食品科学 ›› 2007, Vol. 28 ›› Issue (11): 264-267.

• 工艺技术 • 上一篇    下一篇

加工过程对杜仲雄花茶中绿原酸含量的影响

 白喜婷, 朱文学, 廉小梅, 向进乐, 罗磊   

  1. 河南科技大学食品与生物工程学院; 河南科技大学食品与生物工程学院 河南洛阳471003; 河南洛阳471003;
  • 出版日期:2007-11-15 发布日期:2011-11-22

Effects of Processing Eucommia staminatus Flower Tea on Contents of Chlorogenic Acid

 BAI  Xi-Ting, ZHU  Wen-Xue, LIAN  Xiao-Mei, XIANG  Jin-Le, LUO  Lei   

  1. Food and Bioeningeering College, Henan University of Science and Technology, Luoyang 471003, China
  • Online:2007-11-15 Published:2011-11-22

摘要: 用高效液相色谱法测定杜仲雄花茶在加工过程中绿原酸的含量变化。色谱条件Kromasil-C18色谱柱(4.6mm×250mm,5.0μm);流动相乙腈-0.4%磷酸(8:92);检测波长327nm;流速1.0ml/min;柱温25℃。绿原酸对照品在0.05~0.55μg范围内有良好线性关系。平均回收率为98.95%,RSD为1.61%。提取方法为50%甲醇加热回流30min。该方法准确、简捷,可用于杜仲雄花茶加工过程中绿原酸的含量测定。杜仲雄花茶加工过程中,绿原酸含量损失主要在杀青这道工序上,其他步骤也有损失,但损失不大。

关键词: 杜仲雄花茶, 绿原酸, 高效液相色谱法

Abstract: The changes of chlorogenic acid (CA) of Eucommia staminatus flower tea were determined by HPLC method. Kromasil-C18 was used as stationary phase in high performance liquid chromatograph, where mobile phase was acetonitrile -0.4% phosphate = 8:92 at the flow rate of 1.0 ml/min. The detecting wavelength was 327 nm, and the temperature of column was 25 ℃. The calibration curves were perfect in the range from 0.05μg to 0.55μg. The average reclaim was 98.95%, and the relative standard deviation was 1.61%. The method is simple and sensitive. It can be applied to determination of the contents of CA in processing of Eucommia staminatus flower tea. The method of extraction is hot reflux with 50% carbinol for 30min. The contents of CA are mostly lost in fixing process of Eucommia staminatus flower tea. So are the other processes, but the loss is notg reat.

Key words: Eucommia staminatus flower tea, CA, HPLC