[Study on supercritical CO2 extraction of fatty oils from the seed of Akebia trifoliata (Thunb) Koidz].

The extraction of fatty oils from the seed of Akebia trifoliata (Thunb) Koidz with supercritical CO2 was studied. The effects of extraction pressure, extraction temperature on the yields were discussed. The optimal condition of this method was as follow: extraction pressure 30 MPa, extraction temerature 45 degrees C, separator I pressure 11 MPa, separator I temperature 50 degrees C, separator II pressure 6MPa, separator II temperature 45 degrees C, extraction period 2 hours. Compared with the traditional solvent extraction, with a GC-MS analysis, it revealed that the component extracted with supercritical CO2 was basically consistent with that extracted with petroleum ether, and it was rich unsaturated fatty acid.