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different instrument setups for transmittance
The reference method remains the gravimetric method (by ammoniacal ether extraction) described in ISO 2450 | IDF 16
0 % of total soluble carbohydrates
Considerations on methods for spore counting of butyric acid forming (“cheese spoiling”) clostridia (Bulletin of the IDF N° 533/2025)
ISO 29981 | IDF 220: 2024 - Milk products — Enumeration of bifidobacteria — Colony-count technique Language:FR different instrument setups for transmittanceThis document specifies a method for the selective enumeration of bifidobacteria in milk products by using a colony count technique at 37 C under anaerobic conditions. The method is applicable to milk products, such as fermented (e. g. yoghurts) and non fermented milks (e. g. pasteurized milks, skim milks, whey protein concentrates), milk powders and formulae (e. g. infant formulae, follow up formulae for older infants, products for young children)
