Assessment of subcritical propane, supercritical CO2 and Soxhlet extraction of oil from sapucaia (Lecythis pisonis) nuts

[Display omitted] •Subcritical propane afforded ∼93% of yield obtained by conventional extraction.•Oils showed a predominance (∼78%) of oleic and linoleic acids.•Stability to oxidation ranged from 6.53 to 11.17h.•Triacylglycerols in sapucaia nut oil are predominantly OOO, SOO, POO, PLO, and POS. The...

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Bibliographic Details
Published in:The Journal of supercritical fluids 2018-03, Vol.133, p.122-132
Main Authors: Teixeira, Gerson Lopes, Ghazani, Saeed M., Corazza, Marcos Lúcio, Marangoni, Alejandro G., Ribani, Rosemary Hoffmann
Format: Article
Language:English
Subjects:
Oxidative stability
Sapucaia
Subcritical propane
Thermal behavior
Triacylglycerols
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Summary:[Display omitted] •Subcritical propane afforded ∼93% of yield obtained by conventional extraction.•Oils showed a predominance (∼78%) of oleic and linoleic acids.•Stability to oxidation ranged from 6.53 to 11.17h.•Triacylglycerols in sapucaia nut oil are predominantly OOO, SOO, POO, PLO, and POS. The extraction of sapucaia (Lecythis pisonis) nut oil (SNO) using subcritical propane (SPE) and supercritical CO2 (with ethanol as co-solvent; scCO2) as solvent was investigated and compared with the conventional (Soxhlet) extraction. Extraction with scCO2 was performed at 333K and 20MPa while the SPE extractions were carried out in different conditions to investigate the effects of temperature (293–333K) and pressure (2–10MPa) on the oil yield and the chemical compositions of the products. Results show that SPE allowed a fast extraction with a higher yield (46.22%) obtained at 333K and 10MPa, representing 93% efficiency compared to Soxhlet. Only temperature had significant (p
ISSN:0896-8446
1872-8162
DOI:10.1016/j.supflu.2017.10.003