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Processes
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Advanced Technologies for Vegetable Oil Extraction
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Advanced Technologies for Vegetable Oil Extraction

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Chemical Processes and Systems".

Deadline for manuscript submissions: 30 December 2024 | Viewed by 20062

Special Issue Editors

Dr. Philippe Evon

E-Mail Website1 Website2
Guest Editor
Laboratoire de Chimie Agro-industrielle (LCA), Université de Toulouse, INRAE, Toulouse INP, Toulouse, France
Interests: biorefinery; twin-screw extrusion; vegetable oil extraction; biopolymers; biocomposites; molding processes
Special Issues, Collections and Topics in MDPI journals
Dr. Evelien Uitterhaegen

E-Mail Website
Guest Editor
Bio Base Europe Pilot Plant (BBEPP), Rodenhuizekaai 1, 9042 Ghent (Desteldonk), Belgium
Interests: industrial biotechnology; process development; scale-up; biorefinery; fermentation; downstream purification; in situ product recovery (ISPR); vegetable oil extraction; extrusion technology

Special Issue Information

Dear Colleagues,

Vegetable oils present a valuable class of bioresources, with applications in both food and non-food industries and a production rate that has been steadily increasing in the last twenty years. Their extraction from oilseeds is a key process, as it exerts a strong impact on the resulting oil characteristics and quality.

In view of the recent pressure towards sustainability, oilseed processing industries are demanding novel oil extraction processes that could be both efficient and more environmentally friendly. Firstly, the use of innovative pre-treatment techniques for the seeds can be a way to promote better extraction of vegetable oils. Secondly, a renewed interest in thermomechanical pressing is currently observed, particularly through the use of twin-screw extruders rather than conventional single-screw presses. Lastly, the use of less hazardous and environmentally harmful extracting solvents, in contrast to the current use of hexane or cyclohexane, is also of great interest at present.

This Special Issue on “Advanced Technologies for Vegetable Oil Extraction” aims to present novel advances in the development of innovative technologies for the extraction of vegetable oil from various seeds. Topics include, but are not limited to:

  • Seed pre-treatments (using microwave technology, drying, extrusion, steam treatment, mechanical treatments, irradiation, etc.);
  • Innovative technologies for (chemo-)mechanical pressing (twin-screw extrusion, etc.), process development and characterisation, and their optimization and scale-up;
  • Green solvent-assisted extraction (supercritical and subcritical fluids like CO2, renewable solvents like bioethanol, etc.);
  • (Enzyme-assisted) aqueous extraction;
  • Valorisation of process waste and by-products (e.g., press cake) through thermopressing and/or injection-molding to produce biomaterials, composite manufacturing, etc;

Alternate vegetable-oil-refining techniques and suggestions of original applications for cakes are not mandatory for this Special Issue. Nevertheless, they will also be appreciated.

Dr. Philippe Evon
Dr. Evelien Uitterhaegen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Processes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • oilseed processing
  • oilseed pre-treatment
  • thermomechanical pressing
  • single-screw press
  • twin-screw extruder
  • green solvents
  • supercritical and subcritical fluids
  • aqueous extraction
  • enzyme-assisted aqueous extraction
  • press cake

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Published Papers (5 papers)

