回归正交设计优化核桃壳棕色素的提取工艺  

Optimization of Extraction Process for Brown Pigment from Walnut Shell by Orthogonal Regression Design

作　　者：战峰[1] 邵婧[1] 韩泳平[1] 

机构地区：[1]西南民族大学少数民族药物研究所,四川成都610041

出　　处：《食品科学》2011年第16期196-200,共5页Food Science

基　　金：四川省中医药管理局2010-2011年度科技专项(2010-72)

摘　　要：为了提高核桃资源的综合利用程度,对核桃壳棕色素提取技术进行试验研究。以棕色素的提取率为目标,采用单因素试验方法考查乙醇体积分数、提取时间、提取温度、液料比对棕色素提取率的影响,并应用回归正交方法建立三元二次方程优化棕色素的提取工艺。结果表明,核桃壳棕色素适宜的提取条件是乙醇体积分数52%、提取时间4.8h、提取温度70℃、液料比5:1(mL/g),在此条件下,核桃壳棕色素提取率为5.0496%,可用于工业化生产。In order to improve the comprehensive utilization of walnut resource,the extraction of brown pigment from walnut shell was explored.On the basis of one-factor-at-a-time experiments,a three-variable quadratic equation was established by orthogonal regression design to describe the effects of ethanol concentration,temperature,extraction time and material-to-liquid ratio on the extraction rate of brown pigment.Through resolving the equation,the optimal conditions for extracting brown pigment from walnut shell were identified to be ethanol concentration of 52%,extraction time of 4.8 h,extraction temperature of 70 ℃,and material-to-liquid ratio of 1：5.Under the optimal conditions,the extraction rate of brown pigment was 5.0496%.

关 键 词：核桃壳 棕色素 提取工艺 回归正交试验 

分 类 号：TS202.3[轻工技术与工程—食品科学]