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1. Changes in the microbial community during the acclimation process of anaerobic digestion for treatment of synthetic lipid-rich wastewater

Author:
Nakasaki, Kiyohiko; Koyama, Mitsuhiko; Maekawa, Takuya; Fujita, Jo
Source:
Journal of biotechnology 2019 v.306 pp. 32-37
ISSN:
0168-1656
Subject:
Actinomycetales; Methanobacteriales; Methanosarcinales; Nitrospirales; Synergistales; acclimation; acetic acid; anaerobic digestion; bacteria; carbon; glucose; lactic acid; lipid content; lipids; methane production; microbial communities; ribosomal RNA; sequence analysis; soybean oil; wastewater
Abstract:
... Changes in the microbial community were investigated during the acclimation process of anaerobic digestion while treating synthetic lipid-rich wastewater, which comprised of glucose, acetic acid, lactic acid, and soybean oil. The oil content in the synthetic wastewater was increased successively from 0% to 25% and finally to 50% of the total carbon content, to clarify the effect of substrate type ...
DOI:
10.1016/j.jbiotec.2019.09.003

2. Production of glycoprotein bioflocculant from untreated rice straw by a CAZyme-rich bacterium, Pseudomonas sp. HP2

Author:
Qi, Zhenyu; Zhu, Yueyue; Guo, Haipeng; Chen, Yifan; Zhao, Yueji; Zhou, Yu; Wang, Xinyue; Yang, Yuxiao; Qin, Wensheng; Shao, Qianjun
Source:
Journal of biotechnology 2019 v.306 pp. 185-192
ISSN:
0168-1656
Subject:
Pseudomonas; bacteria; biomass; carbon; forest soils; genes; glycoproteins; proline; rhamnose; rice straw; xylanases
Abstract:
... It has been reported that certain biomass-degrading bacteria can produce bioflocculant through directly utilizing untreated biomass as carbon source. However, little is known about the synthesis mechanism of bioflocculant in these bacteria. In this study, a biomass-degrading bacterium Pseudomonas sp. HP2 showing excellent production ability of bioflocculant was isolated from the forest soil. The H ...
DOI:
10.1016/j.jbiotec.2019.10.011

3. Stoichiometric control on riparian wetland carbon and nutrient dynamics under different land uses

Author:
Yao, Lu; Rashti, Mehran Rezaei; Brough, Daniel M.; Burford, Michele A.; Liu, Wenzhi; Liu, Guihua; Chen, Chengrong
Source:
The Science of the total environment 2019 v.697
ISSN:
0048-9697
Subject:
Archaea; ammonia; ammonium nitrogen; bacteria; biogeochemistry; carbon; crop production; ecological function; filtration; forests; genes; highlands; land use change; microbial biomass; nitrate nitrogen; nitrogen; nutrient availability; nutrient retention; nutrients; riparian areas; riparian soils; sediments; stable isotopes; stoichiometry; sugarcane; upland soils; wetlands
Abstract:
... Riparian wetland provides important ecosystem function, such as water filtration and nutrient retention. When land use change in upland from native forest to sugarcane cultivation have important impacts on carbon (C) and nutrient availability in downstream wetland systems. Here, we examined concentrations and stoichiometry of C and nutrients in total, labile, biomass pools in upland soil, riparian ...
DOI:
10.1016/j.scitotenv.2019.134127

4. The emerging role of aldehyde:ferredoxin oxidoreductases in microbially-catalyzed alcohol production

Author:
Nissen, Laura Sofie; Basen, Mirko
Source:
Journal of biotechnology 2019 v.306 pp. 105-117
ISSN:
0168-1656
Subject:
Archaea; NADP (coenzyme); acetyl coenzyme A; alcohol dehydrogenase; aldehydes; anaerobes; bacteria; biocatalysts; biomass; biorefining; carbon dioxide; carbon monoxide; catalytic activity; emissions; ethanol; fossil fuels; hydrogen; industry; liquids; organic acids and salts; oxygen; redox potential; renewable energy sources; synthesis gas; thermodynamics
Abstract:
... The development of a bio-refinery industry based on liquid fuels is presumably key to successful replacement of fossil fuels and a reduction of carbon dioxide (CO2) emissions. Ethanol and longer-chain alcohols are supposed to play a key role since they are relatively easy to produce, using microorganisms as whole-cell biocatalysts. Alcohols may be produced from lignocellulose-derived biomass or fr ...
DOI:
10.1016/j.jbiotec.2019.09.005

5. The performance of gravity-driven membrane (GDM) filtration for roofing rainwater reuse: Implications of roofing rainwater energy and rainwater purification

Author:
Du, Xing; Xu, Jiongji; Mo, Zhuoyu; Luo, Yunlong; Su, Junhao; Nie, Jinxu; Wang, Zhihong; Liu, Lifan; Liang, Heng
Source:
The Science of the total environment 2019 v.697
ISSN:
0048-9697
Subject:
adenosine triphosphate; aluminum; ammonium nitrogen; bacteria; biofilm; calcium; chromium; confocal laser scanning microscopy; copper; energy; energy-dispersive X-ray analysis; filtration; image analysis; iron; manganese; microbial activity; microbial communities; organic carbon; polymers; public water supply; rain; scanning electron microscopy; spectroscopy; stormwater management; water harvesting
Abstract:
... Rainwater harvesting (RWH) coupled with gravity-driven membrane (GDM) filtration was used to simultaneously treat rainwater and recover energy. A pilot GDM could obtain a relatively stable level of permeate flux (~4.0 L/(m2·h)) under a set water head (ΔH = 0.4 m) over 140 days of operation. An increase water head (ΔH = 0.6 m) did not achieve a sharp increase in stabilized flux (~2.4 L/(m2·h)) over ...
DOI:
10.1016/j.scitotenv.2019.134187

6. Characterization and 16S metagenomic analysis of organophosphorus flame retardants degrading consortia

Author:
Wang, Junhuan; Khokhar, Ibatsam; Ren, Chao; Li, Xianjun; Wang, Jiayi; Fan, Shuanghu; Jia, Yang; Yan, Yanchun
Source:
Journal of hazardous materials 2019 v.380 pp. 120881
ISSN:
0304-3894
Subject:
Sphingomonas; bacteria; bioremediation; carbon; cell growth; flame retardants; metabolism; metagenomics; pH; phosphates; salinity; temperature; China
Abstract:
... Three bacterial consortia, named YC-SY1, YC-BJ1 and YC-GZ1, were enriched from different areas of China. Bacterial consortia YC-SY1, YC-BJ1 and YC-GZ1 could efficiently degrade triphenyl phosphate (TPhP) (100 mg/L) by approximately 79.4%, 99.8% and 99.6%, tricresyl phosphate (TCrP) by 90.6%, 91.9% and 96.3%, respectively, within 4 days. And they could retain high degrading efficiency under a broad ...
DOI:
10.1016/j.jhazmat.2019.120881

