粮油食品科技
糧油食品科技
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Science and Technology of Cereals, Oils and Foods
2015年
5期
24-26
,共3页
玉米芯%木聚糖%超声波%碱法
玉米芯%木聚糖%超聲波%堿法
옥미심%목취당%초성파%감법
corncob%xylan%ultrasound%alkali method
以玉米芯为原料，经高温预处理后，采用超声波辅助碱法提取玉米芯木聚糖，在单因素实验的基础上，通过正交试验对玉米芯木聚糖提取工艺进行优化。结果表明：木聚糖的最佳制备工艺为氢氧化钠浓度7％，料液比1∶25，超声功率250 W，超声时间40 min，超声温度60℃。在此条件下，提取液中以玉米芯计还原糖的含量为64．10 mg／g，可溶性总糖含量为100．14 mg／g，木聚糖得率为9．01％。
以玉米芯為原料，經高溫預處理後，採用超聲波輔助堿法提取玉米芯木聚糖，在單因素實驗的基礎上，通過正交試驗對玉米芯木聚糖提取工藝進行優化。結果錶明：木聚糖的最佳製備工藝為氫氧化鈉濃度7％，料液比1∶25，超聲功率250 W，超聲時間40 min，超聲溫度60℃。在此條件下，提取液中以玉米芯計還原糖的含量為64．10 mg／g，可溶性總糖含量為100．14 mg／g，木聚糖得率為9．01％。
이옥미심위원료，경고온예처리후，채용초성파보조감법제취옥미심목취당，재단인소실험적기출상，통과정교시험대옥미심목취당제취공예진행우화。결과표명：목취당적최가제비공예위경양화납농도7％，료액비1∶25，초성공솔250 W，초성시간40 min，초성온도60℃。재차조건하，제취액중이옥미심계환원당적함량위64．10 mg／g，가용성총당함량위100．14 mg／g，목취당득솔위9．01％。
Xylan from corncobs was obtained by the method of high temperature pretreatment and ultra-sound -assisted alkaline hydrolysis.The extraction process of xylan was optimized by orthogonal experi-ment on the basis of single factor.The result indicated that the optimal parameters were as follows:the concentration of sodium hydroxide 7%,ratio of solid to liquid 1∶25,ultrasonic power 250 W,ultrasonic time 40 min,ultrasonic temperature 60 ℃.Under the optimized conditions,the yield of reducing sugar and total sugar in hydrolysate was 64.10 mg/g and 100.14 mg/g of raw corncobs,respectively.The yield of xylan was 9.01%.
