Interaction of Phthalocyanine with Egg albumin and Bovine serum albumin

محورهای موضوعی : Journal of Physical & Theoretical Chemistry

K. Zare ¹ , H. Aghaie ² , M. Mirzaie ³

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تاریخ دریافت : 1394/02/05 تاریخ پذیرش : 1394/02/05 تاریخ انتشار : 1386/08/10

کلید واژه: BSA, Egg albumin, Phthalocyanine, SQUAD, Formation constants,

چکیده مقاله :

The interaction of bovine serum albumin ( BSA) and egg albumin with water solublephthalocyanine, cobalt (ΙΙ) 4, 4′ , 4′′, 4′′′- tetrasulfophthalocyanine ( CoTSPc) , has been studiedby the UV- Vis method at pH 7.0 and five different temperatures 20, 25, 30, 35 and 40°C. Theformation constants have been elucidated by using spectrophotometric titration and computerSQUAD program data refinement. The thermodynamic parameters ΔH°, ΔG°and ΔS° at 5 differenttemperatures were calculated. The results showed that the best fitting corresponds to a 1: 1complex model between BSA and egg albumin with CoTSPc. Formation constants decrease withincreasing temperature.The formation constants showed that bonding effect between egg albuminand CoTSPc is stronger than BSA.