7. Comparative evaluation of a biotrickling filter and a tubular photobioreactor for the continuous abatement of toluene

Author:
Oliva, Giuseppina; Ángeles, Roxana; Rodríguez, Elisa; Turiel, Sara; Naddeo, Vincenzo; Zarra, Tiziano; Belgiorno, Vincenzo; Muñoz, Raúl; Lebrero, Raquel
Source:
Journal of hazardous materials 2019 v.380 pp. 120860
ISSN:
0304-3894
Subject:
acidification; bacteria; biodegradation; biofilters; carbon dioxide; dissolved oxygen; human health; microalgae; models; oxygen; photobioreactors; photosynthesis; secondary metabolites; synergism; toluene; volatile organic compounds
Abstract:
... The negative effects of volatile organic compounds (VOCs) on humans’ health and the environment have boosted the enforcement of regulations, resulting in the need of effective and environmentally friendly off-gas treatment technologies. In this work, the synergism between microalgae and bacteria was investigated as a sustainable platform to enhance the biological degradation of toluene, herein sel ...
DOI:
10.1016/j.jhazmat.2019.120860

8. Efficient nitrogen removal in separate coupled-system of anammox and sulfur autotrophic denitrification with a nitrification side-branch under substrate fluctuation

Author:
Wang, Tuo; Guo, Jianbo; Song, Yuanyuan; Lian, Jing; Li, Haibo; Lu, Caicai; Han, Yi; Hou, Yanan
Source:
The Science of the total environment 2019 v.696
ISSN:
0048-9697
Subject:
ammonium; anaerobic ammonium oxidation; bacteria; bacterial communities; biofilm; denitrification; nitrites; nitrogen; polymers; starvation; sulfur; total nitrogen; wastewater treatment
Abstract:
... In order to achieve efficient nitrogen removal, a separate coupled-system of anaerobic ammonia oxidation (anammox) and sulfur autotrophic denitrification (S0-SADN) was established. In this study, the operational feasibility and stability of the coupled-system under substrate fluctuations were investigated. Results showed that the coupled-system improved the total nitrogen removal efficiency (TNRE) ...
DOI:
10.1016/j.scitotenv.2019.133929

9. Impacts on antibiotic-resistant bacteria and their horizontal gene transfer by graphene-based TiO2&Ag composite photocatalysts under solar irradiation

Author:
Guo, Mei-Ting; Tian, Xiao-Bo
Source:
Journal of hazardous materials 2019 v.380 pp. 120877
ISSN:
0304-3894
Subject:
antibiotic resistance; antibiotic resistance genes; bacteria; chloramphenicol; graphene; graphene oxide; horizontal gene transfer; irradiation; lighting; nanocomposites; nanosilver; photocatalysis; photocatalysts; pollutants; pollution; risk assessment; silver; solar radiation; tetracycline; titanium dioxide
Abstract:
... In recent years, photocatalysis has been considered as a promising method, which provides measures to environmental pollution. Antibiotic resistant bacteria (ARB) and their antibiotic resistance genes (ARGs), as the emerging environmental pollutants, are released into the environment, resulting in antibiotic resistance spread. TiO2-based nanocomposites, as the most common photocatalytic material, ...
DOI:
10.1016/j.jhazmat.2019.120877

10. Increased power production and removal efficiency of polycyclic aromatic hydrocarbons by plant pumps in sediment microbial electrochemical systems: A preliminary study

Author:
Liu, Boyue; Zhai, Hongyan; Liang, Yinxiu; Ji, Min; Wang, Rumeng
Source:
Journal of hazardous materials 2019 v.380 pp. 120896
ISSN:
0304-3894
Subject:
Bacteroidetes; Chloroflexi; Proteobacteria; aerobes; anodes; bacteria; biodegradation; biofilm; bioremediation; electric potential difference; electrochemistry; enzyme activity; generators (equipment); mass flow; mass transfer; microbial activity; organic carbon; phenanthrenes; power generation; pumps; sediments
Abstract:
... The low mass transfer of sediment substrates has limited the efficiency and application of a sediment microbial electrochemical system (SMES) as a power generator and as a practical bioremediation technology. In this study, we designed a new plant-driven SMES (New-PSMES) with a separated sand-filled anode column in order to improve the mass transfer and thereby enhance the microorganism activity, ...
DOI:
10.1016/j.jhazmat.2019.120896

11. Isolation and characterization of a chlorate-reducing bacterium Ochrobactrum anthropi XM-1

Author:
Chen, Han-Wen; Xu, Meng; Ma, Xi-Wen; Tong, Zhong-Hua; Liu, Dong-Feng
Source:
Journal of hazardous materials 2019 v.380 pp. 120873
ISSN:
0304-3894
Subject:
Ochrobactrum anthropi; anaerobic conditions; arabinose; bacteria; enzyme activity; enzymes; fructose; gene expression; glucose; glycerol; nitrates; nucleotide sequences; oxygen; pH; perchlorates; remediation; ribosomal RNA; sodium citrate; sucrose; temperature
Abstract:
... A Gram-negative chlorate-reducing bacterial strain XM-1 was isolated. The 16S rRNA gene sequence identified the isolate as Ochrobactrum anthropi XM-1, which was the first strain of genus Ochrobactrum reported having the ability to reduce chlorate. The optimum growth temperature and pH for strain XM-1 to reduce chlorate was found to be 30 °C and 5.0–7.5, respectively, under anaerobic condition. Str ...
DOI:
10.1016/j.jhazmat.2019.120873

12. Performance of various cyanide degrading bacteria on the biodegradation of free cyanide in water

Author:
Razanamahandry, L.C.; Onwordi, C.T.; Saban, W.; Bashir, A.K.H.; Mekuto, L.; Malenga, E.; Manikandan, E.; Fosso-Kankeu, E.; Maaza, M.; Ntwampe, S.K.O
Source:
Journal of hazardous materials 2019 v.380 pp. 120900
ISSN:
0304-3894
Subject:
bacteria; biodegradation; cryopreservation; cyanides; mining; thiocyanates; wastewater
Abstract:
... This study reports on the biodegradation of free cyanide (FCN) by cyanide degrading bacteria (CDB) that were isolated from mining wastewater and thiocyanate containing wastewater. The performance of these isolates was compared to cryopreserved CDBs that were used in previous studies. The performance of the isolates to degrade FCN was studied in batch cultures. It was observed that the CDB from the ...
DOI:
10.1016/j.jhazmat.2019.120900

13. The plastisphere in marine ecosystem hosts potential specific microbial degraders including Alcanivorax borkumensis as a key player for the low-density polyethylene degradation

