YIN Li, GUO Xiao-hui. Optimization of Flavonoid Extraction Technology of Orthogonal from Ginkgo Folium and its Antioxidation Ability[J]. Chinese journal of experimental traditional medical formulae, 2013, 19(18): 260-262.
YIN Li, GUO Xiao-hui. Optimization of Flavonoid Extraction Technology of Orthogonal from Ginkgo Folium and its Antioxidation Ability[J]. Chinese journal of experimental traditional medical formulae, 2013, 19(18): 260-262. DOI: 10.11653/syfj2013180260.
Objective: To define the optimum flavonoid extract program from Ginkgo Folium leaf and its antioxidant activity. Method: Orthogonal experiment was applied to define the optimum extract program. The ability of oxygen radical absorbance capacity was determined by 2
2-diphenyl-1-picrylhydrazyl(DPPH·)method
Total antioxidant capacity was evaluated by Ferric reducing antioxidant power (FRAP) value. Inhibition of nitrosation reaction was predicated by the cleaning of nitrite and the blocking rate of nitrosodimethylamine (NDMA). Result: The optimum extraction program (8.65%) could be obtained under the condition of 80 ℃
material ratio 1: 15 by the 75% alcohol for 1 h. The ablility of total antioxidant capacity and DPPH·clearance is enhanced at a dose-dependent manner with the concentration of the extract. Conclusion: The flavonoid extract from Ginkgo Folium have strong antioxidation ability and could block nitrosamine synthetise.