Microbiology of food and animal feeding stuffs - Horizontal methods for the detection and enumeration of Enterobacteriaceae - Part 2: Colony-count method
|Publication Date:||1 August 2004|
|ICS Code (Microbiology in general):||07.100.01|
This part of ISO 21528 specifies a method, without pre-enrichment, for the enumeration 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 counting colonies in a solid medium after incubation at 37 °C (or 30 °C). This technique is recommended when the number of colonies sought is expected to be more than 100 per millilitre or per gram of the test sample.