Optimization of Extraction Process of Flavonoids from Beetroot and Its Effect on Anti-Exercise Fatigue
Through single factor test and response surface analysis,the effects of solid-liquid ratio,ethanol volume fraction and ultrasonic time on the yield of beetroot flavonoid were studied.The anti-exercise fatigue activities of different concentrations of beetroot flavonoid extract were compared by exhaustion swimming fatigue model in mice.The results showed that when the ratio of solid to liquid was 1∶40(g/mL),the volume fraction of ethanol was 60％and the extraction time was 60 min,the flavonoid yield of beetroot reached 3.34％.The anti-exercise fatigue test showed that compared with the blank control group,the administration of 50-200 mg/kg beetroot flavone had no effect on the growth weight of mice,and with the increase of the gavage dose,the exhaustive exercise time of mice was significantly prolonged in a dose-dependent manner.
万方数据
维普
