食品科学 ›› 2010, Vol. 31 ›› Issue (4): 53-58.doi: 10.7506/spkx1002-6300-201004012

• 工艺技术 • 上一篇    下一篇

金花茶叶多糖超声波辅助提取工艺和含量测定

许子竞,廖敏富,陈海燕,江 燕,林翠梧*   

  1. 广西大学化学化工学院
  • 收稿日期:2009-02-09 出版日期:2010-02-15 发布日期:2010-12-29
  • 通讯作者: 许子竞 E-mail:xuzj227@163.com
  • 基金资助:

    广西科技攻关项目(桂科攻0480005);广西大学科学技术研究重点基金项目(2003ZD05)

Camellia chrysantha (Hu) Tuyama Leaves: Optimization of Ultrasonic-assisted Extraction and Methodological Evaluation of Phenol-Sulfuric Acid Determination of Polysaccharide

XU Zi-jing,LIAO Min-fu,CHEN Hai-yan,JIANG Yan,LIN Cui-wu*   

  1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
  • Received:2009-02-09 Online:2010-02-15 Published:2010-12-29
  • Contact: XU Zi-jing E-mail:xuzj227@163.com

摘要:

采用超声波辅助提取金花茶叶多糖(PCCT),在单因素试验的基础上,采用响应面分析法对PCCT 提取工艺进行优化研究,以多糖提取率为考察指标,使用苯酚- 硫酸法测定PCCT 含量。结果表明,最佳提取工艺条件为水料比46:1(mL/g)、温度87℃、提取时间54min、共提3 次,测得PCCT 的提取率4.39%,鲜叶PCCT 含量66.8mg/g。

关键词: 金花茶叶多糖, 提取, 响应面分析, 含量测定

Abstract:

Optimal ultrasonic-assisted extraction of polysaccharide from Camellia chrysantha (Hu) Tuyama leaves (PCCT) was investigated by single factor method and central composite design coupled with response surface methodology. In addition, a methodological evaluation was conducted for phenol-sulfuric acid determination of polysaccharide. Results showed that the optimal PCCT extraction conditions were as follows: 87 ℃ and water/material ratio 46:1 for a triplicate extraction duration of 54 min each time. Under such conditions, PCCT yield was up to 4.39%. Methodological evaluation demonstrated high precision, good repeatability and less error of developed phenol-sulfuric acid method for polysaccharide determination. Fresh Camellia chrysantha (Hu) Tuyama leaves was determined to contain 66.8 mg/g dry weight of polysaccharide by the method.

Key words: Camellia chrysantha (Hu) Tuyama leaves, polysaccharide (PCCT), extraction, response surface analysis (RSA), content determination

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