ISO 21528-1-2004 食品和动物饲料的微生物学.肠杆菌科检测和计数的水平法.第1部分_通过预浓缩MPN技术进行计数和检测.pdf

标准号：ISO 21528-1-2004
实施状态：作废
中文名称：食品和动物饲料的微生物学.肠杆菌科检测和计数的水平法.第1部分:通过预浓缩MPN技术进行计数和检测
英文名称：Microbiology of food and animal feeding stuffs - Horizontal methods for the detection and enumeration of Enterobacteriaceae - Part 1: Detection and enumeration by MPN technique with pre-enrichment
发布日期：2004-08
被替代标准：ISO 21528-1-2017
代替标准：ISO 5552-1997;ISO 7402-1993;ISO 8523-1991;ISO/FDIS 21528-1-2004
采用标准：DIN ISO 21528-1-2009,IDT;DIN ISO 21528-1-2008,IDT;BS ISO 21528-1-2004,IDT;NF V08-039-1-2004,IDTN-ISO 21528-1-2005,IDT;SANS 21528-1-2005,IDT;KS J ISO 21528-1-2007,IDT;GOST R 54005-2010,IDT;GOST 32064-2013,IDT;DS/ISO 21528-1-2005,IDT;UNI ISO 21528-1-2010-2010,IDT;STN ISO 21528-1-2007,IDT;SANS 21528-1-2005,IDT;SANS 21528-1-2005-2005,IDT;CSN ISO 21528-1-2006,IDT;DS/ISO 21528-1-2005,IDT;NEN-ISO 21528-1-2004 en-2004,IDT;SANS 21528-1-2005-2005,IDT
起草单位：ISO/TC 34
标准简介：This part of ISO 21528 specifies a method, with pre-enrichment, for the detection of Enterobacteriaceae. It 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.
Enumeration is carried out by calculation of the most probable number (MPN) after incubation at 37 ℃ (or 30 ℃)<up1)> in liquid medium.
This method is applicable
—  when the microorganisms sought are expected to need resuscitation before enrichment, and
—  when the number sought is expected to be in the range 1 to 100 per millilitre or per gram of test sample.
A limitation on the applicability of this part of ISO 21528 is imposed by the susceptibility of the method to a large degree of variability (see Clause 11).
note: 1) The temperature of 37 ℃ is generally used when the enumeration of Enterobacteriaceae is for a hygienic indicator. Alternatively, a temperature of 30 ℃ can be chosen when the enumeration of Enterobacteriaceae is conducted for technological purposes and includes psychrotrophic Enterobacteriaceae.
文件格式：PDF
文件大小：626.17KB
文件页数：20
（以上信息更新时间为：2019-11-22）



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