摘要
提出了湿磨和稀硫酸预水解相结合的啤酒麦糟酶解前预处理方法。湿磨压榨处理可以分离出麦糟中约５０％的蛋白质，并能提高麦糟纤维素酶解糖得率１４％左右。用０．７５％的硫酸，固液比１：８至１：１０预水解时，１２１～１２５℃下最佳预水解时间为８０～１００ｍｉｎ；１５０℃下最佳预水解时间为１５～２０ｍｉｎ。在最佳预水解条件下，预水解糖得率为９５．０％，纤维素酶水解得率为７６．４％，多聚糖水解糖总得率为８８．９％。
Beer brewers spent barley grain was pretreated by wet grinding and dilute H_2SO_4 prehydrolysisbefore enzymatic hydrolysis of the residual fibers. About 50%of the proteins could be removed from spentgrain in wet grinding,and sugar yleld of enzymatic hydrolysis could also be increased by l4%. In the acidprehydrolysis with H_2SO_40.75%and ratio of solid to liquid l:8～1:10,the optimal reaction tirnes were80～100 min at 121～125℃ or 15～20 min at 150℃. 95%sugar yields from starch and pentose in the pre-hydrolysis,76.4%from cellulose in the enzymatic hydrolysis,and 88.9%from total polysaccharides inthe whole process could be obtained respectively.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
1995年第1期67-71,共5页
Chemistry and Industry of Forest Products
关键词
啤酒
麦糟
酶水解
前处理
Pretreatment
Beer brewers'spent barley grain
Enzyrnatic hydrolysis
