高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (2): 221.

• 研究简报 • 上一篇    下一篇

硝基磺酚C光度法测定蛋白质的研究

胡秋娈, 李娜, 赵凤林, 李克安   

  1. 北京大学化学与分子工程学院, 北京 100871
  • 收稿日期:1998-04-24 出版日期:1999-02-24 发布日期:1999-02-24
  • 通讯作者: 李克安
  • 作者简介:胡秋娈,女,45岁,副教授,现在洛阳师专化学系,访问学者.
  • 基金资助:

    国家自然科学基金(批准号:29392601)

Spectrophotometric Determination of Proteins by Using Nitrosulfophenol C

HU Qiu-Luan, LI Na, ZHAO Feng-Lin, LI Ke-An   

  1. College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871
  • Received:1998-04-24 Online:1999-02-24 Published:1999-02-24

摘要: 蛋白质的定量分析是生化研究、临床化验和食品检验等领域经常涉及的内容.以有机小分子作光谱探针测定蛋白质,如甲基橙[1,2]、考马斯亮蓝G-250[3]、溴酚蓝[4]、溴甲酚绿[5]和偶氮胂Ⅲ[6]等已得到研究.

关键词: 蛋白质, 硝基磺酚C, 分光光度法

Abstract: In this paper, it is found firstly that the nitrosulfophenol Ccan react with proteins to for MA pure blue complex in BrittonRobinson buffer solution at pH3.4 and room temperature, which gives maximuMAbsorption peak at 675 nm with 100 nm to red shift compared to that of nitrosulfophenol C. According to studies on optimum conditions, a new spectrophotometric method for determination of proteins was established. The standard working curves of eight kinds of proteins with larger linear ranges and higher sensitivity were determined. The new method was successfully applied to the determination of protein in human serum samples with satisfactory results in agreement with those of the classical coomassie brilliant blue G-250(CBB G-250) method.

Key words: Proteins, Nitrosulfophenol C, Spectrophotometry

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