Extraction Of Fucoxanthin And Polyphenolfrom Undaria Pinnatifida Using Supercritical carbon Dioxide With Co-solvent

摘要

Extraction of brown seaweed (Undaria pinnatifida) oil was carried out by using supercritical carbon dioxide (SCO_2) and ethanol as co-solvent. The flow rate of ethanol was 3.0% (v/v) as compared to that of SCO_2. Experiments were performed in a semi-batch flow apparatus on dried samples at temperatures from 303 to 333 K and pressures from 80 to 300 bar. Fucoxanthin and polyphenol were quantitatively analyzed by using HPLC and UV-spectrometer. The highest yields of fucoxanthin and polyphenol were shown at 200 bar, 323 K and 250 bar, 333 K, respectively. The solubility of fucoxanthin in SCO_2 agreed well with the Chrastil model.