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Research

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14 pages, 3317 KiB  
Article
Supercritical CO2 Extraction of Natural Compounds from Capuchin (Tropaeolum majus) Leaves and Seeds
by Gabriel Corrêa, Michel Rubens dos Reis Souza, Eduardo Soares Nascimento, Thiago Rodrigues Bjerk, José Eduardo Goncalves, Cristiane Mengue Feniman Moritz, Otávio Akira Sakai, Erivaldo Antônio da Silva, Renivaldo José dos Santos, Edson Antônio da Silva, Lucio Cardozo-Filho, Andreia Fatima Zanette and Leandro Ferreira-Pinto
Processes 2024, 12(8), 1566; https://doi.org/10.3390/pr12081566 - 26 Jul 2024
Cited by 1 | Viewed by 644
Abstract
This study investigated the supercritical CO2 extraction of oils from capuchin (Tropaeolum majus) seeds (4.34% moisture content) and leaves (5.26% moisture content) and analyzed the effects of varying temperature and pressure conditions. The extraction yields were 3% for the seeds [...] Read more.
This study investigated the supercritical CO2 extraction of oils from capuchin (Tropaeolum majus) seeds (4.34% moisture content) and leaves (5.26% moisture content) and analyzed the effects of varying temperature and pressure conditions. The extraction yields were 3% for the seeds and 2% for the leaves. The seed extracts were rich in oleic, linoleic, and palmitic fatty acids, whereas the leaf extracts contained a high concentration of octacosanol (73.37%). Kinetic analysis revealed distinct mass transfer mechanisms during extraction, and the Sovová model effectively described the extraction kinetics, showing good agreement with experimental data (ADD% < 4%). An analysis of variance (ANOVA) demonstrated the impact of temperature and pressure on the yields, with temperature being the most influential factor. The experimental conditions ranged from 22 to 28 MPa and from 313.15 to 333.15 K. This study contributes to the understanding of capuchin oil extraction and its potential applications in various fields, owing to the presence of bioactive compounds. Full article
(This article belongs to the Special Issue Advanced Technologies for Vegetable Oil Extraction)
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15 pages, 3859 KiB  
Article
Research on the Supercritical CO2 Extraction Process of Hetian Rose Essential Oil
by Wei Cui, Rongji Xu, Xiaoqiong Li, Junling Yang, Peng Xu, Zhentao Zhang, Ze Yu and Saramaiti Adiges
Processes 2024, 12(7), 1396; https://doi.org/10.3390/pr12071396 - 4 Jul 2024
Cited by 1 | Viewed by 1720
Abstract
A longstanding concern in plant essential oil extraction is how to optimize extraction efficiency with limited materials. Supercritical CO2 extraction has been proven effective in enhancing the yield and efficiency of extracting plant essential oils. However, the impact of temperature, pressure, and [...] Read more.
A longstanding concern in plant essential oil extraction is how to optimize extraction efficiency with limited materials. Supercritical CO2 extraction has been proven effective in enhancing the yield and efficiency of extracting plant essential oils. However, the impact of temperature, pressure, and co-solvent content on extracting Hetian rose essential oil remains unclear. There is a lack of research on the influence of pretreatment methods. This study focuses on investigating supercritical CO2 extraction of rose essential oils from Xinjiang Hetian. The research analyzes the effects of pressure and temperature on the extraction rate and validates the efficiency by calculating the solubility of essential oils in supercritical fluid. Under conditions of 35 MPa, 40 °C, 10 L/h, and a particle size of 0.8 mm, this study evaluates the extraction efficiency using Xinjiang Hetian rose materials pretreated with salt solutions at concentrations of 5%, 10%, and 20%, as well as enzyme solutions at concentrations of 2%, 5%, and 10%. Results indicate that appropriate solution concentration can enhance the extraction effect and mass transfer process, but excessively low or high concentrations do not contribute to improved extraction reactions. The highest extraction rate (8.99%) is achieved using a salt solution concentration of 10%, while the lowest (4.21%) is obtained with a salt solution concentration of 20%. Full article
(This article belongs to the Special Issue Advanced Technologies for Vegetable Oil Extraction)
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14 pages, 2628 KiB  
Article
Novel One-Step Process for the Production of Bioplastic from Rapeseed Press Cake
by Wassim Ammar, Frédéric Delbecq, Isabelle Vroman and Houcine Mhemdi
Processes 2021, 9(9), 1498; https://doi.org/10.3390/pr9091498 - 25 Aug 2021
Cited by 4 | Viewed by 2861
Abstract
Crude rapeseed cake was employed as the starting material for the preparation of protein-based bioplastic films through a wet process. A simple exposure of the agricultural waste to formic acid realized at 40 °C for 15 min could afford a slurry ready for [...] Read more.
Crude rapeseed cake was employed as the starting material for the preparation of protein-based bioplastic films through a wet process. A simple exposure of the agricultural waste to formic acid realized at 40 °C for 15 min could afford a slurry ready for producing robust bioplastic films by casting without another plasticizer addition. After determining the optimal process conditions, all films and membranes were successively characterized by DSC and FT-IR spectroscopy. They were also tested for their water absorption capacity, tensile strength, and elongation at break performance. The respective surface morphology and elementary composition of the products were determined by FE-SEM/EDX. Some attempts to improve their intrinsic properties were performed by loading graphene oxide inside the biopolymer three-dimensional matrix. Full article
(This article belongs to the Special Issue Advanced Technologies for Vegetable Oil Extraction)
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22 pages, 10066 KiB  
Article
Extraction and Quality Evaluation of Biodiesel from Six Familiar Non-Edible Plants Seeds
by Inam Ullah Khan, Hang Chen, Zhenhua Yan and Jun Chen
Processes 2021, 9(5), 840; https://doi.org/10.3390/pr9050840 - 11 May 2021
Cited by 9 | Viewed by 4530
Abstract
Biodiesel produced from non-edible plant sources is cost-effective, biodegradable, environment friendly, and compatible with petro-diesel, but new sources and extraction processes still need to be discovered. Here, we explored the fuel properties of seeds from six non-edible plant sources, including Sapindus mukorossi (Soapnut, [...] Read more.
Biodiesel produced from non-edible plant sources is cost-effective, biodegradable, environment friendly, and compatible with petro-diesel, but new sources and extraction processes still need to be discovered. Here, we explored the fuel properties of seeds from six non-edible plant sources, including Sapindus mukorossi (Soapnut, SP), Vernicia fordii (Tung, TO), Ricinus communis (Castor, CA), Toona sinensis (Juss. TS), Ailanthus altissima (Heaven tree, AA), and Linum usitatissimum L. (Lin seed, LS) from China. The optimum extraction conditions were obtained by optimizing the most important variables (reaction temperature, ratio of alcohol to vegetable oil, catalyst, mixing intensity, and purity of reactants) that influence the transesterification reaction of the biodiesel. All six plants contained high seed oil content (SOC; % w/v) with the highest in the TO-54.4% followed by SP-51%, CA-48%, LS-45%, AA-38%, and TS-35%, respectively, and all expressed satisfactory physico-chemical properties as per international standards of ASTM D6751 and EN14214. Our data provide a scientific basis for growing these plants in unproductive agricultural lands as an alternative energy sources for biodiesel production either standalone or blended with petro-diesel. Full article
(This article belongs to the Special Issue Advanced Technologies for Vegetable Oil Extraction)
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Review

