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You searched for: Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Subject term rapid methods Remove constraint Subject term: rapid methods
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1. 1,2-dithioglycol functionalised carbon nitride quantum dots as a “turn – off” fluorescent sensor for mercury ion detection

Author:
Jun Wang; Yu Cao; Chengyin Wang; Hui Chong; Guoxiu Wang
Source:
International journal of environmental analytical chemistry 2019 v.99 no.8 pp. 796-807
ISSN:
1029-0397
Subject:
carbon nitride; fluorescence; fluorescent dyes; lakes; mercury; pH; phosphates; quantum dots; rapid methods; ultraviolet radiation
Abstract:
... A kind of 1,2-dithioglycol (DTG) functionalised carbon nitride quantum dots (DTG-CNQDs) was designed for the first time by modifying DTG on the surface of carbon nitride quantum dots (CNQDs). The as-prepared DTG-CNQDs exhibit strong blue fluorescence under ultraviolet light and have a high quantum yield of 27%. Experiments show that Hg²⁺ has a good quenching effect on the fluorescence of DTG-CNQDs ...
DOI:
10.1080/03067319.2019.1611800

2. 2010–2015: How have conventional descriptive analysis methods really been used? A systematic review of publications

Author:
Pauline Lestringant; Julien Delarue; Hildegarde Heymann
Source:
Food quality and preference 2019 v.71 pp. 1-7
ISSN:
0950-3293
Subject:
alcoholic beverages; condiments; data analysis; oils; rapid methods; sensory properties; starch; systematic review
Abstract:
... Conventional descriptive analysis (DA) has been widely applied to describe the sensory characteristics of products. An analysis of the scientific literature was performed to better understand the context in which descriptive methods are utilized. When DA is used in methodological research, either to test the method itself, or to compare to new methods, is that representative of its use in applicat ...
DOI:
10.1016/j.foodqual.2018.05.011

3. 3D-Printed Pneumatic Microfluidic Mixer for Colorimetric Detection of Listeria monocytogenes

Author:
Ping Yao; Ronghui Wang; Xinge Xi; Yanbin Li; Steve Tung
Source:
Transactions of the ASABE v.62 no.3 pp. 841-850
ISSN:
2151-0032
Subject:
Listeria monocytogenes; air; color; colorimetry; enzyme-linked immunosorbent assay; prototypes; rapid methods; sample size; three-dimensional printing
Abstract:
... 3D printing can significantly improve the current fabrication techniques for microfluidic devices due to its ability to create truly 3D structures in a single step. In this study, an active pneumatic microfluidic mixer was designed and fabricated using an extrusion-based 3D printer and used for rapid detection of . The printed material of the mixer is flexible, semi-transparent, and inexpensive. T ...
DOI:
10.13031/trans.13245

4. 3′ end of eae gene-based fluorescence DNA nanosensor for detection of E. coli O157:H7

Author:
Farrokh Karimi; Nasrin Balazadeh; Bagher Eftekhari-Sis
Source:
Journal of applied genetics 2019 v.60 no.3-4 pp. 417-426
ISSN:
1234-1983
Subject:
Escherichia coli O157; bacteria; complementary DNA; diagnostic techniques; energy transfer; fluorescence; food industry; genes; graphene oxide; hybridization; nucleic acid hybridization; pathogens; public health; rapid methods; sensors (equipment)
Abstract:
... Escherichia coli O157:H7 bacterium as a zoonotic pathogen is one of the most important causative agents of foodborne illnesses worldwide. Due to the serious concerns in public health and enormous economic losses in agriculture and food industry, it is very necessary to develop novel technology–based methods for sensitive and rapid detection of this bacterium in contaminated resources. In this stud ...
DOI:
10.1007/s13353-019-00511-0

5. A Asp/Ce nanotube-based colorimetric nanosensor for H2O2-free and enzyme-free detection of cysteine

Author:
Yunfei Li; Ziying Zhang; Zhanhui Tao; Xiao Gao; Shuo Wang; Yaqing Liu
Source:
Talanta 2019 v.196 pp. 556-562
ISSN:
0039-9140
Subject:
aspartic acid; biosensors; blood serum; cerium; colorimetry; cost effectiveness; cysteine; detection limit; disease surveillance; hydrogen peroxide; nanotubes; nitrates; optical isomerism; oxidants; rapid methods
Abstract:
... A novel colorimetric nanosensor has been developed for high sensitive and selective detection of cysteine (Cys) based on the intrinsic oxidase-like activity of cerium nanotube coordinated with aspartic acid (Asp/Ce-NT). Under the function of Asp/Ce-NT, colorimetric reaction of TMB (3,3′,5,5′-tetramethylbenzidine) takes place within five minutes without the assistance of additional oxidizing agents ...
DOI:
10.1016/j.talanta.2019.01.011

6. A C-reactive protein immunosensor based on platinum nanowire / titania nanotube composite sensitized electrochemiluminescence

Author:
Zhou Rong; Fang Chen; Yan Jilin; Tu Yifeng
Source:
Talanta 2019 v.205 pp. 120135
ISSN:
0039-9140
Subject:
C-reactive protein; antibodies; atherosclerosis; detection limit; dielectric spectroscopy; electrochemiluminescence; electron microscopes; glass; immunosensors; indium tin oxide; inflammation; myocardial infarction; nanotubes; nanowires; platinum; rapid methods; regression analysis; titanium dioxide
Abstract:
... C-reactive protein (CRP) is one of the important indicators of inflammatory response. It plays as an essential role in diseases such as myocardial infarction and atherosclerosis. A simple and effective label-free electrochemiluminescent (ECL) immunosensor for quantitative detection of CRP is reported. The indium tin oxide coated glass was prefunctionalized with the composite of titania nanotubes a ...
DOI:
10.1016/j.talanta.2019.120135

7. A Colorimetric Strip for Rapid Detection and Real-Time Monitoring of Histamine in Fish Based on Self-Assembled Polydiacetylene Vesicles

