Version 1
: Received: 19 July 2023 / Approved: 20 July 2023 / Online: 20 July 2023 (13:57:23 CEST)
How to cite:
Mestour, S.; Melloul, S.; Meniai, A. Supercritical Fluid Extraction of Algerian Onion Seed Oils and Optimization of the Composition. Preprints2023, 2023071439. https://doi.org/10.20944/preprints202307.1439.v1
Mestour, S.; Melloul, S.; Meniai, A. Supercritical Fluid Extraction of Algerian Onion Seed Oils and Optimization of the Composition. Preprints 2023, 2023071439. https://doi.org/10.20944/preprints202307.1439.v1
Mestour, S.; Melloul, S.; Meniai, A. Supercritical Fluid Extraction of Algerian Onion Seed Oils and Optimization of the Composition. Preprints2023, 2023071439. https://doi.org/10.20944/preprints202307.1439.v1
APA Style
Mestour, S., Melloul, S., & Meniai, A. (2023). Supercritical Fluid Extraction of Algerian Onion Seed Oils and Optimization of the Composition. Preprints. https://doi.org/10.20944/preprints202307.1439.v1
Chicago/Turabian Style
Mestour, S., Sarra Melloul and Abdeslam-Hassen Meniai. 2023 "Supercritical Fluid Extraction of Algerian Onion Seed Oils and Optimization of the Composition" Preprints. https://doi.org/10.20944/preprints202307.1439.v1
Abstract
Onion is not just an edible food but its seeds can also be an important source of valuable oil with various sensitive applications mainly in pharmaceutical, cosmetic and food fields. This has encouraged the use of a supercritical fluid extraction in the present study to obtain oil from local onion seeds, hence avoiding even traces of organic solvents. For several advantages carbon dioxide at supercritical conditions was used as the fluid. The effects of four key operating parameters like pressure, temperature, particle size and CO2 mass flowrate were investigated in ranges of [150, 250 bars], [35, 65°C], [0.25, 0.85mm] and [50, 100g/min], respectively, using a Box-Behnken experimental design, for a constant extraction time of 3 hours. This led to optimal operating conditions of 250 bar, 57°C, 0.25mm and 50g CO2/min for the highest oil extraction yield value of 24.36%. Furthermore, gas chromatography-mass spectrometry (GC-MS) was used to identify qualitatively and quantitatively the chemical composition of the onion seed oils. About ten components were identified in the extracts, but with four major ones, namely 9,12-Octadecadienoic acid ,methyl ester, 9,12-Octadecadienoic acid (Z,Z)-,methyl ester, 9-Octadecadienoic acid (Z)-,methyl ester and Hexadecanoic acid, methyl ester, present with significant percentages, depending on the operating parameters values. These fatty acids are well known for their benefits for human health. Finally the study shows the importance and the merits of fluids when used under particular conditions of pressure and temperature, in very sensitive industrial fields.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
