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Información tecnológica

On-line version ISSN 0718-0764

Abstract

DORADO, Daniela J; HURTADO-BENAVIDES, Andrés M  and  MARTINEZ-CORREA, Hugo A. Extraction of Soursop (Annona muricata) Seed Oil by Supercritical CO2: Kinetic, Fatty Acid and Sterol Profiles. Inf. tecnol. [online]. 2016, vol.27, n.5, pp.37-48. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642016000500005.

The extraction of soursop seed oil by supercritical carbon dioxide was performed, using pressures between 20 MPa and 35 MPa and temperatures from 313 K to 333 K, with a constant CO2 flow of 30 g.min-1 and an extraction time of 150 min. A central composite experimental design was used to study the effect of pressure (P) and temperature (T) on the yield, fatty acids profile and sterols. The fatty acids profile and sterols were analyzed by gas chromatography. The pressure had a significant effect (p<0,05) on the yield and an optimum yield of 12.9% was reached. Oleic acid is the major fatty acid, followed by palmitic and linoleic acid. Stearic, palmitoleic, linoleic and dodecanoic acids were found in smaller proportions. The presence of campesterol, stigmasterol and β-sitosterol was also found. Therefore, the solvent-free oil obtained shows potential to be used as a natural ingredient in different industries.

Keywords : supercritical CO2; soursop seeds oil; fatty acids; sterols; natural ingredient.

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