic digestion; bacteria; biogas; carbon dioxide; chemical oxygen demand; electrochemistry; electrodes; energy; hydrolysis; land application; mass transfer; methane; organic matter; solubilization; wastewater treatment
Abstract:
... Sludge generated after wastewater treatment represents an important challenge due to the large amounts produced and the need to adequately treat it. Anaerobic digestion is the preferred treatment process to obtain renewable energy as well as a biosolid with the potential to be reused in land application. This process generates biogas (methane and carbon dioxide) that may be used for energy co-gene ...
DOI:
10.1016/j.jenvman.2019.01.105

85. Technical applications of plasma treatments: current state and perspectives

Author:
Juliana Šimončicová; Svetlana Kryštofová; Veronika Medvecká; Kamila Ďurišová; Barbora Kaliňáková
Source:
Applied microbiology and biotechnology 2019 v.103 no.13 pp. 5117-5129
ISSN:
0175-7598
Subject:
antibiotic resistance; atmospheric pressure; bacteria; biocompatible materials; biofilm; biotechnology; blood coagulation; cold; electrodes; food safety; fungi; medicine; neoplasms; spores; synergism; teeth; tissue repair; toxins; ultraviolet radiation; viruses
Abstract:
... Rapidly evolving cold atmospheric pressure plasma (CAPP)–based technology has been actively used not only in bioresearch but also in biotechnology, food safety and processing, agriculture, and medicine. High variability in plasma device configurations and electrode layouts has accelerated non-thermal plasma applications in treatment of various biomaterials and surfaces of all sizes. Mode of cold p ...
DOI:
10.1007/s00253-019-09877-x

86. Towards development of electrogenetics using electrochemically active bacteria

Author:
Atsumi Hirose; Atsushi Kouzuma; Kazuya Watanabe
Source:
Biotechnology advances 2019 pp. -
ISSN:
0734-9750
Subject:
Shewanella oneidensis; bacteria; biochemical pathways; electric power; electricity; electrochemistry; electrodes; electrosynthesis; genes; microbial fuel cells; organic wastes
Abstract:
... Owing to the ability for efficient electric interaction with electrodes, electrochemically active bacteria (EAB) attract considerable attention in biotechnology. These bacteria are involved not only in the generation of electricity from organic wastes in microbial fuel cells but also in the production of valued chemicals with the aid of electric energy in microbial electrosynthesis systems. It has ...
DOI:
10.1016/j.biotechadv.2019.02.007

87. Towards sustainable bioplastic production using the photoautotrophic bacterium Rhodopseudomonas palustris TIE-1

Author:
Tahina Onina Ranaivoarisoa; Rajesh Singh; Karthikeyan Rengasamy; Michael S. Guzman; Arpita Bose
Source:
Journal of industrial microbiology & biotechnology 2019 v.46 no.9-10 pp. 1401-1417
ISSN:
1367-5435
Subject:
Rhodopseudomonas palustris; ammonium chloride; autotrophs; bacteria; biodegradability; bioplastics; biosynthesis; carbon dioxide; electricity; electrodes; gene expression; gene expression regulation; genes; iron; nitrogen
Abstract:
... Bacterial synthesis of polyhydroxybutyrates (PHBs) is a potential approach for producing biodegradable plastics. This study assessed the ability of Rhodopseudomonas palustris TIE-1 to produce PHBs under various conditions. We focused on photoautotrophy using a poised electrode (photoelectroautotrophy) or ferrous iron (photoferroautotrophy) as electron donors. Growth conditions were tested with eit ...
DOI:
10.1007/s10295-019-02165-7
PubMed:
30927110
PubMed Central:
PMC6791910

88. Ultrasensitive Electrochemical Biosensor of Bacterial 16S rRNA Gene Based on polyA DNA Probes

Author:
Qian Wang; Yanli Wen; Yan Li; Wen Liang; Wen Li; Yuan Li; Jiahuan Wu; Huichen Zhu; Keke Zhao; Jun Zhang; Nengqin Jia; Wangping Deng; Gang Liu
Source:
Analytical chemistry 2019 v.91 no.14 pp. 9277-9283
ISSN:
1520-6882
Subject:
DNA; DNA probes; adenine; bacteria; biosensors; detection limit; electrochemistry; electrodes; genes; gold; messenger RNA; polymerase chain reaction; ribosomal RNA
Abstract:
... Traditional microbiology analysis is usually hindered by the long time-cost and lack of portability in many urgent situations. In this work, we developed a novel electrochemical DNA biosensor (E-biosensor) for sensitive analysis of the 16S rRNA gene of five bacteria, using a consecutive adenine (polyA) probe. The polyA probe consists of a polyA tail and a recognition part. The polyA tail can combi ...
DOI:
10.1021/acs.analchem.9b02175