Author:
Qiaofeng Li; Shuyue Ren; Yuan Peng; Yan Lv; Weiya Wang; Zhouping Wang; Zhixian Gao
Source:
Analytical chemistry 2019 v.92 no.1 pp. 1611-1617
ISSN:
1520-6882
Subject:
artificial intelligence; calorimetry; canned fish; colorimetry; histamine; marine fish; mobile telephones; monitoring; rapid methods; scombroid poisoning; temperature
Abstract:
... Self-assembled polydiacetylene (PDA) vesicles, with the distinct advantages of low-cost materials, simple preparation, and excellent chromatic properties, can be perfectly combined with a colorimetric strip for on-site inspection. Herein, without involving expensive reagents and instruments, a visual colorimetric strip based on well-prepared PDA vesicles was developed to analyze and monitor histam ...
DOI:
10.1021/acs.analchem.9b04927

8. A Combination of Real-Time PCR and High-Resolution Melting Analysis to Detect and Identify CpGV Genotypes Involved in Type I Resistance

Author:
Aurélie Hinsberger; Stéphane Theulier Saint Germain; Patrice Guerrero; Christine Blachère-López; Miguel López-Ferber; Sandrine Bayle
Source:
Viruses 2019 v.11 no.8 pp. -
ISSN:
1999-4915
Subject:
Cydia pomonella; Cydia pomonella granulovirus; DNA primers; biological control; genes; genotype; insect control; larvae; melting; melting point; orchards; quantitative polymerase chain reaction; rapid methods
Abstract:
... Cydia pomonella granulovirus, in particular CpGV-M isolate, is used as a biological control against the codling moth (CM), Cydia pomonella. As a result of intensive control over the years, codling moth populations have developed resistance against this isolate. This resistance is now called type I resistance. Isolates, among them, CpGV-R5, have been found that are able to overcome type I resistanc ...
DOI:
10.3390/v11080723
PubMed:
31390849
PubMed Central:
PMC6723291

9. A Comparative Review of Methods of Using Soil Colors and their Patterns for Wetland Ecology and Management

Author:
Stephanie A. Schmidt; Changwoo Ahn
Source:
Communications in soil science and plant analysis 2019 v.50 no.11 pp. 1293-1309
ISSN:
1532-2416
Subject:
biogeochemistry; cameras; color; colorimetry; digital images; ecosystems; hydric soils; hydrology; mobile telephones; photography; rapid methods; soil color; spectroscopy; wetlands
Abstract:
... Soil color patterns are essential to understand hydrologic regime and biogeochemical processes in wetland ecosystems. Munsell Soil Color Chart (MSCC) has been traditionally and predominantly used to identify and quantify hydric soil field indicators, but several simple, low-cost alternatives have become recently available to compare their efficacy in complementing the MSCC in soil color assessment ...
DOI:
10.1080/00103624.2019.1604737

10. A Flexible Acetylcholinesterase-Modified Graphene for Chiral Pesticide Sensor

Author:
Yunpeng Zhang; Xiaotong Liu; Shi Qiu; Qiuqi Zhang; Wei Tang; Hongtao Liu; Yunlong Guo; Yongqiang Ma; Xiaojun Guo; Yunqi Liu
Source:
Journal of the American Chemical Society 2019 v.141 no.37 pp. 14643-14649
ISSN:
1520-5126
Subject:
acetylcholinesterase; biocompatibility; circular dichroism spectroscopy; enantiomers; graphene; mobile telephones; pesticides; quantum mechanics; rapid methods
Abstract:
... Sensors based on graphene are promising devices for chemical and biological detection owing to their high sensitivity, biocompatibility, and low costs. However, for chiral recognition, which is very important in biological systems, graphene sensors remain unable to discriminate enantiomers. Here, using chiral pesticide molecules as an example, we realized a highly sensitive graphene chiral sensor ...
DOI:
10.1021/jacs.9b05724

11. A Green, Simple, and Rapid Detection for Amaranth in Candy Samples Based on the Fluorescence Quenching of Nitrogen-Doped Graphene Quantum Dots

Author:
Yaqi Li; Shilong Luo; Li Sun; Dezhao Kong; Jianguo Sheng; Kun Wang; Chunwang Dong
Source:
Food analytical methods 2019 v.12 no.7 pp. 1658-1665
ISSN:
1936-9751
Subject:
analytical methods; candy; detection limit; fluorescence; food additives; food safety; graphene; hydrogen bonding; moieties; pH; quality control; quantum dots; rapid methods; temperature
Abstract:
... With the increasing of the food safety awareness, the quality control of amaranth as the common food additives was significant for human’s physical health. The objective of this study was to establish a green, simple, and rapid fluorescence sensor for amaranth quantification detection. The nitrogen-doped graphene quantum dots (NGQDs) were synthesized under a friendly environment and non-toxic mate ...
DOI:
10.1007/s12161-019-01505-8

12. A High-Throughput Platform for the Generation of Synthetic Ab Clones by Single-Strand Site-Directed Mutagenesis

Author:
Eugenio Gallo
Source:
Molecular biotechnology 2019 v.61 no.6 pp. 410-420
ISSN:
1073-6085
Subject:
Escherichia coli; antibodies; antigens; clones; cost effectiveness; metadata; models; molecular cloning; protein synthesis; proteins; rapid methods; restriction endonucleases; screening; sequence analysis; site-directed mutagenesis; stop codon
Abstract:
... Current developments in meta-data analysis and predictive computational models offer alternative routes for the identification of antibodies. In silico-based technologies and NGS data analysis from Ab phage-display selections offer expanded selections of Ab candidates. Accordingly, the identified de novo Abs with predicted selectivity for a target antigen must undergo rapid gene synthesis for down ...
DOI:
10.1007/s12033-019-00171-9

13. A Novel Method for Generation of a Fingerprint Using Electronic Nose on the Example of Rapeseed Spoilage

Author:
Robert Rusinek; Marek Gancarz; Magdalena Krekora; Agnieszka Nawrocka
Source:
Journal of food science 2019 v.84 no.1 pp. 51-58
ISSN:
0022-1147
Subject:
Fourier transform infrared spectroscopy; cleaning; computer software; electronic nose; food microbiology; fungi; gas chromatography-mass spectrometry; headspace analysis; metabolites; polysaccharides; principal component analysis; quality control; rapeseed; rapid methods; raw materials; semiconductors; spoilage; volatile organic compounds
Abstract:
... The paper presents application of a new three‐parameter method for identification of volatile organic compounds (VOCs) and creation of fingerprints based on the impregnation time (tIM), cleaning time (tCL), and maximum response ([ΔR/R]ₘₐₓ) of chemically sensing sensors for detecting spoilage of agricultural commodities. The novelty of this method consists in the use of two additional parameters: a ...
DOI:
10.1111/1750-3841.14400