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36 pages, 1500 KiB  
Review
Bio-Refinery of Oilseeds: Oil Extraction, Secondary Metabolites Separation towards Protein Meal Valorisation—A Review
by Mohamad Nehmeh, Ivonne Rodriguez-Donis, Alexandre Cavaco-Soares, Philippe Evon, Vincent Gerbaud and Sophie Thiebaud-Roux
Processes 2022, 10(5), 841; https://doi.org/10.3390/pr10050841 - 24 Apr 2022
Cited by 23 | Viewed by 8482
Abstract
Edible oil extraction is a large and well-developed sector based on solvent assisted extraction using volatile organic compounds such as hexane. The extraction of oil from oilseeds generates large volumes of oilseed by-products rich in proteins, fibres, minerals and secondary metabolites that can [...] Read more.
Edible oil extraction is a large and well-developed sector based on solvent assisted extraction using volatile organic compounds such as hexane. The extraction of oil from oilseeds generates large volumes of oilseed by-products rich in proteins, fibres, minerals and secondary metabolites that can be valued. This work reviews the current status and the bio-macro-composition of oilseeds, namely soybean, rapeseed, sunflower and flaxseed, and the refining process, comprising the extraction of oil, the valorisation and separation of valuable secondary metabolites such as phenolic compounds, and the removal of anti-nutritional factors such as glucosinolates, while retaining the protein in the oilseed meal. It also provides an overview of alternative solvents and some of the unconventional processes used as a replacement to the conventional extraction of edible oil, as well as the solvents used for the extraction of secondary metabolites and anti-nutritional factors. These biologically active compounds, including oils, are primordial raw materials for several industries such as food, pharmaceutical or cosmetics. Full article
(This article belongs to the Special Issue Advanced Technologies for Vegetable Oil Extraction)
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