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    • 46. 发明申请
    • METHOD FOR EXTRACTING VOLATILE COMPOUNDS WITH SUPERCRITICAL CARBON DIOXIDE, AND COMPOUNDS SO OBTAINED
    • 用超临界二氧化碳萃取挥发性化合物的方法和获得的化合物
    • WO1989009639A1
    • 1989-10-19
    • PCT/FR1989000158
    • 1989-04-06
    • INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE ...ADDA, JacquesLORNE, Jean-Luc
    • INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE ...
    • B01D11/02
    • B01D11/0203A23L27/11
    • In the method disclosed, supercritical CO2 gas is percolated through the starting material and becomes laden with extractible compounds. When the percolation pressure reaches a predetermined value, the pressure in the percolation medium is reduced by bringing said medium into a separation region where the volatile compounds are trapped in the dry ice formed. The compounds are recovered in aqueous solution after sublimation of the CO2. According to the invention, the extraction is carried out in the separation region in the presence of a trapping medium capable of retaining the volatile compounds, advantageously a medium sparingly soluble in liquid or supercritical CO2 and capable of dissolving the volatile compounds (glycerol or edible oil) or of complexing them (cyclodextrins). The starting material chosen has a lipid content which is not excessively high (in particular, fruits and derived products). The trapping medium which retains the volatile compounds and the latter, after separation from said medium, are useful as aromas.
    • 在所公开的方法中,超临界CO 2气体通过起始材料渗透并变得充满可萃取的化合物。 当渗滤压力达到预定值时,通过使所述介质进入分离区域来降低渗滤介质中的压力,其中挥发性化合物被捕获在形成的干冰中。 在二氧化碳升华后,将化合物回收在水溶液中。 根据本发明,在存在能够保留挥发性化合物的捕获介质的存在下,在分离区域中进行提取,有利地是可溶于液体或超临界CO 2的介质,并且能够溶解挥发性化合物(甘油或食用油 )或使它们络合(环糊精)。 选择的起始材料的脂质含量不过高(特别是水果和衍生产品)。 保留挥发性化合物和后者的捕集介质在与所述介质分离后可用作香料。