14. A PET and ESIPT based fluorescent probe for the imaging of hydrogen sulfide (H₂S) in live cells and zebrafish

Author:
Yaru Lu; Baoli Dong; Wenhui Song; Xiuqi Kong; Abdul Hadi Mehmood; Weiying Lin
Source:
Analytical methods 2019 v.11 no.26 pp. 3301-3306
ISSN:
1759-9679
Subject:
Danio rerio; analytical methods; fluorescence; fluorescent dyes; hydrogen sulfide; image analysis; rapid methods; thiolysis
Abstract:
... H₂S is an important signaling molecule in living systems and participates in a series of physiological and pathological processes. In situ and rapid detection of H₂S levels in living systems is of great importance to the in-depth study of its physiological and pathological roles. Herein, we present a new fluorescent probe (DFAN) for the detection of H₂S in live cells and zebrafish. The probe DFAN ...
DOI:
10.1039/c9ay00927b

15. A PNA-based Lab-on-PCB diagnostic platform for rapid and high sensitivity DNA quantification

Author:
Pawan Jolly; Joshua Rainbow; Anna Regoutz; Pedro Estrela; Despina Moschou
Source:
Biosensors & bioelectronics 2019 v.123 pp. 244-250
ISSN:
0956-5663
Subject:
DNA; biosensors; detection limit; gold; manufacturing; rapid methods
Abstract:
... We report the development of a Lab-on-PCB DNA diagnostic platform, exploiting peptide nucleic acid (PNA) sequences as probes. The study demonstrates the optimization and characterization of two commercial PCB manufacturing gold electroplating processes for biosensing applications. Using an optimized ratio of PNA with a spacer molecule (MCH), the lowest limit of detection (LoD) to date for PCB-base ...
DOI:
10.1016/j.bios.2018.09.006

16. A Portable Device for Rapid Detection of Human Serum Albumin using an immunoglobulin-coating-based Magnetoelastic Biosensor

Author:
Shengbo Sang; Yuchao Li; Xing Guo; Bo Zhang; Xianwei Xue; Kai Zhuo; Chun Zhao; Wendong Zhang; Zhongyun Yuan
Source:
Biosensors & bioelectronics 2019 v.141 pp. 111399
ISSN:
0956-5663
Subject:
antibodies; antigens; biosensors; blood serum; cost effectiveness; detection limit; human serum albumin; humans; immunoglobulin G; portable equipment; quantitative analysis; rapid methods; urine
Abstract:
... Abnormal protein concentration levels in human body fluids, such as urine, serum etc., are considered to associate with disease states, providing essential information for the pre-clinical diagnosis. This paper presents a wireless immunoglobulin-coated magnetoelastic (ME) biosensor for fast, cost-effective detections of human serum albumin (HSA) with small sample volumes at a microliter scale. Thi ...
DOI:
10.1016/j.bios.2019.111399

17. A Rapid Assessment Method to Identify Potential Groundwater Flooding Hotspots as Sea Levels Rise in Coastal Cities

Author:
Ellen Plane; Kristina Hill; Christine May
Source:
Water 2019 v.11 no.11 pp. -
ISSN:
2073-4441
Subject:
aquifers; buildings; cities; data collection; digital elevation models; dynamic models; ecosystems; government agencies; groundwater; human health; infiltration rate; infrastructure; planning; rapid methods; risk; sea level; shorelines; soil; stormwater; subsidence
Abstract:
... Sea level rise (SLR) will cause shallow unconfined coastal aquifers to rise. Rising groundwater can emerge as surface flooding and impact buried infrastructure, soil behavior, human health, and nearshore ecosystems. Higher groundwater can also reduce infiltration rates for stormwater, adding to surface flooding problems. Levees and seawalls may not prevent these impacts. Pumping may accelerate lan ...
DOI:
10.3390/w11112228

18. A Rapid Method for Analyzing Well Log Records in Preparation for Water Resource Mapping

Author:
Kurt O. Thomsen
Source:
Ground water 2019 v.57 no.5 pp. 778-783
ISSN:
0017-467X
Subject:
aquiclude; aquifers; databases; geographic information systems; geophysical logging; geophysics; groundwater; hydraulic conductivity; rapid methods; water management; Illinois
Abstract:
... The needs of subregional and local entities for water resource management are immediate, and required information is not forthcoming in a timely and relatively inexpensive manner. The following method allows one to use all available well record data to produce baseline hydrogeologic unit maps using geographic information system querying and mapping techniques. Subjective borehole and geophysical s ...
DOI:
10.1111/gwat.12869

19. A Rapid Method to Quantify the Biomass of Viable Acidithiobacillus ferrooxidans in Iron-based Bioleaching Matrix of Sewage Sludge

Author:
Decheng Jin; Lanlan Liu; Guanyu Zheng; Jianru Liang; Lixiang Zhou
Source:
Biochemical engineering journal 2019 pp. -
ISSN:
1369-703X
Subject:
Acidithiobacillus ferrooxidans; bioleaching; biomass; environmental factors; iron; oxidation; pH; rapid methods; sewage sludge
Abstract:
... Overlay plate counting is the traditional way to determine the biomass of viable Acidithiobacillus ferrooxidans in iron-based bioleaching matrix of sewage sludge. However, the time required is 12 days at a minimum. Here, a rapid method based on a quantitative relationship between the extant rate of iron bio-oxidation by Acidithiobacillus ferrooxidans and the CFU counts was developed. The method re ...
DOI:
10.1016/j.bej.2019.107360

