Blocking agents caseins

Shalabi, S. I. and Wheelock, J. V. 1977. Effect of sulphydryl blocking agents on the primary phase of chymosin action on heated casein micelles and heated milk. J. Dairy Res. 44, 351-355. 

Milk has a relatively high content of the protein casein, which acts as an inexpensive blocking agent. 

Predominant protein blockers include bovine serum albumin (BSA), nonfat dry milk (NFDM), casein, and fish gelatin. NFDM, used at 0.1 0.5%, is inexpensive but preparations vary in quality. Some NFDM preparations contain histones that interfere with anti-DNA determinations or inhibitors of the biotin (strept)avidin interaction such as biotin itself. Casein is a chief component of NFDM and is often used alone as a blocking agent. 

Chem. Desaip Amide with enzyme blocking agents Uses Preservative for paints/coatings, casein glues and dyes containing nat. oils or fats for food contact... 

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