摘要
以玉米芯为材料,分别从压强、温度、酸浓度以及水解时间几个方面对玉米芯的水解条件进行了研究,确定低压、120℃、水解时间为2 h作为玉米芯半纤维素的水解条件;同时研究了利用玉米芯水解液发酵生产木糖醇的条件,结果表明热带假丝酵母(Candida tropicalis)的最优发酵条件为:初始pH 7.5,装液量70%,接种量10%,发酵温度28℃.
The research on the hydrolysate conditions of corncob hemicellulosic have been done, and the optimum hydrolysate conditions were ascertained： the corncob with a ratio of 1 ： 6 w/v （dry basis）, low pressure, 120℃, time of hydrolysate was 2 h, 1.5 % H2SO4. Then, study on fermentation processes for xylitol production using corncob hemicellulosic hydrolysate also have been done, and obtained the optimum conditions： the initial pH was 7.5, the maximum amount of culture medium was 70 % of the flask volume, inoculum size was 10%, the culture temperature was 28℃.
出处
《四川大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第2期451-454,共4页
Journal of Sichuan University(Natural Science Edition)
基金
四川省重点项目支持(04NG002-006-1)
教育部新世纪人才支持计划(NCET-05-0785)
关键词
木糖醇
木糖
玉米芯水解液
发酵
xylitol, xylose, corncob hydrolysate, fermentation
