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地黄(Rehmannia glutinosa)干燥根的热水提取物经5%溴棕三甲铵和1%的硫酸钠处理后,离心,上清液注入2倍量的乙醇中。在用80%乙醇处理后,得到的沉淀物呈
The hot water extract of the dried root of Rehmannia glutinosa was treated with 5% bromotrimethylammonium and 1% sodium sulfate, centrifuged, and the supernatant was infused with 2 times the amount of ethanol. After treatment with 80% ethanol, the precipitate obtained