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KMID : 1007519960050030229
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Food Science and Biotechnology
1996 Volume.5 No. 3 p.229 ~ p.233
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Concentration of Medium Chain Fatty Acids from Coconut Oil by Supercritical CO2 Extraction
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Kwon Young-An
Yoon Suk-Hoo
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Abstract
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Medium chain fatty acids (MCFAs), such as caprylic and capric acids which are saturated fatty acids having eight and ten carbon atoms, from coconut oil were extracted using supercritical carbon dioxide (SC-CO₂). The pressure and temperature conditions for the extraction ranged from 103 to 138 bar and from 35 to 75℃, respectively. The solubility of the MCFAs increased as the SC-CO₂density, corresponding to the extraction temperature and pressure, enhanced. The extractability was high at 138 bar and 35℃, while the selectivity of MCFAs was high under 103 bar and 75℃. In order to improve the extractability and the selectivity of MCFAs simultaneously, therefore, a two-step extraction method was used. The concentration of MCFAs was increased from 15.7% to approximately 40% using this method.
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