• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Australian Journal of Dairy Technology >A survey of the microbiological quality of frozen unpasteurised goats' milk in Queensland, Australia
【24h】

A survey of the microbiological quality of frozen unpasteurised goats' milk in Queensland, Australia

机译：澳大利亚昆士兰州冷冻未巴氏杀菌山羊奶的微生物学质量调查

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

An investigation of the microbiological quality of frozen unpasteurised goats' milk produced at three south-east Queensland dairies was carried out. A total of 269 milk samples were examined. All samples were analysed for coliforms, 214 for aerobic bacteria, 74 for coagulase-positive Staphylococci and Escherichia coli, 63 for Campylobacter, 55 for Salmonella and Listeria, and 34 for staphylococcal enterotoxin and Escherichia coli 0157:H7. No pathogens, toxins or faecal indicators (E. coli), were detected in any sample. A total of 90.2% of samples had standard plate counts (SPC) of greater than 2 log cfu/g. For the samples with counts greater than 2 log cfu/g, the mean was 3.8 log cfu/g, and counts at the 90th, 95th and 99th percentiles were 4.2, 4.3, and 4.8 log cfu/g, respectively. The maximum number of bacteria in any sample was 4.9 log cfu/g. Coliform counts were greater than 1 log cfu/g in 7.4 % of cases. Of these samples, the mean was 1.4 log cfu/g, and counts at the 90th, 95th and 99th percentiles were 1.9, 2.0, and 2.1 log cfu/g, respectively. The maximum number of coliforms in any sample was 2.3 log cfu/g. There were differences in mean bacterial counts between seasons, with SPC counts significantly higher in winter (p<0.05) and coliform counts significantly higher in summer (p<0.05). The microbiological quality of unpasteurised goats' milk as found in the present study is generally better than that reported in earlier work. These data can be used for risk assessments aimed at determining the safety of unpasteurised goats' milk in Queensland.
机译：对昆士兰州东南部三个奶牛场生产的冷冻未经巴氏消毒的山羊奶的微生物学质量进行了调查。总共检查了269个牛奶样品。分析所有样品的大肠菌，214种好氧细菌，74种凝固酶阳性葡萄球菌和大肠杆菌，63种弯曲杆菌，55种沙门氏菌和李斯特菌，34种葡萄球菌肠毒素和大肠杆菌0157：H7。在任何样品中均未检测到病原体，毒素或粪便指示剂（大肠杆菌）。总计90.2％的样品的标准板计数（SPC）大于2 log cfu / g。对于计数大于2 log cfu / g的样本，平均值为3.8 log cfu / g，在第90、95和99％百分数分别为4.2、4.3和4.8 log cfu / g。任何样品中的最大细菌数为4.9 log cfu / g。在7.4％的病例中，大肠菌群计数大于1 log cfu / g。在这些样本中，平均值为1.4 log cfu / g，在第90、95和99％百分数分别为1.9、2.0和2.1 log cfu / g。任何样品中大肠菌的最大数量为2.3 log cfu / g。不同季节之间的平均细菌计数存在差异，冬季的SPC计数显着较高（p <0.05），夏季的大肠菌群计数显着较高（p <0.05）。在本研究中发现的未经巴氏消毒的山羊奶的微生物质量通常优于早期工作中报道的质量。这些数据可用于风险评估，旨在确定昆士兰州未经巴氏消毒的山羊奶的安全性。

著录项

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