食品科学 ›› 2005, Vol. 26 ›› Issue (2): 172-174.

• 分析检测 • 上一篇    下一篇

反相高效液相色谱法分析结构相似酪啡肽

  

  1. 南京农业大学农业部动物生理生化重点开放实验室
  • 出版日期:2005-02-15 发布日期:2011-09-19

Reversed-Phase High Performance Liquid Chromatographic Analysis on Structurally Similar Casomorphins

 ZHANG  Yuan-Shu, ZOU  Si-Xiang   

  1. Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University
  • Online:2005-02-15 Published:2011-09-19

摘要: β-酪啡肽(β-Casomorphinβ-CM)是β-酪蛋白经过酶解所释放的一类小肽,具有类似阿片肽的功能。本研究参考相关肽检测方法,以乙腈:水(3:1)为流动相,内含0.1%三氟乙酸为流动相酸性调节剂,梯度洗脱,反相C8柱分离,215nm紫外检测。结果显示,酪啡肽-7在21.45min出峰,在0.125~1.0mg/ml范围内与峰面积呈良好的线性关系(r=0.9989),β-酪啡肽-7和β-酪啡肽-5纯度和迁移时间的RSD分别为7.29%和5.19%。应用本方法可快速准确分离分析酪啡肽,尤其是结构相似的小分子肽。

关键词: 高效液相色谱, 酪啡肽,

Abstract: Casomorphin is a group of structurally similar small peptides produced by enzyme degradation of β-casein. It has the function similar to opioid. To develop a HPLC method for assaying similar peptides. A acetonitrile-H2O (3:1) was used as mobile phase and 0.1% phosphate acid used as acidic modifier. Gradient elution was adopted with Kromasil C8 column (5μm, 4.6mm×200mm) with ultraviolet detector at 215nm. The retention of β-casomorphin-7 andβ-casomorphin-5 were 21.45min and 11.474 min respectively .And a good linear relationship exited between peak area and casomorphin concentrations ranged from 0.125~1.0mg/ml(r=0.9989). The RSD of purity and migration time of β-casomorphin-7 and β-casomorphin-5 were 7.29% and 5.19% respectively. This method provided a simple and feasible way to analyze casomorphins especially those similar peptides.

Key words: HPLC, casomorphin, peptide