食品科学 ›› 2019, Vol. 40 ›› Issue (1): 85-91.doi: 10.7506/spkx1002-6630-20170630-454

• 基础研究 • 上一篇    下一篇

3种流通模式下生猪肉中单增李斯特菌的暴露评估

刘阳泰,孙菀霞,刘宝林*,董庆利*   

  1. 上海理工大学医疗器械与食品学院,上海 200093
  • 出版日期:2019-01-15 发布日期:2019-01-22
  • 基金资助:
    “十三五”国家重点研发计划重点专项(2018YFC1602500;2018YFC1602900)

Quantitative Exposure Assessment of Listeria monocytogenes in Raw Pork under Three Transportation Modes

LIU Yangtai, SUN Wanxia, LIU Baolin*, DONG Qingli*   

  1. School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • Online:2019-01-15 Published:2019-01-22

摘要: 本研究通过对3 种生猪肉流通模式进行简化,根据生猪肉中单增李斯特菌初始污染水平抽检数据及调研环境参数,评估对比了3 种流通模式下单增李斯特菌在生猪肉中的最终暴露量。结果显示:基于全程非冷链的热鲜猪肉最终阳性检出率约为42.12%,超过风险阈值概率约为21.05%;基于部分冷链的冷鲜猪肉最终阳性检出率约为12.07%,超过风险阈值概率约为1.61%;基于全程冷链的冷鲜猪肉最终阳性检出率约为6.50%,超过风险阈值概率约为0%。相关性分析表明,初始污染水平与最终暴露量Pearson相关系数均为0.70以上,影响最大。因此,冷鲜猪肉较热鲜猪肉更有利于避免食源性疾病的发生,基于全程冷链的冷鲜猪肉应被积极推广。同时在生猪肉供应链中,更应注重源头控制,严格设置并控制各流通环节的环境条件。

关键词: 冷藏链, 生猪肉, 食源性致病菌, 暴露评估

Abstract: The exposure of Listeria monocytogenes in raw pork under three different simplified transportation modes was quantitatively assessed according to the initial contamination levels and environmental settings. The prevalence of L. monocytogenes after non-cold chain, partial cold chain and whole cold chain transportation was 42.12%, 12.07% and 6.50%, respectively, and the probability of exceeding the risk threshold was 21.05%, 1.61% and 0%, respectively. The initial contamination was found to be crucial to the final contamination with correlation coefficient over 0.70 for all chains. Hence, chilled pork was advantageous over fresh pork in avoiding foodborne diseases, especially for that transported in the whole cold chain. Microbial source control and environmental settings were vital for the raw pork supply chains.

Key words: cold chain, raw pork, foodborne pathogen, exposure assessment

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