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KMID : 1007519960050040300
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Food Science and Biotechnology
1996 Volume.5 No. 4 p.300 ~ p.304
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Supercritical Carbon Dioxide Extraction of Perilla Seed Oil
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Choi, Yong Hee
Lee, Won Young/Kim, Sang Uk/Yeo, Sang Do
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Abstract
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Supercritical carbon dioxide extraction of perilla seed oil, containing more than 60% α-linolenic acid, was performed at pressures of 3000, 5000 and 7000 psi, and at temperatures of 40, 50 and 60℃. The extraction yield increased with pressure at all temperatures tested. The extraction rate and yield decreased with the increase of temperature at 3000 psi. But this trend was reversed at 7000 psi. At 5000 psi, the extraction rate and yield remained constant with temperature. The effect of the particle size of perilla seed was also studied in the size of 2000∼1410, 1410∼840 and 840∼420 ㎛. Longer equilibrium-controlled period and higher extraction yield were observed when smaller seed particles were used. The α-linolenic acid concentration in the oil extracted with SC-CO₂was higher than that in the oil extracted with n-hexane or presser.
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