20. A Selective, Protein-Based Fluorescent Sensor with Picomolar Affinity for Rare Earth Elements

Author:
Joseph A. Mattocks; Jackson V. Ho; Joseph A. Cotruvo
Source:
Journal of the American Chemical Society 2019 v.141 no.7 pp. 2857-2861
ISSN:
1520-5126
Subject:
Methylobacterium extorquens; bacteria; chelating agents; cytosol; fluorescence; metal ions; rapid methods; rare earth elements; recycling
Abstract:
... Sensitive yet rapid methods for detection of rare earth elements (REEs), including lanthanides (Lns), would facilitate mining and recycling of these elements. Here we report a highly selective, genetically encoded fluorescent sensor for Lns, LaMP1, based on the recently characterized protein, lanmodulin. LaMP1 displays a 7-fold ratiometric response to all Lnᴵᴵᴵs, with apparent Kds of 10–50 pM but ...
DOI:
10.1021/jacs.8b12155

21. A Simple and Rapid Method to Determine Sulfonation Degree of Lignosulfonates

Author:
Qi Li; Meijun Zeng; Duming Zhu; Hongming Lou; Yuxia Pang; Kexian Qiu; Jinhao Huang; Xueqing Qiu
Source:
BioEnergy research 2019 v.12 no.2 pp. 260-266
ISSN:
1939-1234
Subject:
absorbance; acid pulping; cationic surfactants; cetyltrimethylammonium bromide; coprecipitation; electrostatic interactions; equipment; lignin; lignosulfonates; purification methods; rapid methods; titration; water solubility
Abstract:
... Sulfonation degree is an important structural parameter of lignosulfonates which affect their water solubility, surface activity, and dispersing performance. Presently, the methods for determining sulfonation degree include elemental analysis and potentiometric titration; they have some shortcomings such as complex purification process, high equipment requirements, and time-consuming. Hence, a sim ...
DOI:
10.1007/s12155-019-09972-x

22. A Waterbody Typology Derived from Catchment Controls Using Self-Organising Maps

Author:
Eleanore L. Heasley; James D. A. Millington; Nicholas J. Clifford; Michael A. Chadwick
Source:
Water 2019 v.12 no.1 pp. -
ISSN:
2073-4441
Subject:
administrative management; artificial intelligence; compliance; flow; habitats; highlands; landscapes; managers; monitoring; morphometry; rapid methods; rivers; scientists; sediments; surface water; surveys; watersheds; England; Wales
Abstract:
... Multiple catchment controls contribute to the geomorphic functioning of river systems at the reach-level, yet only a limited number are usually considered by river scientists and managers. This study uses multiple morphometric, geological, climatic and anthropogenic catchment characteristics to produce a single national typology of catchment controls in England and Wales. Self-organising maps, a m ...
DOI:
10.3390/w12010078

23. A bacterial assay for rapid screening of IAA catabolic enzymes

Author:
Federica Brunoni; Silvio Collani; Jan Šimura; Markus Schmid; Catherine Bellini; Karin Ljung
Source:
Plant methods 2019 v.15 no.1 pp. 126
ISSN:
1746-4811
Subject:
Arabidopsis; bacteria; bacterial culture; biochemical pathways; electrospray ionization mass spectrometry; enzymatic reactions; enzyme activity; genes; glucose; glutamic acid; growth and development; homeostasis; in vitro studies; indole acetic acid; ligases; metabolites; mutants; oxidation; plant development; plant growth; rapid methods; recombinant proteins; screening; tandem mass spectrometry; transferases; ultra-performance liquid chromatography; uridine diphosphate; yeasts
Abstract:
... BACKGROUND: Plants rely on concentration gradients of the native auxin, indole-3-acetic acid (IAA), to modulate plant growth and development. Both metabolic and transport processes participate in the dynamic regulation of IAA homeostasis. Free IAA levels can be reduced by inactivation mechanisms, such as conjugation and degradation. IAA can be conjugated via ester linkage to glucose, or via amide ...
DOI:
10.1186/s13007-019-0509-6
PubMed:
31700527
PubMed Central:
PMC6827244

24. A capillary biosensor for rapid detection of Salmonella using Fe-nanocluster amplification and smart phone imaging

Author:
Huilin Zhang; Li Xue; Fengchun Huang; Siyuan Wang; Lei Wang; Ning Liu; Jianhan Lin
Source:
Biosensors & bioelectronics 2019 v.127 pp. 142-149
ISSN:
0956-5663
Subject:
Salmonella Typhimurium; air; bacteria; biosensors; chickens; color; detection limit; disease control; food pathogens; foodborne illness; hydrochloric acid; image analysis; ions; iron; magnetic materials; magnetism; mixing; mobile telephones; nanoparticles; phosphates; polysorbates; potassium; rapid methods; screening; virulent strains; washing
Abstract:
... Early screening of foodborne pathogenic bacteria is a key to prevent and control foodborne diseases. This study intended to develop a capillary biosensor for rapid and sensitive detection of Salmonella using the multi-column capillary for easy operation, the Fe-nanoclusters (FNCs) for signal amplification and the smart phone APP for image analysis. The multi-column capillary was successively prelo ...
DOI:
10.1016/j.bios.2018.11.042

25. A cell viability assessment approach based on electrical wound-healing impedance characteristics

Author:
Mingji Wei; Yecheng Zhang; Guoxiao Li; Ying Ni; Siqi Wang; Fei Zhang; Rongbiao Zhang; Ning Yang; Shihe Shao; Pan Wang
Source:
Biosensors & bioelectronics 2019 v.124-125 pp. 25-32
ISSN:
0956-5663
Subject:
biosensors; cell death; cell proliferation; cell viability; electrodes; hydrogen peroxide; models; monitoring; neoplasms; rapid methods; temperature
Abstract:
... Cell viability evaluation is very meaningful for cancer treatment and cell proliferation is an effective evaluation criterion for cell viability. Traditionally, cell proliferation rate is obtained only by monitoring for several cell cycles (about 12 h) and yet there is no rapid assessment method to evaluate cell proliferation. In this paper, a rapid, real-time and online assessment approach (about ...
DOI:
10.1016/j.bios.2018.09.080

26. A central composite face-centered design for optimizing the detection of Salmonella typhi with a fluorescence nanobiosensor using the microcontact method

