A New Process of Extracting Oleoresin Ginger from Ginger by Critical-state Liquid CO_2

摘要

We developed a new procession of extraction efficiency of ginger oleoresin by comparing the CO_2 flux in liquid state with that in supercritical state under variant pressure conditions. In our this report, we found that the optimal parameters of this procession: 9～10MPa in extraction pressure, 10 ～20°C in extraction temperature, 8～10MPa in isolation pressure, and 35～45°C in isolation temperature. This procession is steady and ensures both the extraction yield of ginger oleoresin and the low cost of operation.