响应面试验优化红姑娘红薯中不溶性纤维的提取工艺及动力学分析  

Optimization and kinetics analysis of insoluble fiber extraction in sweet potato

作　　者：何春玫[1] 梁宇宁[2] 项有泳 He Chun-mei;Liang Yu-ning;Xiang You-yong(Guangxi Agricultural Vocational and Technical College,Nanning 530007,China;Guangxi Normal University,Guilin 541004,China;Guangyuan agricultural development co.,LTD,Fangchenggang,Guangxi 538100,China)

机构地区：[1]广西农业职业技术学院,南宁530007 [2]广西师范大学,桂林541004 [3]防城港市广源农业开发有限公司,广西538100

出　　处：《广西农学报》2018年第1期7-12,共6页Journal of Guangxi Agriculture

基　　金：广西科技项目:防城"红姑娘"红薯标准化生产技术示范基地建设示范(编号:2015ED29113)

摘　　要：探讨溶剂提取法提取红薯中不溶性膳食纤维的工艺条件。以液料比、碱液浓度和提取温度作为试验因素,通过单因素试验和Box-Behnken设计试验,对提取工艺条件进行了优化,并在此基础上建立提取动力学模型。结果表明:不溶性膳食纤维提取的最优工艺条件为液料比13.07∶1 m L·g^(-1),碱液浓度8.43 g·L^(-1),提取温度37.14℃,提取率达8.730%。以不同提取温度建立4种提取过程的动力学模型,经拟合模型比较,Logistic模型为最优拟合。This study examined the chemical extraction of insoluble fiber from sweet potato. Single factor method and Box-Behnken experimental design were applied to optimize the extraction process. On this ba-sis,extraction kinetic models were established. The results showed that the optimum technological condi-tions for the extraction of insoluble fiber were liquid ratio： 13. 07 ∶1 mL·g^-1,alkali concentration 8. 43 g·L^-1,extraction temperature 37. 14 ℃,under these conditions,the yield of insoluble fiber was 8. 730%. The kinetic models of 4 kinetic model were established under different concentration of alkali solution,and the Logistic model was the best fit.

关 键 词：红薯 不溶性膳食纤维 提取工艺 动力学模型 

分 类 号：S531[农业科学—作物学]