Study on interactions of gelatin with Cu2+ and Fe3+

被引：10
|
作者：
Tang, SH [1 ]
Huang, JB [1 ]
机构：
[1] Peking Univ, Inst Phys Chem, Beijing 100871, Peoples R China
来源：
ACTA PHYSICO-CHIMICA SINICA | 2001年 / 17卷 / 10期
关键词：
gelatin; influence of metal ions; fluorescence quenching; chelates gelatin with; Cu2+ and Fe3+;
D O I：
10.3866/PKU.WHXB20011003
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Interaction of the gelatin with Cu2+ and Fe3+ are investiged at different pH and temperatures by fluorescence quenching method. The mechanisms of fluorescence quenching of Cu2+ and Fe3+ to gelatin are studied at different pH. The quenching constants, binding constants, and the thermodynamic functions are calculated. The results of micro-IR and UV show that Cu2+ and Fe3+ interacte with the amido bond in the gelatin molecule. The entropy change is a main factor in the interaction process of the gelatin with Cu2+ and Fe3+.
引用
收藏
页码：873 / 878
页数：6
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