玉米芯制木糖醇生产工艺的优化研究  

PREPARATION OF REFINING XYLITOL FROM CORNCOB

作　　者：李琰[1] 王晓曦[2] 张雪[1] 

机构地区：[1]郑州牧业工程高等专科学校食品工程系,河南郑州450008 [2]郑州工程学院粮油食品学院,河南郑州450052

出　　处：《郑州工程学院学报》2004年第1期71-73,共3页

摘　　要：以玉米芯为原料,经清洗、干燥、破碎(粒度φ为3～5mm)后用酸水解,再中和、蒸发、脱色、离子交换、加氢、浓缩、结晶生产木糖醇.采用正交试验法研究了水解条件对木糖醇得率的影响,确定了最佳生产工艺条件:加HCl的浓度为2.0%、水解压力0.1MPa、水解温度120℃、水解时间4h 进一步将母液进行再回收处理,使木糖醇得率提高了15%～20%.所得木糖醇得率达60.2%.Refining xylitol was prepared from corncob through the processing of washing,drying,crashing (granularity 3～5 mm),acid hydrolysis,neutralization,evaporation,bleaching,ion exchanging,hydrogenation,concentration and crystallization.The effect of hydrolysis conditions on the yield of xylitol had been investigated by orthogonal test.The optimal parmeters were as follows:the hydrochloric acid concentration 2.0%,hydrolysis pressure 0.1 MPa,temperature 120 ℃,reaction time 4 h.The yield of refining xylitol was 60.2%.

关 键 词：玉米芯 木糖醇 生产工艺 酸水解 得率 优化 

分 类 号：TS245.8[轻工技术与工程—制糖工程]