Structure, Functions, and Uses of Oil Bodies

A special issue of Biomolecules (ISSN 2218-273X). This special issue belongs to the section "Biomacromolecules: Lipids".

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 2912

Special Issue Editors


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Guest Editor
1. Agro-Industrial Chemistry Laboratory (LCA), University of Toulouse, 31030 Toulouse, France
2. Biological Engineering Department, Paul Sabatier University, 32000 Auch, France
Interests: cereals; oilseed crop; plant physiology; plant breeding; abiotic stress; bioactives accumulation
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Guest Editor
Biobased Soft Materials, Biobased Chemistry and Technology Group, Wageningen University, Wageningen, The Netherlands
Interests: soft materials; biosourced polymers; plant proteins; lipid droplets/Oleosomes

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Guest Editor
Laboratoire de Chimie Agro-industrielle, LCA, Université de Toulouse, INRAE, Toulouse, France
Interests: chemical reactivity; oleochemistry and self-assembled systems; bioresources; physico-chemistry

Special Issue Information

Dear Colleagues, 

Seeds are plants’ organs of resistance to environment adversity. In order to ensure the survival of the species, the structure of the seeds was built to give the energy necessary for the restarting and development of the embryo. Reserves are stored in different forms, such as starch or lipids. Lipids are stored in spherical organelles named oleosomes, oil bodies or lipid droplets. These organelles contain natural oils, stored in the form of triacylglycerols for use during the germination process. The stability of the triacylglycerol reserves is ensured by a membrane of phospholipids associated with unique proteins named oleosins. The exceptional stability of oleosomes has attracted growing interest in understanding their properties, function, and uses. However, their physicochemical characteristics appear to be dependent on many external and intrinsic factors.

The objective of this call for papers is to provide knowledge on:

- The structure of oleosomes;

- Their diversity both among species, organs, and between genotypes;

- The impact of the environment (stress) on their formation, composition, conservation, etc.;

- Their extraction and valorization by different chemical or physical means;

- Future potential of oil bodies and industrial prospects;

- Their conservation in different forms.

Dr. Othmane Merah
Dr. Constantinos V. Nikiforidis
Dr. Romain Valentin
Guest Editors

Manuscript Submission Information

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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. Biomolecules is an international peer-reviewed open access monthly journal published by MDPI.

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Keywords

  • oil bodies
  • oleosomes
  • lipid droplets
  • oil droplets
  • self-assembled systems
  • oleochemistry
  • green chemistry
  • surfactants
  • biosourced products
  • oleosins
  • caleosins
  • stereoleosins
  • ultrastucture
  • genetics, molecular studies
  • specific diversity
  • genotypic variability
  • extraction methods
  • catalysis
  • food and non-food applications
  • chemical and biological stability
  • vectorization and protection of active ingredients
  • antioxidant activity
  • formulation
  • conservation
  • applications

Published Papers (1 paper)

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Research

16 pages, 4723 KiB  
Article
Aqueous Integrated Process for the Recovery of Oil Bodies or Fatty Acid Emulsions from Sunflower Seeds
by Audrey Cassen, Jean-François Fabre, Eric Lacroux, Muriel Cerny, Guadalupe Vaca-Medina, Zéphirin Mouloungui, Othmane Merah and Romain Valentin
Biomolecules 2022, 12(2), 149; https://doi.org/10.3390/biom12020149 - 18 Jan 2022
Cited by 6 | Viewed by 1949
Abstract
An aqueous integrated process was developed to obtain several valuable products from sunflower seeds. With a high-shear rate crusher, high-pressure homogenization and centrifugation, it is possible to process 600× g of seeds in 1400× g of water to obtain a concentrated cream phase [...] Read more.
An aqueous integrated process was developed to obtain several valuable products from sunflower seeds. With a high-shear rate crusher, high-pressure homogenization and centrifugation, it is possible to process 600× g of seeds in 1400× g of water to obtain a concentrated cream phase with a dry matter (dm) content of 46%, consisting of 74 (w/w dm) lipids in the form of an oil-body dispersion (droplet size d(0.5): 2.0 µm) rich in proteins (13% w/w dm, with membranous and extraneous proteins). The inclusion of an enzymatic step mediated by a lipase made possible the total hydrolysis of trigylcerides into fatty acids. The resulting cream had a slightly higher lipid concentration, a ratio lipid/water closer to 1, with a dry matter content of 57% consisting of 69% (w/w) lipids, a more complex structure, as observed on Cryo-SEM, with a droplet size slightly greater (d(0.5): 2.5 µm) than that of native oil bodies and a conserved protein concentration (12% w/w dm) but an almost vanished phospholipid content (17.1 ± 4.4 mg/g lipids compared to 144.6 ± 6 mg/g lipids in the oil-body dispersion and 1811.2 ± 122.2 mg/g lipids in the seed). The aqueous phases and pellets were also characterized, and their mineral, lipid and protein contents provide new possibilities for valorization in food or technical applications. Full article
(This article belongs to the Special Issue Structure, Functions, and Uses of Oil Bodies)
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