Author:
Delacuvellerie, Alice; Cyriaque, Valentine; Gobert, Sylvie; Benali, Samira; Wattiez, Ruddy
Source:
Journal of hazardous materials 2019 v.380 pp. 120899
ISSN:
0304-3894
Subject:
Alcanivorax borkumensis; Bacteroidetes; Marinobacter; bacteria; bacterial communities; biofilm; carbon; community structure; hosts; landfills; marine ecosystems; microbiome; petroleum; polyethylene; polyethylene terephthalates; polystyrenes; ribosomal RNA; sediments; Mediterranean Sea
Abstract:
... Most plastics are released to the environment in landfills and around 32% end up in the sea, inducing large ecological and health impacts. The plastics constitute a physical substrate and potential carbon source for microorganisms. The present study compares the structures of bacterial communities from floating plastics, sediment-associated plastics and sediments from the Mediterranean Sea. The 16 ...
DOI:
10.1016/j.jhazmat.2019.120899

14. Transport of a PAH-degrading bacterium in saturated limestone media under various physicochemical conditions: Common and unexpected retention and remobilization behaviors

Author:
Li, Xiaohui; Xu, Hongxia; Gao, Bin; Sun, Yuanyuan; Shi, Xiaoqing; Wu, Jichun
Source:
Journal of hazardous materials 2019 v.380 pp. 120858
ISSN:
0304-3894
Subject:
bacteria; calcium chloride; cation exchange; cations; hydrophobic bonding; limestone; pH; porous media; sodium chloride; surface roughness; temperature
Abstract:
... Laboratory saturated columns packed with granular limestone grains were used to explore the retention and remobilization of functional bacteria FA1 under various physicochemical conditions. The unique surface properties of limestone and FA1 caused some unexpected phenomena. Solution IS, cation type, temperature and surface biological property all affected FA1 retention in the columns. The IS effec ...
DOI:
10.1016/j.jhazmat.2019.120858

15. Current status and future prospects of sewer biofilms: Their structure, influencing factors, and substance transformations

Author:
Li, Wenkai; Zheng, Tianlong; Ma, Yingqun; Liu, Junxin
Source:
The Science of the total environment 2019 v.695 pp. 133815
ISSN:
0048-9697
Subject:
Archaea; antibiotic resistance genes; bacteria; biofilm; biomarkers; decision making; explosions; nanoparticles; nitrogen; organic matter; pollutants; public health; risk; sewage; sewer systems; shear stress; sulfur; urbanization
Abstract:
... With rapid urbanization, sewer systems are extensively being constructed for the collection and transportation of sewage to minimize the severe environmental and health issues, especially relating to the spread diseases. The existence of abundant biofilms on the inner walls of sewers could lead to potential risks such as sewer explosions, poisonous gas leaks, and pipe corrosions with the transform ...
DOI:
10.1016/j.scitotenv.2019.133815

16. Distribution characteristics of antibiotic resistant bacteria and genes in fresh and composted manures of livestock farms

Author:
Wang, Lanjun; Wang, Jun; Wang, Jinhua; Zhu, Lusheng; Yang, Lili; Yang, Rui
Source:
The Science of the total environment 2019 v.695 pp. 133781
ISSN:
0048-9697
Subject:
agricultural land; antibiotic resistance; antibiotic resistance genes; bacteria; chickens; composted manure; composting; cow manure; cows; doxycycline; enrofloxacin; farms; industry; interspersed repetitive sequences; pig manure; quantitative polymerase chain reaction; rural areas; sulfamethazine; swine; tetracycline; tylosin; China
Abstract:
... Livestock manure is a major reservoir of antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs). This study investigated the distribution characteristics of ARB, ARGs in fresh and composted manures of traditional breading industry in rural areas in China. Samples collected were naturally piled without professional composting, and will be applied to farmland. The real-time quant ...
DOI:
10.1016/j.scitotenv.2019.133781

17. Effects of decabromodiphenyl ether on activity, abundance, and community composition of phosphorus mineralizing bacteria in eutrophic lake sediments

Author:
Chen, Juan; Gao, Han; Wang, Peifang; Wang, Chao; Sun, Shenghao; Wang, Xun
Source:
The Science of the total environment 2019 v.695 pp. 133785
ISSN:
0048-9697
Subject:
Actinobacteria; Bradyrhizobium; alkaline phosphatase; bacteria; biogeochemical cycles; community structure; eutrophication; genes; lakes; mineralization; orthophosphates; persistent organic pollutants; phosphorus; polybrominated diphenyl ethers; sediments; China
Abstract:
... Polybrominated diphenyl ethers (PBDEs) are typical persistent organic pollutants (POPs) in the environment. However, little is known about their effects on phosphorus mineralizing bacteria (PMB) in eutrophic lake sediments, despite the critical role of PMB in phosphorus (P) biogeochemical cycling. In this study, we carried out a 60-day microcosm experiment to understand the effects of 2 and 20 mg  ...
DOI:
10.1016/j.scitotenv.2019.133785

18. Enhancing direct interspecies electron transfer in syntrophic-methanogenic associations with (semi)conductive iron oxides: Effects and mechanisms

Author:
Xu, Hui; Chang, Jiali; Wang, Han; Liu, Yancheng; Zhang, Xiaoyuan; Liang, Peng; Huang, Xia
Source:
The Science of the total environment 2019 v.695 pp. 133876
ISSN:
0048-9697
Subject:
anaerobic digestion; bacteria; biological treatment; cytochromes; electron transfer; electrons; fimbriae; formates; hydrogen; iron oxides; metabolism; methane; methane production; methanogens; physicochemical properties; thermodynamics; wastewater
Abstract:
... Anaerobic digestion is an effective biological treatment process that produces methane by degrading organic compounds in waste/wastewater. It is a complicated microbial process by metabolic interactions among different types of microorganisms. In this process, efficient interspecies electron transfer between secondary fermenting bacteria and methanogens is the critical process for fast and effecti ...
DOI:
10.1016/j.scitotenv.2019.133876

19. Mechanisms of pharmaceutical and personal care product removal in algae-based wastewater treatment systems

Author:
Larsen, Christian; Yu, Zhu Hao; Flick, Robert; Passeport, Elodie
Source:
The Science of the total environment 2019 v.695 pp. 133772
ISSN:
0048-9697
Subject:
Chlorella vulgaris; Scenedesmus obliquus; algae; bacteria; bioreactors; biotransformation; environmental health; gemfibrozil; humans; ibuprofen; personal care products; photochemistry; reaction mechanisms; triclosan; wastewater treatment
Abstract:
... The widespread distribution of pharmaceuticals and personal care products (PPCPs), particularly in the built environment, has led to increased concern about their effects on both human and ecosystem health. In this research, we investigated the role of algae species Scenedesmus obliquus and Chlorella vulgaris in governing PPCP transfer and transformation mechanisms in algae-containing environments ...
DOI:
10.1016/j.scitotenv.2019.133772

