冷等离子体降解葡萄干中赭曲霉毒素A模型  

Model for degrading ochratoxin A in raisins using cold plasma

作　　者：张文乐 张绍君 黄渭元 王英 ZHANG Wenle;ZHANG Shaojun;HUANG Weiyuan;WANG Ying(College of Food Science and Pharmacy,Xinjiang Agricultural University,Urumqi Xinjiang 830052,China;College of Mechanical and Electronic Engineering,Northwest A&F University,Yangling Shaanxi 712100,China;College of Mechanical Engineering,Shaanxi Polytechnic Institute,Xianyang Shaanxi 712000,China)

机构地区：[1]新疆农业大学食品科学与药学学院,新疆乌鲁木齐830052 [2]西北农林科技大学机械与电子工程学院,陕西杨凌712100 [3]陕西工业职业技术学院机械工程学院,陕西咸阳712000

出　　处：《农业工程》2024年第12期104-109,共6页AGRICULTURAL ENGINEERING

基　　金：国家自然科学基金项目(32060574)。

摘　　要：冷等离子体是降解农产品中真菌毒素的有效方法,但毒素的降解过程受冷等离子体工艺参数影响。为准确预测葡萄干中赭曲霉毒素A降解过程,利用有限元软件COMSOL建立计算模型。该模型考虑了冷等离子体的工艺参数,包括放电频率、反应器尺寸和食品基质形状,可预测葡萄干中赭曲霉毒素A降解过程。结果表明,模型和试验结果具有较高的一致性。随着放电频率的增大,赭曲霉毒素A的降解半衰期明显缩短,放电频率从0.6 kHz增加至1.2 kHz时,半衰期缩短至原始时间的57%。葡萄干形状和反应器尺寸对降解效果的影响不显著。该模型是优化冷等离子体处理条件的一种可靠工具,可为冷等离子体降解农产品中真菌毒素的工业化应用提供理论依据。Cold plasma is an effective method for degrading fungal toxins in agricultural products,but degradation process is influenced by parameters of cold plasma process.To accurately predict degradation process of ochratoxin A in raisins,a computational model was developed using finite element software COMSOL.This model considered process parameters of plasma,including discharge frequency,size of reaction chamber,and shape of food matrix,to predict degradation process of ochratoxin A in raisins.Results showed that model and experimental outcomes were highly consistent.As discharge frequency increases,half-life of ochratoxin A degradation significantly decreased.When discharge frequency increased from 0.6 to 1.2 kHz,half-life was reduced to 57%of original duration.Raisins shape and reactor size had a minor impact on degradation process.Results confirmed that this model was a reliable tool for optimizing conditions of cold plasma treatment,providing a theoretical basis for industrial application of plasma degradation of fungal toxins in agricultural products.

关 键 词：冷等离子体 赭曲霉毒素A 葡萄干 降解模型 

分 类 号：S126[农业科学—农业基础科学]