One-step Effective Segregation of Ginger Essential Oil and Gingerol in Oleoresin Ginger via Transcritical CO_2

摘要

We developed a supercritical CO_2 extraction procession and determinated ginger essential oil contents from the ginger oleoresin to explore the effects of temperatures or pressures on the supercritical CO_2 extraction. Our research indicated that pressures had little effect on the liquid CO_2 extraction capacity. However, supercritical CO_2 extraction capacity was affected dramatically by the variant pressures. Additionally, changing pressures or temperature pushed the CO_2 into transcritical isolation state. Under this circumstance, we not only ensured the yield of ginger oleoresin, but also did we obtain the ginger essential oil and gingerol simultaneously.