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Seaweed is consumed as nutritive food materials in many Asian countries such as Japan, Korea and China. In the present study, we analyzed proximate composition of two Korean seaweeds  Sargassum horneri  and  Ecklonia cava . Crude protein content of  S. horneri  and  E. cava  were 8.57% and 9.11%, whereas 1.03% and 1.40% of total lipid was found from  S. horneri  and  E. cava . We used supercritical carbon dioxide (SC-CO 2 ) with ethanol, methanol, acetone and hexane for the extraction process. The highest extraction yield was obtained from  E. cava  by SC-CO2 with ethanol and the value was 1.52 g/100 g DW. Further, fatty acid composition of  S. horneri  and  E. cava  by SC-CO 2  with ethanol were analyzed. The total unsaturated fatty acid of  S. horneri  and  E. cava  samples were 59.95% and 17.79%, respectively. Important PUFA such as EPA and DHA were present in both samples. Total phenolic content (TPC), total flavonoid content (TFC) and antioxidant activity were found in both seaweed extracts with the highest concentration obtained from  E. cava  extracted by SC-CO 2  with ethanol.

Antioxidant Activity of Two Edible Korean Seaweed Oil Obtained from SC-CO2 and Solvent Extraction

Antioxidant Activity of Two Edible Korean Seaweed Oil Obtained from SC-CO₂ and Solvent Extraction