DF T study o f antioxid ant prope rties and the reactivity of O H groups on saffron petals

Reacti ve oxygen and nitroge n radical species ( OH,ROO,NO,... ) present in our bod y are produced by , X -ray and UV radiations. They can potentially damage almost all typ es of biolog ically important molecules like li pids, amino acids, carbohydrates and nucleic acids. Against antioxidants are a gr oup of substances that, when present at low concentratio ns in relatio n to oxidisa ble substrates that hav e to be repaired and red uced, signif icantly inhibit or postpo ne oxidative processes, while often being oxidized themselves.Among the natur al the phenolic antioxida nts, the flav onoid family is the most important class. It has been reported the sca venging act ivity of phenolic antiox idant is related to the bond dissociation enthalphy (BDE) of the O-H groups pres ent in the structure.Saffron petals are a rich source of kaempferol flavonoid.

کلیدواژه ها:

DFT ، Antioxidant ، Kaempferol ، BDE.