不同预处理对玉米芯酶解特性和微观结构的影响  

Effects of Different Pretreatment Solution Properties and Micro Structure of Corn Cob Enzyme

作　　者：侯丽芬[1] 孙向阳[2] 丁长河[3] 

机构地区：[1]郑州旅游职业学院,郑州450009 [2]河南牧业经济学院,郑州450011 [3]河南工业大学,郑州450052

出　　处：《食品工业》2015年第6期32-35,共4页The Food Industry

基　　金：河南省杰出人才创新基金资助项目(0621000900)

摘　　要：以玉米芯为原料,研究了稀酸、先碱后酸、稀碱和碱性H2O2四种预处理方法对玉米芯酶解特性和微观结构的影响。结果表明,先碱后酸和碱性H2O2预处理得到玉米芯中的木质素含量分别降低了92.0%和70.4%;酶解12 h的木聚糖提取率分别为24.3%和25.4%;木聚糖的水解率分别为67.4%和71.6%,且两者酶解得到的木二糖较多;同时,处理后的玉米芯在微观结构上分别出现了较大的孔洞,结构变得非常疏松。With corncob as raw material,the dilute acid,acid pretreatment after alkali,alkali and alkaline H_2O_2,four pretreatment methods of solution affects the properties and micro structure of corncob enzyme were studied.Among them,acid pretreatment after alkali and alkaline pretreatment with H_2O_2 from corncob lignin content were decreased by 92%and 70.4%;Xylan extraction rate of enzyme solution 12 h were 24.3%and 25.4%;Xylan hydrolysis rates were 67.4%and 71.6%,and both enzyme obtained more xylobiose;At the same time,after the treatment of corn cob in microscopic structure appeared respectively larger pores,structure became very loose.

关 键 词：玉米芯 预处理 酶解 微观结构 

分 类 号：TQ914.3[化学工程]