食品科学 ›› 2009, Vol. 30 ›› Issue (19 ): 74-77.doi: 10.7506/spkx1002-6630-200919014

• 基础研究 • 上一篇    下一篇

辐照对冷却鸡肉中致病微生物的杀灭及贮藏特性的影响

哈益明1,居 华1,2,王 锋1,李彦杰1,李 安1   

  1. 1.中国农业科学院农产品加工研究所 2.四川农业大学食品学院
  • 收稿日期:2009-07-02 出版日期:2009-10-01 发布日期:2010-12-29
  • 通讯作者: 哈益明1 E-mail:hayiming@sina.com
  • 基金资助:

    农业部农业公益性行业科研专项经费项目(200803034)

Effects of Irradiation on Pathogenic Bacterial Inactivation in Refrigerated Chicken and Its Storage

HA Yi-ming1,JU Hua1,2,WANG Feng1,LI Yan-jie1,LI An1   

  1. (1. Institutute of Agro-food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    2. College of Food Science, Sichuan Agricultural University, Ya'an 625014, China)
  • Received:2009-07-02 Online:2009-10-01 Published:2010-12-29
  • Contact: HA Yi-ming1, E-mail:hayiming@sina.com

摘要:

研究冷却鸡肉经60Co γ射线辐照后的菌落总数、大肠杆菌(10003)和空肠弯曲杆菌(33560、CY04)的杀灭效应(D10 值)及菌落总数和大肠杆菌在贮藏期的变化。结果表明,经60Co γ射线辐照后冷却鸡肉中的菌落总数、大肠杆菌(10003)、空肠弯曲杆菌(33560、CY04)的D10 值分别为1.434、0.408、0.175、0.2kGy。真空包装的冷却鸡肉在0~4℃贮藏条件下,3kGy 剂量辐照贮藏21d、5kGy 剂量辐照贮藏28d 后菌落总数为5.66、4.90lg(CFU/g),符合禽肉产品的卫生要求。

关键词: 冷却鸡肉, 致病菌, D 1 0 值, 贮藏期, 辐照

Abstract:

Growth characteristics of pathogenic bacteria in refrigerated chicken with 60Co γ irradiation of different doses during storage were investigated to develop a pathogenic bacteria inactivation method using 60Co γ irradiation for refrigerated chicken storage. Pathogenic bacteria inactivation efficiency irradiated by 60Co γ in refrigerated chicken was evaluated through survival rate, which is the irradiation dose to keep 10% microorganism alive (D10). The D10s of total number of bacterial colony, E. coli 10003, and two strains of Campylobacter jejuni named 33560 and CY04 in refrigerated chicken after 60Co γ irradiation were 1.434, 0.408, 0.175 and 0.2 kGy, respectively. The total numbers of bacterial colony in vacuum packaged chicken samples after 3 and 5 kGy irradiation and following storage at 0-4 ℃ for 21 and 28 d were measured to be 5.66 and 4.90 lg (CFU/g), respectively, which meet the hygienic standard of poultry products.

Key words: refrigerated chicken, pathogenic bacteria, D10, storage, irradiation

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