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TOPICAL COLLECTIONS

Methods in Mycotoxin Detection and Analysis
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Sefater Gbashi

Sefater Gbashi

University of Johannesburg

Dr. Sefater Gbashi is a lecturer (temporary) and postdoctoral research fellow in the Department of Biotechnology and Food Technology at the University of Johannesburg. He is a Y-2 Rated Researcher by the National Research Foundation of South Africa. Dr. Gbashi has published over 50 articles (i.e., research papers, review articles, and book chapters) in reputable journals, and has over 900 citations on Google Scholar, with a h-index of 16. His research interests include (1) Impact, surveillance, and monitoring of mycotoxin contamination patterns in agricultural commodities in Africa, (2) development and validation of an environmentally friendly analytical method for analysis of mycotoxins, (3) the decontamination of mycotoxins in food and feed commodities, (4) metabolite fingerprinting and profiling in plant materials using mass spectrometry-based methodologies, and (5) machine learning/artificial intelligence, data analytics, optimization, and modeling. Dr. Gbashi also has skills in the operation of various high-end chromatographic and mass spectrometric equipment including liquid chromatography-tandem mass spectrometry (LC-MS/MS), high-performance liquid chromatography photodiode array/fluorescence detectors (HPLC-PDA/FL), and gas chromatography high resolution time-of-flight mass spectrometry (GC-HRTOF-MS), as well as interpretating high dimensional mass spectrometric data.

Collection Overview

Mycotoxin contamination of agricultural commodities remains a global concern due to the harm it can cause to human and animal health. These potent food and feed contaminants are low-molecular-weight secondary metabolites derived from fungi, including Aspergillus, Penicillium, Claviceps, and Fusarium. Mycotoxins are arguably the most significant non-synthetic toxins, with aflatoxin B1 (AFB1) being the most potent naturally occurring carcinogen known to man. In addition to health issues, mycotoxins have significant socioeconomic effects on societies worldwide, especially in developing countries.

To address their prevalence and associated harmful effects, there are stringent regulations on permissible limits of mycotoxins in various food and feed products. As a result, routine surveillance of these agricultural commodities is necessary, particularly in light of the globalization of the food supply chain and the continued emergence of new fungal toxins. This makes analysis a critical component of mycotoxin control and management, and therefore, there is a perpetual quest for more efficient, environmentally friendly, robust, and sensitive analytical methods.

This Methods Collection offers practical demonstrations of standardized mycotoxin analytical protocols, both qualitative and quantitative, including sample preparation, spectroscopic detection methods, chromatographic and mass spectrometric techniques, quantum dots, immune assays, and lateral flow methods.

Articles

Non-destructive SPE-UPLC-based Quantification of Aflatoxins and Stilbenoid Phytoalexins in Single Peanut (<i>Arachis</i> spp.) Seeds
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Non-destructive SPE-UPLC-based Quantification of Aflatoxins and Stilbenoid Phytoalexins in Single Peanut (Arachis spp.) Seeds

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2024

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