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| Cooperative antioxidation activity of Pyracantha fortuneana flavonoids extracts and VC |
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| KeyWord:Pyracantha fortuneana flavonoids VC cooperative antioxidation |
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| Abstract: |
| The flavonoids compounds were extracted from Pyracantha fortuneana by ultrasound-assisted ethanol method and purified by D-101 macroporous resin. The inhibitory effects of three kinds of solutions (flavonoids extracts，VC，flavonoids extracts-VC（1∶1） combination solution) on oil oxidation and their scavenging effects on ·OH and O-2·and Fe3+ reducing effect were compared. The results showed that when the mass concentrations were all 0.25 g/L，the protection rates of flavonoids extracts，VC and flavonoids extracts - VC（1∶1） on vegetable oil and animal fat were 93.20%，75.55%，93.62% and 70.20%，60.14%，75.28% respectively. The statistics analysis results indicated that combination solution had cooperatively antioxidant effect on inhibitory of oil oxidation，and its antioxidant activity was superior to that of VC and flavonoids extracts. When the mass concentrations were all 0.65 g/L，the scavenging rates of flavonoids extracts on·OH and O-2· were 22.25% and 26.20% respectively，for the com bination solution，they were 27.61% and 31.02% respectively，which were higher than those of VC；the reducing capacity of VC on Fe3+ was the strongest among the three kinds of solutions. |
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