影像科学与光化学 ›› 1993, Vol. 11 ›› Issue (2): 40-44.DOI: 10.7517/j.issn.1674-0475.1993.02.40

• 研究论文 • 上一篇    下一篇

明胶大分子的照相性质研究——Ⅰ.明胶中的蛋氨酸砜及亚砜的测定

李迅1, 彭必先1, 肖玉霞2, 倪景华2   

  1. 1. 中国科学院感光化学研究所, 北京 100101;
    2. 中国医学科学院药物研究所, 北京 100050
  • 收稿日期:1992-04-30 修回日期:1992-12-10 出版日期:1993-05-20 发布日期:1993-05-20
  • 通讯作者: 彭必先

STUDY OF PHOTOGRAPHIC PROPERTY OF GELATIN MACROMOLECULE Ⅰ. THE DETERMINATION OF METHIONINE SULFONE AND SULFOXIDE CONTAINED IN PHOTOGRAPHIC GELATINS

LI XUN1, PENG BI-XIAN1, XIAO YU-XIA2, NI JING-HUA2   

  1. 1. Institute of Photographic Chemistry, Academia Sinica, Beijing 100101, P.R. China;
    2. Institute of Medicine, Academy of Medical Sciences, Beijing 100050, P.R. China
  • Received:1992-04-30 Revised:1992-12-10 Online:1993-05-20 Published:1993-05-20

摘要: 应用氨基酸分析仪对十六种国外明胶(大部分为IAG明胶)的氨基酸含量进行了测定,其中重点进行了蛋氨酸及其氧化产物含量的测定。测试结果表明:明胶中蛋氨酸含量随不同样品变化较大,亚砜含量一般较少,所有照相胶都含有砜,绝大多数胶样含有亚砜。

关键词: 明胶, 氨基酸, 蛋氨酸(Met), 蛋氨酸砜(Metson), 蛋氨酸亚砜(Metsox)

Abstract: Considering the great influence of methionine on the reducing capacity of gelatin it is of great importance to simultaneously determine the oxidized forms of Met(Metsox and Metson) contained in photographic gelatins. In present study, the complete analysis of amino acids, including Methioine, Methionine Sulfone and Sulfoxide contained in a range of gelatins, was performed with a Hitachi L-8500 Amino Acid Analyzer. Special attention had been paid to improve the test reproducibility and accuracy of this simultaneous determination method.It was shown that the Met contents are varied from sample to sample. Till now, almost all the gelatin samples contain Metson, and Metsox is found only in some of the samples involved.

Key words: gelatin, amino acid, methionine, sulfone, sulfoxide