食品科学 ›› 2004, Vol. 25 ›› Issue (2): 144-145.

• 分析检测 • 上一篇    下一篇

分光光度法测定显齿蛇葡萄总黄酮含量

 熊皓平, 杨伟丽, 何国庆, 张友胜   

  1. 湖南农业大学食品科技学院,浙江大学生物系统工程与食品科学院,广东省农业科学院蚕业研究所
  • 出版日期:2004-02-15 发布日期:2011-10-24

Determination on Total Flavanoids of Ampelopsis grossedentata by Spectrophotometry

 XIONG  Hao-Ping, YANG  Wei-Li, HE  Guo-Qing, ZHANG  You-Sheng   

  1. 1.College of Food Science and Technology, Wuhan Agricutural University;2.College of Biosystem Engineering and Food Science, Zhejiang University;3.Inistitue of Silkworm, Guangdong Academy of Agricultural Sciences
  • Online:2004-02-15 Published:2011-10-24

摘要: 用95%的乙醇为溶剂连续加热回流浸提显齿蛇葡萄幼嫩茎叶中有效成分,以二氢杨梅素为标样,选择波长294nm,采用三氯化铝分光光度法,建立显齿蛇葡萄总黄酮含量测定方法。实验结果表明:标液浓度在5~50μg/ml范围内,吸光度与浓度呈良好的线性关系,回归方程为A=3.166×10-3X-9.0×10-3,r=0.9999(n=5)。加样平均回收率为98.6%,RSD为2.54%。本法操作简便、快速、准确,可作为该药材质量评价方法。

关键词: 显齿蛇葡萄, 总黄酮, 二氢杨梅素, 分光光度法

Abstract: A method for the determination on total flavanoids of Ampelopsis grossedentata was established: using 95% ethanolby continuous thermal reflux to extract its young shoots, taking dihydromyricetin as standard sample, selecting 294nm wave-length and by AlCl3 spectrometric method. The results showed that the regression equation, within the range of the standard sampleconcentration in 5-50μg/ml, was A=3.166×10-3X-9.0×10-3, with a good linearity(r=0.9999)between the absorbance andconcentration. The average recovery rate was 98.6% and RSD was 2.54% (n=5). The method is simple, rapid and accurate andsuitable for the quality evaluation of Ampelopsis grossedentata.

Key words: Ampelopsis grossedentata, total flavanoids, dihydromyricetin, spectrometric method