High Pressure Extraction as a Green Alternative to the Conventional Sunflower Oil (Helianthus annuus) Production Process – Extraction with Pressurized Ethanol in an Intermittent Process and with Supercritical Fluid

High Pressure Extraction as a Green Alternative to the Conventional Sunflower Oil (Helianthus annuus) Production Process – Extraction with Pressurized Ethanol in an Intermittent Process and with Supercritical Fluid

This research explores green‐technology alternatives to extract vegetable oils as alternatives to hexane, a non‐renewable solvent, focussing on sunflower oil. It compares pressurized liquid extraction (PLE) with ethanol and supercritical fluid extraction (SFE) with CO2. Both processes aim to maximiz...

Full description

Saved in:
Bibliographic Details
Published in:Global challenges Vol. 8; no. 11; pp. 2300335 - n/a
Main Authors: Vicentini‐Polette, Carolina Medeiros, Yamada, Beatriz Satie, Ramos, Paulo Rodolfo, da Silva, Marta Gomes, Oliveira, Alessandra Lopes de
Format: Journal Article
Language:English
Published: Hoboken John Wiley & Sons, Inc 01-11-2024
John Wiley and Sons Inc
Wiley
Subjects:
Atmospheric pressure
Carbon dioxide
Clean technology
Ethanol
Fatty acids
green process
Helianthus annuus
Hexanes
High pressure
High temperature
Nitrogen
Oil recovery
Oils & fats
pressurized ethanol
Process variables
Raw materials
Seeds
Solvents
sunflower
Sunflower oil
supercritical carbon dioxide
Supercritical fluids
Supercritical gas extraction
Temperature
Tocopherol
Tocopherols
Triglycerides
Vegetable oils
Viscosity
Vitamin E
Brazil
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This research explores green‐technology alternatives to extract vegetable oils as alternatives to hexane, a non‐renewable solvent, focussing on sunflower oil. It compares pressurized liquid extraction (PLE) with ethanol and supercritical fluid extraction (SFE) with CO2. Both processes aim to maximize oil yield, tocopherol content (α, β, γ, and δ), fatty acid profile (FA), and triacylglycerol (TAG) composition. Results show that SFE at 32 MPa achieves an 87.58% oil recovery, while PLE at 84 °C achieves 93.93%. PLE with ethanol extracts polar minority compounds along with the oil due to its higher temperature, favoring extraction. The total tocopherol content is 91.17 mg/100 g of oil in optimized SFE conditions, with α‐tocopherol extraction influenced by temperature, γ and δ‐tocopherol by pressure. PLE yields 83.16 mg/100 g of oil in tocopherols influenced less by process variables. The fatty acid (FA) profile do not vary in the oils obtained from different processes or based on the variables within each process, with linoleic and oleic acids being the most abundant. Similarly, triacylglycerols (TAGs) C54:5 and C54:6 are predominant. The optimization of SFE and PLE processes indicates a strong potential for using green solvents in the extraction of tocopherol‐rich sunflower oil. Consumable vegetable oils are extracted using hexane, a petroleum‐derived, non‐renewable solvent. Green technological alternatives must be studied to replace this conventional technology, which can leave toxic residues in the oil. The optimization of sunflower oil extraction using two methods that employ green solvents, PLE with ethanol and SFE with CO2, emerges as a promising alternative for obtaining sunflower oil rich in tocopherol.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:2056-6646
2056-6646
DOI:10.1002/gch2.202300335