89. Versatile Electrochemical Sensing Platform for Bacteria

Author:
Sabine Kuss; Rosa A. S. Couto; Rhiannon M. Evans; Hayley Lavender; Christoph C. Tang; Richard G. Compton
Source:
Analytical chemistry 2019 v.91 no.7 pp. 4317-4322
ISSN:
1520-6882
Subject:
Escherichia coli; Neisseria; antibodies; bacteria; bacterial infections; biosensors; cost effectiveness; cytochrome-c oxidase; electrochemistry; electrodes; mortality; pathogens; portable equipment; virulent strains
Abstract:
... Bacterial infections present one of the leading causes of mortality worldwide, resulting in an urgent need for sensitive, selective, cost-efficient, and easy-to-handle technologies to rapidly detect contaminations and infections with pathogens. The presented research reports a fully functional chemical-detection principle, addressing all of the above-mentioned requirements for a successful biosens ...
DOI:
10.1021/acs.analchem.9b00326

90. Vertical alignment of polyaniline nanofibers on electrode surface for high-performance microbial fuel cells

Author:
Dan-Dan Zhai; Zhen Fang; Hongwei Jin; Ming Hui; Christopher Joseph Kirubaharan; Yang-Yang Yu; Yang-Chun Yong
Source:
Bioresource technology 2019 v.288 pp. 121499
ISSN:
0960-8524
Subject:
bacteria; carbon; electrodes; electron transfer; energy; microbial fuel cells; nanofibers; polymerization; polymers; proteins; tartaric acid; wastewater
Abstract:
... Electrode modifications with conductive and nanostructured polyaniline (PANI) were recognized as efficient approach to improve interaction between electrode surface and electrogenic bacteria for boosting the performance of microbial fuel cell (MFC). However, it still showed undesirable performance because of the challenge to control the orientation (such as vertical alignment) of PANI nanostructur ...
DOI:
10.1016/j.biortech.2019.121499

91. Voltammetric study of conductive planar assemblies of Geobacter nanowire pilins unmasks their ability to bind and mineralize divalent cobalt

Author:
Krista M. Cosert; Gemma Reguera
Source:
Journal of industrial microbiology & biotechnology 2019 v.46 no.9-10 pp. 1239-1249
ISSN:
1367-5435
Subject:
Geobacter; bacteria; bioavailability; biocompatible materials; cobalt; electrodes; fimbriae; gold; liquids; nanoparticles; nanowires; oxidation; peptides; toxicity; traps
Abstract:
... Geobacter bacteria assemble a helical peptide of the Type IVa pilin subclass as conductive pili decorated with metal binding and reduction sites. We used recombinant techniques to synthesize thiolated pilin derivatives and self-assembled them on gold electrodes as a monolayer that concentrated the metal traps at the liquid interface. Cyclic and step potential voltammetry demonstrated the conductiv ...
DOI:
10.1007/s10295-019-02167-5

92. A Cu₃P nanowire enabling high-efficiency, reliable, and energy-efficient low-voltage electroporation-inactivation of pathogens in water

Author:
Zheng-Yang Huo; Jian-Feng Zhou; Yutong Wu; Yin-Hu Wu; Hai Liu; Nian Liu; Hong-Ying Hu; Xing Xie
Source:
Journal of materials chemistry 2018 v.6 no.39 pp. 18813-18820
ISSN:
2050-7496
Subject:
bacteria; byproducts; carcinogenicity; chlorination; copper; copper nanoparticles; disinfection; electric potential difference; electrodes; electroporation; energy efficiency; humans; morbidity; mortality; nanowires; ozonation; pathogens; purification methods; regrowth; ultraviolet radiation; water purification
Abstract:
... Pathogen infection has become the major reason for human morbidity and mortality in the world. However, common bacterial inactivation methods (e.g., chlorination, ultraviolet radiation, and ozonization) have significant drawbacks such as carcinogenic byproduct formation, energy intensiveness, and/or regrowth of pathogens. Nanowire-assisted low-voltage electroporation enables effective and energy-e ...
DOI:
10.1039/c8ta06304d

