食品科学 ›› 2011, Vol. 32 ›› Issue (16): 196-200.doi: 10.7506/spkx1002-6630-201116041

• 工艺技术 • 上一篇    下一篇

回归正交设计优化棕色素的提取工艺

战 峰,邵 婧,韩泳平*   

  1. 西南民族大学少数民族药物研究所
  • 出版日期:2011-08-25 发布日期:2011-07-26
  • 基金资助:
    四川省中医药管理局2010 — 2011 年度科技专项(2010-72)

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

ZHAN Feng,SHAO Jing,HAN Yong-ping*   

  1. (Ethnic Pharmaceuitical Institute, Southwest University for Nationalities, Chengdu 610041, China)
  • Online:2011-08-25 Published:2011-07-26

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。

关键词: 核桃壳, 棕色素, 提取工艺, 回归正交试验

Abstract: 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%.

Key words: walnut shell, brown pigment, extraction technology, orthogonal regression design

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