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Li S, Zhang S, Li X, Zhou S, Ma J, Zhao X, Zhang Q, Yin X. Determination of multi-mycotoxins in vegetable oil via liquid chromatography-high resolution mass spectrometry assisted by a complementary liquid-liquid extraction. Food Chem X 2023; 20:100887. [PMID: 38144739 PMCID: PMC10740109 DOI: 10.1016/j.fochx.2023.100887] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/15/2023] [Accepted: 09/16/2023] [Indexed: 12/26/2023] Open
Abstract
The simultaneous determination of multi-mycotoxins in food commodities are highly desirable due to their potential toxic effects and mass consumption of foods. Herein, liquid chromatography-quadrupole exactive orbitrap mass spectrometry was proposed to analyze multi-mycotoxins in commercial vegetable oils. Specifically, the method featured a successive liquid-liquid extraction process, in which the complementary solvents consisted of acetonitrile and water were optimized. Resultantly, matrix effects were reduced greatly. External calibration approach revealed good quantification property for each analyte. Under optimal conditions, the recovery ranging from 80.8% to 109.7%, relative standard deviation less than 11.7%, and good limit of quantification (0.35 to 45.4 ng/g) were achieved. The high accuracy of proposed method was also validated. The detection of 20 commercial vegetable oils revealed that aflatoxins B1 and B2, zearalenone were observed in 10 real samples. The as-developed method is simple and low-cost, which merits the wide applications for scanning mycotoxins in oil matrices.
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Affiliation(s)
- Shuangqing Li
- Food Safety Analysis Laboratory, Division of Chemical Metrology and Analytical Science, Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, National Institute of Metrology, Beijing 100029, PR China
| | - Siyao Zhang
- Food Safety Analysis Laboratory, Division of Chemical Metrology and Analytical Science, Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, National Institute of Metrology, Beijing 100029, PR China
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Xiaomin Li
- Food Safety Analysis Laboratory, Division of Chemical Metrology and Analytical Science, Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, National Institute of Metrology, Beijing 100029, PR China
| | - Shukun Zhou
- Food Safety Analysis Laboratory, Division of Chemical Metrology and Analytical Science, Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, National Institute of Metrology, Beijing 100029, PR China
| | - Jiahui Ma
- College of Chemistry, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Xiaotong Zhao
- College of Chemistry, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Qinghe Zhang
- Food Safety Analysis Laboratory, Division of Chemical Metrology and Analytical Science, Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, National Institute of Metrology, Beijing 100029, PR China
| | - Xiong Yin
- College of Chemistry, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
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Zamolo F, Wüst M. 3-Alkyl-2-Methoxypyrazines: Overview of Their Occurrence, Biosynthesis and Distribution in Edible Plants. Chembiochem 2023; 24:e202300362. [PMID: 37435783 DOI: 10.1002/cbic.202300362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/26/2023] [Accepted: 07/11/2023] [Indexed: 07/13/2023]
Abstract
Pyrazines are ubiquitous in nature - biosynthesized by microorganisms, insects, and plants. Due to their great structural diversity, they own manifold biological functions. Alkyl- and alkoxypyrazines for instance play a key role as semiochemicals, but also as important aroma compounds in foods. Especially 3-alkyl-2-methoxypyrazines (MPs) have been of great research interest. MPs are associated with green and earthy attributes. They are responsible for the distinctive aroma properties of numerous vegetables. Moreover, they have a strong influence on the aroma of wines, in which they are primarily grape-derived. Over the years various methods have been developed and implemented to analyse the distribution of MPs in plants. In addition, the biosynthetic pathway of MPs has always been of particular interest. Different pathways and precursors have been proposed and controversially discussed in the literature. While the identification of genes encoding O-methyltransferases gave important insights into the last step of MP-biosynthesis, earlier biosynthetic steps and precursors remained unknown. It was not until 2022 that in vivo feeding experiments with stable isotope labeled compounds revealed l-leucine and l-serine as important precursors for IBMP. This discovery gave evidence for a metabolic interface between the MP-biosynthesis and photorespiration.
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Affiliation(s)
- Francesca Zamolo
- University of Bonn, Institute of Nutritional and Food Sciences Chair of Food Chemistry, Friedrich-Hirzebruch-Allee 7, 53115, Bonn, Germany
| | - Matthias Wüst
- University of Bonn, Institute of Nutritional and Food Sciences Chair of Food Chemistry, Friedrich-Hirzebruch-Allee 7, 53115, Bonn, Germany
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