Bulletin of the IDF N°530/2024: Multi-laboratory study and interlaboratory study on the enumeration of bifidobacteria for in milk products

Publication description

This bulletin of the IDF presents the report of the precision data obtained from the multi-laboratory study and the interlaboratory study (ILS) organized for the revision of ISO 29981 | IDF 220:2010, Milk products — Enumeration of presumptive bifidobacteria — Colony count technique at 37 degrees C. From the result of the multi-laboratory study conducted ahead of ILS, it has been agreed that 48 h incubation as an alternative and TOS agar for only bifidobacteria-containing matrices are added in this method. ILS was organized in the harmonisation with ISO/TC 34/SC 9 (Food products - Microbiology). ILS was conducted using three food types; yoghurt, powdered formula and starter and probiotic culture, by collaborators participated from Europe and Japan in 2023, according to the Draft International Standard (DIS) version of ISO 29981 | IDF 220. The data of ILS has been analysed and accepted, therefore statistical data of ILS have been incorporated into ISO 29981 | IDF 220.

Keywords: bifidobacteria, probiotics, analytical method, enumeration, culture method, interlaboratory 

Cite this content as:

International Dairy Federation. (2024).Multi-laboratory study and interlaboratory study on the enumeration of bifidobacteria for in milk products (Bulletin of the IDF N° 530/2024). https://doi.org/10.56169/TDTN3840