cqvip:[Objectives]To optimize the extraction process of antioxidant active components from seeds of Firmiana platanifolia.[Methods]The seeds of F.platanifolia were taken as the research object.The primary samples of seeds of F.platanifolia were prepared following the procedure of selection,cleaning,shelling,drying and pulverization.TheDPPH·(1,1-diphenyl-2-picrylhydrazyl)scavenging rate of the extract of seeds of F.platanifolia was used as an indicator,to conduct the single factor experiment for determining optimum single factors such as extraction solvent,extraction time,solid-to-liquid ratio,and extraction temperature.Then the experimental design was optimized by the response surface methodology.[Results]Single factor experiment showed that the optimal extraction solvent for the antioxidant active components of F.platanifolia seeds was ethyl acetate,the optimal extraction time was 50 min,the optimum solid-to-liquid ratio was 1∶6 g/mL,and the optimal extraction temperature was 60℃.The response surface optimization experiment showed that the optimal extraction process of the antioxidant active component extract of F.platanifolia seeds was:the extraction solvent was ethyl acetate,the extraction time was 45 min,the solid-to-liquid ratio was 1∶5 g/mL,and the extraction temperature was 55℃,which was basically consistent with the results of single factor experiment.Under the optimal extraction conditions,the DPPH·scavenging rate of ethyl acetate extract(200 mg/mL)of F.platanifolia seeds was 94.25%,which was equivalent to that of vitamin E(V E)solution(147.39 mg/L)dissolved with ethyl acetate.[Conclusions]The ethyl acetate extract of F.platanifolia seeds has a strong antioxidant capacity of eliminating DPPH·in vitro.
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