20. Methane-based denitrification kinetics and syntrophy in a membrane biofilm reactor at low methane pressure

Author:
Lee, Jangho; Alrashed, Wael; Engel, Katja; Yoo, Keunje; Neufeld, Josh D.; Lee, Hyung-Sool
Source:
The Science of the total environment 2019 v.695 pp. 133818
ISSN:
0048-9697
Subject:
Escherichia; Methylococcus; Methylocystis; anaerobic conditions; bacteria; biofilm; denitrification; denitrifying microorganisms; dissolved oxygen; genes; genetic traits; metagenomics; methane; methanotrophs; mixing; mixing ratio; nitrate reduction; nitrates; nitrites; nitrogen; oxidation; ribosomal RNA; sequence analysis; sewage treatment; wastewater
Abstract:
... A methane-based membrane biofilm reactor (MBfR) was assessed for a tertiary nitrogen removal process in domestic wastewater treatment. To mitigate effluent dissolved methane concentrations, the MBfR was operated with a 20% methane mixing ratio and a low pressure of 0.003 atm. The nitrate concentration was reduced from 20 to 4 mg/L with a low methane concentration of 3.3 mg/L in the effluent at 4 h ...
DOI:
10.1016/j.scitotenv.2019.133818

21. Organic amendment strengthens interkingdom associations in the soil and rhizosphere of barley (Hordeum vulgare)

Author:
Suleiman, Afnan K.A.; Harkes, Paula; van den Elsen, Sven; Holterman, Martijn; Korthals, Gerard W.; Helder, Johannes; Kuramae, Eiko E.
Source:
The Science of the total environment 2019 v.695 pp. 133885
ISSN:
0048-9697
Subject:
Animalia; Hordeum vulgare; Protozoa; adverse effects; bacteria; barley; ecological footprint; ecological function; ecosystems; environmental factors; fauna; fertilizer application; fungi; management systems; mineral fertilizers; organic fertilizers; predation; predators; rhizosphere; soil; soil food webs; soil microorganisms
Abstract:
... Anthropogenic modification of soil systems has diverse impacts on food web interactions and ecosystem functioning. To understand the positive, neutral or adverse effects of agricultural practices on the associations of community members of soil microbes and microfaunal biomes, we characterized the effects of different fertilization types (organic, inorganic and a combination of organic and inorgan ...
DOI:
10.1016/j.scitotenv.2019.133885

22. Screening and evaluation of heavy metals facilitating antibiotic resistance gene transfer in a sludge bacterial community

Author:
Lin, Hai; Jiang, Lintian; Li, Bing; Dong, Yingbo; He, Yinhai; Qiu, Yong
Source:
The Science of the total environment 2019 v.695 pp. 133862
ISSN:
0048-9697
Subject:
ABC transporters; Aeromonas; Enterobacter; Escherichia coli; Pseudomonas; activated sludge; amino acid metabolism; antibiotic resistance genes; arsenic; bacteria; bacterial communities; biochemical pathways; flow cytometry; gene transfer; heavy metals; lead; mercury; phylogeny; plasmids; prediction; risk assessment; screening
Abstract:
... Recent growing evidence suggests that heavy metals can stimulate the transfer of antibiotic resistance genes (ARGs) between bacteria. However, most previous studies focused on pure strains, the effect of heavy metals on ARG transfer in bacterial communities, especially in activated sludge, has not been clearly explored. In this study, a high-throughput method, combining computerized incubator (Bio ...
DOI:
10.1016/j.scitotenv.2019.133862

23. Using flow cytometry for bacterioplankton community analysis as a complementary tool to Water Framework Directive to signal putatively impacted sites

Author:
Santos, Martha; Peixoto, Sara; Pereira, Joana L.; Luís, Ana T.; Henriques, Isabel; Gonçalves, Fernando J.M.; Pereira, Mário J.; Oliveira, Helena; Vidal, Tânia
Source:
The Science of the total environment 2019 v.695 pp. 133754
ISSN:
0048-9697
Subject:
DNA; European Union; bacteria; bacterial communities; bacterioplankton; biological assessment; case studies; denaturing gradient gel electrophoresis; flow cytometry; freshwater ecosystems; macroinvertebrates; metals; organic matter; periphyton; pesticides; prioritization; rivers; screening; surface water; taxonomy
Abstract:
... Metal contamination, as well as pesticides, organic matter and nutrient input are main factors leading to freshwater ecosystems degradation. The Water Framework Directive (WFD) was implemented within the European Union with the ultimate goal of promoting a good ecological status in all European waterbodies. However, the broad implementation of the bioassessment behind WFD is costly and time-consum ...
DOI:
10.1016/j.scitotenv.2019.133754

24. Variability in cyanobacteria sensitivity to antibiotics and implications for environmental risk assessment

Author:
Le Page, Gareth; Gunnarsson, Lina; Trznadel, Maciej; Wedgwood, Kyle C.A.; Baudrot, Virgile; Snape, Jason; Tyler, Charles R.
Source:
The Science of the total environment 2019 v.695 pp. 133804
ISSN:
0048-9697
Subject:
Cyanobacteria; ampicillin; antibiotic resistance; azithromycin; bacteria; bacterial communities; bacterial growth; cefazolin; cefotaxime; community structure; ecological function; environmental assessment; environmental impact; mechanism of action; probability analysis; risk; risk assessment; sulfadiazine; toxicity
Abstract:
... Once released into the environment antibiotics can kill or inhibit the growth of bacteria, and in turn potentially have effects on bacterial community structure and ecosystem function. Environmental risk assessment (ERA) seeks to establish protection limits to minimise chemical impacts on the environment, but recent evidence suggests that the current regulatory approaches for ERA for antibiotics m ...
DOI:
10.1016/j.scitotenv.2019.133804

25. Aerobic cometabolism of 1,4-dioxane by isobutane-utilizing microorganisms including Rhodococcus rhodochrous strain 21198 in aquifer microcosms: Experimental and modeling study

Author:
Rolston, Hannah M.; Hyman, Michael R.; Semprini, Lewis
Source:
The Science of the total environment 2019 v.694 pp. 133688
ISSN:
0048-9697
Subject:
Rhodococcus rhodochrous; aquifers; bacteria; bioaugmentation; biomass; butanes; dioxane; long term experiments; models; nutrients; Colorado
Abstract:
... Aerobic cometabolism of the emerging contaminant 1,4-dioxane (1,4-D) by isobutane-utilizing microorganisms was assessed in pure culture and aquifer microcosm studies. The bacterium Rhodococcus rhodochrous strain ATCC 21198 transformed low, environmentally-relevant concentrations of 1,4-D when grown on isobutane. Microcosms were constructed with aquifer solids from Fort Carson, Colorado, a site con ...
DOI:
10.1016/j.scitotenv.2019.133688

26. Analysis of nucleotide pools in bacteria using HPLC-MS in HILIC mode

Author:
Zborníková, Eva; Knejzlík, Zdeněk; Hauryliuk, Vasili; Krásný, Libor; Rejman, Dominik
Source:
Talanta 2019 v.205 pp. 120161
ISSN:
0039-9140
Subject:
bacteria; bioactive properties; chemical species; cold; detectors; filtration; high performance liquid chromatography; hydrophilic interaction chromatography; mass spectrometry; nucleosides; nucleotides; zwitterions
Abstract:
... Nucleotides, nucleosides and their derivatives are present in all cells at varying concentrations that change with the nutritional, and energetic status of the cell. Precise measurement of the concentrations of these molecules is instrumental for understanding their regulatory effects. Such measurement is challenging due to the inherent instability of these molecules and, despite many decades of r ...
DOI:
10.1016/j.talanta.2019.120161

