ISO 9231 | IDF 139: 2008 - Milk and milk products - Determination of the benzoic and sorbic acid contents Language:EN of which it constitutes a

of which it constitutes a minor revision to incorporate the amendment ISO 9233‑2:2007/Amd

and butter to which vegetable fat

5 µg of PCB per kilogram of fat

This standard specifies a photometric method for the determination of the lactoperoxidase activity in milk in amounts exceeding 50 U/l

ISO 9231 | IDF 139: 2008 - Milk and milk products - Determination of the benzoic and sorbic acid contents Language:EN of which it constitutes aThis standard specifies a method for the determination of the benzoic and sorbic acid contents in milk and milk products. The method is applicable to milk, dried milk, yogurt and other fermented milks, and cheese and processed cheese, and is suitable for measuring the contents of both compounds at levels of more than 5 mg kg.