• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Food microbiology >Effects of packaging type and storage temperature on the growth of foodborne pathogens on shredded 'Romaine' lettuce
【24h】

Effects of packaging type and storage temperature on the growth of foodborne pathogens on shredded 'Romaine' lettuce

机译：包装类型和储存温度对切碎的“长叶莴苣”生菜中食源性病原菌生长的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Fresh produce can be a vehicle for the transmission of pathogens capable of causing human illnesses and some of them can grow on fresh-cut vegetables. The survival and growth of Escherichia coli O157:H7, Salmonella spp. and Listeria monocytogenes inoculated onto shredded lettuce was determined under modified atmosphere packaging conditions, at various storage temperatures. We also monitored changes in pH and gas atmospheres within the packages and the growth of psychrotrophic and mesophilic microorganisms. After pathogen inoculation, shredded lettuce was packaged in films of different permeability and stored at 5 and 25 ℃. After 10 days at 5 ℃ populations of E. coli O157:H7 and Salmonella decreased approximately 1.00 log unit while L monocytogenes increased about 1.00 log unit, in all package films. Moreover, the pathogens level increased between 2.44 and 4.19 log units after 3 days at 25 ℃. Psychrotrophic and mesophilic bacteria had similar growth at both temperatures with higher populations in air than in the other atmospheres. The composition of the storage atmosphere within the packaging of lettuce had no significant effect on the survival and growth of the pathogens used in this study at refrigeration temperatures. The results obtained can be considered as a warning indicator, which reinforces the necessity for corrective measures to avoid contamination of vegetables.
机译：新鲜农产品可以成为传播能够引起人类疾病的病原体的媒介，其中一些可以在鲜切蔬菜上生长。大肠杆菌O157：H7，沙门氏菌的存活和生长。在改变的大气包装条件下，在不同的储存温度下，测定了切碎的莴苣上接种的单核细胞增生李斯特菌。我们还监测了包装内pH值和气体气氛的变化以及精神营养性和嗜温性微生物的生长。接种病原菌后，将切好的生菜包装在不同渗透性的薄膜中，并分别在5和25℃下保存。在所有包装薄膜中，在5℃下放置10天后，大肠杆菌O157：H7和沙门氏菌的种群减少了约1.00 log单位，而单核细胞增生李斯特菌的种群增加了约1.00 log单位。此外，在25℃3天后，病原体水平在2.44和4.19 log单位之间增加。在两种温度下，精神营养菌和嗜温细菌的生长情况相似，空气中的种群数量高于其他大气。生菜包装中储存气氛的组成对本研究在冷藏温度下使用的病原体的存活和生长没有显着影响。所获得的结果可被视为警告指标，这加强了采取纠正措施以避免蔬菜污染的必要性。

著录项

  • 来源
    《Food microbiology》 |2010年第3期|p.375-380|共6页
  • 作者

    M. Oliveira; J. Usall; C. Solsona; I. Alegre; I. Vinas; M. Abadias;

  • 作者单位

    University of Lleida, Food Technology Department, UDL-IRTA Centre, XaRTA-Postharvest, Rovira Rome 191, 25198-Lleida, Spain;

    IRTA, UdL-IRTA Centre, XaRTA-Postharvest, Rovira Rome 191, 25198-Lleida, Spain;

    IRTA, UdL-IRTA Centre, XaRTA-Postharvest, Rovira Rome 191, 25198-Lleida, Spain;

    University of Lleida, Food Technology Department, UDL-IRTA Centre, XaRTA-Postharvest, Rovira Rome 191, 25198-Lleida, Spain;

    University of Lleida, Food Technology Department, UDL-IRTA Centre, XaRTA-Postharvest, Rovira Rome 191, 25198-Lleida, Spain;

    IRTA, UdL-IRTA Centre, XaRTA-Postharvest, Rovira Rome 191, 25198-Lleida, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    salmonella; escherichia coli O157:H7; listeria monocytogenes; fresh-cut vegetables; modified atmosphere packaging;

    机译：沙门氏菌;大肠杆菌O157：H7;李斯特菌;鲜切蔬菜;气调包装;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号