食品科学

• 工艺技术 • 上一篇    下一篇

负压空化法提取银杏叶中原花青素及其分离纯化

王燕芹,徐 莉,曹福亮,王未凡,赵俸艺,杨世龙,雷 萌,陈 泳,唐 颖,蒋国斌,汪贵斌   

  1. 1.南京林业大学理学院,江苏 南京 210037;2.南京林业大学现代分析测试中心,江苏 南京 210037;
    3.南京林业大学森林资源与环境学院,江苏 南京 210037
  • 出版日期:2013-12-25 发布日期:2014-01-03

Negative Pressure Cavitation-Assisted Extraction and Purification of Proanthocyaidins from Ginkgo biloba Leaves

WANG Yan-qin,XU Li,CAO Fu-liang,WANG Wei-fan,ZHAO Feng-yi,YANG Shi-long,LEI Meng   

  1. 1. College of Science, Nanjing Forestry University, Nanjing 210037, China;
    2. Advanced Analysis and Testing Center, Nanjing Forestry University, Nanjing 210037, China;
    3. College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China
  • Online:2013-12-25 Published:2014-01-03

摘要:

采用负压空化法研究银杏叶中原花青素的提取工艺。单因素试验考察提取压力、乙醇体积分数、料液比、提取时间、提取次数对原花青素提取率的影响。利用响应面分析法优化负压空化法提取银杏叶中原花青素的工艺条件。结果表明:提取压力-0.05MPa、料液比1:10.1(g/mL)、乙醇体积分数50%时,原花青素的提取率可达5.54%。采用大孔树脂法对原花青素粗提液进行分离纯化,通过静态吸附和动态解吸实验筛选出AB-8大孔树脂具有最佳效果,在30℃条件下吸附10h,吸附量为8.74mg/g,用无水乙醇以2mL/min的流速进行洗脱时,AB-8对原花青素的解吸率为80.5%。

关键词: 银杏叶, 原花青素, 负压空化, 提取, 纯化

Abstract:

This study dealt with the optimization of negative pressure cavitation-assisted extraction of proanthocyandins
from Ginkgo biloba leaves. Using the extraction efficiency of proanthocyandins as the response value, response surface
and contour plots were drawn, and the optimum extraction conditions were determined as follows: extraction pressure of
-0.05 MPa, solid-to-liquid ratio of 1:10.1 (g/mL) and ethanol concentraction of 50%. Under these extraction conditions, the
extraction efficiency of proanthocyandins was 5.54%. The crude extract of proanthocyanidins was purified with macroporous
adsorption resin. Our static adsorption and dynamic desorption experiments indicated that AB-8 was the best resin for
proanthocyandin purification, and the optimum chromatographic conditions were found as follows: 10 h adsorption at 30 ℃,
resulting in an adsorption quantity of 8.74 mg/g, and desorption with absolute ethanol at a flow rate of 2 mL/min, providing
a desorption efficiency of 80.5%.

Key words: Ginkgo biloba leaves, proanthocyaidin, negative pressure cavitation, extraction, purification