RIDASCREEN® β-Lactoglobulin is a competitive enzyme immunoassay for the quantitative analysis of native and processed β-lactoglobulin in hydrolyzed milk products including hypoallergenic baby food. The assay is calibrated to native β-lactoglobulin. However, the assay detects native and processed protein and fragments thereof (during the heating of milk, the native ß-lactoglobulin is partially denatured).
Cow’s milk contains approx. 3.2 % proteins (2.6 % caseins and 0.6 % whey proteins). Approx. half of the whey fraction consists of β-lactoglobulin.
Milk can be present as an ingredient or as a contamination in raw and processed products. According to the EU Directive 2003/89/EG from 10th November 2003, milk must be declared on food labels as it can induce allergic reactions.