COMPARISON OF ANTIOXIDATIVE ACTIVITY AMONG 3 TYPES OF PROLAMIN SUBUNITS

The antioxidative effects of three prolamins, alpha/beta-gliadin, C ho rdein and alpha-zein, were investigated in powders in which the prolam in under test encapsulated peroxide-free ethyl esters of the unsaturat ed fatty acids, linoleic, alpha(gamma)-linolenic, arachidonic, eicosap entaenoic and docosahexaenoic acids, All prolamins inhibited the autox idation of ethyl esters of linoleic, linolenic and arachidonic acids, i.e. with two to four unsaturated beads. C hordein protected an eicosa pentaenoic acid ethyl ester from autoxidation in the powder system for 7 days, whereas other prolamins were less effective. None of the prol amins completely inhibited the autoxidation of docosahexaenoic acid et hyl ester. (C) 1998 Academic Press.