93. A statistical approach of zinc remediation using acidophilic bacterium via an integrated approach of bioleaching enhanced electrokinetic remediation (BEER) technology

Author:
Adikesavan Selvi; Rajasekar Aruliah
Source:
Chemosphere 2018 v.207 pp. 753-763
ISSN:
0045-6535
Subject:
Serratia marcescens; bacteria; bioleaching; cleaning; computer software; databases; electrodes; inoculum; pH; remediation; ribosomal RNA; sludge; soil; statistical analysis; tannery effluents; titanium; zinc
Abstract:
... The aim of the present study was to isolate an indigenous acidophilic bacterium from tannery effluent contaminated sludge (TECS) sample and evaluate its potentiality towards the removal of zinc using an integrated approach of bioleaching enhanced electrokinetic remediation (BEER) technology in zinc spiked soil at an initial concentration of 1000 mg/kg. The isolated acidophilic bacterium was charac ...
DOI:
10.1016/j.chemosphere.2018.05.144

94. Bioelectrochemical enhancement of organic matter mineralization and sulfate reduction during acidogenesis

Author:
Yue Li; Zhiqiang Zhao; Yafei Yang; Huimin Zhao; Yaobin Zhang
Source:
Journal of chemical technology and biotechnology 2018 v.93 no.3 pp. 675-682
ISSN:
0268-2575
Subject:
acetates; anaerobic digestion; bacteria; biofilm; chemical oxygen demand; electrodes; fluorescence in situ hybridization; metabolism; microbial electrolysis cells; mineralization; organic matter; sulfates; wastewater; wastewater treatment
Abstract:
... BACKGROUND: The microbial electrolysis cell (MEC) has been widely reported as an efficient strategy to enhance anaerobic digestion. However, the role of the MEC during acidogenesis for treatment of sulfate‐containing wastes remains unclear. In this study a pair of electrodes was placed into an acidogenic reactor to form MEC‐based acidogenesis to investigate its performance in sulfate‐containing wa ...
DOI:
10.1002/jctb.5414

95. Bucking the current trend in bioelectrochemical systems: a case for bioelectroanalytics

Author:
Thomas William Seviour; Jamie Hinks
Source:
Critical reviews in biotechnology 2018 v.38 no.4 pp. 634-646
ISSN:
1549-7801
Subject:
bacteria; bioelectrochemistry; climate change; cost effectiveness; electricity; electrodes; electron transfer; genetic techniques and protocols; metabolism; microbial activity; microbial fuel cells; wastewater
Abstract:
... Turning wastewater directly into electricity is alluring, widespread use of microbial fuel cells (MFCs) to achieve this at industrial scale appears increasingly unlikely despite intense research efforts lasting over a decade. Such endeavors have not been futile, however, and game-changing discoveries have resulted from these well-intentioned, scientifically rigorous but ultimately frustrated attem ...
DOI:
10.1080/07388551.2017.1380599

96. Carbon nanotube-based aptasensor for sensitive electrochemical detection of whole-cell Salmonella

Author:
Md Rakibul Hasan; Thiruchelvi Pulingam; Jimmy Nelson Appaturi; Anis Nadyra Zifruddin; Swe Jyan Teh; Teck Wei Lim; Fatimah Ibrahim; Bey Fen Leo; Kwai Lin Thong
Source:
Analytical biochemistry 2018 v.554 pp. 34-43
ISSN:
0003-2697
Subject:
oligonucleotides; Salmonella; carbon nanotubes; dielectric spectroscopy; electrodes; electrochemistry; carbon; aptasensors; scanning electron microscopy; single-stranded DNA; bacteria
Abstract:
... In this study, an amino-modified aptasensor using multi-walled carbon nanotubes (MWCNTs)-deposited ITO electrode was prepared and evaluated for the detection of pathogenic Salmonella bacteria. An amino-modified aptamer (ssDNA) which binds selectively to whole-cell Salmonella was immobilised on the COOH-rich MWCNTs to produce the ssDNA/MWCNT/ITO electrode. The morphology of the MWCNT before and aft ...
DOI:
10.1016/j.ab.2018.06.001

