A process for extracting and purifying Pongamia pinnata flavonoids, the extraction steps are as follows: the water yellow root and stem and leaf meal, according to the weight of the medicine for 8 to 15 times (the ratio of mass to volume ratio) with 50 ~ 70% ethanol at 60 to 80 DEG C, extracting 3 times, every time 0.5 ~ 2.0h. Combined extraction, filtration, vacuum recovery of ethanol, water extract of the Yellow medicine; Pongamia crude aqueous extract of step 1 get static, the supernatant was purified by macroporous adsorption resin elution; the collection procedure of ethanol elution liquid, ethanol concentration vacuum recovery of 50 ~ 65 DEG C, vacuum dry extract purification products. The total flavone content of the product extracted from the aqueous extract of Chinese medicinal herbs is from 50% to 70%, and the total flavone transfer rate of the water bamboo yellow is 75 to 80%. Compared with the prior art, the invention has the advantages of simple process, less loss of active components, high safety, etc..
【技术实现步骤摘要】
【技术保护点】
1.一种水黄皮药材提取物,其特征是所述提取物中总黄酮质量含量为50~70%。
【技术特征摘要】
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