食品科学 ›› 2005, Vol. 26 ›› Issue (5): 194-197.

• 分析检测 • 上一篇    下一篇

三波长紫外分光光度法测定红车轴草异黄酮含量的研究

 陈寒青, 金征宇   

  1. 江南大学食品学院
  • 出版日期:2005-05-15 发布日期:2011-09-19

Study on Determination of Trifolium pratense Isoflavones by Three-wavelength UV Spectrophotometry

 CHEN  Han-Qing, JIN  Zheng-Yu   

  1. School of Food Science and Technology, Southern Yangtze University
  • Online:2005-05-15 Published:2011-09-19

摘要: 红车轴草乙醇提取液,颜色较深,背景吸收较大,以一般常用的单波长紫外分光光度法测定红车轴草异黄酮含量时,色素和醇溶性蛋白等杂质干扰严重。本文建立的三波长紫外分光光度法,能有效扣除色素和醇溶性蛋白等杂质的干扰,精密度实验的相对标准偏差为0.85%,平均加样回收率为103.95%,加样回收率的相对标准偏差为1.82%。本方法具有简便、快速、准确等特点。

关键词: 红车轴草异黄酮, 测定, 三波长紫外分光光度法

Abstract: Three-wavelength UV spectrophotometry was established to determine the content of total isoflavones in Trifolium pratense. This method could eliminate interference of pigments and ethanol-soluble proteins in the ethanol extract of Trifolium pratense. The relative standard deviation (RSD) of precision test was 0.85%, the average recovery of adding sample test was 103. 95% and RSD was 1.82%. It was a simple, fast and accurate method for determination of Trifolium pratense isoflavones.

Key words: Trifolium pratense isoflavones, determination, Three-wavelength UV spectrophotometry