Quality Study on the Pharmacodynamic Components of Different Parts of Valeriana Officinalis
Study on the quality standard of Valerian tongren.Methods:The content of total flavonoids in Valerian was determined by UV-VIS spectrophotometry at 500nm wavelength.Results The regression equation of standard curve was y=10.6736x+0.0024(r=0.999935,n=5).The results showed that there was a good linear relationship between the injection amount of rutin and absorbance in the range of 0.008～0.056 mg.Precision test,RSD=0.0011％(n=5),indicating good precision;The results showed that RSD=0.0026％(n=6),indicating that the solution had good stability within 120 min.The results showed that the average mass fraction of rutin in the samples was 0.71％,RSD=0.13％(n=6),indicating that the method had good repeatability.The recovery rate was 1.66％(n=6).Conclusions:This method can accurately reflect the content of total flavonoids in different parts of Valerian.As a reference,only when the average mass fraction of rutin in the leaves,stems and roots of Valerian is above 11.59％,0.98％and 0.71％,respectively,can the quality requirements of Valerian.This study not only realized full utilization of resources,but also provided a certain reference value for the quality standard of Valerian tongren.
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