案板材质对单增李斯特菌在生熟食品间交叉污染的影响
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国家自然科学基金项目(31271896)、上海市科委长三角科技联合攻关领域项目(15395810900)、上海市科委重点支撑项目(13430502400)、农业部农产品质量安全风险评估实验室(杭州)开放课题项目(2015FXPG01)和上海市研究生创新基金项目(10-14-308-101)


Effect of Different Material Cutting Boards on Cross-contamination of Listeria monocytogenes from Raw to Cooked Food
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    摘要:

    为定量分析生熟食品中单增李斯特菌在不同材质案板上的交叉污染水平,将1mL单增李斯特菌初始菌悬液接种于卤猪舌中,模拟食品制备过程,在案板上先后对卤猪舌和生黄瓜进行切片处理,同时,设定4种常见场景,分别测定不同场景下单增李斯特菌从卤猪舌到案板以及案板到生黄瓜的转移率。此外,构建厨房模拟环境下食物经不同操作方式的暴露评估模型,比较消费者食用不同材质案板处理过的污染单增李斯特菌的生熟食品后发病率的大小。结果表明:不同场景下转移率在一定范围内变化,且不同材质案板同场景下转移率差异显著(P<0.05)。通过暴露模型证实,食用交叉污染的熟肉制品和生鲜蔬菜存在一定风险,且木质案板风险显著高于塑料和不锈钢案板。

    Abstract:

    The objective of this work was to quantify the crosscontamination of Listeria monocytogenes from raw to cooked food through different material cutting boards. Transferring experiments were performed to mimic the food preparation process. The marinated pig tongue sample was inoculated with 1mL initial bacterial suspension then put there about 15min before splitting. The cucumber was split on the cutting board at the same position of tongue. Meanwhile, transfer rates from marinated pig tongue to cutting boards and cutting boards to cucumber under various common four scenarios were also determined. Building exposure assessment model of food in different operating modes in the kitchen simulation environment and comparing incidence rate after consumers eating contaminated food dealing with different cutting boards. The results showed that each set of transfer rates proved to be changing in a certain range, and transfer rates of different material cutting boards under the same scenarios varied significantly over experiments (P<0.05). The exposure assessment model of foodborne pathogens from meats to readytoeat vegetables showed the crosscontamination with some potential risks to consumers. And the risk of wood cutting board was higher significantly than that of the other two kinds of material cutting boards.

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董庆利,陆冉冉,汪雯,刘阳泰,宋筱瑜,刘箐.案板材质对单增李斯特菌在生熟食品间交叉污染的影响[J].农业机械学报,2016,47(3):207-213. Dong Qingli, Lu Ranran, Wang Wen, Liu Yangtai, Song Xiaoyu, Liu Qing. Effect of Different Material Cutting Boards on Cross-contamination of Listeria monocytogenes from Raw to Cooked Food[J]. Transactions of the Chinese Society for Agricultural Machinery,2016,47(3):207-213.

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  • 收稿日期:2015-08-17
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  • 在线发布日期: 2016-03-10
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