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STUDY OF SOYBEAN OIL EXTRACTION WITH SUPERCRITICAL CO2: EFFECT OF TEMPERATURE ON THE YIELD AND FATTY ACIDS COMPOSITION

RIVERO, E.; COSTA, F. M.; WATANABE, E. O.; HORI, C. E.;

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Soybean oil is one of the most widely consumed oil, essentially for domestic use. Usually, soybean oil is extracted by Soxhlet process using hexane, a toxic and flammable solvent. To reduce environmental and health impacts, an alternative method of extraction using supercritical CO2, a cheap and non-flammable solvent was studied. Soybean flakes were extracted using supercritical CO2 at fixed pressure (250 bar) and in the temperature range of 308-343 K. The effect of the temperature on the extraction kinetics was studied and the fatty composition of the obtained oil was determined. At 250 bar, it has been shown that, as the temperature is increased, the solubility of soybean oil in supercritical CO2 decreases. Moreover, the fatty acids composition of the oil extracted by supercritical CO2 is similar to the one observed for the oil extracted by classical Soxhlet process. A high quality oil, rich in unsaturated fatty acids was obtained.

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DOI: 10.5151/chemeng-cobeqic2015-039-31915-242203

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Como citar:

RIVERO, E.; COSTA, F. M.; WATANABE, E. O.; HORI, C. E.; "STUDY OF SOYBEAN OIL EXTRACTION WITH SUPERCRITICAL CO2: EFFECT OF TEMPERATURE ON THE YIELD AND FATTY ACIDS COMPOSITION", p. 917-922 . In: Anais do XI Congresso Brasileiro de Engenharia Química em Iniciação Científica [=Blucher Chemical Engineering Proceedings, v. 1, n.3]. ISSN Impresso: 2446-8711. São Paulo: Blucher, 2015.
ISSN 2359-1757, DOI 10.5151/chemeng-cobeqic2015-039-31915-242203

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