固态发酵生产活性干酵母的研究  

Study on the production of active dry yeast by solid fermentation

作　　者：楼志坚 戴利伟 张艳丽[2] 

机构地区：[1]浙江星野集团有限责任公司,浙江杭州310010 [2]浙江工业大学生物工程学院,浙江杭州310014

出　　处：《发酵科技通讯》2016年第2期98-102,共5页Bulletin of Fermentation Science and Technology

摘　　要：以酿酒活性干酵母为对象,以麸皮、玉米粉、米糠为基本原料,经固态培养基选择优化,酵母细胞数高于4.47×10~9 CFU/g。在此基础上加入一定量糖化酶、酸性蛋白酶,并对培养基进行优化,酵母细胞数高达6.0×10~9 CFU/g。另外,在载体培养初步研究中,把玉米水解液加到多孔性材料中进行酵母培养,酵母细胞数高于5.0×10~8 CFU/m L。The solid state fermentation medium of active dry Saccharomyces cerevisiae was optimized with bran, corn powder and rice bran as raw material. The number of yeast cells was higher than 4.47 ×10~9 CFU/g. After further optimization of the culture medium with addition of certain amount of glucoamylase and acid protease, the number of yeast cells reached 6.0×10~9 CFU/g. Furthermore, the corn hydrolysate was added to the porous material during the carrier culture and the number of yeast cells was higher than 5.0×10~8 CFU/m L.

关 键 词：活性干酵母 固体培养 多孔性材料 糖化酶 酸性蛋白酶 

分 类 号：TQ92[轻工技术与工程—发酵工程]