Xylo-oligosaccharides preparation through acid hydrolysis of hemicelluloses isolated from press-lye  

作　　者：Tiangui Wang Chuang Li Mengmeng Song Rongrong Fan 

机构地区：[1]College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology

出　　处：《Grain & Oil Science and Technology》2019年第3期73-77,共5页粮油科技（英文版）

基　　金：finically supported by Science and Education Integration Program of Henan University of Technology

摘　　要：The preparation of xylo-oligosaccharides(XOSs)through hydrolysis of hemicelluloses was studied.The hemicelluloses were isolated from the press lye discharged in the production of viscose,which contained about 30%xylan.Then,a factorial experimental design was applied to compare the influences of several factors including the concentrations of sulphuric acid and hemicelluloses,the duration and temperature of the hydrolysis,on the conversion of xylan,and the selectivity for the product–XOSs.The results showed that the hydrolysis duration affects the yield of XOSs to the greatest extent.It is difficult to obtain a high yield of XOSs with sulphuric acid as the hydrolysis catalyst.The preparation of xylo-oligosaccharides(XOSs) through hydrolysis of hemicelluloses was studied. The hemicelluloses were isolated from the press lye discharged in the production of viscose, which contained about 30% xylan. Then, a factorial experimental design was applied to compare the influences of several factors including the concentrations of sulphuric acid and hemicelluloses, the duration and temperature of the hydrolysis, on the conversion of xylan,and the selectivity for the product–XOSs. The results showed that the hydrolysis duration affects the yield of XOSs to the greatest extent. It is difficult to obtain a high yield of XOSs with sulphuric acid as the hydrolysis catalyst.

关 键 词：Xylo-oligosaccharides Hemicelluloses HYDROLYSIS CATALYSIS 

分 类 号：O62[理学—有机化学]