ObJective: To determine the content of rutin and quercetin in the tartary buckwheat extract

so as to appraise its quality. Method: The chromatographic conditions were as follows: with the Welchrom-C18 (4.6 mm×150 mm

5 μm) as the chromatographic column

methanol-0.2% formic acid solution (50:50) as the mobile phase

280 nm as the detection wavelength

30 ℃ as the column temperature

1.0 mL ·min-1 as the flow rate. Result: The linear range for rutin was 1.56-100.00 mg[DK]·L-1 and the linear range for quercetin was 1.52-97.00 mg[DK]·L-1. The average recovery for rutin and quercetin was 98.49% (RSD 1.25%

n=5) and 97.87% (RSD 1.69%

n=5) respectively. Conclusion: Rutin and quercetin were 18.97%±1.43% and 5.03%±0.42% respectively determined by the method applied.