97. Construction of a quaternary ammonium salt platform with different alkyl groups for antibacterial and biosensor applications

Author:
Xue Lv; Chuang Liu; Shixin Song; Yun Qiao; Yuanjiao Hu; Pengfei Li; Zhaokun Li; Shulin Sun
Source:
RSC advances 2018 v.8 no.6 pp. 2941-2949
ISSN:
2046-2069
Subject:
ammonium salts; antibacterial properties; bacteria; biosensors; carbon; electrochemistry; electrodes; electron transfer; electrostatic interactions; hemoglobin; minimum inhibitory concentration; moieties; polymers; quaternary ammonium compounds
Abstract:
... An electrochemical platform was designed using biocompatible quaternary ammonium salts containing alkyl groups with different chain lengths as electrode materials for visible protein immobilization on a glassy carbon (GC) electrode. The electrode was constructed using a simple self-assembly method relying on the electrostatic interaction between negatively charged hemoglobin (Hb) and positively ch ...
DOI:
10.1039/c7ra11001d

98. Critical evaluation of mechanism responsible for biomass abatement during electrochemical coagulation (EC) process: A critical review

Author:
Kadarkarai Govindan; Arumugam Angelin; Murali Rangarajan
Source:
Journal of environmental management 2018 v.227 pp. 335-353
ISSN:
0301-4797
Subject:
algae; bacteria; biomass; cell wall components; cell walls; coagulation; disinfection; electric field; electrochemistry; electrodes; flocculation; microbial contamination; reactive oxygen species; viruses
Abstract:
... This is a first review paper that delineates fundamental disinfection mechanism undergoes during the simple electrochemical coagulation (EC) process. The elucidation of detailed mechanistic phenomenon of EC process involved would help to enhance the disinfection efficiency. In this context, the biomass (bacteria, virus and algae) abatement mechanism by EC is critically reviewed and rationalized ba ...
DOI:
10.1016/j.jenvman.2018.08.100

99. Detection of Enzymes, Viruses, and Bacteria Using Glucose Meters

Author:
Amrita Das; Xikai Cui; Vasanta Chivukula; Suri S. Iyer
Source:
Analytical chemistry 2018 v.90 no.19 pp. 11589-11598
ISSN:
1520-6882
Subject:
Escherichia coli; Orthomyxoviridae; Streptococcus pneumoniae; acetaminophen; alpha-mannosidase; bacteria; beta-galactosidase; blood; catechol; chemical species; detection limit; electrodes; glucose; glucose oxidase; pathogens; sheep; urine; viruses
Abstract:
... We have developed innovative assays that can detect enzymes rapidly. Paracetamol- or catechol-bearing compounds, when exposed to their respective enzymes, released paracetamol or catechol, which can be detected using a standard glucose meter. This approach was used to detect a number of diverse analytes that include enzymes such as β-galactosidase and α-mannosidase and pathogens such as influenza ...
DOI:
10.1021/acs.analchem.8b02960

100. Efficient bacterial disinfection based on an integrated nanoporous titanium dioxide and ruthenium oxide bifunctional approach

Author:
Bal-Ram Adhikari; Sapanbir S. Thind; Shuai Chen; Heidi Schraft; Aicheng Chen
Source:
Journal of hazardous materials 2018 v.356 pp. 73-81
ISSN:
0304-3894
Subject:
Escherichia coli; bacteria; cost effectiveness; disinfection; drinking water; electrochemistry; electrodes; models; nanoparticles; nanopores; photocatalysis; photocatalysts; remediation; ruthenium; titanium; titanium dioxide; ultraviolet radiation; wastewater treatment; water purification
Abstract:
... The increasing lack of drinking water around the globe is of great concern. Although UV irradiation, photocatalysis, and electrocatalysis for bacterial disinfection have been widely explored, the synergistic kinetics involved in these strategies have not been reported to date. Herein, we report on an efficient and cost-effective strategy for the remediation of a model bacterium (E. coli), through ...
DOI:
10.1016/j.jhazmat.2018.05.036