High purity carnosic acid from rosemary and sage extracts by
pH-controlled precipitation
    1.
    发明授权
    High purity carnosic acid from rosemary and sage extracts by pH-controlled precipitation 失效
    通过pH控制沉淀,从迷迭香和鼠尾草提取物中提取高纯度的鼠尾草酸

    公开(公告)号:US5859293A

    公开(公告)日:1999-01-12

    申请号:US892046

    申请日:1997-07-14

    CPC分类号: A23L3/3472 A23L3/3508

    摘要: A process for the extraction and isolation of concentrated carnosic acid from plant matter of the Labiatae family including contacting the plant matter with a water-miscible solvent to form a plant extract and adjusting the pH of the plant extract to a level between 7 and 10 while adding water in an amount sufficient to cause precipitation of impurities while retaining the carnosic acid salt in solution. The impurities are separated and the remaining aqueous solution is acidified to precipitate a highly purified carnosic acid product which is essentially odorless, flavorless and colorless.

    摘要翻译: 从Labiatae家族的植物物质提取和分离浓缩的鼠尾草酸的方法,包括将植物物质与水混溶性溶剂接触以形成植物提取物并将植物提取物的pH调节至7至10的水平,同时 加入足够量的水以引起杂质沉淀,同时保留溶液中的鼠尾草酸盐。 分离杂质,将剩余的水溶液酸化以沉淀基本上无臭,无味和无色的高度纯化的肌肉酸产物。