食品科学

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响应面试验优化碱溶酸沉法提取山药储藏蛋白工艺

赵 月1,2,高 琦3,王晓文2,贾有峰2,张俊伟2,艾辛梓2,薛友林2,*   

  1. 1.辽宁大学生命科学院,辽宁 沈阳 110036;2.辽宁大学轻型产业学院,辽宁 沈阳 110036;
    3.辽宁行政学院,辽宁 沈阳 110161
  • 出版日期:2015-08-25 发布日期:2015-08-17
  • 通讯作者: 薛友林
  • 基金资助:

    国家自然科学基金青年科学基金项目(31201285);教育部留学回国人员科研启动基金项目(教外司留2013693);
    辽宁省教育厅科学研究一般项目(L2014009);
    辽宁大学大学生创新创业训练计划项目(201410140000010;X201410140105)

Optimization of Extraction Conditions for Yam Storage Proteins through Alkali-Extraction and Acid-Precipitation by Response Surface Methodology

ZHAO Yue1,2, GAO Qi3, WANG Xiaowen2, JIA Youfeng2, ZHANG Junwei2, AI Xinzi2, XUE Youlin2,*   

  1. 1. College of Life Science, Liaoning University, Shenyang 110036, China; 2. College of Light Industry, Liaoning University,
    Shenyang 110036, China; 3. Liaoning Administrative College, Shenyang 110161, China
  • Online:2015-08-25 Published:2015-08-17
  • Contact: 薛友林

摘要:

以河南焦作白玉山药为原材料,在单因素试验的基础上,采用响应面法中的Box-Behnken试验设计,对影响山药储藏蛋白提取率的3 个影响因素即抽提pH值、液料比和抽提时间进行优化。结果表明:各因素对山药储藏蛋白提取率有显著影响,因素影响主次顺序为:抽提pH值>液料比>抽提时间,提取山药储藏蛋白的最佳工艺条件为抽提pH 8.5、液料比3∶1(mL/g)、抽提时间20 min,在此条件下山药储藏蛋白提取率的最大理论值为57.88%,实际蛋白提取率为57.74%。所得山药储藏蛋白提取回归模型显著,拟合性好,可用于预测山药储藏蛋白提取率。

关键词: 山药储藏蛋白, 响应面法, 提取工艺, 优化

Abstract:

The extraction of storage proteins from ‘Baiyu’ yam tubers grown in Jiaozuo, Henan province was optimized
using combination of one-factor-at-a-time method, Box-Behnken design (BBD) and response surface methodology (RSM).
Three factors influencing the extraction yield of yam storage proteins, i.e., pH, liquid/material ratio and extraction time
were investigated. The results showed that all these three factors had a notable effect on the extraction yield of yam storage
proteins and their significance could be ranked in a decreasing order of pH > liquid/material ratio > extraction time. The
optimal extraction conditions were determined as 8.5, 3:1 (mL/g) and 20 min for pH, liquid/material ratio and extraction
time, respectively. The predicted extraction yield of yam storage proteins under the optimized conditions was 57.88%,
agreeing with the experimental value (57.74%). The regression model predicting the extraction of yam storage proteins was
highly significant and had excellent goodness of fit, suggesting its usefulness.

Key words: yam storage proteins, response surface methodology, extraction process, optimization

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