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Survey of raw milk cheeses for microbiological quality and prevalence of foodborne pathogens

机译:生乳奶酪的微生物质量和食源性病原菌患病率调查

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摘要

Cheese may be manufactured in the United States using raw milk, provided the cheese is aged for at least 60 days at temperatures not less than 35℉ (1.7℃). There is now increased concern among regulators regarding the safety of raw milk cheese due to the potential ability of foodborne pathogens to survive the manufacturing and aging processes. In this study, 41 raw milk cheeses were obtained from retail specialty shops, farmers' markets, and on-line sources. The cheeses were then analyzed for the presence of Listeria monocytogenes, Salmonella, Escherichia coli O157:H7, Staphylococcus aureus, and Campylobacter. Aerobic plate counts (APC), coliform and yeast/mold counts were also performed. The results revealed that none of the enteric pathogens were detected in any of the samples tested. Five samples contained coliforms; two of those contained E. coli at less than 102 cfu/g. Three other cheese samples contained S. aureus. The APC and yeast-mold counts were within expected ranges. Based on the results obtained from these 41 raw milk cheeses, the 60-day aging rule for unpasteurized milk cheeses appears adequate for producing microbiologically safe products.
机译:奶酪可以在美国使用生奶制造,但前提是奶酪必须在不低于35℉(1.7℃)的温度下老化至少60天。由于食源性病原体在生产和老化过程中生存的潜在能力,现在监管机构对生乳奶酪的安全性越来越关注。在这项研究中,从零售专卖店,农贸市场和在线来源获得了41种生乳奶酪。然后分析奶酪中是否存在李斯特菌,沙门氏菌,大肠杆菌O157:H7,金黄色葡萄球菌和弯曲杆菌。还进行了有氧平板计数(APC),大肠菌群和酵母/霉菌计数。结果表明,在任何测试样品中均未检测到肠道病原体。五份样品中含有大肠菌。其中两个中的大肠杆菌含量低于102 cfu / g。其他三个奶酪样品中含有金黄色葡萄球菌。 APC和酵母菌计数在预期范围内。根据从这41种原料奶干酪中获得的结果,未经巴氏消毒的奶干酪60天的老化规则似乎足以生产微生物安全的产品。

著录项

  • 来源
    《Food microbiology》 |2012年第2期|p.154-158|共5页
  • 作者单位

    Department of Food Science and Technology, University of Nebraska-Lincoln, 338 Food Industry Complex, Lincoln, NE 68583-0919, USA;

    Department of Food Science and Technology, University of Nebraska-Lincoln, 338 Food Industry Complex, Lincoln, NE 68583-0919, USA;

    Department of Food Science and Technology, University of Nebraska-Lincoln, 338 Food Industry Complex, Lincoln, NE 68583-0919, USA,The Food Processing Center, University of Nebraska-Lincoln, Lincoln, NE 68583-0919, USA;

    Department of Food Science and Technology, University of Nebraska-Lincoln, 338 Food Industry Complex, Lincoln, NE 68583-0919, USA,The Food Processing Center, University of Nebraska-Lincoln, Lincoln, NE 68583-0919, USA;

    The Food Processing Center, University of Nebraska-Lincoln, Lincoln, NE 68583-0919, USA;

    Department of Food Science and Technology, University of Nebraska-Lincoln, 338 Food Industry Complex, Lincoln, NE 68583-0919, 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

    cheese; raw milk; food safety;

    机译:奶酪;生乳;食品安全;

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