Infoscience

Journal article

Influence of trypsin deactivation on the hydrolysis of whey proteins

The kinetics of whey protein (WP) hydrolysis with trypsin (I) and of the thermal and autolytic deactivation of I were studied at conditions of temp. (55, 60, 70 Deg), starting I:WP concn. (2 * 10-3 - 10 * 10-3 g/g), and pH (7.3) pertinent to those employed during the tech. hydrolysis of WP for the manuf. of dietetic and baby/infant foods. Rate consts. and activation energies for the deactivation were calcd. assuming a 2-stage model incorporating an active intermediate enzyme form and a final nonactive enzyme form. The activity of the intermediate enzyme form was higher than that of the original I species. [on SciFinder (R)]

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