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首页> 外文期刊>Food microbiology >Inactivation of avirulent Yersinia pestis on food and food contact surfaces by ultraviolet light and freezing
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Inactivation of avirulent Yersinia pestis on food and food contact surfaces by ultraviolet light and freezing

机译：通过紫外线和冷冻灭活食品和食品接触表面上无毒的耶尔森氏菌

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摘要

Yersinia pestis, the causative agent of plague, can occasionally be contracted as a naso-pharyngeal or gastrointestinal illness through consumption of contaminated meat. In this study, the use of 254 nm ultraviolet light (UV-C) to inactivate a multi-isolate cocktail of avirulent Y. pestis on food and food contact surfaces was investigated. When a commercial UV-C conveyor was used (5 mW/cm~2/s) 0.5 J/cm~2 inactivated ＞7 log of the Y. pestis cocktail on agar plates. At 0.5 J/cm~2, UV-C inactivated ca. 4 log of Y. pestis in beef, chicken, and catfish, exudates inoculated onto high density polypropylene or polyethylene, and stainless steel coupons, and ＞6 log was eliminated at 1 J/cm~2. Approximately 1 log was inactivated on chicken breast, beef steak, and catfish fillet surfaces at a UV-C dose of 1 J/cm~2. UV-C treatment prior to freezing of the foods did not increase the inactivation of Y. pestis over freezing alone. These results indicate that routine use of UV-C during food processing would provide workers and consumers some protection against Y. pestis.
机译：鼠疫耶尔森氏菌是鼠疫的病原体，通过食用受污染的肉类，有时会感染鼻咽或胃肠道疾病。在这项研究中，研究了使用254 nm紫外线（UV-C）灭活食品和食品接触表面上无毒的鼠疫杆菌的多重隔离混合物。当使用商用UV-C输送机（5 mW / cm〜2 / s）时，琼脂平板上0.5 J / cm〜2的鼠疫耶尔森氏菌失活率＞ 7 log。在0.5 J / cm〜2下，UV-C灭活。牛肉，鸡肉和cat鱼中的鼠疫耶尔森菌为4 log，渗出液接种在高密度聚丙烯或聚乙烯和不锈钢试样上，在1 J / cm〜2时，＞ 6 log被消除。在1 J / cm〜2的UV-C剂量下，鸡胸肉，牛排和cat鱼鱼片的表面失活了约1 log。与单独冷冻相比，在冷冻食品之前进行UV-C处理不会增加鼠疫耶尔森氏菌的灭活作用。这些结果表明，在食品加工过程中常规使用UV-C将为工人和消费者提供对抗鼠疫耶尔森氏菌的保护。

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  • 来源
    《Food microbiology》 |2015年第9期|1-4|共4页
  • 作者

    Christopher H. Sommers; Shiowshuh Sheen;

  • 作者单位

    U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA,Food Safety and Intervention Technologies Research Unit, Eastern Regional Research Center, USDA-ARS, 600 East Mermaid Lane, Wydnmoor, PA 19038, USA;

    U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA;

  • 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

    Yersinia pestis; Ultraviolet; Food; Food contact surfaces; Beef; Chicken; Catfish;

    机译：鼠疫耶尔森菌;紫外线;餐饮;食物接触面;牛肉;鸡;鲶鱼;

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