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摘要
With the Carya cathayensis Sarg. produced in Lin'an, Zhejiang Province as the research object, this paper determined the content of the total flavonoids and the total phenolic in the Carya cathayensis Sarg. extracts of epicarp (CCEE). Carya cathayensis Sarg. extracts of leaf (CCEL) and the Carya cathayensis Sarg. extracts of tegument (CCET). On this basis, we also researched the ethanol extracts in different part of the Carya cathayensis Sarg., 20 % methanol enrichment fraction of Carya cathayensis Sarg. extracts of epicarp (20 % MEF-CSEE), 40% methanol enrichment fraction of Carya cathayensis Sarg. extracts of epicarp (40 %MEF-CSEE), 60% methanol enrichment fraction of Carya cathayensis Sarg. extracts of epicarp (60 % MEF-CSEE) on DPPH radicals scavenging effect. The experiment result shows that the different part of the Carya cathayensis Sarg. all contain the flavonoids and the phenolic component, among which the 40 To MEF-CSEE contains the highest amount of total phenolics, the 20 % MEF-CSEE contains the highest amount of total flavonoids. Through the research of antioxidant activity we know that all the parts of the ethanol extracts in the Carya cathayensis Sarg. have the effect of scavenging free radicals, among which the antioxidant activity in the 40 % MEF-CSEE part is the strongest. Here, the main components of antioxidant activity should be the flavonoids and the phenolic components and we further know that there is a direct relationship between contents of the flavonoids and the phenolic and the antioxidant activity. The exocarp of Carya cathayensis Sarg is a under utilized resource. It might be considered as a potential plant source of antioxidants. The experiment result provided a scientific basis for the further development of its medical effects and the research for the Carya cathayensis Sarg. epicarp, its leaf and the tegument.
