Study on the Extraction and Purification Process of Flavonoids from Rose Dregs
Roses are rich in functional substances such as polysaccharides,flavonoids,anthocyanidins,and have biological activities and high application value.In this study,the extraction process of flavonoids from rose dregs after essential oil extraction was studied.The optimum extraction conditions of flavonoids from rose residue were determined:the concentration of ethanol was 70％,the ratio of solid to liquid was 1∶20,the extraction temperature was 75 ℃,the extraction time was 2 h.Under this condition,the extraction rate of total flavonoids was 49.75％.AB-8 resin was identified as rose flavone purification resin,and the adsorption and desorption process were optimized.During the adsorption,the injection flow rate was 3 BV/h,the injection concentration was 3 mg/mL,the washing volume was 3 BV,the desorption agent was 60％ethanol,the desorption flow rate was 2 BV/h,and the purity of flavone reached more than 80％after concentration and drying.
Rose dregsflavonoidsextraction processpurification process
万方数据
维普
