Modification Study on Goat Milk Casein by Transglutaminase

Abstract

Abstract: The casein of goat milk modified by transgluatminase was studied.SDS-PAGE assay showed that high-molecular-weight biopolymers were formed.The appropriate conditions to form the biopolymers were as follows:ezyme/protein=15U/g:pH 60～8.0; appropriate temperature 50℃and appropriate time 120min.The result, also showed that β- casein and α-casein were more easily polymerized by TGase than k-casein.After polymerization,the emulsifying stability and theviscosity of casein were increased.,while the foaming property of casein was decreased.

Key words: Transglutaminase, casein, SDS-PAGE, biopolymer

CAI Hui-Nong, LI Ya-Ling, CHEN Fa-He. Modification Study on Goat Milk Casein by Transglutaminase[J]. FOOD SCIENCE, 2004, 25(2): 107-111.

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Modification Study on Goat Milk Casein by Transglutaminase

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