响应面优化超声波辅助碱法提取酒糟中半纤维素A  

Extraction Optimization of Hemincellulose A from Distillers Grains with Ultrasonic-assisted Alkaline by Response Surface Methodology

作　　者：裴芳霞 李志忠[1] 任海伟[1] 张曼芳[1] 宋妍[1] 王腾[1] 谢丹[1] 喻春来 

机构地区：[1]兰州理工大学生命科学与工程学院/甘肃省生命科学与食品工程实验教学示范中心,甘肃兰州730050

出　　处：《粮油加工（电子版）》2015年第9期54-56,61,共4页Machinery for Cereals Oil and Food Processing Main Contents

基　　金：甘肃省自然科学基金(145RJZA064;148RJZA015);甘肃省高等学校科研项目(2014A-030);国家级大学生创新创业训练计划项目(201310731012);兰州理工大学红柳青年教师培养计划(Q201207)

摘　　要：采用超声波辅助碱法从白酒糟中提取半纤维素A,通过响应面试验设计探讨KOH溶液质量分数、浸提温度和超声波时间对提取得率的影响,优化提取参数。结果表明:在KOH溶液质量分数为7%、浸提温度为58℃和超声波时间为21min条件下,酒糟中半纤维素A得率为37.17%,说明采用超声波辅助碱法分离半纤维素A的工艺可行。Ultrasonics-assisted alkaline method has been employed into the process of extraction of hemicelluloses A from distillers grains. Influences of KOH mass concentration, extraction temperature and ultrasonic time were evaluated ; the best condition of extraction was optimized by response surface methodology （RSM） . Results showed that optimal extraction conditions were KOH mass concentration of 7%, extraction temperature of 58℃, and ultrasonic time of 21 min. Under this condition, extraction rate of hemincellulose A was 37.17%.

关 键 词：酒糟 半纤维素 超声波辅助碱法 响应面 

分 类 号：TS26[轻工技术与工程—发酵工程]