闪式提取无花果叶总黄酮及其抗氧化活性研究.

The experiment was to study the extraction of total flavonoids from Ficus carica L. leaves by flash and its antioxidant activity. Ficus carica L. leaves were used as raw materials in the experiment, the method of flash extraction was used, ethanol was used as solvent, and the extraction time, ethanol volume fraction and liquid to material ratio were used as single factors to determine the optimal extraction rate of total flavonoids under corresponding conditions. On the basis of single factor experiment, response surface methodology was used to optimize the extraction process. The result showed that the final extraction of process parameters were extraction time 87 s, ethanol concentration 67%, liquid-solid ratio 87 mL/g. Under these conditions, the actual extraction rate was 3.43%, which were consistent basically with their predicted values (3.41%). The total flavones of Ficus carica L. leaves obtained had good scavenging capacity for DPPH free radicals, superoxide anion free radicals and hydroxyl free radicals, and the IC50 values were 0.019, 0.017 and 0.076 g/L, respectively. The study indicates that the Ficus carica L. has good antioxidant capacity in vitro. [ABSTRACT FROM AUTHOR]