| 摘要 |
The invention combines the high efficiency of supercritical extraction techniques with the high selectivity achieved by liquid extraction techniques by washing (extracting) the extract from the supercritical extraction (15) with an extraction gas in the liquid state (24). The supercritical extraction gas and the liquid extraction gas preferably comprise the same extraction fluids. In a preferred embodiment the invention is employed to extract the alpha acids values from hops, employing carbon dioxide (CO2) for both the supercritical extraction and the liquid extraction. <IMAGE> |