27. A novel hybrid concept for implementation in drinking water treatment targets micropollutant removal by combining membrane filtration with biodegradation

Author:
Hylling, Ole; Nikbakht Fini, Mahdi; Ellegaard-Jensen, Lea; Muff, Jens; Madsen, Henrik Tækker; Aamand, Jens; Hansen, Lars Hestbjerg; Fini, Mahdi Nikbakht
Source:
The Science of the total environment 2019 v.694 pp. 133710
ISSN:
0048-9697
Subject:
Aminobacter; aeration; bacteria; bioaugmentation; biodegradation; biofilters; drinking water; drinking water treatment; groundwater; metals; microfiltration; pesticide residues; pesticides; pollutants; predation; quantitative polymerase chain reaction; radiolabeling; reverse osmosis; salts; sand; sand filters
Abstract:
... Groundwater extracted for drinking water production is commonly treated by aeration and sand filtration. However, this simple treatment is typically unable to remove pesticide residues. As a solution, bioaugmentation of sand filter units (i.e., the addition of specific degrader strains) has been proposed as an alternative “green” technology for targeted pesticide removal. However, the introduced d ...
DOI:
10.1016/j.scitotenv.2019.133710

28. A novel screening tool for the health risk in recreational waters near estuary: The Carrying Capacity indicator

Author:
Di Dato, Mariaines; Galešić, Morena; Šimundić, Petra; Andričević, Roko
Source:
The Science of the total environment 2019 v.694 pp. 133584
ISSN:
0048-9697
Subject:
Enterococcus; acceptable risk; bacteria; carrying capacity; coasts; economic development; ecosystems; estuaries; human health; microbiological risk assessment; resorts; screening; sewage systems; stakeholders; stochastic processes; surface water; swimming; wastewater
Abstract:
... The present study aims to provide a conceptual framework to help practitioners to improve the quality of recreational waters near estuary, which may be affected by untreated wastewater from Combined Sewer Overflows (CSOs). When CSOs are activated, the concentration of bacteria (e.g., Enterococci and E. coli) in estuary increases, thereby resulting in a potential health threat to swimmers. Here, th ...
DOI:
10.1016/j.scitotenv.2019.133584

29. Attenuation of Fe(III)-reducing bacteria during table fluctuation of groundwater containing Fe2+

Author:
Chen, Rong; Liu, Hui; Zhang, Peng; Zhao, Lei; Ding, Kang; Yuan, Songhu
Source:
The Science of the total environment 2019 v.694 pp. 133660
ISSN:
0048-9697
Subject:
Shewanella oneidensis; aerobic conditions; air; bacteria; biogeochemical cycles; death; dissolved oxygen; groundwater; hydroxyl radicals; iron; oxidants; oxidation; oxygen; sand; superoxide anion; water table
Abstract:
... Groundwater table fluctuation during natural and anthropogenic processes can facilitate the interaction between oxygen (O2) from the unsaturated zone and ferrous iron (Fe2+) from the saturated zone. In light of previous findings that Fe(III)-reducing bacteria can be killed by the reactive oxidants produced from Fe2+ oxidation under static oxic conditions, we hypothesize that Fe(III)-reducing bacte ...
DOI:
10.1016/j.scitotenv.2019.133660

30. Bimetallic-based food sensors for meat spoilage: Effects of the accepting metallic unit in Fe(II)CNMA (MA = Pt(II) or Au(I)) on device selectivity and sensitivity

Author:
Chow, Cheuk-Fai
Source:
Food chemistry 2019 v.300 pp. 125190
ISSN:
0308-8146
Subject:
bacteria; detection limit; dimethyl sulfide; dimethyl sulfoxide; freshness; gas chromatography-mass spectrometry; gold; iron; meat; microbial growth; monitoring; platinum; product safety; spoilage; thermodynamics
Abstract:
... Technologies for monitoring meat spoilage are important to ensuring consumer safety. As dimethyl sulfide (DMS) is a reliable marker for meat freshness, sensitive and selective DMS sensors are of great interest. Herein, two trinuclear cyano-bridged bimetallic donor–acceptor ensembles, FeII(bpy)2(CN)2–[PtII(DMSO)Cl2]2 (1) and FeII(bpy)2(CN)2–[AuICl]2, were synthesized, and corresponding solid-suppor ...
DOI:
10.1016/j.foodchem.2019.125190

31. Effects of current intensities on the performances and microbial communities in a combined bio-electrochemical and sulfur autotrophic denitrification (CBSAD) system

Author:
Wang, Hongyu; Lyu, Wanlin; Hu, Xiaoling; Chen, Ling; He, Qiulai; Zhang, Wei; Song, Jianyang; Wu, Jing
Source:
The Science of the total environment 2019 v.694 pp. 133775
ISSN:
0048-9697
Subject:
Clostridia; Thauera; bacteria; denitrification; hydrogen; microbial communities; nitrate reduction; nitrates; sulfur
Abstract:
... The lab-scale system combined bioelectrochemical and sulfur autotrophic denitrification (CBSAD) was established to evaluate the effects of currents (50–300 mA) on both the performances and microbial communities. Results showed that the nitrate removal rate increased significantly when the current increased from 50 to 200 mA, while it slightly decreased with higher currents. Mass balance results re ...
DOI:
10.1016/j.scitotenv.2019.133775

32. Evaluating the enantiospecific differences of non-steroidal anti-inflammatory drugs (NSAIDs) using an ecotoxicity bioassay test battery

Author:
Neale, Peta A.; Branch, Amos; Khan, Stuart J.; Leusch, Frederic D.L.
Source:
The Science of the total environment 2019 v.694 pp. 133659
ISSN:
0048-9697
Subject:
Chlorophyta; algae; aquatic environment; bacteria; bioassays; ecotoxicology; enantiomers; environmental assessment; enzymes; fish; ibuprofen; ketoprofen; median effective concentration; nontarget organisms; photosystem II; risk; risk assessment; toxicity; wastewater treatment
Abstract:
... Wastewater treatment plants are a major pathway for pharmaceuticals to the aquatic environment. Many pharmaceuticals, including non-steroidal anti-inflammatory drugs (NSAIDs), are chiral chemicals and the biological activity of their enantiomers can differ. Few studies have assessed the effects of different NSAID enantiomers on non-target organisms. However, this information is important for envir ...
DOI:
10.1016/j.scitotenv.2019.133659

33. Fate of oxygen species from O2 activation at dimetal cofactors in an oxidase enzyme revealed by 57Fe nuclear resonance X-ray scattering and quantum chemistry

