摘要
研究了不同条件下微生物转谷氨酰胺酶 (MTGase)催化酪蛋白酸钠聚合。结果显示 ,MTGase较易催化α 以及β 酪蛋白 ,而不易催化κ 酪蛋白 ,随着酪蛋白量的不断下降 ,而形成的生物聚合物量不断增多。MTGase催化酪蛋白酸钠聚合的较佳条件如下 :酶量 /酪蛋白酸钠比例为 10～ 2 0U/g ,pH 6 0～ 8 0 ,最适催化温度为 37～ 5 0℃。
The polymerization of sodium caseinate by microbial transglutaminase (MTGase) at different conditions was studied. It was shown that α- and β-caseinate were more easily catalyzed by MTGase than κ-caseinate, and the biopolymer of sodium caseinate increased as the amount of caseinate declined. The appropriate conditions of MTGase to catalyze the sodium caseinate was followed as: the rate of enzyme activities to sodium caseinate at 10～20?U/g,pH6.0～8.0,and the best appropriate temperature at 37～50℃.
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2002年第6期17-22,共6页
Food and Fermentation Industries