Author:
V. Razavilar; H. Ahari; B. Akbari Adergani; A. A. Anvar
Source:
International journal of environmental science and technology 2019 v.16 no.8 pp. 4637-4646
ISSN:
1735-1472
Subject:
Escherichia coli; Salmonella Typhi; antibodies; antigens; fluorescence; hydrogen bonding; molecular imprinting; polymers; rapid methods; water pollution
Abstract:
... The rapid detection of Salmonella typhi can be accomplished by developing nanobiosensor kits. Accordingly, in the present study, a molecularly imprinted polymer (MIP) was developed, formed via covalent bonds among methacrylic acid (MAA) monomers and hydrogen bonds between MAA and antibodies. Using this MIP, S. typhi antigen was detected with a fluorescence converter. The S. typhi concentration cou ...
DOI:
10.1007/s13762-018-1871-z

27. A colorimetric method for the determination of different functional flavonoids using 2,2'-azino-bis-(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) and peroxidase

Author:
Francisco R. Marín; Josefa Hernández-Ruiz; Marino B. Arnao
Source:
Preparative biochemistry & biotechnology 2019 v.49 no.10 pp. 1033-1039
ISSN:
1532-2297
Subject:
absorption; biotechnology; colorimetry; hesperetin; liquid chromatography; naringenin; peroxidase; quercetin; rapid methods; rutin
Abstract:
... In many occasions it is necessary to use fast and simple methods, different to the chromatographic techniques, for the quantification of biomolecules such as flavonoids. Also, the flavonoid levels in some foodstuffs can be influenced by industrial extraction processes such as pressing and squeezing, resulting in modification of their functional value. For this purpose, we have developed a rapid me ...
DOI:
10.1080/10826068.2019.1650378

28. A colorimetric paper-based sensor for toltrazuril and its metabolites in feed, chicken, and egg samples

Author:
Zhongxing Wang; Jian Zhang; Liqiang Liu; Xiaoling Wu; Hua Kuang; Chuanlai Xu; Liguang Xu
Source:
Food chemistry 2019 v.276 pp. 707-713
ISSN:
0308-8146
Subject:
European Union; chickens; colorimetry; detection limit; eggs; haptens; inhibitory concentration 50; metabolites; monoclonal antibodies; rapid methods; screening; toltrazuril
Abstract:
... In this study, a sensitive monoclonal antibody (mAb) against toltrazuril (Tol) was developed based on a novel hapten. The 50% inhibitory concentrations (IC50) of toltrazuril and its metabolites ranged from 2.19 ng/mL to 4.21 ng/mL. Based on this mAb, a colorimetric paper-based sensor was developed for the rapid screening of Tol and its metabolites in samples. The proposed assay has cutoff values o ...
DOI:
10.1016/j.foodchem.2018.10.047

29. A competitive enzyme-linked immunosorbent assay for rapid detection of antibodies against Trichinella spiralis and T. britovi – one test for humans and swine

Author:
M. Gnjatovic; A. Gruden-Movsesijan; N. Miladinovic-Tasic; N. Ilic; S. Vasilev; J. Cvetkovic; Lj. Sofronic-Milosavljevic
Source:
Journal of helminthology 2019 v.93 no.1 pp. 33-41
ISSN:
1475-2697
Subject:
Trichinella britovi; Trichinella spiralis; Western blotting; enzyme-linked immunosorbent assay; epitopes; horses; hosts; humans; meat; monitoring; monoclonal antibodies; muscle larvae; parasites; rapid methods; swine; trichinosis; wild animals
Abstract:
... Infection with parasites from the Trichinella genus occurs in many vertebrates but disease only occurs in humans (trichinellosis). Humans are infected after the consumption of raw or undercooked meat from infected wild or domestic animals (usually swine or horses). Using the monoclonal antibody (mAb) 7C2C5, specific for an epitope unique to the muscle larvae of the genus Trichinella, we have devel ...
DOI:
10.1017/S0022149X17001092
PubMed:
29168448

30. A competitive immunosensor for ultrasensitive detection of sulphonamides from environmental waters using silver nanoparticles decorated single-walled carbon nanohorns as labels

Author:
Zhen Zhang; Mingyue Yang; Xiangyang Wu; Shuaibing Dong; Nuanfei Zhu; Eric Gyimah; Kun Wang; Yong Li
Source:
Chemosphere 2019 v.225 pp. 282-287
ISSN:
0045-6535
Subject:
antibodies; antigens; aquatic environment; carbon; carbon electrodes; electrochemistry; glass; gold; immunosensors; nanogold; nanoparticles; nanosilver; nitric acid; pollutants; rapid methods; silver; sulfamethazine; surface area
Abstract:
... A novel competitive electrochemical immunosensor based on Au nanodendrites (Au NDs)/silver nanoparticles (Ag NPs) @single-walled carbon nanohorns (SWCNHs) was established for sensitive determination of sulphonamides (SAs) in aquatic environments. The indirectly competitive binding system of the approach was composed of coating antigen that coated on Au NDs/glass carbon electrode (GCE), the target ...
DOI:
10.1016/j.chemosphere.2019.03.033

31. A comprehensive analysis of 201 pesticides for different herbal species-ready application using gas chromatography–tandem mass spectrometry coupled with QuEChERs

Author:
Yanwei Fu; Xiaowen Dou; Lei Zhang; Jiaan Qin; Meihua Yang; Jiaoyang Luo
Source:
Journal of chromatography 2019 v.1125 pp. 121730
ISSN:
1570-0232
Subject:
chlorpyrifos; cleaning; cortex; gas chromatography; ionization; medicinal plants; rapid methods; secondary metabolites; seeds; semen; spectrometers; tandem mass spectrometry
Abstract:
... Developing an analysis of multi-pesticide residues for different herbal species-ready applications is a challenge. In the present work, a comprehensive analysis was proposed for rapid detection of 201 pesticides in various medicinal herbs. Samples were extracted and cleaned up with a high throughput pretreatment approach (modified QuEChERS), and then detected by gas chromatograph coupled to an ele ...
DOI:
10.1016/j.jchromb.2019.121730

