高产舍雷肽酶的粘质沙雷氏菌诱变选育
Food and Fermentation Industries（2018）
Abstract
舍雷肽酶是一种来自粘质沙雷氏菌(Serratia marcescens)的碱性蛋白酶,具有良好的抗炎和抗肿胀作用,应用于临床疾病的治疗已有多年.为了获得产酶活力高、传代稳定且不产灵菌红素的舍雷肽酶发酵生产菌株,以1株分离自家蚕(Bombyx mori)肠道,产舍雷肽酶的粘质沙雷氏菌LL-413为出发菌株,用紫外线和微波连续诱变,经过筛选,获得了2株产酶能力高,不产灵菌红素,且传代稳定的突变株MW-9和MW-14菌株,产酶活力分别达到982 U/mL和956 U/mL,是原始菌株的1.98倍和1.92倍.
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