College of Food and Health, Zhejiang Agriculture & Forestry University, No. 666 Wusu Street, Hangzhou 311300, China.
State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
Food Chem. 2023 Feb 15;402:134159. doi: 10.1016/j.foodchem.2022.134159. Epub 2022 Sep 8.
Few reports are on the application of cold plasma (CP) for mold and mycotoxin control in grain. The aim of this study was to evaluate the viability of CP for mycotoxin and mold control in rice grain. Rice grains artificially contaminated with molds or mycotoxins were subjected to CP treatment. The microbial activities of Aspergillus niger, Rhizopus oryzae, Penicillium verrucosum and Fusarium graminearum were significantly inhibited by CP treatment. The maximal reduction of DON and OTA were 61.25 % and 55.64 %, respectively. The electrical conductivity and malondialdehyde content in rice grain increased at most by 30.14 % and 103.27 %, respectively. The seed germination reduced significantly when treatment time reached 8 min. The major nutrients of rice grain were not affected except for prolamine, which was generally consistent with the results of electron microscopy and Fourier-transform infrared analysis. Cold plasma is a promising method for mold and mycotoxin control in rice grain.
关于冷等离子体（CP）在谷物中用于霉菌和霉菌毒素控制的应用，鲜有报道。本研究旨在评估 CP 对稻谷中霉菌毒素和霉菌控制的可行性。人工污染霉菌或霉菌毒素的稻谷经 CP 处理。CP 处理显著抑制了黑曲霉、米根霉、疣孢青霉和禾谷镰刀菌的微生物活性。DON 和 OTA 的最大去除率分别为 61.25%和 55.64%。稻谷的电导率和丙二醛含量最高分别增加了 30.14%和 103.27%。当处理时间达到 8 分钟时，种子发芽率显著降低。除了醇溶蛋白外，稻谷的主要营养成分没有受到影响，而醇溶蛋白的情况与电子显微镜和傅里叶变换红外分析的结果基本一致。冷等离子体是一种有前途的控制稻谷中霉菌和霉菌毒素的方法。
