Issue 4: IDF Dairy Sustainability Outlook
IDF’s Dairy Sustainability Outlook publication series provides new case studies to support the dairy sector in delivering on its commitment to sustainable development.
Bulletin of the IDF N° 511/2021: Guidance on the application of conversion equations for determination of microbiological quality of raw milk
The microbiological quality of raw milk – the Total Bacteria Count – is routinely recorded by automated milk analyzers based on Flow Cytometry, whereas Standard Plate Count is still the anchor method and quoted by many official regulations. Often the units of the alternative analysers are converted into anchor method units. This Bulletin describes the […]
Bulletin of the IDF N° 510/2021: Inventory, evaluation and perspectives on methods for determination of somatic cell count
Somatic cell count (SCC) represents the total number of somatic cells in milk and is used as an indicator for udder health and milk quality worldwide. The current reference method for SCC, which is based on microscopy, has been described as challenging to work with. Hence, the objective of this work is to define the […]
ISO 14501 | IDF 171: 2021 – Milk and milk powder – Determination of aflatoxin M1 content – Clean-up by immunoaffinity chromatography and determination by high-performance liquid chromatography
This document specifies a method for the determination of aflatoxin M1 content in milk and milk powder. The lowest level of validation is 0,08 µg/kg for whole milk powder, i.e. 0,008 µg/l for reconstituted liquid milk. The limit of detection (LOD) is 0,05 μg/kg for milk powder and 0,005 μg/kg for liquid milk. The limit […]
ISO 21187 | IDF 196: 2021 Milk – Quantitative determination of microbiological quality – Guidance for establishing and verifying a conversion relationship between results of an alternative method and anchor method results
This document gives guidelines for the establishment of a conversion relationship between the results of an alternative method and an anchor method, and its verification for the quantitative determination of the microbiological quality of milk. The conversion relationship can be used a) to convert results from an alternative method to the anchor basis or b) […]
Bulletin of the IDF N° 509/2021: Lactose, an important nutrient: Advocating a revised policy approach for dairy & its intrinsic sugar
This Bulletin summarizes the scientific evidence on the nutritional and health properties of lactose as naturally found in milk and other dairy foods. It outlines the key role that milk and dairy products have in a healthy diet and argues that lactose, as an inherent sugar, forms an important part of the dairy matrix. Keywords: […]
IDF Factsheet 17/2021: Cheese and Varieties Part I: What is cheese?
What is cheese? Cheese is a ripened or unripened product made by coagulation of the proteins in milk through the action of rennet or another coagulant. Dehydration, often fermentation by lactic acid bacteria (LAB) and salt addition during cheese manufacture increase its shelf-life. Cheese contains the main milk protein casein, milk fat, the mineral calcium […]
IDF Factsheet 18/2021: Cheese and Varieties Part II: Cheese Styles
Cheese contains the main milk protein casein, milk fat, the mineral calcium phosphate, about 36-43% water, lactic acid and 1.5% salt for a hard cheese. Coagulum cutting size, curd heating conditions and pressing influence moisture content and texture. Often ripening by enzymes from milk, rennet, LAB and partly ripening microorganisms occurs to develop flavour and […]
Bulletin of the IDF N° 508/2021: Guidance on application of EC JRC Certified Reference Material for somatic cell counting in milk
This paper provides relevant guidance on how to apply this material for method performance verification of both the microscopic reference method and routine methods, for verification and possibly required adjustment of calibration settings of routine methods, for assigning reference values to secondary reference materials and for use in proficiency testing.
ISO 22184 I IDF 244: 2021 – Milk and milk products – Determination of the sugar contents – High performance anion exchange chromatography with pulsed amperometric detection method (HPAEC-PAD)
This document specifies the quantitative liquid chromatographic determination of specific sugars (galactose, glucose, fructose, sucrose, lactose and maltose) in various milk and milk products, applying arabinose as an internal standard. The method is applicable to the following dairy matrices: milk, sweetened condensed milk, milk powder, cheese, whey powder, infant formula, milk dessert and yoghurt. The […]