32. A critical review of analytical methods for determination of curcuminoids in turmeric

Author:
Venkata Subba Rao Kotra; Laishram Satyabanta; Tridib Kumar Goswami
Source:
Journal of food science and technology 2019 v.56 no.12 pp. 5153-5166
ISSN:
0022-1155
Subject:
Curcuma longa; biosensors; capillary electrophoresis; cuisine; detection limit; dietary supplements; drug formulations; electrochemistry; essential oils; fluorescence emission spectroscopy; high performance liquid chromatography; ingredients; monitoring; quality control; rapid methods; spectrophotometers; turmeric
Abstract:
... Turmeric (Curcuma longa) is one of the most important ingredients in Indian and Chinese cuisine. Curcuminoids and volatile oils present in turmeric are known for their functional and nutraceutical properties. Health benefits attributed to curcuminoids have resulted in their wide utilization in food and pharmaceutical formulations. Therefore, characterization and estimation of the curcuminoids in f ...
DOI:
10.1007/s13197-019-03986-1
PubMed:
31749463
PubMed Central:
PMC6838282

33. A direct DRS-FTIR probe for rapid detection and quantification of fluoroquinolone antibiotics in poultry egg-yolk

Author:
Ramsingh Kurrey; Mithlesh Mahilang; Manas Kanti Deb; Jayant Nirmalkar; Kamlesh Shrivas; Shamsh Pervez; Manish Kumar Rai; Joyce Rai
Source:
Food chemistry 2019 v.270 pp. 459-466
ISSN:
0308-8146
Subject:
absorption; antibiotics; ciprofloxacin; detection limit; egg yolk; eggs; monitoring; norfloxacin; poultry; quantitative analysis; rapid methods
Abstract:
... We report a novel diffuse reflectance-Fourier transforms infrared (DRS-FTIR) spectral monitoring of fluoroquinolone antibiotics such as ciprofloxacin (CIP) and norfloxacin (NOR) for their quantification in poultry egg-yolks. To the best of our knowledge, this is the first report to describe the rapid quantitative determination of fluoroquinolone antibiotics in poultry egg samples using DRS-FTIR. T ...
DOI:
10.1016/j.foodchem.2018.07.129

34. A dual-emission and mitochondria-targeted fluorescent probe for rapid detection of SO2 derivatives and its imaging in living cells

Author:
Guoxing Yin; Yabing Gan; Ting Yu; Tingting Niu; Peng Yin; Haimin Chen; Youyu Zhang; Haitao Li; Shouzhuo Yao
Source:
Talanta 2019 v.191 pp. 428-434
ISSN:
0039-9140
Subject:
Lewis bases; chemical bonding; colorimetry; emissions; fluorescence; fluorescent dyes; image analysis; mass spectrometry; membrane permeability; moieties; nuclear magnetic resonance spectroscopy; rapid methods; sulfur dioxide
Abstract:
... A novel mitochondria-targeted fluorescent probe for sensing SO₂ derivatives was constructed by integrating phenanthroimidazole and cyanine moieties. Excited by different channels, this probe exhibited unique dual-channel fluorescence-enhanced emissions and colorimetric response to HSO₃⁻ quickly (less than 20 s). The sensing process was confirmed to undergo nucleophilic addition of HSO₃⁻ to C˭C dou ...
DOI:
10.1016/j.talanta.2018.08.059

35. A dual-mode colorimetric sensor based on copper nanoparticles for the detection of mercury-(ii) ions

Author:
Qiang Li; Feng Wu; Mao Mao; Xiang Ji; Luyao Wei; Jieying Li; Lan Ma
Source:
Analytical methods 2019 v.11 no.31 pp. 4014-4021
ISSN:
1759-9679
Subject:
absorption; color; colorimetry; copper nanoparticles; detection limit; hydrogen peroxide; ions; mercury; oxidation; rapid methods; water solubility
Abstract:
... In this study, water-soluble citrate-capped copper nanoparticles (Cu NPs) were synthesized by a simple and rapid method. We found that these citrate-capped Cu NPs possessed an intrinsic peroxidase-like activity, which could catalyse the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to generate a light blue product in the presence of hydrogen peroxide (H₂O₂). It was also found that mercury ions ...
DOI:
10.1039/c9ay00843h

36. A dual-responsive fluorescent sensor for Hg²⁺ and thiols based on N-doped silicon quantum dots and its application in cell imaging

Author:
Sansan Shen; Bohui Huang; Xiaofeng Guo; Hong Wang
Source:
Journal of materials chemistry B 2019 v.7 no.44 pp. 7033-7041
ISSN:
2050-7518
Subject:
aqueous solutions; detection limit; dispersibility; fluorescence; glutathione; image analysis; mercury; quantum dots; rapid methods; silicon; thiols; wavelengths
Abstract:
... In this study, a simple and rapid method was designed to synthesize N-doped silicon quantum dots (N-SiQDs) with a maximum excitation wavelength and maximum emission wavelength of 347 nm and 440 nm, respectively. The prepared N-SiQDs are colorless in aqueous solution with excellent dispersibility, and the fluorescence quantum yield is 28.8%. The fluorescence intensity of the N-SiQDs decreases rapid ...
DOI:
10.1039/c9tb01502g

37. A facile quantification of hyaluronic acid and its crosslinking using gas-phase electrophoresis

Author:
Hung-Li Wang; Chin-Ping Huang; Chiu-Hun Su; De-Hao Tsai
Source:
Analytical and bioanalytical chemistry 2019 v.411 no.7 pp. 1443-1451
ISSN:
1618-2642
Subject:
activation energy; crosslinking; detection limit; electrophoresis; gases; gel chromatography; hyaluronic acid; molecular weight; monitoring; prototypes; rapid methods; temperature
Abstract:
... We report a facile, high-resolution approach to quantitatively characterize hyaluronic acid (HA) and study its crosslinking reaction using electrospray-differential mobility analysis (ES-DMA). Mobility size distributions, number concentrations, molecular mass distributions, and polydispersity index of HAs were obtained successfully via a rapid analysis by ES-DMA (< 30 min). The limit of detection, ...
DOI:
10.1007/s00216-019-01584-w

38. A feedback-controlling digital microfluidic fluorimetric sensor device for simple and rapid detection of mercury (II) in costal seawater

