earticle

영어

In this study, two different extraction techniques, organic solvent extraction and supercritical carbon dioxide (SCCO2) extraction, were employed to evaluate the extraction efficiency of oil from Chlorella vulgaris. In the organic solvent extraction, the effects of various organic solvent on the extraction yield were investigated. The SCCO2 extraction was carried out while varying such operating parameters as temperature, pressure, SCCO2 flow rate, and cosolvent. About 4.9 wt% of oil was extracted from ground Chrollera vulgaris for 18 h when dichloromethane/methanol (2：1, v/v) was used as an extraction solvent. The oil yield of the SCCO2 extraction was found to be very low (0.53 wt%) and to increase up to about 0.86 wt% with the addition of cosolvent.