Determination of Total Flavonoids Contents from Guanxinkang Tablet

OBJECTIVE To determine the contents of total flavonoids in Guanxinkang tablet by spectrophotometry.METHODS Taking rutin as the control to make standard curve,the detective wavelength was 510 nm.RESULTS Regression equation was C=-0.001 42+0.855 8A(r=0.999 9).The linear concentration was in the range of 0.075 1-0.600 4 mg for rutin.The average recovery was 99.42%,RSD was 1.64%(n=5).The average contents of total flavonoids from Guanxinkang tablet with different numbers was 0.363 1 mg.CONCLUSION The method is simple and accurate,it can be used for quality control of Guanxinkang tablet.