Author:
Qian Zhang; Xingcai Zhang; Xiaolin Zhang; Lan Jiang; Jingmei Yin; Peng Zhang; Shuang Han; Yunhua Wang; Guoxia Zheng
Source:
Marine pollution bulletin 2019 v.144 pp. 20-27
ISSN:
0025-326X
Subject:
automation; coastal water; droplets; fluorescent dyes; fluorometry; ingredients; mercury; microfluidic technology; monitoring; rapid methods; risk; salinity; seawater; water pollution
Abstract:
... By combination of miniaturization potential of digital microfluidics (DMF) and sensitivity of fluorescence probe, an integrated sensor device has been initially constructed for mercury detection in coastal waters. The actuation feature of the detecting target, seawater droplet, which remains unclear, was basically explored. To overcome a potential risk of driven failure, induced by diversity ion i ...
DOI:
10.1016/j.marpolbul.2019.04.063

39. A flexible smart membrane consisting of GO composite fibres and upconversion MSNs for microRNA detection

Author:
Tongxu Gu; Zhaohui Ren; Xiang Li; Jie Huang; Gaorong Han
Source:
Chemical communications 2019 v.55 no.62 pp. 9104-9107
ISSN:
1364-548X
Subject:
DNA probes; chemical reactions; graphene oxide; microRNA; nanoparticles; neoplasms; photoluminescence; polyurethanes; porous media; rapid methods; silica; single-stranded DNA
Abstract:
... We have developed a photoluminescent membrane for microRNA detection, consisting of chemically modified mesoporous silica nanoparticles (CaF₂:Yb/Ho@MSNs) attached, via single stranded DNA probes, to flexible polyurethane fibres coated with graphene oxide (GO). By detecting the release of the luminescent nanoparticles resulting from complementary co-hybridization between target miRNA sequences and ...
DOI:
10.1039/c9cc02907a

40. A flexible-imprinted capacitive sensor for rapid detection of adrenaline

Author:
Dhanjai; Nancy Yu; Samuel M. Mugo
Source:
Talanta 2019 v.204 pp. 602-606
ISSN:
0039-9140
Subject:
Danio rerio; aniline; biomimetics; biosensors; brain; carbon; detection limit; epinephrine; moieties; monitoring; nanocrystals; nanosheets; phenylboronic acids; polydimethylsiloxane; rapid methods
Abstract:
... This article demonstrates a non-enzymatic biomimetic adrenaline capacitive sensor fabricated inexpensively by layer-by-layer (LbL) assembly. The LbL assembly consists of polydimethylsiloxane (PDMS) substrate, carbon nanotube-cellulose nanocrystals (CNC/CNT) nanofilms (first layer) with adrenaline imprinted poly (aniline/phenylboronic acid) (pANI/PBA) moieties (second layer). The flexible sensor ha ...
DOI:
10.1016/j.talanta.2019.06.016

41. A fluorescence immunoassay based on CdTe : Zn/ZnS quantum dots for the rapid detection of bacteria, taking Delftia tsuruhatensis CM’13 as an example

Author:
Yao Ruan; Huanhuan Xu; Jinlu Yu; Qian Chen; Lihong Gu; Ailing Guo
Source:
RSC advances 2019 v.10 no.2 pp. 1042-1049
ISSN:
2046-2069
Subject:
Delftia; antibodies; antigens; biocompatibility; detection limit; enzyme-linked immunosorbent assay; fluorescence; fluorescent antibody technique; goats; photoluminescence; rapid methods
Abstract:
... A fluorescence immunoassay has been widely applied in different fields due to its high sensitivity, simple operations, and high accuracy. Quantum dots (QDs) are often selected as labels in a fluorescence immunoassay due to their high fluorescence, better stability, and biocompatibility. In this study, novel doped CdTe : Zn/ZnS QDs with stability and a high photoluminescence quantum yield (40.78%) ...
DOI:
10.1039/c9ra08651j

42. A fluorescence nanobiosensor for detection of Campylobacter jejuni DNA in milk based on Au/Ag bimetallic nanoclusters

Author:
Zahra Dehghani; Morteza Hosseini; Javad Mohammadnejad
Source:
Journal of food measurement & characterization 2019 v.13 no.3 pp. 1797-1804
ISSN:
2193-4126
Subject:
Campylobacter jejuni; DNA; DNA probes; cytosine; detection limit; fluorescence; gold; hybridization; microbial detection; milk; nanoparticles; nanosilver; nucleotides; rapid methods; silver
Abstract:
... We designed a rapid method for DNA sensing for detection of campylobacter jejuni based on a selective DNA probe. A sequence containing 12 cytosine nucleotides was applied as a scaffold for making Au/Ag nanocluster. This sequence along with a 30 nucleotides selective probe was used for campylobacter jejuni DNA detection. The Au/Ag nanocluster showed a turn-off fluorescence response in presence of t ...
DOI:
10.1007/s11694-019-00098-4

43. A framework for application of quantitative property-property relationships (QPPRs) in physiologically based pharmacokinetic (PBPK) models for high-throughput prediction of internal dose of inhaled organic chemicals

Author:
Sandrine F. Chebekoue; Kannan Krishnan
Source:
Chemosphere 2019 v.215 pp. 634-646
ISSN:
0045-6535
Subject:
absorbed dose; blood; breathing; chemical structure; data collection; humans; models; organic compounds; partition coefficients; pharmacokinetics; prediction; prioritization; rapid methods; screening; toxicity testing; uncertainty analysis
Abstract:
... New generation of toxicological tests and assessment strategies require validated toxicokinetic data or models that are lacking for most chemicals. This study aimed at developing a quantitative property-property relationship (QPPR)-based human physiologically based pharmacokinetic (PBPK) modeling framework for high-throughput predictions of inhalation toxicokinetics of organic chemicals. A PBPK mo ...
DOI:
10.1016/j.chemosphere.2018.10.041

44. A fully portable microchip real‐time polymerase chain reaction for rapid detection of pathogen

Author:
Rui Tong; Lijuan Zhang; Qi Song; Chuandeng Hu; Xuee Chen; Kai Lou; Xiuqing Gong; Yibo Gao; Weijia Wen
Source:
Electrophoresis 2019 v.40 no.12-13 pp. 1699-1707
ISSN:
0173-0835
Subject:
Escherichia coli O157; Salmonella; electrophoresis; heat; microbial detection; microchip technology; pathogens; point-of-care systems; quantitative polymerase chain reaction; rapid methods
Abstract:
... Point‐of‐care detection for pathogen is of critical need for wide epidemic warning and medical diagnosis. In this work, we have designed and developed a fully portable and integrated microchip based real‐time polymerase chain reaction machine for rapid pathogen detection. The instrument consists of three functional components including heating, optical, and electrical modules, which are integrated ...
DOI:
10.1002/elps.201900090

