食品科学 ›› 2005, Vol. 26 ›› Issue (7): 185-188.

• 分析检测 • 上一篇    下一篇

蒽酮-硫酸法测定茶多糖含量的研究

 王黎明, 夏文水   

  1. 江南大学食品学院
  • 出版日期:2005-07-15 发布日期:2011-09-19

Determination of TPS by Improvement of Anthrone-sulfuric Acid Method

 WANG  Li-Ming, XIA  Wen-Shui   

  1. Food School, Southern Yangtze University
  • Online:2005-07-15 Published:2011-09-19

摘要: 对蒽酮-硫酸法测定茶多糖含量的条件进行了研究。结果表明,蒽酮浓度0.05%,样品溶液与蒽酮-硫酸的比1:4,100℃反应5min后立即于冰水中冷却30min,675nm比色,以半乳糖为标准,可提高茶多糖测定的准确度。平均回收率达94.58%±1.68%,重现性好,RSD为0.548%(n=6)。

关键词: 茶多糖, 蒽酮-硫酸法, 测定条件

Abstract: The procedure of colorimetric analysis of TPS was investigated in this paper. The results showed that the accuracyof determination was largely improved by processing with the following procedure: 4ml of 0.05% anthrone in concentrated sulfuricacid was added to 1ml TPS solution and heated 5min at 100℃. The absorbance was measured at 675nm after cooling for 30min,while galactose was used as the standard. The recovery of the procedure was 94.58%±1.68% and RSD was 0.548%(n=6).

Key words: tea polysaccharide, anthrone-sulfuric method, improvement