Action of rennin on casein. III. Effect of alpha s- and beta-casein on the secondary phase.
The action of rennin on kappa-casein was studied as a function of time, employing turbidity measurements at 610 nm and the release of nonprotein nitrogen. kappa-Casein was converted to para-kappa-casein by the action of rennin. The para-kappa-casein aggregated to increase turbidity and then precipitated. Turbidity development was enhanced initially and then retarded severely by increasing concentrations of added alpha s- and beta-casein. The addition of selected amino acids and salts had variable effects on increase of turbidity.
D000596:Amino Acids / Q000378:metabolism; D000818:Animals; D002364:Caseins / Q000378:metabolism*; D002417:Cattle; D012085:Chymosin / Q000378:metabolism / Q000494:pharmacology*; D009391:Nephelometry and Turbidimetry
D000596:Amino Acids; D002364:Caseins; D012085:Chymosin