毕业论文模板 涂膜抑制花生仁贮藏过程中黄曲霉毒素含量的研究.docVIP

本科毕业论文 BACHELOR DISSERTATION 论文题目：____________________________________________________ 学位类别：____________________________________________________ 学科专业：____________________________________________________ 作者姓名：____________________________________________________ 导师姓名：____________________________________________________ 完成时间：____________________________________________________ 涂膜抑制花生仁贮藏过程中黄曲霉毒素含量的研究 中 文 摘 要 花生在贮藏中存在黄曲霉毒素超标问题，严重影响我国花生的出口。为此，安徽省科技厅在2005年的科技攻关项目中，设立名称为《万吨级仁果类休闲食品原料多元复合保鲜贮藏技术及产业化》的项目，解决贮藏中黄曲霉毒素超标的问题。 本实验以安徽产花生的花生仁为研究对象，通过研究涂膜材料及种类、成膜条件、柠檬醛添加量、贮藏温度和包装等因素对贮藏中黄曲霉毒素的影响，对各因素水平进行优化组合，开发了多元复合保鲜贮藏技术从而延长了花生的保藏期，并进行中试实验，同时研究了LC-MS检测黄曲霉毒素含量的新方法，取得如下研究成果： 1.壳聚糖涂膜可以有效抑制花生仁在贮藏过程中黄曲霉毒素含量的增加，且对其他营养物质无显著影响。壳聚糖的浓度、制膜液的pH值和溶解温度对膜的特性有影响。包装条件对黄曲霉毒素含量影响不大，贮藏温度对黄曲霉毒素含量影响显著。 2.在涂膜材料中加入柠檬醛后，抑制黄曲霉毒素的效果更佳。 3.根据实验结果，结合生产实际，得出最佳的条件为：cps150的壳聚糖+1.5%制膜液浓度+0.025%柠檬醛添加量+15℃贮藏温度。 4.中试实验表明，在选定的最佳条件下，花生贮藏180天，黄曲霉毒素B1及总量均低于欧盟制定的标准，可以满足出口条件。 关键词：花生；黄曲霉毒素；壳聚糖；涂膜；柠檬醛 Study on Inhibiting Aflatoxins of Coating to Peanuts ABSTRACT During peanuts storage, study on inhibiting aflatoxins of coating to peanuts by analyzing contents of aflatoxins. The results shows aflatoxins can be suppression by the processing of coating. So that coating would postphone its storage time. Chitosan coating was adopted on peanuts.The results showed that Chitosan coating and storage temperature did influence notability on suppression aflatoxins during peanuts storage, package did not influence notability on suppression aflatoxins during peanuts storage. Chitosan coating can suppression aflatoxins if peanuts storaged in 10℃,vacuum shutoff light package. Besides Chitosan coating was adopted on peanut,coating which integrated citral was adopted.The results showed that the effect of inhibition aflatoxins in peanut can be increased by appropriate citral. Chitosan with 0.025﹪ ci10℃,vacuum shutoff light package. During the storage of 180d, the contents of aflatoxins can be controlled lower than the standard of Europ