Bovine Rennet Whey (BRW) ELISA
Cat. No.: 5171BRW
Bovine rennet whey (BRW) is a low-priced by-product obtained during cheese production from cows’ milk that can be used to adulterate high-priced milk products. Adulteration of skimmed milk powders is particularly attractive as the European Union subsidizes the public storage of skimmed milk powders and the processing of these powders intended for animal feed. Besides from economical loss, fraudulent addition of rennet whey to dairy products can also lead to quality problems in end-products such as yoghurt and infant formulas.
Addition of rennet whey to dairy products can be detected by the presence of casein glycomacropeptide (CMP), a compound specific to rennet whey. The BRW ELISA is suitable for the detection of bovine rennet whey in milk powders with a detection limit of 1% (w/w), using a monoclonal antibody that recognizes CMP as a marker.
The antiserum used in the ELISA shows the following cross-reactivities: Қ-casein 100 %; ß-casein 40 %; У-casein 9 %; α-casein 2.5%.
Concerning the sensitivity of the test; Milk powder containing 1% bovine whey proteins are scored as positive.
Detailed information of this product is given in the Product Information Sheet.