食品科学 ›› 2004, Vol. 25 ›› Issue (3): 145-147.

• 分析检测 • 上一篇    下一篇

超临界流体色谱测定牛奶中乳清酸的含量

 郭亚东, 马银海, 李璠, 张艳   

  1. 昆明医学院药学院,昆明师范专科学校,红河州卫校
  • 出版日期:2004-03-15 发布日期:2011-10-24

Determination of Orotic Acid in Cow Milk by Supercritical Fluid Chromatography

 GUO  Ya-Dong, MA  Yin-Hai, LI  Fan, ZHANG  Yan   

  1. 1.Kunming Medical College;2. Kunming Teachers College;3. Honghe Health School
  • Online:2004-03-15 Published:2011-10-24

摘要: 使用超临界流体色谱测定牛奶中乳清酸含量,在二氧化碳流动相中添加20%的甲醇及0.25%三氟乙酸作改性剂,于填充柱上分离,检测波长为280nm,在测定范围内,对照品浓度与峰面积呈良好的线性关系(r=0.9991)。以峰面积和保留时间计算精密度分别为2.33%和0.47%。回收率为101.9%±1.92%,3min即可完成色谱分析,样品前处理简单,可用于牛奶中乳清酸的快速测定。

关键词: 牛奶, 乳清酸, 超临界流体色谱, 含量测定

Abstract: A rapid SFC method for determination of orotic acid in cow milk is described. The mobile phase was a mixture of CO2and methanol (contained 0.25% TFAA) at a rate of 2.0ml/min,and a packed column was used. The UV detector was at awavelength of 280nm.The calibration curve was linear in the range of determination(r=0.9991). The RSD of peak area andretention time were 2.33% and 0.47% respectively. The recovery was 101.9%±0.92%. The analysis was completed within 3minutes. The method was simple and it was easy for handling sample. It could be used in rapid analysis.

Key words: cow milk, orotic acid, SFC, determination