摘要:
采用微波诱变技术对黑曲霉J2进行选育,得到1 株α-葡萄糖苷酶活力较高的突变菌株ANY-4,酶活力达到305 U/mL,比出发菌株提高了38.6%,且稳定性良好。通过单因素和正交试验得到最适培养条件为:玉米淀粉80 g/L、玉米浆干粉40 g/L、初始pH 4.5、装液量50 mL/500 mL、接种量3%、培养温度36 ℃、摇床转速240 r/min、培养时间40 h。在最优培养条件下进行发酵,α-葡萄糖苷酶活力达到427 U/mL,比优化前提高了40%。
中图分类号:
易菊阳,梁钰婷,陆 兵,吴 昊,黄桂华,陈桂光,梁智群. 高产α-葡萄糖苷酶黑曲霉的微波选育及发酵条件优化[J]. 食品科学, doi: 10.7506/spkx1002-6630-201415030.
YI Ju-yang, LIANG Yu-ting, LU Bing, WU Hao, HUANG Gui-hua, CHEN Gui-guang, LIANG Zhi-qun. Microwave Breeding of Aspergillus niger with High α-Glucosidase Activity and Optimization of Its Fermentation Conditions[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201415030.