Determination of total flavonoids in Urtica angstifolia
Urtica angstifolia is rich in flavonoids compound and rich resources in the northeast of China, but it is not developed and utilize. The flavonoids are the newly discovered essential natural nutrient of human being. In the paper, we established a method for the determination of total flavonoids in Urtica angstifolia, and provided basis for the study of its quality. The contents of total flavonoids in Urtica angstifolia were compared with Rutin and determined by UV-spectrophotometry with a detection wavelength at 510nm. The method is simple, highly accurate, reproducible and can be applied to determine total flavonoid in Urtica accurately. But the determination process operation should be rapid, should better complete in 5min.