食品科学

• 工艺技术 • 上一篇    下一篇

响应面试验优化果胶酶辅助提取锁阳原花青素工艺

崔 玮,张 勇,高海宁,焦 杨,李彩霞   

  1. 1.河西学院农业与生物技术学院,甘肃 张掖 734000;
    2.甘肃省高校河西走廊特色资源利用省级重点实验室,甘肃 张掖 734000
  • 出版日期:2016-07-25 发布日期:2016-07-26
  • 通讯作者: 李彩霞
  • 基金资助:

    国家中医药管理局2012年中医药行业科研专项(201207002)

Optimization of Pectinase-Assisted Extraction of Proanthocyanidin from Cynomorium songaricum Rupr. Using Response Surface Methodology

CUI Wei, ZHANG Yong, GAO Haining, JIAO Yang, LI Caixia   

  1. 1. College of Agriculture and Biotechnology, Hexi University, Zhangye 734000, China;
    2. Key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities, Zhangye 734000, China
  • Online:2016-07-25 Published:2016-07-26
  • Contact: LI Caixia

摘要:

利用单因素试验和响应面法优化果胶酶辅助乙醇提取锁阳原花青素工艺。通过单因素试验筛选出酶解时间、pH值、酶解温度、乙醇体积分数作为影响因素,以锁阳原花青素提取得率为响应值进行Box-Behnken试验设计,建立锁阳原花青素提取得率的二次回归方程,得到最优提取条件。响应面法分析结果表明锁阳原花青素的最佳提取工艺参数为:在果胶酶质量分数为1%时,酶解时间34 min、pH 4.8、酶解温度52 ℃、用体积分数70%乙醇溶液浸提1.5 h。该条件下,锁阳原花青素提取率达14.30%。

关键词: 锁阳, 果胶酶, 原花青素, 响应面法

Abstract:

Purpose: To optimize the pectinase-assisted extraction of proanthocyanidins (PC) from the stems of
Cynomorium songaricum Rupr.. Methods: Pectinase was introduced into the process for improving the extraction efficiency.
The extraction conditions were optimized by using response surface methodology (RSM). Five key factors including
enzyme dosage, hydrolysis duration, pH value, temperature and ethanol concentration were selected by one-factor-at-a-time
experiments. The extraction yield of PC was used as the response. Results: A quadric regression equation for predicting the
extraction yield of PC was established using Box-Behnken design and the extraction conditions were optimized as follows:
hydrolysis for 34 min with 1% pectinase at 52 ℃ and initial pH 4.8 followed by extraction for 1.5 h with 70% ethanol as the
extraction solvent. Under these optimized conditions, the extraction yield of PC reached 14.30%. Conclusion: The optimized
pectinase-assisted extraction method can enhance the extraction efficiency of PC from Cynomorium songaricum Rupr..

Key words: Cynomorium songaricum Rupr., pectinase, proanthocyanidins, response surface methodology

中图分类号: