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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Determination of free fatty acids in crude vegetable oil samples obtained by high-pressure processes

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Author(s):
Vicentini-Polette, Carolina Medeiros [1] ; Ramos, Paulo Rodolfo [1] ; Goncalves, Cintia Bernardo [2] ; De Oliveira, Alessandra Lopes [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Fac Anim Sci & Food Engn FZEA, Dept Food Engn, LTAPPN, Av Duque Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil
[2] Univ Sao Paulo, Fac Anim Sci & Food Engn FZEA, Dept Food Engn, Memoriam, Av Duque Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: FOOD CHEMISTRY-X; v. 12, DEC 30 2021.
Web of Science Citations: 0
Abstract

This study determined the total acidity, fatty acids profile (TFAs), and free fatty acids (FFAs) present in sunflower and soybean oils obtained by green processes (supercritical carbon dioxide-scCO(2) and pressurized liquid extraction-PLE). The determination of the primary fatty acids responsible for product acidity can provide a higher quality product. Sunflower (scCO(2)/PLE-ethanol) and soybean (PLE-ethanol/PLE-hexane) samples were evaluated. The TFAs profile was determined by gas chromatography - mass spectrometry. The total FFAs content was determined by titrimetric method. For the qualitative determination of the FFAs present in the oils, a new technique capable of repeatably identifying the main FFAs was applied, using GC/MS. The primary fatty acids (palmitic, stearic, oleic, linoleic, eicosenoic, and linolenic) were present in all samples, both as TFAs and FFAs. However, fatty acids of lesser intensity showed variations. The applied methodology provided relevant data on the FAs that cause acidity in vegetable oils obtained by green processes. (AU)

FAPESP's process: 18/18024-7 - Scale-up of a pressurized liquid extraction equipment operating in batch - a study directed at efficient production of passion fruit tincture and soybean oil using green solvents
Grantee:Alessandra Lopes de Oliveira
Support Opportunities: Regular Research Grants