食品科学 ›› 2006, Vol. 27 ›› Issue (9): 197-199.

• 分析检测 • 上一篇    下一篇

固相萃取和高效液相色谱法测定甜茶中的黄酮类物质

 杨亚玲,  赵红芳,  苏毅,  赵榆林,  周强   

  1. 昆明理工大学生物与化学工程学院
  • 出版日期:2006-09-15 发布日期:2011-10-20

Study on Flavonoid Assay in Lithhocarpus polgstachrch Rehd with Solid Phase Extraction and HPLC

 YANG  Ya-Ling,   Zhao-Hong-Fang,   Su-Yi,   Zhao-Yu-Lin,   Zhou-Qiang   

  1. Faculty of Biologic and Chemical Engineering, Kunming University Science of Technology, Kunming 650224, China
  • Online:2006-09-15 Published:2011-10-20

摘要: 研究了用固相萃取预分离,高效液相色谱法测定甜茶中黄酮类物质的方法。甜茶中的黄酮用80%乙醇溶液回流提取,提取液用WatersSep-Pak-C18固相萃取小柱预分离脱脂,以WatersNova-Pak-C18(3.9×150mm,5μm)色谱柱为固定相,以0.05mol/L磷酸二氢钾缓冲溶液和甲醇的比例为40:60(V/V)为流动相,在该色谱条件下,甜茶中主要的黄酮成分均达到基线分离;用紫外二极管矩阵检测器在360nm波长处检测,并作了色谱峰纯度分辨。方法标准回收率为97%~103%,相对标准偏差为0.87%~2.2%。

关键词: 高效液相色谱, 固相萃取, 甜茶, 黄酮

Abstract: A high performance liquid chromatography (HPLC) method for the flavonoid assay in Lithhocarpus polgstachrch Rehd was studied. The flavonoid was extracted from the sample with 80% of ethanol by heated reflux. Then the extract was degreased by solid phase extraction with Sep-Pak-C18 cartridge. The flavonoid was separated on a Nova-Pak-C18 chromatogram column (3.9×150mm, 5μm), with methanol and 0.05mol/L potassium dihydrogen phosphate buffer solution as mobile phase at 60:40 (V/V), and monitored with the photodiode array detector at 360nm. The recoveries of the flavonoid are 97%~103%, and relative standard deviations are 0.87%~2.2%.

Key words: HPLC, solid phase extraction, Lithhocarpus polgstachrch rehd, flavonoid