This Technical Specification specifies a method for the enumeration of colony-forming units (CFU) of specially thermoresistant spores of thermophilic bacteria in dried milk products by using a colony-count technique at 55 ℃ after heating the sample at 106 ℃.
The applicability of this Technical Specification is limited to dried whole milk, skim milk, and buttermilk products that are destined to be recombined and used in the manufacture of sterilized (e.g. UHT or retort treated) milk products.
IDF/RM 228-2009 Referenced Document
ISO 6887-5 Microbiology of the food chain — Preparation of test samples, initial suspension and decimal dilutions for microbiological examination — Part 5: Specific rules for the preparation of milk and milk pro*， 2020-04-30 Update
ISO 7218 Microbiology of food and animal feeding stuffs — General requirements and guidance for microbiological examinations AMENDMENT 1
ISO/TS 11133-1 Microbiology of food and animal feeding stuffs - Guidelines on preparation and production of culture media - Part 1: General guidelines on quality assurance for the preparation of culture media in the laboratory
IDF/RM 228-2009 history
2009IDF/RM 228-2009 Dried milk - Enumeration of the specially thermoresistant spores of thermophilic bacteria