Author:
Mebs, Stefan; Srinivas, Vivek; Kositzki, Ramona; Griese, Julia J.; Högbom, Martin; Haumann, Michael
Source:
Biochimica et biophysica acta 2019 v.1860 no.12 pp. 148060
ISSN:
0005-2728
Subject:
Bacillus kaustophilus; X-ray scattering; bacteria; catalysts; catalytic activity; chemical structure; enzymes; ions; iron; isotope labeling; ligands; manganese; oxygen; proteins; protonation; protons; quantum mechanics; solvents; spectroscopy; stable isotopes
Abstract:
... Oxygen (O2) activation is a central challenge in chemistry and catalyzed at prototypic dimetal cofactors in biological enzymes with diverse functions. Analysis of intermediates is required to elucidate the reaction paths of reductive O2 cleavage. An oxidase protein from the bacterium Geobacillus kaustophilus, R2lox, was used for aerobic in-vitro reconstitution with only 57Fe(II) or Mn(II) plus 57F ...
DOI:
10.1016/j.bbabio.2019.148060

34. High prevalence of colistin resistance genes in German municipal wastewater

Author:
Kneis, David; Berendonk, Thomas U.; Heß, Stefanie
Source:
The Science of the total environment 2019 v.694 pp. 133454
ISSN:
0048-9697
Subject:
bacteria; colistin; metagenomics; microbial communities; municipal wastewater; resistance genes; ribosomal RNA; risk; Germany
Abstract:
... Bacterial resistance against the last-resort antibiotic colistin is of increasing concern on a global scale. Wastewater is suspected to be one of the pathways by which resistant bacteria and the respective genes are disseminated. We employed a metagenomics approach to detect and quantify colistin resistance genes in raw municipal wastewater sampled at 9 locations all over Germany (14 samples in to ...
DOI:
10.1016/j.scitotenv.2019.07.260

35. Nitrate effects on perchlorate reduction in a H2/CO2-based biofilm

Author:
Li, Haixiang; Zhou, Lijie; Lin, Hua; Zhang, Wenjie; Xia, Siqing
Source:
The Science of the total environment 2019 v.694 pp. 133564
ISSN:
0048-9697
Subject:
Zoogloea; bacteria; biofilm; carbon dioxide; denitrification; genes; hydrogen; microbial communities; nitrate nitrogen; nitrates; nitrogen; nitrogen cycle; oxidation; perchlorates; pollution load; porous media; water pollution
Abstract:
... The H2/CO2-based membrane biofilm reactor (H2/CO2-MBfR) that effectively combines microporous diffusions of H2 and CO2 is efficient in removing perchlorate (ClO4−). Nitrate (NO3−) is a common oxidized contaminant frequently coexists with ClO4− in water, with the NO3− concentration in most ClO4−-contaminated waters being several orders of magnitude higher than ClO4−. Determining the effect of NO3− ...
DOI:
10.1016/j.scitotenv.2019.07.370

36. Transport, retention, and release of Escherichia coli and Rhodococcus erythropolis through dry natural soils as affected by water repellency

Author:
Sepehrnia, Nasrollah; Bachmann, Jörg; Hajabbasi, Mohammad Ali; Rezanezhad, Fereidoun; Lichner, Lubomir; Hallett, Paul D.; Coyne, Mark
Source:
The Science of the total environment 2019 v.694 pp. 133666
ISSN:
0048-9697
Subject:
Escherichia coli; Rhodococcus erythropolis; agricultural soils; air drying; bacteria; human health; hydrophilicity; hydrophobicity; leachates; leaching; pathogens; plate count; risk; water flow; water repellent soils; wettability
Abstract:
... Microbial transport in soil affects pathogen retention, colonization, and innoculant delivery in bioremediating agricultural soils. Various bacteria strains residing in the fluid phases of soils are potential contaminants affecting human health. We measured the transport of hydrophilic Escherichia coli (E. coli) and hydrophobic Rhodococcus erythropolis (R. erythropolis) bacteria through initially ...
DOI:
10.1016/j.scitotenv.2019.133666

37. Accumulation of different shapes of microplastics initiates intestinal injury and gut microbiota dysbiosis in the gut of zebrafish

Author:
Qiao, Ruxia; Deng, Yongfeng; Zhang, Shenghu; Wolosker, Marina Borri; Zhu, Qiande; Ren, Hongqiang; Zhang, Yan
Source:
Chemosphere 2019 v.236 pp. 124334
ISSN:
0045-6535
Subject:
Danio rerio; bacteria; bioaccumulation; dysbiosis; fish; health effects assessments; inflammation; intestinal microorganisms; intestines; metabolism; microplastics; permeability; toxicity
Abstract:
... Different shapes of microplastics are widely detected in the environment and organisms and most of them remain in the gut. However, the influences of shapes on the bioaccumulation and toxicity of microplastics in the gut are largely unknown. Three shapes (bead, fragment, and fiber) of microplastics of comparable size in one dimension were prepared to exposure to zebrafish. The accumulation and tox ...
DOI:
10.1016/j.chemosphere.2019.07.065

38. Acetate metabolic requirement of avian pathogenic Escherichia coli promotes its intracellular proliferation within macrophage

Author:
Zhuge, Xiangkai; Sun, Yu; Jiang, Min; Wang, Juanfang; Tang, Fang; Xue, Feng; Ren, Jianluan; Zhu, Weiyun; Dai, Jianjun
Source:
Veterinary research 2019 v.50 no.1 pp. 31
ISSN:
1297-9716
Subject:
Escherichia coli; acetates; bacteria; birds; cytotoxicity; energy; eukaryotic cells; homeostasis; inducible nitric oxide synthase; inflammation; interleukin-1beta; interleukin-6; interleukin-8; lungs; macrophages; models; operon; pathogens; quantitative polymerase chain reaction; reverse transcriptase polymerase chain reaction; transcription (genetics); tumor necrosis factor-alpha; virulence
Abstract:
... Avian pathogenic Escherichia coli (APEC) is a facultative intracellular pathogen, and intracellular persistence in macrophages is essential for APEC extraintestinal dissemination. Until now, there is still no systematic interpretation of APEC intracellular proliferation. Intracellular survival factors, especially involved in pathometabolism, need to be further revealed. Acetate plays critical role ...
DOI:
10.1186/s13567-019-0650-2

39. A cross-sectional screening by next-generation sequencing reveals Rickettsia, Coxiella, Francisella, Borrelia, Babesia, Theileria and Hemolivia species in ticks from Anatolia

