应用化学 ›› 1998, Vol. 0 ›› Issue (6): 89-91.

• 研究论文 • 上一篇    下一篇

荧光法研究Ge-132对苯丙氨酸Maillard反应的抑制作用

陈继, 马根祥, 李晓晶, 张树功, 李德谦   

  1. 中国科学院长春应用化学研究所稀土化学与物理开放实验室 长春130022
  • 收稿日期:1998-04-20 修回日期:1998-09-09 出版日期:1998-12-10 发布日期:1998-12-10
  • 基金资助:
    国家自然科学基金(29771028)

Fluorescence Spectrometric Study on the Suppression of Ge-132 on Maillard Reaction of Phenylalanine

Chen Ji, Ma Genxiang, Li Xiaojing, Zhang Shugong, Li Deqian   

  1. Laboratory of RareEarth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1998-04-20 Revised:1998-09-09 Published:1998-12-10 Online:1998-12-10

摘要: 哺乳动物体内氨基酸及蛋白质的非酶糖化反应(Mailard反应)与糖尿病及其并发症的关系已引起广泛关注[1],β-羧乙基锗倍半氧化物(Ge-132)具有预防糖尿病和调节糖代谢的作用[2],研究Ge-132对Maillard反应的抑制作用对于开发防治糖尿病及并发症的有效药物和了解有机锗化合物的生物效应机制有着重要意义.苯丙氨酸是人体重要氨基酸之一,用荧光法研究苯丙氨酸与葡萄糖的Maillard反应还未见报道.本文研究了苯丙氨酸(Phenylalanine, Phe)与葡萄糖在pH 7.4、0.05 mmol/L磷酸盐缓冲溶液中,37℃恒温水浴条件下,Maillard反应产物的荧光特征及不同浓度的Ge-132对它的抑制作用.

关键词: Ge-132, 苯丙氨酸, Mailard反应, 荧光光谱法

Abstract: It has been observed that em of phenylalanine and glycosylated phenylalanine in fluoresce spectra are 281.0 nm and 440 nm, respectively, that permits to investigate the suppression of Ge-132 on the Maillard reaction of phenylalanine without any interference. The result shows that the fluorescence intensity(FI) of glycosylated phenylalanine increases continuously with the decrease of FI of phenylalanine, and Ge-132 exhibits a suppression on the Maillard reaction of phenylalanine up to 42.3%.

Key words: Ge-132, phenyl alanine, Maillard reaction, fluorescence spectrum