华南理工大学学报(自然科学版) ›› 2018, Vol. 46 ›› Issue (7): 47-53,145.doi: 10.3969/j.issn.1000-565X.2018.07.007

• 化学化工 • 上一篇    下一篇

核桃青皮中单宁的微波辅助提取工艺

章莉娟1,钟曼丽1,黄跃龙2,徐建人2   

  1. 1. 华南理工大学 化学与化工学院,广东 广州,510640; 2. 广州骄子日化有限公司,广东 广州,510400
  • 收稿日期:2017-06-15 修回日期:2018-01-18 出版日期:2018-07-25 发布日期:2018-06-01
  • 通信作者: 章莉娟( 1966-) ,女,博士,教授,主要从事化学产品工程基础理论和技术开发研究 E-mail:celjzh@scut.edu.cn
  • 作者简介:章莉娟( 1966-) ,女,博士,教授,主要从事化学产品工程基础理论和技术开发研究
  • 基金资助:
    国家自然科学基金资助项目( 91434125)

Microwave-Assisted Extraction Process of Tannins from Walnut Green Husk

 ZHANG Lijuan1 ZHONG Manli 1 HUANG Yuelong2 XU Jianren2   

  1. 1. School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China; 2. Guangzhou Jiao Zi Daily Chemical Co. ,Ltd. ,Guangzhou 510400,Guangdong,China
  • Received:2017-06-15 Revised:2018-01-18 Online:2018-07-25 Published:2018-06-01
  • Contact: 章莉娟( 1966-) ,女,博士,教授,主要从事化学产品工程基础理论和技术开发研究 E-mail:celjzh@scut.edu.cn
  • About author:章莉娟( 1966-) ,女,博士,教授,主要从事化学产品工程基础理论和技术开发研究
  • Supported by:
     Supported by the National Natural Science Foundation of China ( 91434125)

摘要: 对核桃青皮中天然色素的提取不仅能开发其应用价值,还能减少对环境的污染. 核桃青皮色素的主要成分是单宁,采用微波辅助乙醇法提取核桃青皮中的单宁. 首先研究 了料液比、乙醇体积分数、提取反应温度、提取反应时间、微波功率对单宁提取率的影响, 然后通过响应面法优化对提取工艺进行优化,优化得到的最佳工艺条件为: 乙醇体积分数 45% 、料液比 1∶ 20 ( g /mL) 、反应温度 61 ℃、微波功率 612 W、反应时间 10 min,此条件下 核桃青皮中单宁提取率为 20. 36 mg /g. 研究结果为核桃青皮中单宁的提取提供基础数据 和理论指导.

关键词: 核桃青皮色素, 单宁, 微波辅助, 乙醇, 响应面法, 提取率

Abstract: The extraction of natural pigments from walnut green husks can not only develop its application value but also reduce the environmental pollution. The main component of walnut green husk pigment is tannins. The tannins in walnut green husk are extracted by microwave-assisted ethanol extraction. Firstly,this article studies the effects of solid-liquid ratio,ethanol volume fraction,extraction temperature,extraction time and microwave power on the extraction yield of tannins,and then optimizes the extraction process by response surface methodology ( RSM) . The optimal conditions are: ethanol volume fraction of 45% ,solid-liquid ratio of 1∶ 20 ( g /mL) ,temperature of 61℃,microwave power of 612 W,and a time of 10 min. Under these conditions,the extraction yield of tannins in walnut green husk is 20. 36 mg /g. The results provides the basic data and theoretical guidance for the extraction of tannins from walnut green husk

Key words: walnut green husk pigment, tannins, microwave-assisted, ethanol, response surface methodology, yield

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