College of Food Science, Southwest University, Chongqing 400715, PR China.
College of Food Science, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, PR China.
Food Res Int. 2022 Oct;160:111721. doi: 10.1016/j.foodres.2022.111721. Epub 2022 Jul 21.
The productions of food, agricultural products and feed involve a variety processing conditions, which can affect the release/binding of zearalenone (ZEN) with macro-components in maize, resulting in the interconversion of hidden ZEN with free ZEN. This interconversion can cause the uncertainties and individual differences in the exposure assessment. To fully overcome this uncertainties of the potential risks for humans and animals, further research regarding the key factors and rule of interconversion is needed. This study was designed to analyze the key factors that can induce the interconversion of hidden ZEN with free ZEN during maize processing. Results showed the conversion of hidden ZEN into free ZEN during thermal and alkaline processing, while it showed the conversion of free ZEN into hidden ZEN during acid processing. Furthermore, the temperature and pH-induced interconversion rules were also applicable to the practical maize processing (tortilla production). During producing tortilla, when the processing conditions of 4% lime, cooking time (60 min) and cooking temperature (100 °C) were set, the tortilla products with the lower hidden ZEN hazard could be obtained. This study presented new insights into the risk assessment of maize products as the conversion between hidden ZEN and free ZEN during processing.
食品、农产品和饲料的生产涉及多种加工条件，这些条件会影响玉米中玉米赤霉烯酮（ZEN）与宏量成分的释放/结合，导致隐藏 ZEN 与游离 ZEN 之间的相互转化。这种相互转化可能导致暴露评估的不确定性和个体差异。为了充分克服人类和动物潜在风险的这些不确定性，需要进一步研究相互转化的关键因素和规律。本研究旨在分析玉米加工过程中诱导隐藏 ZEN 与游离 ZEN 相互转化的关键因素。结果表明，在热碱性加工过程中隐藏 ZEN 转化为游离 ZEN，而在酸性加工过程中则相反，游离 ZEN 转化为隐藏 ZEN。此外，温度和 pH 值诱导的相互转化规律也适用于实际的玉米加工（玉米饼制作）。在制作玉米饼时，当设定 4%石灰、烹饪时间（60 分钟）和烹饪温度（100°C）等加工条件时，可以获得隐藏 ZEN 危害较低的玉米饼产品。本研究为玉米制品风险评估提供了新的见解，因为在加工过程中隐藏 ZEN 和游离 ZEN 之间会发生转化。
