Methods of separating a corn fiber lipid fraction from corn fiber
    3.
    发明授权
    Methods of separating a corn fiber lipid fraction from corn fiber 失效
    从玉米纤维中分离玉米纤维脂质部分的方法

    公开(公告)号:US06589760B1

    公开(公告)日:2003-07-08

    申请号:US09501917

    申请日:2000-02-10

    IPC分类号: C12Q137

    摘要: The invention provides a method of separating from corn fiber a lipid fraction having phytosterol esters and phytosterols where the method has the steps of: (a) heating an aqueous mixture of unground corn fiber; (b) contacting the mixture of step (a) with at least one enzyme suitable for digesting starch for a time and at a temperature suitable to provide a mixture of an essentially destarched corn fiber and a liquid comprising soluble carbohydrates; (c) contacting the mixture of step (a) or (b) with a protease enzyme to provide a proteolyzed corn fiber and a liquid; (d) separating the liquid of step (c) from the corn fiber to provide a destarched, proteolyzed corn fiber; and (e) extracting the destarched, proteolyzed corn fiber with at least one organic solvent. A corn fiber lipid fraction/organic solvent solution having phytosterol esters and phytosterols is provided. The invention also provides a corn fiber lipid fraction containing phytosterols and phytosterol esters obtained via solvent extraction of a proteolyzed corn fiber. The concentration of phytosterols and phytosterol esters in the lipid fraction is at least about 1.4 times greater than the concentration of phytosterols and phytosterol esters in the lipid fraction of a nonproteolyzed corn fiber.

    摘要翻译: 本发明提供了一种从玉米纤维中分离具有植物甾醇酯和植物甾醇的脂质部分的方法,其中该方法具有以下步骤:(a)加热未研磨的玉米纤维的水性混合物; (b)使步骤(a)的混合物与适合于消化淀粉的至少一种酶接触一段时间,并在适于提供基本上破裂的玉米纤维和包含可溶性碳水化合物的液体的混合物的温度下接触; (c)使步骤(a)或(b)的混合物与蛋白酶接触以提供蛋白水解的玉米纤维和液体; (d)将步骤(c)的液体与玉米纤维分离以提供破坏的蛋白水解的玉米纤维; 和(e)用至少一种有机溶剂萃取破坏了的,蛋白水解的玉米纤维。 提供了具有植物甾醇酯和植物甾醇的玉米纤维脂质部分/有机溶剂溶液。 本发明还提供了通过蛋白水解的玉米纤维的溶剂提取获得的含有植物甾醇和植物甾醇酯的玉米纤维脂质部分。 在脂质部分中植物甾醇和植物甾醇酯的浓度比非分解玉米纤维的脂质部分中的植物甾醇和植物甾醇酯的浓度高至少约1.4倍。