ISO/TS 27265 | IDF/RM 228: 2026 – Heat-processed milk and dried milk products — Enumeration of thermoresistant spores of thermophilic bacteria

This document specifies methods for the enumeration of thermoresistant spores of thermophilic bacteria in heat-processed milk and dried milk products by using a colony count technique at 55 °C after heating the sample at 106 °C or 100 °C. The applicability of this document is limited to heat-processed milk including pasteurized, ultra-high temperature (UHT) processed […]

ISO 9877 | IDF 258: 2026 – Milk and milk products — Determination of ash

This document specifies a method for the determination of the ash content in milk, milk powder, whey powder, whey protein concentrate, infant formula, milk permeate powder and milk protein concentrate. NOTE: For the determination of ash (“fixed ash”) of caseins and caseinates, see ISO 5544 | IDF 89.

ISO 16958 | IDF 231: 2026 – Milk, milk products, infant formula and adult nutritionals — Determination of fatty acids composition — Capillary gas chromatographic method

This document specifies a method for the quantification of individual and/or all fatty acids content in the profile of milk, milk products, infant formula and adult nutritional formula, containing milk fat and/or vegetable oils, supplemented or not supplemented with oils rich in long chain polyunsaturated fatty acids (LC-PUFA). This also includes groups of fatty acids […]

ISO 7889 | IDF 117: 2026 – Yoghurt — Enumeration of characteristic microorganisms — Colony-count technique

This document specifies a method for the enumeration of the characteristic microorganisms Lactobacillus delbrueckii subsp. bulgaricus (in short: L. bulgaricus) and Streptococcus thermophilus (in short: S. thermophilus) by means of the colony-count technique. The method is applicable to yoghurts (for the definition see CXS 243‑2003[7]). The colony-count technique (pour plates) is suitable for, but not […]

Bulletin of the IDF N°538/2025: Interlaboratory study on the enumeration of characteristic microorganisms in yoghurt

This bulletin of the IDF (International Dairy Federation) presents the report of the precision data obtained from the interlaboratory study (ILS) organized for the revision of ISO 7889 | IDF 117 ‘Yoghurt — Enumeration of characteristic microorganisms — Colony-count technique’. The ILS was conducted using samples of yoghurt with different levels of Streptococcus thermophilus and Lactobacillus delbrueckii subsp. bulgaricus. […]