As a function of pressure increase from 10 to 30MPa, the solubility of oil in SC-CO2 repeatedly increased. Applying SFE at 30MPa resulted in no significant increase in the yield of the extract even with contact time of 3 h (solvent/solid ratio of approximately 6). The maximum yield approached with SFCO2 was 6.65 g extract from 100 g ground cardamom. This value
is significantly lower than 7.9 reported by Gopalakrishnan and