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Citation: Tang Shi-Hua, Huang Jian-Bin. Study on Interactions of Gelatin with Cu^2＋ and Fe^3＋[J]. Acta Physico-Chimica Sinica, ;2001, 17(10): 873-878. doi: 10.3866/PKU.WHXB20011003 shu

Study on Interactions of Gelatin with Cu^2＋ and Fe^3＋

1.
Institute of Physical Chemistry, Peking University, Beijing　100871

Received Date: 21 February 2001
Available Online: 15 October 2001

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＋.
- Gelatin;Influence of metal ions;Fluorescence quenching;Chelates gelatin with Cu^2＋ and Fe^3＋
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Study on Interactions of Gelatin with Cu^2＋ and Fe^3＋