Immunochemical approaches for detection of aflatoxin B1 in herbal medicines

Raysyan, A.; Eremin, S.A.; Beloglazova, N.V.; De Saeger, S.; Gravel, I.V.

Авторы: Raysyan Anna, Eremin Sergei A., Beloglazova Natalia V., De Saeger Sarah, Gravel Irina V.
Журнал: Phytochemical Analysis
Том: 31
Номер: 5
Год издания: 2020
Издательство: John Wiley & Sons Inc.
Местоположение издательства: United States
Первая страница: 662
Последняя страница: 669
DOI: 10.1002/pca.2931
Аннотация: Two different techniques for AFB1 detection in medical herb were developed and compared. Enzymatic label, namely an easy?to?use semi?quantitative flow–through membrane?based enzyme immunoassay (MBA) and a homogeneous method which needs no separation or washing steps a quantitative fluorescence polarization immunoassay (FPIA). Aflatoxin B1 (AFB1) is a toxic low‐molecular‐weight secondary metabolite of Aspergillus flavus and A. parasiticus. AFB1 was classified as a Group I carcinogen by the World Health Organisation for Research on Cancer in 1993. AFB1 is an unavoidable natural contaminant of some herbal medicine, able to cause serious health issues for humans consuming the related medicine.Therefore, this study aimed to develop an efficient fluorescence polarisation immunoassay (FPIA) and a rapid, low‐cost, and easy‐to‐use membrane‐based flow‐through immunoassay (MBA) for determination of AFB1 in herbal medicine Origanum vulgare L., Rubus idaeus L., Urtica dioica L. and Sorbus aucuparia L. A cut‐off level of the developed MBA was 0.8 ppb. Validation of the developed test was performed with blank and spiked samples. Using three naturally contaminated or three artificially spiked samples. The FPIA showed a linear working range of 8.6 to 64 ppb, and a half maximal inhibitory concentration (IC50) of 24 ppb. The results were in good correlation with the enzymelinked immunosorbent assay (ELISA) results (the IC50 0.1 ppb). Both the sample preparation and analysis are simple, cost‐effective and easy to perform on‐site in non‐laboratory environments. Liquid chromatography with tandem mass spectrometry (LC‐MS/MS) was used as a confirmatory technique.
Добавил в систему: Еремин Сергей Александрович

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