Bulletin of the IDF N° 281/1993 – Catalogue of tests for the detection of post-pasteurization contamination of milk
By a Group of Experts The control of recontamination by heat-labile bacteria after pasteurization of milk is of paramount importance in ensuring the quality of the product. As the level of recontamination varies between countries, it is not possible to establish a «standard method». In this bulletin the microbiology of pasteurized milk is described briefly. […]
ISO 14674 | IDF 190: 2005: Milk and milk powder – Determin. of aflatoxin M1 content – Clean-up by immunoaffinity chromatography and determination by thin-layer chromatography
This standard specifies a method for the determination of the aflatoxin M1 (AFM1) content of milk and milk powder by a method including a clean-up step using immunoaffinity chromatography followed by a thin-layer chromatography (IAC-TLC). The method is applicable to raw milk, low fat or skimmed liquid milk and milk powder.The lowest quantity of AFM1 […]
ISO 14461-1 | IDF 169-1:2005: Milk and milk products – Quality control in microbiological laboratories – Part 1: Analyst performance assessment for colony counts
This standard describes a procedure for testing the performance of the colony-count technique within a laboratory by establishing the within-laboratory variability of its technique and identifying those steps that are associated with excessive variability. The procedure is also suitable for checking the proper observance of Good Laboratory Practice (GLP), which may be a prerequisite for […]
ISO 14461-2 | IDF 169-2: 2005 – Quality control in microbiological laboratories – Part 2: Determination of the reliability of colony counts of parallel plates and subsequent dilution steps
This standard describes a routine procedure for the evaluation of results of the enumeration of microorganisms using colony-count methods with subsequent 10-fold dilution steps and one plate or two parallel plates within each dilution step. This routine procedure is applied regularly in each laboratory performing colony counts. It provides criteria for the acceptability of differences […]
ISO 13580 | IDF 151 – 2005: Yogurt – Determination of total solids content (Reference method)
This standard specifies a reference method for the determination of the total solids content of plain, flavoured, sweetened and fruit yogurts. Standard only available in English.
ISO 13875 | IDF 178: 2005 – Liquid milk – Determination of acid-soluble beta-lactoglobulin content – Reverse-phase HPLC method
This standard specifies a method for the quantitative determination of the beta-lactoglobulin content, soluble at pH 4,6, in liquid milk. The method has been tested over a range between 0 mg and 3 500 mg of beta-lactoglobulin per litre of milk. It is suitable for distinguishing different categories of heat-treated liquid milk. Standard only available […]
ISO 18329 | IDF 193: 2004 – Milk and milk products – Determination of furosine content Ion-pair-reverse-phase high-performance liquid chromatography method
This standard specifies a method for the quantitative determination of furosine in milk and milk products. The method is particularly applicable to raw or heat-treated milk and to cheese. Standard only available in English.
ISO 8069 | IDF 69: 2005 – Dried milk – Determination of lactic acid and lactates
This standard specifies an enzymatic method for the determination of the lactic acid and lactates content of all types of dried milk. Standard only available in English.
ISO 14892 | IDF 177 – 2002: Dried skimmed milk – Determination of vitamin D content using high-performance liquid chromatography
This standard specifies a method for the determination of vitamin D in a test sample containing at least 10 micrograms of vitamin D per 100 g [equal to 400 International Units (IU) of vitamin D per 100 g] by using high-performance liquid chromatography (HPLC). The results of the determination are only reliable if, in the […]
ISO 11285 | IDF 175: 2004 – Milk – Determination of lactulose content – Enzymatic method
This standard specifies an enzymatic method for the determination of the lactulose content of milk. Standard only available in English.
