1
|
Kavitake D, Singh SP, Kandasamy S, Devi PB, Shetty PH. Report on aflatoxin-binding activity of galactan exopolysaccharide produced by Weissella confusa KR780676. 3 Biotech 2020; 10:181. [PMID: 32257737 DOI: 10.1007/s13205-020-02173-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 03/19/2020] [Indexed: 12/15/2022] Open
Abstract
Galactan exopolysaccharide (EPS) produced by Weissella confusa KR780676 isolated from an Indian traditional fermented food has been reported earlier. In this manuscript, we have studied aflatoxin-binding ability of this galactan EPS. Aflatoxin B1 (AFB1) binding ability of galactan EPS was observed in an increasing trend with increasing EPS concentration (20-100 mg/mL). At lower concentrations (< 20 mg/mL) of EPS, the binding activity was undetectable, while notable binding was seen from 30 mg/mL. Enhanced AFB1 binding (32.40%) was recorded at 50 mg/mL of EPS and it increased gradually up to 34.79% at 100 mg/mL concentrations of EPS. The intensity of bands in high-performance thin-layer chromatography (HPTLC) analysis confirms the AFB1 binding efficiency of galactan EPS, which shows its potential application for removal of toxins in food and feed industry. Galactan EPS binding activity to AFB1 is further studied with particle size analysis (PSA). This is the first study reporting the aflatoxin-binding activity of any kind of EPS from lactic acid bacteria.
Collapse
|
2
|
Sergeyeva T, Yarynka D, Piletska E, Linnik R, Zaporozhets O, Brovko O, Piletsky S, El'skaya A. Development of a smartphone-based biomimetic sensor for aflatoxin B1 detection using molecularly imprinted polymer membranes. Talanta 2019; 201:204-210. [PMID: 31122412 DOI: 10.1016/j.talanta.2019.04.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 04/02/2019] [Accepted: 04/06/2019] [Indexed: 10/27/2022]
Abstract
A novel smartphone-based optical biomimetic sensor based on free-standing molecularly imprinted polymer (MIP) membranes was developed for rapid and sensitive point-of-care detection of aflatoxin B1. The developed MIP membranes were capable of selective recognition of the target analyte and, at the same time, of generation of a fluorimetric sensor response, which could be registered using the camera of a smartphone and analysed using image analysis. The developed system provides a possibility of synchronous detection of aflatoxin B1 in 96 channels. UV irradiation of aflatoxin B1, selectively bound by the MIP membranes from the analysed samples, initiated fluorescence of aflatoxin B1 with intensity directly proportional to its concentration. The composition of the MIP membranes used as a recognition element was optimised taking into account data of computational modelling. Two functional monomers (2-acrylamido-2-methyl-1-propansulfonic acid and acrylamide) were identified as optimal for the formation of aflatoxin B1-selective binding sites in the structure of the MIP membranes. Working characteristics of the smartphone-based sensor system were also estimated. The influence of pH and of buffer and NaCl concentrations on the smartphone-based sensor responses were studied. High selectivity of the developed sensor system towards aflatoxin B1 was confirmed in experiments with the close structural analogue of the target analyte - aflatoxin G2, and ochratoxin A. The detection limit for aflatoxin B1 using the smartphone-based sensor systems was found to be 20 ng mL-1 for the sensor based on MIP membranes synthesised with acrylamide as a functional monomer. The storage stability of the recognition elements of the developed sensors was estimated as one year when stored at 22 °C. The possibility to detect the aflatoxin B1 in contaminated food samples was shown. The MIP-membrane-based sensor system provided a convenient point-of-care approach in food safety testing.
