响应面法优化马铃薯氧化淀粉水解液的脱色工艺  

Optimization of Decoloring Technique of Potato Oxidized Starch Hydrolysate by Response Surface Analysis

作　　者：卢瑞 李祥[1] 郑少芳 蔺旺梅 抗新新 LU Rui, LI Xiang, ZHENG Shaofang, LIN Wangmei, KANG Xinxin(College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology,Xi＇ an 71002)

机构地区：[1]陕西科技大学化学与化工学院,西安710021

出　　处：《食品工业》2018年第10期110-115,共6页The Food Industry

基　　金：陕西省榆林市科技项目(2016-15-4);西安市科技局项目(CXY1434(2))

摘　　要：研究了活性炭对马铃薯氧化淀粉水解液脱色的工艺。通过单因素试验考察活性炭用量、脱色温度、脱色p H、脱色时间对脱色率和葡萄糖醛酸保留率的影响。在此基础上,采用Box-Behnken响应曲面法设计并建立各因素分别与脱色率、葡萄糖醛酸保留率之间关系的数学模型。结果表明,活性炭脱色的最佳工艺条件为:活性炭用量0.6%,脱色温度40℃, pH 4.0,脱色时间40 min。在此优化条件下,测得脱色率为77.79%,葡萄糖醛酸保留率为89.09%。验证值与模型预测值接近,表明该模型具有良好的预测性能,该优化工艺具有可行性。The decoloring technique of potato oxidized starch hydrolysate by active carbon was studied. The effects of active carbon addition, decolorization temperature, pH and decoloration time on decolorization rate and retention rate of glucuronic acid were studied by single test. Based on single factor experiments, the mathematical model of the relationship between the factors and the rate of decoloration and the retention of glucuronic acid was established and analyzed respectively by Box-Behnken response surface design method. The optimal conditions for active carbon treatment were determined to be decolorization at 40℃ for 40 min with the addition of 0.6% of active carbon adjusted to pH 4.0, under such condition, the decolorization rate of 77.79% and glucuronic acid retention rate of 89.09% were obtained. The validation value was close to the model predicted value, showing that the model had good prediction performance and the optimization process is feasible.

关 键 词：水解液 活性炭 脱色 响应面法 

分 类 号：TS234[轻工技术与工程—粮食、油脂及植物蛋白工程]