Author:
Brinkmann, Annika; Hekimoğlu, Olcay; Dinçer, Ender; Hagedorn, Peter; Nitsche, Andreas; Ergünay, Koray
Source:
Parasites & vectors 2019 v.12 no.1 pp. 26
ISSN:
1756-3305
Subject:
Babesia ovis; Borrelia; Coxiella; Francisella; Haemaphysalis; Hyalomma marginatum; Protozoa; Rhipicephalus bursa; Rhipicephalus sanguineus; Rickettsia; Theileria; avirulent strains; bacteria; disease transmission; disease vectors; domestic animals; endosymbionts; genes; high-throughput nucleotide sequencing; hosts; humans; metagenomics; mixed infection; nucleotide sequences; pathogenicity; phylogeny; plasmids; ribosomal RNA; screening; tick-borne diseases; ticks; Turkey (country)
Abstract:
... BACKGROUND: Ticks participate as arthropod vectors in the transmission of pathogenic microorganisms to humans. Several tick-borne infections have reemerged, along with newly described agents of unexplored pathogenicity. In an attempt to expand current information on tick-associated bacteria and protozoans, we performed a cross-sectional screening of ticks, using next-generation sequencing. Ticks s ...
DOI:
10.1186/s13071-018-3277-7

40. Additive Bayesian networks for antimicrobial resistance and potential risk factors in non-typhoidal Salmonella isolates from layer hens in Uganda

Author:
Hartnack, Sonja; Odoch, Terence; Kratzer, Gilles; Furrer, Reinhard; Wasteson, Yngvild; L’Abée-Lund, Trine M.; Skjerve, Eystein
Source:
BMC veterinary research 2019 v.15 no.1 pp. 212
ISSN:
1746-6148
Subject:
Bayesian theory; Salmonella; ampicillin; antibiotic resistance; bacteria; chloramphenicol; ciprofloxacin; data collection; farms; laying hens; multiple drug resistance; risk factors; sulfamethoxazole; tetracycline; trimethoprim; veterinary medicine; Uganda
Abstract:
... BACKGROUND: Multi-drug resistant bacteria are seen increasingly and there are gaps in our understanding of the complexity of antimicrobial resistance, partially due to a lack of appropriate statistical tools. This hampers efficient treatment, precludes determining appropriate intervention points and renders prevention very difficult. METHODS: We re-analysed data from a previous study using additiv ...
DOI:
10.1186/s12917-019-1965-y

41. Alternative method in Galleria mellonella larvae to study biofilm infection and treatment

Author:
Campos-Silva, Rodrigo; Brust, Flávia Roberta; Trentin, Danielle Silva; Macedo, Alexandre José
Source:
Microbial pathogenesis 2019 v.137 pp. 103756
ISSN:
0882-4010
Subject:
Galleria mellonella; Staphylococcus aureus; bacteria; bacterial contamination; biofilm; decision making; in vivo studies; inoculum; insect larvae; scanning electron microscopy; therapeutics
Abstract:
... In vivo studies are crucial decision-maker step in order to translate in vitro data to an applied therapy. Considering this we describe a simple method that analyzes and quantifies biofilm formation inside the Galleria mellonella larvae. Toothbrush bristles were employed as an abiotic surface to mimic a medical device. A standardized inoculum of Staphylococcus aureus was systemically injected in t ...
DOI:
10.1016/j.micpath.2019.103756

42. Anaplasma phagocytophilum evolves in geographical and biotic niches of vertebrates and ticks

Author:
Jaarsma, Ryanne I.; Sprong, Hein; Takumi, Katsuhisa; Kazimirova, Maria; Silaghi, Cornelia; Mysterud, Atle; Rudolf, Ivo; Beck, Relja; Földvári, Gábor; Tomassone, Laura; Groenevelt, Margit; Everts, Reinard R.; Rijks, Jolianne M.; Ecke, Frauke; Hörnfeldt, Birger; Modrý, David; Majerová, Karolina; Votýpka, Jan; Estrada-Peña, Agustín
Source:
Parasites & vectors 2019 v.12 no.1 pp. 328
ISSN:
1756-3305
Subject:
Anaplasma phagocytophilum; DNA; Ixodes persulcatus; Ixodes ricinus; bacteria; data collection; ecotypes; genes; haplotypes; niches; phylogeny; provenance; rodents; ticks; Japan; Korean Peninsula; Russia
Abstract:
... BACKGROUND: Anaplasma phagocytophilum is currently regarded as a single species. However, molecular studies indicate that it can be subdivided into ecotypes, each with distinct but overlapping transmission cycle. Here, we evaluate the interactions between and within clusters of haplotypes of the bacterium isolated from vertebrates and ticks, using phylogenetic and network-based methods. METHODS: T ...
DOI:
10.1186/s13071-019-3583-8

43. A new prokaryotic expression vector for the expression of antimicrobial peptide abaecin using SUMO fusion tag

Author:
Kim, Da Sol; Kim, Seon Woong; Song, Jae Min; Kim, Soon Young; Kwon, Kwang-Chul
Source:
BMC biotechnology 2019 v.19 no.1 pp. 13
ISSN:
1472-6750
Subject:
Bacillus subtilis; Escherichia coli; antibacterial properties; antibiotic resistance; bacteria; cecropins; chloroplasts; enzymes; genetic vectors; honey bees; manufacturing; recombinant proteins; solubility; viability
Abstract:
... BACKGROUND: Despite the growing demand for antimicrobial peptides (AMPs) for clinical use as an alternative approach against antibiotic-resistant bacteria, the manufacture of AMPs relies on expensive, small-scale chemical methods. The small ubiquitin-related modifier (SUMO) tag is industrially practical for increasing the yield of recombinant proteins by increasing solubility and preventing degrad ...
DOI:
10.1186/s12896-019-0506-x

44. An individual-carcass model for quantifying bacterial cross-contamination in an industrial three-stage poultry scalding tank

Author:
McCarthy, Zachary; Smith, Ben; Fazil, Aamir; Ryan, Shawn D.; Wu, Jianhong; Munther, Daniel
Source:
Journal of food engineering 2019 v.262 pp. 142-153
ISSN:
0260-8774
Subject:
Campylobacter jejuni; Food Safety and Inspection Service; World Health Organization; bacteria; cold treatment; cross contamination; defeathering; differential equation; evisceration; heat inactivation; mathematical models; microbiological risk assessment; model validation; pathogens; poultry; processing stages; scalding; slaughterhouses; Canada
Abstract:
... The World Health Organization has declared the scalding, defeathering, evisceration, and chilling processing stages in industrial poultry slaughterhouses as sites of cross-contamination. In response, we develop a novel ordinary differential equation model describing the transfer and thermal inactivation of pathogens between carcasses in an industrial three-stage scalding tank. The model provides a ...
DOI:
10.1016/j.jfoodeng.2019.05.013

45. Antibacterial activity and mannosylerythritol lipids against vegetative cells and spores of Bacillus cereus

Author:
Shu, Qin; Niu, Yongwu; Zhao, Wenjun; Chen, Qihe
Source:
Food control 2019 v.106 pp. 106711
ISSN:
0956-7135
Subject:
Bacillus cereus; antibacterial properties; antibiotics; bacteria; cell membranes; cell viability; cellular microenvironment; food processing; germination; growth curves; lipids; minimum inhibitory concentration; preservatives; scanning electron microscopes; spores; survival rate; transmission electron microscopes; vegetative cells
Abstract:
... This study aimed to investigate the antibacterial activity and underlying mechanism of mannosylerythritol lipids (MELs) against vegetative cells and spores of Gram-positive Bacillus cereus. The minimum inhibitory concentration and minimum bactericidal concentration of MELs was 1.25 mg/mL and 2.50 mg/mL, respectively. The growth curve assay and survival rate also showed that MELs had great antibact ...
DOI:
10.1016/j.foodcont.2019.106711