45. A global slope unit-based method for the near real-time prediction of earthquake-induced landslides

Author:
Hakan Tanyas; Mauro Rossi; Massimiliano Alvioli; Cees J. van Westen; Ivan Marchesini
Source:
Geomorphology 2019 v.327 pp. 126-146
ISSN:
0169-555X
Subject:
geomorphology; hydrology; inventories; landscapes; landslides; models; prediction; rapid methods; regression analysis
Abstract:
... Rapid assessment of spatial distribution of earthquake-induced landslides could provide valuable information in the emergency response phase. Previous studies proposed global analyses with the aim of predicting earthquake-induced landslide distributions in near real-time. However, in all those studies, mapping units are constituted by pixels, which do not reflect homogeneously distributed physical ...
DOI:
10.1016/j.geomorph.2018.10.022

46. A global-scale assessment of fish mercury concentrations and the identification of biological hotspots

Author:
David G. Buck; David C. Evers; Evan Adams; Joseph DiGangi; Bjorn Beeler; Jan Samánek; Jindrich Petrlik; Madeline A. Turnquist; Olga Speranskaya; Kevin Regan; Sarah Johnson
Source:
Science of the total environment 2019 v.687 pp. 956-966
ISSN:
0048-9697
Subject:
bioavailability; environmental monitoring; fish; foraging; latitude; mercury; methylmercury compounds; models; piscivores; rapid methods; surface water; taxonomy; trophic levels
Abstract:
... We present data on a rapid assessment of fish Hg concentrations from 40 different waterbodies in 26 countries that includes data on 451 fish of 92 species. Significant differences in fish Hg concentrations were observed across fish foraging guilds and in general, higher trophic level fish (i.e., piscivores and carnivores) showed the highest mean total Hg (THg) concentrations. However, elevated THg ...
DOI:
10.1016/j.scitotenv.2019.06.159

47. A high-throughput quantification of resin and rubber contents in Parthenium argentatum using near-infrared (NIR) spectroscopy

Author:
Zinan Luo; Kelly R. Thorp; Hussein Abdel-Haleem
Source:
Plant methods 2019 v.15 no.1 pp. 154
ISSN:
1746-4811
Subject:
Parthenium argentatum; cultivars; germplasm conservation; guayule; irrigation; least squares; models; near-infrared spectroscopy; prediction; rapid methods; resins; rubber; semiarid zones; wavelengths; Arizona
Abstract:
... BACKGROUND: Guayule (Parthenium argentatum A. Gray), a plant native to semi-arid regions of northern Mexico and southern Texas in the United States, is an alternative source for natural rubber (NR). Rapid screening tools are needed to replace the current labor-intensive and cost-inefficient method for quantifying rubber and resin contents. Near-infrared (NIR) spectroscopy is a promising technique ...
Handle:
10113/6788270
DOI:
10.1186/s13007-019-0544-3
PubMed:
31889978
PubMed Central:
PMC6916029
CHORUS:
10.1186/s13007-019-0544-3

48. A highly sensitive DNA aptamer-based fluorescence assay for sarcosine detection down to picomolar levels

Author:
Canan Özyurt; Zeynep Çelik Canbay; Erhan Dinçkaya; Serap Evran
Source:
International journal of biological macromolecules 2019 v.129 pp. 91-97
ISSN:
0141-8130
Subject:
DNA; derivatization; disease diagnosis; fluorescence; graphene; human serum albumin; metabolites; nucleotide aptamers; rapid methods; sarcosines; systematic evolution of ligands by exponential enrichment; urea; urine
Abstract:
... Sarcosine is an amino acid derivative, which is considered as a key metabolite in various metabolic processes. Therefore, simple and sensitive detection methods are needed for further understanding its metabolic role and diagnostic value. In this study, we developed a novel method that meets the need for practical and sensitive detection in a complex medium mimicking urine conditions. For this aim ...
DOI:
10.1016/j.ijbiomac.2019.02.030

49. A highly sensitive ultra-high performance liquid chromatography/tandem mass spectrometry method with in-source fragmentation for rapid quantification of raspberry ketone

Author:
Bo Yuan; Danyue Zhao; Ruoyuan Du; Dushyant Kshatriya; Nicholas T. Bello; James E. Simon; Qingli Wu
Source:
Yàowù shípǐn fēnxī 2019 v.27 no.3 pp. 778-785
ISSN:
1021-9498
Subject:
Rubus idaeus; anti-obesity agents; dissociation; farms; food additives; high performance liquid chromatography; ionization; metabolomics; quality control; rapid methods; raspberries; tandem mass spectrometry; ultra-performance liquid chromatography
Abstract:
... Raspberry ketone (RK) is the characteristic aromatic compound in raspberry (Rubus idaeus L.) with wide applications as food additive and anti-obesity agent. However, quantification of RK has presented difficulties in MS detection and reliable LC-MS method for RK analysis in literature is in limit to date. In order to facilitate quality control of raspberry derived products and RK metabolomics stud ...
DOI:
10.1016/j.jfda.2018.07.005

50. A highly specific fluorescent probe for rapid detection of hypochlorous acid in vivo and in water samples

Author:
Huan FengThese authors contributed equally to this work and they should be regarded as co-first authors.; Yue Wang; Jianping Liu; Zhiqiang Zhang; Xinyi Yang; Rong Chen; Qingtao Meng; Run Zhang
Source:
Journal of materials chemistry B 2019 v.7 no.24 pp. 3909-3916
ISSN:
2050-7518
Subject:
Danio rerio; adults; chemistry; colorimetry; cytotoxicity; detection limit; fluorescence; fluorescent dyes; human health; image analysis; mice; rapid methods
Abstract:
... Hypochlorous acid (HOCl) is closely related to human health and is widely used in our daily lives. Accordingly, detection of HOCl in live organisms and natural water samples is significantly important to human and animal health. In this paper, a novel chromogenic and fluorogenic probe (PI) was prepared for HOCl detection with high sensitivity and specificity. PI exhibits weak fluorescence emission ...
DOI:
10.1039/c9tb00551j