ISO/TS 16649-3:2005 食物和动物饲料的微生物学-用于贝它-葡糖苷酸酶-阳性大肠杆菌计算的水平线方法 第3 部分： 采用5-溴-4 -氯-3-吲哚-贝它-D-葡糖苷酸酶的最大概率数值技术

标准编号：ISO/TS 16649-3:2005

中文名称：食物和动物饲料的微生物学-用于贝它-葡糖苷酸酶-阳性大肠杆菌计算的水平线方法 第3 部分： 采用5-溴-4 -氯-3-吲哚-贝它-D-葡糖苷酸酶的最大概率数值技术

英文名称：Microbiology of food and animal feeding stuffs — Horizontal method for the enumeration of beta-glucuronidase-positive Escherichia coli — Part 3: Most probable number technique using 5-bromo-4-chloro-3

发布日期：2005-09

标准范围

ISO/TS 16649-3:20 05规定了一种用于计数β-葡萄糖醛酸酶阳性大肠杆菌的水平方法，通过液体培养基培养技术和在37℃、然后在44℃孵育后计算最可能数（MPN）。本技术规范适用于供人食用和喂养动物的产品，以及食品生产和食品处理领域的环境样品。该方法适用于计数大肠杆菌细胞，该大肠杆菌细胞可能已经经历了由脱水、冷冻、暴露于盐水（如海洋）环境或消毒剂（如含氯产品）损害引起的应激。

ISO/TS 16649-3:2005 specifies a horizontal method for the enumeration of beta-glucuronidase-positive Escherichia coli, by means of the liquid-medium culture technique and calculation of the most probable number (MPN) after incubation at 37 °C, then at 44 °C.This Technical Specification is applicable to products intended for human consumption and the feeding of animals, and environmental samples in the area of food production and food handling.The method is suitable for the enumeration of cells of Escherichia coli that may have been subjected to stress arising from dehydration, freezing, exposure to a saline (such as marine) environment or damage by disinfectants such as chlorine-containing products.

标准预览图