Determination of Chlorogenic Acid and Rutin of Cirsium japonicum DCin Xinjiang by Ultrasonic Extraction-reversed Phase High Performance Liquid Chromatography
The ultrasonic extraction of total flavonoids from Cirsium japonicum DC was optimized by orthogonal tests using total flavonoids contents as the estimative targets.The results showed that under the optimum conditions of material/liquid ratio of 1∶30,ultrasonic treatment time of 45 min,an extraction rate of 2.89mg/g was obtained.The chlorogenic acid and rutin in Cirsium japonicum DCin Xinjiang were determined by high performance liquid chromatography,good linear relationships were found in the range of 1.675...