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    • 3. 发明授权
    • Process for removing impurities from natural product extracts
    • 从天然产物提取物中除去杂质的方法
    • US6132726A
    • 2000-10-17
    • US176348
    • 1998-10-21
    • Randall J. DaughenbaughDavid T. BaileyWilliam R. GambleDennis D. Gertenbach
    • Randall J. DaughenbaughDavid T. BaileyWilliam R. GambleDennis D. Gertenbach
    • A61K36/00A61K35/78
    • A61K36/00
    • In general the present invention relates to a process for the removal of undesireable compounds or residues from an extract which are more polar or less polar than the desired target compound. The preferred embodiment of the present invention is a three step process and is described in detail below. The first step includes contacting a plant material that contains the desired target compound(s) with a solvent, thus producing a crude extract containing a mixture of compounds that includes, in addition to the undesireable residues, the desired target compound(s). The second step involves passing the crude extract through a series of columns containing an absorbent that retards the movement of the undesireable compounds, while allowing the desired compounds to pass. The third and final step involves drying the eluant product to achieve a final product.
    • 一般来说,本发明涉及一种从提取物中除去不希望的化合物或残留物的方法,其比所需目标化合物更极性或极性低。 本发明的优选实施方案是三步法并在下面详细描述。 第一步包括使含有所需目标化合物的植物材料与溶剂接触,从而产生含有化合物混合物的粗提取物,除了不期望的残留物之外,还包括所需的目标化合物。 第二步涉及将粗提取物通过一系列含有吸收剂的色谱柱,该吸收剂阻止不需要的化合物的运动,同时允许期望的化合物通过。 第三步和最后一步涉及干燥洗脱剂产品以获得最终产品。