Publication

Influence of trypsin deactivation on the hydrolysis of whey proteins

Albert Renken
1992
Journal Articles

Abstract

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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https://infoscience.epfl.ch/entities/publication/2bf75c78-5b3a-4970-9867-24f6636ad97d

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Albert Renken
1992
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/2bf75c78-5b3a-4970-9867-24f6636ad97d

About this result

Related concepts (13)

Enzyme catalysis

Enzyme catalysis is the increase in the rate of a process by a biological molecule, an "enzyme". Most enzymes are proteins, and most such processes are chemical reactions. Within the enzyme, generally catalysis occurs at a localized site, called the active site. Most enzymes are made predominantly of proteins, either a single protein chain or many such chains in a multi-subunit complex. Enzymes often also incorporate non-protein components, such as metal ions or specialized organic molecules known as cofactor (e.

Enzyme kinetics

Enzyme kinetics is the study of the rates of enzyme-catalysed chemical reactions. In enzyme kinetics, the reaction rate is measured and the effects of varying the conditions of the reaction are investigated. Studying an enzyme's kinetics in this way can reveal the catalytic mechanism of this enzyme, its role in metabolism, how its activity is controlled, and how a drug or a modifier (inhibitor or activator) might affect the rate. An enzyme (E) is typically a protein molecule that promotes a reaction of another molecule, its substrate (S).

Enzyme inhibitor

An enzyme inhibitor is a molecule that binds to an enzyme and blocks its activity. Enzymes are proteins that speed up chemical reactions necessary for life, in which substrate molecules are converted into products. An enzyme facilitates a specific chemical reaction by binding the substrate to its active site, a specialized area on the enzyme that accelerates the most difficult step of the reaction.

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Influence of trypsin deactivation on the hydrolysis of whey proteins

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