Determination of Total Flavone Content in Roudoukou Bawei Capsules by Colorimetry
Objective To determine the total flavone content in Roudoukou Bawei Capsules by colorimetry. Methods With rutin as the reference substance,after coloration by sodium nitrite-aluminum nitrate-sodium hydroxide,the total flavone content in the sample was determined at the wavelength of 504 nm. Results The total flavone contents in 3 batches of of Roudoukou Bawei Capsules were 21. 15,20. 58,20. 43 mg/g respectively. The average recovery rate was 98. 42%,RSD was 1. 13%( n=6). Conclusion This method is convenient,simple and reproducible,which can be used as the quality control method of Roudoukou Bawei Capsules.