46. Antibacterial activity and mode of action of acetone crude leaf extracts of under-investigated Syzygium and Eugenia (Myrtaceae) species on multidrug resistant porcine diarrhoeagenic Escherichia coli

Author:
Famuyide, Ibukun M.; Aro, Abimbola O.; Fasina, Folorunso O.; Eloff, Jacobus N.; McGaw, Lyndy J.
Source:
BMC veterinary research 2019 v.15 no.1 pp. 162
ISSN:
1746-6148
Subject:
Eugenia; Syzygium; acetone; adhesion; antibacterial properties; antibiotic resistance; bacteria; bacterial adhesion; bioactive compounds; burden of disease; colistin; cytotoxicity; diarrhea; disease control; doxycycline; enterotoxigenic Escherichia coli; feed additives; human cell lines; indigenous species; intestinal mucosa; leaf extracts; lethal concentration 50; livestock feeds; mechanism of action; models; multiple drug resistance; pathogenesis; piglets; plants (botany); protective effect; therapeutics
Abstract:
... BACKGROUND: Diarrhoea, a global economically important disease burden affecting swine and, especially piglets, is commonly caused by infection with entero-toxigenic E. coli (ETEC). Adherence of ETEC to porcine intestinal epithelial cells following infection, is necessary for its pathogenesis. While antimicrobials are commonly given as therapy or as feed additives for prophylaxis against microbial ...
DOI:
10.1186/s12917-019-1914-9

47. Antibacterial activity of the noni fruit extract against Listeria monocytogenes and its applicability as a natural sanitizer for the washing of fresh-cut produce

Author:
Kang, Ji-Hoon; Song, Kyung Bin
Source:
Food microbiology 2019 v.84 pp. 103260
ISSN:
0740-0020
Subject:
Listeria monocytogenes; Morinda citrifolia; antibacterial properties; bacteria; color; death; fresh-cut produce; fruit extracts; hydrophobicity; image analysis; kale; membrane permeability; microbiological quality; nucleic acids; pathogens; proteins; romaine lettuce; sanitizers; scanning electron microscopy; sodium hypochlorite; spinach; surface roughness; washing
Abstract:
... This study was conducted to investigate the antibacterial activity of the noni fruit extract (NFE) against Listeria monocytogenes (ATCC, 19111 and 19115) and assess its applicability for the washing of fresh-cut produce. Based on the results of the disc diffusion test, L. monocytogenes (ATCC, 19111 and 19115) was susceptible to the activity of NFE than other pathogens studied. Additionally, result ...
DOI:
10.1016/j.fm.2019.103260

48. Antibacterial and antibiotic-modifying activities of fractions and compounds from Albizia adianthifolia against MDR Gram-negative enteric bacteria

Author:
Tchinda, Cedric F.; Sonfack, Gaiëlle; Simo, Ingrid K.; Çelik, İlhami; Voukeng, Igor K.; Nganou, Blaise K.; Bitchagno, Gabin T. M.; Ekti, Sultan Funda; Tene, Mathieu; Tane, Pierre; Beng, Veronique P.; Kuete, Victor
Source:
BMC complementary and alternative medicine 2019 v.19 no.1 pp. 120
ISSN:
1472-6882
Subject:
Albizia adianthifolia; alternative medicine; antibacterial properties; bacteria; beta-sitosterol; bronchitis; chemical structure; chromatography; colorimetry; erythromycin; intestinal microorganisms; methanol; minimum inhibitory concentration; multiple drug resistance; phenotype; roots; skin diseases; spectroscopy; stearic acid; stigmasterol; streptomycin; synergism; transporters; Cameroon
Abstract:
... BACKGROUND: Albizia adianthifolia (Schum.) is medicinally used in Cameroon to manage bronchitis and skin diseases. Our previous study documented the antibacterial potential of its roots’ methanol extract. In this study, methanol roots extract was subjected to chromatography techniques and fractions (AARa and AARb), sub-fractions (AARa1–4, AARb1–2 and AARb11–14) together with isolated phytochemical ...
DOI:
10.1186/s12906-019-2537-1

49. Antimicrobial activity of anthocyanins and catechins against foodborne pathogens Escherichia coli and Salmonella

Author:
Ma, Yong; Ding, Sujuan; Fei, Yanquan; Liu, Gang; Jang, Hongmei; Fang, Jun
Source:
Food control 2019 v.106 pp. 106712
ISSN:
0956-7135
Subject:
Bacteroides; Bifidobacterium; Desulfovibrio; Enterococcus; Escherichia coli; Norovirus; Salmonella; anthocyanins; antibacterial properties; antibiotic resistance; antibiotics; antioxidant activity; bacteria; financial economics; flavanols; food pathogens; foodborne illness; fungi; growth inhibitors; immunity; intestinal microorganisms; intestines; minimum inhibitory concentration; morbidity; mortality; parasites; polyphenols; probiotics; toxins; virulent strains
Abstract:
... The main foodborne pathogens are Norovirus, Enteric parasites, bacteria and fungi. Foodborne diseases can lead to high morbidity and mortality and result in huge economic losses. Some foodborne diseases are associated with antibiotic resistance, which is a significant problem throughout the world. To reduce the harm caused by antibiotics, it is important to find alternatives so that food is not in ...
DOI:
10.1016/j.foodcont.2019.106712

50. Antimicrobial activity of red wine and oenological extracts against periodontal pathogens in a validated oral biofilm model

Author:
Sánchez, María C.; Ribeiro-Vidal, Honorato; Esteban-Fernández, Adelaida; Bartolomé, Begoña; Figuero, Elena; Moreno-Arribas, María V.; Sanz, Mariano; Herrera, David
Source:
BMC complementary and alternative medicine 2019 v.19 no.1 pp. 145
ISSN:
1472-6882
Subject:
Actinobacillus actinomycetemcomitans; Actinomyces naeslundii; Fusobacterium nucleatum; Porphyromonas gingivalis; Streptococcus oralis; Veillonella parvula; alternative medicine; antibacterial properties; bacteria; biofilm; confocal laser scanning microscopy; dipping; grape seeds; hydroxyapatite; linear models; pathogens; periodontal diseases; plate count; polyphenols; propidium; quantitative polymerase chain reaction; red wines; viability
Abstract:
... BACKGROUND: Previous research findings support an antimicrobial effect of polyphenols against a variety of pathogens, but there is no evidence of this effect against periodontal pathogens in complex biofilms. The purpose of this study was to evaluate the antimicrobial activity of red wine and oenological extracts, rich in polyphenols, against the periodontal pathogens Porphyromonas gingivalis, Agg ...
DOI:
10.1186/s12906-019-2533-5