Determination of Total Flavonoids in Commercially Available Exocarpium Citri Grandis
(Objective)A preliminary study on the quantitative determination of total flavonoids of commercial Exocarpium Citri Grandis in the market of Guangzhou circulation area,which provide a easy basis on the quality investigation of Exocarpium Citri Grandis sold as commercial me-dicinal materials.(Methods)Using the ultraviolet spectrophotometry with the detective wave length set at 283 nm.Naringin was served as a ref-erence standard.(Results)With methanol as solvent extraction,ultrasonic 40 minutes of preparation and ultraviolet detection,there was signifi-cant difference in the content of total flavonoid of each sample.(Conclusion)The contents of total flavonoid of sample sold on market had quality problem,which provided a reference for quality investigation of Exocarpium Citri Grandis.