影像科学与光化学 ›› 2004, Vol. 22 ›› Issue (1): 13-19.DOI: 10.7517/j.issn.1674-0475.2004.01.13

• 研究论文 • 上一篇    下一篇

氯化银T-颗粒乳剂制备专用的氧化明胶的研究

史京京1, 滕淑华1, 吴珊1, 彭必先1, 陈丽娟1, 倪景华2   

  1. 1. 中国科学院, 理化技术研究所, 北京, 100101;
    2. 中国医学科学院, 中国协和医科大学药物研究所, 北京, 100050
  • 收稿日期:2003-07-16 修回日期:2003-11-14 出版日期:2004-01-23 发布日期:2004-01-23
  • 通讯作者: 史京京
  • 基金资助:
    国家自然科学基金资助项目(20243004),并获美国柯达公司资助

A STUDY ON OXIDIZED GELATINS EMPLOYED FOR CHLORIDE-RICH TABULAR GRAIN EMULSIONS

SHI Jing-jing1, TENG Shu-hua1, WU Shan1, PENG Bi-xian1, CHEN Li-juan1, NI Jing-hua2   

  1. 1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, P.R.China;
    2. Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P.R.China
  • Received:2003-07-16 Revised:2003-11-14 Online:2004-01-23 Published:2004-01-23

摘要: 以往的研究表明:低蛋氨酸含量的明胶能制得晶体形态比较高的高氯T-颗粒乳剂.本文用氧化方法进一步降低明胶中的蛋氨酸含量.明胶经氧化剂(H2O2)氧化能得到不同的氧化明胶.用电位法测定氧化明胶的还原性;用氨基酸分析仪测定它们的蛋氨酸含量;用SDS-PAGE电泳法测定它们不同结构的组份含量.结果表明,还原性及蛋氨酸含量随氧化剂加入量的多少而变化;但氧化明胶的分子量分布与原胶相比变化甚小.

关键词: 氧化明胶, 蛋氨酸, 组份含量, T-颗粒乳剂

Abstract: The previous study showed that high chloride tabular grain emulsions having higher aspect ratio could be achieved by employing low methionine oxidized gelatins.In this paper the properties and methionine content of oxidized gelatins have been studied.Oxidized gelatins with different methionine content were prepared through oxidizing inert gelatins with H2O2.The reducing power of oxidized gelatins was tested by potential titration method,the methionine content was evaluated with L-8500 amino acid analyzer,the molecular weight distribution of the different conformation components was determined with SDS-PAGE method.The results indicated that the methionine content and reducing power varied with the different degree of oxidation,and oxidation had no remarkable influence on the molecular weight distribution of the oxidized gelatins relative to the original gelatin.

Key words: oxidized gelatins, methionine, component content, T-grain emulsions

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