Extraction Processing of Total Flavonoids from Oenanthe javanica using Accelerated Solvent Extraction Method

In order to improve the extraction efficiency, the extraction processing of total flavonoids from Oenanthe javanica was optimized by single factor and orthogonal experiments based on the extraction rate of total flavonoids as an evaluation index. Results indicated that the optimal extraction processing parameters were ethanol concentration of 60%, extraction temperature of 100 ℃, extraction time of 5 min and repeated extraction number of 3. Under the optimal extraction conditions, the extraction rate of total flavonoids was 3.64%. This accelerated solvent extraction method has the advantages of shortening extraction time and improving extraction rate of total flavonoids.