Collapse
Affiliation(s)
- Tetyana Sergeyeva
- Institute of Molecular Biology and Genetics, 150 Zabolotnogo str., 03680, Kiev, Ukraine.
| | - Daria Yarynka
- Institute of Molecular Biology and Genetics, 150 Zabolotnogo str., 03680, Kiev, Ukraine
| | - Elena Piletska
- University of Leicester, Chemistry Department, College of Science and Engineering, LE1 7RH, Leicester, UK
| | - Rostyslav Linnik
- Taras Shevchenko National University of Kyiv, Department of Chemistry, 64/13 Volodymyrska Street, 01601, Kiev, Ukraine
| | - Olga Zaporozhets
- Taras Shevchenko National University of Kyiv, Department of Chemistry, 64/13 Volodymyrska Street, 01601, Kiev, Ukraine
| | - Oleksandr Brovko
- Institute of Macromolecular Chemistry, 48 Kharkivske Shosse, 02160, Kiev, Ukraine
| | - Sergey Piletsky
- University of Leicester, Chemistry Department, College of Science and Engineering, LE1 7RH, Leicester, UK
| | - Anna El'skaya
- Institute of Molecular Biology and Genetics, 150 Zabolotnogo str., 03680, Kiev, Ukraine
| |
Collapse
|
3
|
Bhardwaj H, Singh C, Kotnala RK, Sumana G. Graphene quantum dots-based nano-biointerface platform for food toxin detection. Anal Bioanal Chem 2018; 410:7313-7323. [DOI: 10.1007/s00216-018-1341-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 08/19/2018] [Accepted: 08/22/2018] [Indexed: 01/18/2023]
|
4
|
Sergeyeva T, Yarynka D, Piletska E, Lynnik R, Zaporozhets O, Brovko O, Piletsky S, El'skaya A. Fluorescent sensor systems based on nanostructured polymeric membranes for selective recognition of Aflatoxin B1. Talanta 2017; 175:101-107. [PMID: 28841965 DOI: 10.1016/j.talanta.2017.07.030] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/06/2017] [Accepted: 07/10/2017] [Indexed: 11/15/2022]
Abstract
Nanostructured polymeric membranes for selective recognition of aflatoxin B1 were synthesized in situ and used as highly sensitive recognition elements in the developed fluorescent sensor. Artificial binding sites capable of selective recognition of aflatoxin B1 were formed in the structure of the polymeric membranes using the method of molecular imprinting. A composition of molecularly imprinted polymer (MIP) membranes was optimized using the method of computational modeling. The MIP membranes were synthesized using the non-toxic close structural analogue of aflatoxin B1, ethyl-2-oxocyclopentanecarboxylate as a dummy template. The MIP membranes with the optimized composition demonstrated extremely high selectivity towards aflatoxin B1 (AFB1). Negligible binding of close structural analogues of AFB1 - aflatoxins B2 (AFB2), aflatoxin G2 (AFG2), and ochratoxin A (OTA) was demonstrated. Binding of AFB1 by the MIP membranes was investigated as a function of both type and concentration of the functional monomer in the initial monomer composition used for the membranes' synthesis, as well as sample composition. The conditions of the solid-phase extraction of the mycotoxin using the MIP membrane as a stationary phase (pH, ionic strength, buffer concentration, volume of the solution, ratio between water and organic solvent, filtration rate) were optimized. The fluorescent sensor system based on the optimized MIP membranes provided a possibility of AFB1 detection within the range 14-500ngmL-1 demonstrating detection limit (3Ϭ) of 14ngmL-1. The developed technique was successfully applied for the analysis of model solutions and waste waters from bread-making plants.
Collapse
Affiliation(s)
- Tetyana Sergeyeva
- Institute of Molecular Biology and Genetics, 150 Zabolotnogo str., 03680 Kiev, Ukraine.
