Subcritical Extraction of Salvia hispanica L. Oil with N-Propane: Composition, Purity and Oxidation Stability as Compared to the Oils Obtained by Conventional Solvent Extraction Methods

Author(s)

Zanqui, Ana B. ^[1] ; de Morais, Damila R. ^[2] ; da Silva, Claudia M. ^[1] ; Santos, Jandyson M. ^[2] ; Chiavelli, Lucas U. R. ^[1] ; Bittencourt, Paulo R. S. ^[3] ; Eberlin, Marcos N. ^[2] ; Visentainer, Jesui V. ^[1] ; Cardozo-Filho, Lucio ^[4] ; Matsushita, Makoto ^[1]

Affiliation

^[1] Univ Estadual Maringa, Dept Chem, BR-87020900 Maringa, PR - Brazil

^[2] Univ Estadual Campinas, Inst Chem, ThoMSon Mass Spectrometry Lab, BR-13083970 Campinas, SP - Brazil

^[3] Fed Technol Univ Parana, Dept Chem, BR-85884000 Medianeira, PR - Brazil

^[4] Univ Estadual Maringa, Dept Chem Engn, BR-87020900 Maringa, PR - Brazil

• Document type: Journal article
• Source: Journal of the Brazilian Chemical Society; v. 26, n. 2, p. 282-289, FEB 2015.
• Web of Science Citations: 23

Abstract

This study evaluated the Chia (Salvia hispanica L.) oil composition in terms of fatty acids (FA), sterols, acylglycerols and oxidative stability obtained via subcritical n-propane fluid extraction (SubFE-propane), in different temperatures and pressure conditions, as compared to Bligh & Dyer (BD), Soxhlet (SE) and Folch (FLS) extractions. Total lipid varied from 23.25 to 30.21% and the best yield was obtained by both SubFE-propane extraction at 45 ºC and 12 MPa (A). α-Linolenic acid (18:3n-3) was the most abundant FA and SubFE-propane extraction provided the best results for the sum of n-3 and PUFA. All oil samples were similar in regard to triacylglycerols (TAG) profiles as measured via direct electrospray ionization mass spectrometry (ESI-MS) analysis. The total amounts of stigmasterol, β-tocopherol and tocopherol total were highest in the Chia oil obtained by BD, campesterol and sitosterol by SE and γ-tocopherol by SubFE-propane extraction. The SubFE-propane oil also presented the best (2 to 5 times) oxidation stability. SubFE-propane was the most efficient extraction method for Chia oil, providing the highest extraction yields, purity, oxidation stability and diverse profile of sterols. (AU)

• FAPESP's process: 13/19161-4 - Petroleomics by FT-MS: New Strategies for Characterization by Pre-fractionation of contaminated and emulsified oils
• Grantee: Jandyson Machado Santos
• Support Opportunities: Scholarships in Brazil - Doctorate