Study on the antioxidant activity of the Prunus virginiana＇s Diament extracted from leaf and fruit
The pigment of Prunus virginiana was extracted from the fruit and leaf by solvent method. The antioxidant activity of pigment was evaluated by the abilities to scavenge DPPH free radicaI,ABTS＋ free radical,Hydroxyl free radical and the total reduction capacity,and compared with that of Vc. The result ：showed that,when the mass concentration was less than 0.15mg/mL,the pigment of Prunus virginiana leaf showed a stronger capacity to scavenge DPPH free radical than the pigment of fruit,and when the mass concentration was greater than 0.15mg/mL,the pigment of Prunus virginiana leaf showed a weaker capacity to scavenge DPPH free radical than the pigment of fruit. In any concentration,the pigment of Prunus virginiana leaf showed a stronger capacity to scavenge ABTS ＋ free radical and Hydroxyl free radical than the pigment of fruit. The antioxidant activity of the pigment of leaf and fruit increased as well as the concentration. The pigment of Prunus virginiana leaf showed a stronger reducing capacity than the pigment of fruit,at tlqe mass concentration of 0.2mg/mL,the reducing capacity of the pigment of Prunus virginiana leaf was 3 times of Vc and 6 times of the pigment of fruit.
国家科技期刊平台
NSTL
万方数据
维普
