Kinetic Study of Free Radicals Scavenging by Saffron Petal Extracts

الموضوعات :

T. Ardalan ¹ ()
P. Ardalan ² ()
M. M. Heravi ³ ()

تاريخ الإرسال : 01 الإثنين , ربيع الثاني, 1434 تاريخ التأكيد : 20 الإثنين , صفر, 1440 تاريخ الإصدار : 17 السبت , محرم, 1434

الکلمات المفتاحية: DPPH, Antioxidant, Kinetic study, saffron petal,

ملخص المقالة :

Saffron petal is the main by-product of saffron processing which is produced in large amounts, annually. The objectives of this study were to study the antioxidant activity and free radical-scavenging effects of saffron petal extracts. The ability of saffron petal to act as an antioxidant using the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free-radical method was investigated by applying the Uv–Vis spectrometry. The Uv–Vis spectra of reaction mixtures in acetonitrile revealed that saffron petal has a considerable effect on scavenging free radical. Kinetic studies were conducted by measuring the disappearance of DPPH in acetonitrile over the wavelength range of 515-522 nm under pseudo-first-order conditions at 37oC. Furthermore, the pseudo first order rate constants were determined

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