食品科学 ›› 2009, Vol. 30 ›› Issue (24 ): 279-282.doi: 10.7506/spkx1002-6630-200924060

• 分析检测 • 上一篇    下一篇

甘薯叶绿原酸测定方法的研究

向昌国1,李文芳2,向 宁3,黄芝兰2,雷 勇2   

  1. 1.吉首大学旅游学院 2.吉首大学城乡资源规划学院 3.湖南农业大学食品科学学院
  • 收稿日期:2009-09-09 出版日期:2009-12-15 发布日期:2010-12-29
  • 通讯作者: 向昌国1, E-mail:changguox@yahoo.com.cn

Determination of Chlorogenic Acid in Sweet Potato Leaves

XIANG Chang-guo1,LI Wen-fang2,XIANG Ning3,HUANG Zhi-lan2,LEI Yong2   

  1. 1. College of Tourism, Jishou University, Zhangjiajie 427000, China ;
    2. College of Resources and Planning Sciences, Jishou University, Zhangjiajie 427000, China;
    3. College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
  • Received:2009-09-09 Online:2009-12-15 Published:2010-12-29
  • Contact: XIANG Chang-guo1, E-mail:changguox@yahoo.com.cn

摘要:

用两种展开剂对甘薯叶绿原酸进行层析分离,对正丁醇- 冰乙酸- 水(4:1:1,V/V)和乙酸乙酯- 甲酸- 水(7:2.5:2.5,V/V)的分离效果进行比较,展开剂乙酸乙酯- 甲酸- 水(7:2.5:2.5,V/V)更适合薄层层析法分离甘薯叶中的绿原酸。通过薄层扫描法、紫外分光光度法、高效液相色谱法测定甘薯叶绿原酸的含量为2.67%、3.07%、3.31%;表明高效液相色谱法是测定甘薯叶绿原酸含量的最佳方法。同时,实验证明紫外分光光度法测定数据较为准确,成本低,操作简便,可将该法作普通实验测定用。对高效液相色谱法的稳定性、回收率、精密度进行实验,结果显示待测液稳定性可保持30d 以上,回收率为101.30%,相对标准偏差为1.55%。

关键词: 甘薯叶, 绿原酸, 薄层扫描法, 紫外分光光度法, 高效液相色谱法

Abstract:

Effect of two different developing agents on the separation of chlorogenic acid (CA)was investigated in this paper. The results showed that the composite of ethyl acetate-formic acid-water (7:2.5:2.5, V/V) was suitable for CA separation by TLC. The content of chlorogenic acid determined by TLC, UV and HPLC were 2.67%, 3.07% and 3.31%, respectively, suggesting HPLC was most sensitive. Based on our studies, UV method showed benefits like low cost, simple operation and hence, could be used as generic laboratory tests or normal use. Analysis of stability, recovery and precision of HPLC method indicated that the stability was good and can be maintained above 30 d. The recovery was as high as 101.30% and precision was excellent with the SD less than 1.55%.

Key words: leaves of sweet potatoes, chlorogenic acid, TLC, UV, HPLC

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