| | - Daria Yarynka
- Institute of Molecular Biology and Genetics, 150 Zabolotnogo str., 03680 Kiev, Ukraine; National University "Kyiv-Mohyla Academy", 2 Skovorody str., 04070 Kiev, Ukraine
| | - Elena Piletska
- University of Leicester, Chemistry Department, College of Science and Engineering, LE1 7RH Leicester, UK
| | - Rostyslav Lynnik
- Taras Shevchenko National University of Kyiv, Department of Chemistry, 64/13 Volodymyrska str., 01601 Kiev, Ukraine
| | - Olga Zaporozhets
- Taras Shevchenko National University of Kyiv, Department of Chemistry, 64/13 Volodymyrska str., 01601 Kiev, Ukraine
| | - Oleksandr Brovko
- Institute of Macromolecular Chemistry, 48 Kharkivske Shosse, 02160 Kiev, Ukraine
| | - Sergey Piletsky
- University of Leicester, Chemistry Department, College of Science and Engineering, LE1 7RH Leicester, UK
| | - Anna El'skaya
- Institute of Molecular Biology and Genetics, 150 Zabolotnogo str., 03680 Kiev, Ukraine
| |
Collapse
|
5
|
Abstract
Aflatoxins are toxic carcinogenic secondary metabolites produced predominantly by two fungal species: Aspergillus flavus and Aspergillus parasiticus. These fungal species are contaminants of foodstuff as well as feeds and are responsible for aflatoxin contamination of these agro products. The toxicity and potency of aflatoxins make them the primary health hazard as well as responsible for losses associated with contaminations of processed foods and feeds. Determination of aflatoxins concentration in food stuff and feeds is thus very important. However, due to their low concentration in foods and feedstuff, analytical methods for detection and quantification of aflatoxins have to be specific, sensitive, and simple to carry out. Several methods including thin-layer chromatography (TLC), high-performance liquid chromatography (HPLC), mass spectroscopy, enzyme-linked immune-sorbent assay (ELISA), and electrochemical immunosensor, among others, have been described for detecting and quantifying aflatoxins in foods. Each of these methods has advantages and limitations in aflatoxins analysis. This review critically examines each of the methods used for detection of aflatoxins in foodstuff, highlighting the advantages and limitations of each method. Finally, a way forward for overcoming such obstacles is suggested.
Collapse
|
6
|
Cobzac SC, Casoni D, Fazakaş AL, Sârbu C. DETERMINATION OF FOOD SYNTHETIC DYES IN POWDERS FOR JELLY DESSERTS USING SLIT-SCANNING DENSITOMETRY AND IMAGE ANALYSIS METHODS. J LIQ CHROMATOGR R T 2012. [DOI: 10.1080/10826076.2012.676875] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Simona Codruţa Cobzac
- a Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University , Cluj Napoca , România
| | - Dorina Casoni
- a Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University , Cluj Napoca , România
| | - Alexandru Lucian Fazakaş
- a Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University , Cluj Napoca , România
| | - Costel Sârbu
- a Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University , Cluj Napoca , România
| |
Collapse
|
7
|
Abstract
AbstractCarcinogenic and mutagenic properties of aflatoxin species are known in literature. Their intake over a long time period might be health-dangerous for human even at trace levels. It is well known that different foodstuffs can be contaminated by aflatoxin species through growing and storage. Due to the serious health effects, sensitive determination of aflatoxin species in any matrices related with the human being is very crucial at trace levels. In literature, there are sensitive techniques to analyze the different samples for the contents of their aflatoxin species. Each technique has some advantages and disadvantages over the other techniques. This review aims to summarize the different health effects of aflatoxin species, development of analytical techniques and applications of developed techniques in a variety of matrices.
Collapse
|
8
|
Casoni D, Tuhuţiu IA, Sârbu C. SIMULTANEOUS DETERMINATION OF PARABENS IN PHARMACEUTICAL PREPARATIONS USING HIGH-PERFORMANCE THIN-LAYER CHROMATOGRAPHY AND IMAGE ANALYSIS. J LIQ CHROMATOGR R T 2011. [DOI: 10.1080/10826076.2011.571141] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Dorina Casoni
- a Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University , Cluj Napoca, România
| | - Ioana Anamaria Tuhuţiu
- a Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University , Cluj Napoca, România
| | - Costel Sârbu
- a Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University , Cluj Napoca, România
| |
Collapse
|
9
|
Rahmani A, Jinap S, Soleimany F. Qualitative and Quantitative Analysis of Mycotoxins. Compr Rev Food Sci Food Saf 2009; 8:202-251. [DOI: 10.1111/j.1541-4337.2009.00079.x] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
10
|
Johnsson R, Träff G, Sundén M, Ellervik U. Evaluation of quantitative thin layer chromatography using staining reagents. J Chromatogr A 2007; 1164:298-305. [PMID: 17678935 DOI: 10.1016/j.chroma.2007.07.029] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2007] [Revised: 07/10/2007] [Accepted: 07/17/2007] [Indexed: 11/26/2022]
Abstract
Thin layer chromatography (TLC) using staining reagents is a superior method for analyzing organic compounds without chromophores. It is fast, versatile and sometimes the only viable method. We have investigated quantitative TLC using staining reagents, in combination with modern image analysis software. Our results show that it is possible to get reliable measurements, suitable for high-throughput screening or physical organic investigations. The range of detection and the errors for the different parts of the process are illustrated. We show that the errors are largely due to the staining process and can be diminished by measuring ratios of compounds.
