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    Process for Preparing Xanthophyll Crystal
    8.
    发明申请
    Process for Preparing Xanthophyll Crystal 有权
    制备叶黄素晶体的方法

    公开(公告)号：US20140303406A1

    公开(公告)日：2014-10-09

    申请号：US13825772

    申请日：2011-12-31

    Applicant: Qingguo Lu ,  Yunhe Lian ,  Xuehui Su ,  Xiaodong An ,  Yuanxin Cheng ,  Lijun Qi

    Inventor： Qingguo Lu ,  Yunhe Lian ,  Xuehui Su ,  Xiaodong An ,  Yuanxin Cheng ,  Lijun Qi

    IPC: C07C35/21

    CPC classification number: C07C35/21 ,  C07C403/24 ,  C07C2601/16

    Abstract: Disclosed a process for preparing a xanthophyll crystal, comprising: dissolving the plant extract containing a xanthophyll ester in n-hexane, then filtering the mixture; adding acetone to the filtrate, filtering and collecting a filter cake; mixing the filter cake with soybean oil and ethanol uniformly; saponifying the mixed solution with alkaline aqueous solution; then adding an acidic solution thereto until the mixed solution becomes acidic, concentrating under reduced pressure to obtain a pasty substance; adding n-hexane to the pasty saponified product, standing still and then conducting a solid-liquid separation; washing the resulting solid substance with deionized water; adding a mixed solvent to the washed solid substance, dissolving it with stirring; and then adding n-hexane thereto and standing still to recrystallize. According to the application, organic solvents are used to treat the plant extract and remove non-xanthophyll ester compounds in order to improve the efficiency of the saponification reaction; the saponified solution is concentrated under acidic condition at reduced pressure, then extracted with an organic solvent for saving water; purifying a xanthophyll crystal with a mixed solvent in order to significantly increase the purity of a xanthophyll crystal and proportion of trans-xanthophyll.

    Abstract translation: 披露了一种制备叶黄素晶体的方法，包括：将含有叶黄素酯的植物提取物溶解在正己烷中，然后过滤混合物; 向滤液中加入丙酮，过滤收集滤饼; 将滤饼与大豆油和乙醇均匀混合; 用碱性水溶液皂化混合溶液; 然后加入酸性溶液直到混合溶液变成酸性，减压浓缩得到糊状物质; 向糊状皂化产物中加入正己烷，静置，然后进行固液分离; 用去离子水洗涤所得固体物质; 向混合溶剂中加入混合溶剂，搅拌溶解; 然后加入正己烷，静置，重结晶。 根据应用，有机溶剂用于处理植物提取物并除去非叶黄素酯化合物，以提高皂化反应的效率; 皂化溶液在酸性条件下减压浓缩，然后用有机溶剂萃取以节约用水; 用混合溶剂净化叶黄素晶体，以显着提高叶黄素晶体的纯度和反式叶黄素的比例。

    Methods of saponifying xanthophyll esters and isolating xanthophylls
    9.
    发明授权
    Methods of saponifying xanthophyll esters and isolating xanthophylls 有权
    将叶黄素酯皂化并分离叶黄素的方法

    公开(公告)号：US08716533B2

    公开(公告)日：2014-05-06

    申请号：US13322674

    申请日：2010-05-28

    Applicant: Joshua James Tuinstra ,  Gregory S. Reynhout ,  James Barren

    Inventor： Joshua James Tuinstra ,  Gregory S. Reynhout ,  James Barren

    IPC: C07C35/21

    CPC classification number: C09B61/00 ,  A23L33/105 ,  A61K8/345 ,  A61Q19/00 ,  C07C49/573 ,  C07C403/16 ,  C07C403/24 ,  C07C2601/08 ,  C07C2601/16

    Abstract: This invention relates to a practical and effective process for converting esterified xanthophylls, including zeaxanthin, to non-esterified xanthophylls through saponification. In addition, the invention provides a process for obtaining esterified zeaxanthin in high yields and purities, isolating the xanthophylls from interfering substances such as waxes, oils, and fats. A product of this process is a zeaxanthin rich substrate that is suitable for use in foods, nutritional supplements, cosmetics, pharmaceuticals and related products.

    Abstract translation: 本发明涉及通过皂化将酯化的叶黄素（包括玉米黄质）转化为非酯化的叶黄素的实用和有效的方法。 此外，本发明提供以高产率和纯度获得酯化玉米黄质的方法，将叶黄素与干扰物质如蜡，油和脂肪分离。 该方法的产品是富含玉米黄质的底物，适用于食品，营养补充剂，化妆品，药​​品及相关产品。

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