Collapse
|
11
|
Affiliation(s)
- Joerg Stroka
- a Food Products Unit , Joint Research Centre , European Commission , Ispra , 21020 , Italy
| | - Bernd Spangenberg
- b University of Applied Sciences Offenburg , Badstrasse 24, Offenburg , 77652 , Germany
| | - Elke Anklam
- a Food Products Unit , Joint Research Centre , European Commission , Ispra , 21020 , Italy
| |
Collapse
|
12
|
Gilbert J, Vargas EA. Advances in Sampling and Analysis for Aflatoxins in Food and Animal Feed. ACTA ACUST UNITED AC 2003. [DOI: 10.1081/txr-120024099] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
13
|
Abstract
The TLC analysis of agricultural products, foods, beverages, and plant constituents is reviewed for the period from mid-1995 to mid-1999. Techniques and applications for a wide range of analyte and sample matrix types are covered, with specification of the particular layers, mobile phases, detection methods, and quantification conditions in many cases.
Collapse
Affiliation(s)
- J Sherma
- Department of Chemistry, Lafayette College, Easton, PA 18042, USA
| |
Collapse
|
14
|
Abstract
The stability of tetracycline in methanol solution was investigated by UV-visible spectroscopy, HPLC and TLC methods. After dissolution in methanol, tetracycline decomposed rapidly under the influence of light and atmospheric oxygen, forming more than fourteen different degradation products. None of the previously reported degradation products, such as the epi- and anhydro-compounds, were detected as the final degradation products. The molecular structures for eight of the compounds were suggested by their product-ion mass spectra. A degradation sequence was proposed for the reactions of tetracycline with methanol. A new HPLC-MS mobile phase was developed, which solved the clogging problem at the interface between the HPLC and MS chamber and enabled a high separation efficiency.
Collapse
Affiliation(s)
- Y Liang
- Department of Chemistry, University of Arizona, Tucson 85721, USA
| | | | | |
Collapse
|
15
|
Erickson BH, Van Wie BJ, Leatzow DM, Liu G, Thayer PC, Tiffany TO. Charge Coupled Device Optics System for Simultaneous Measurement of Multiple Reactions in a Microplate. Clin Chem 1998. [DOI: 10.1093/clinchem/44.9.2046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Brian H Erickson
- Department of Chemical Engineering, Washington State University, Pullman, WA 99164-2710
| | - Bernard J Van Wie
- Department of Chemical Engineering, Washington State University, Pullman, WA 99164-2710
| | - Dan M Leatzow
- Department of Chemical Engineering, Washington State University, Pullman, WA 99164-2710
| | - Guihua Liu
- Department of Chemical Engineering, Washington State University, Pullman, WA 99164-2710
| | | | | |
Collapse
|
16
|
Lin L, Zhang J, Wang P, Wang Y, Chen J. Thin-layer chromatography of mycotoxins and comparison with other chromatographic methods. J Chromatogr A 1998; 815:3-20. [PMID: 9718702 DOI: 10.1016/s0021-9673(98)00204-0] [Citation(s) in RCA: 100] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This paper highlights the status of thin-layer chromatography (TLC) of mycotoxins in various sample matrices. The outstanding merits of TLC in the field of the qualitative and quantitative determination of mycotoxins have been briefed. A comparison between different TLC methods and TLC with HPLC, enzyme-linked immunosorbent assay and GC methods, etc. is made, in general.
Collapse
Affiliation(s)
- L Lin
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, China
| | | | | | | | | |
Collapse
|
17
|
Shultz LL, Shippy S, Nieman TA, Sweedler JV. Peroxyoxalate chemiluminescence detection for capillary electrophoresis using membrane collection. ACTA ACUST UNITED AC 1998. [DOI: 10.1002/(sici)1520-667x(1998)10:4<329::aid-mcs3>3.0.co;2-i] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|