Added Value Fatty Acids Production: Marine Sources

A special issue of Marine Drugs (ISSN 1660-3397).

Deadline for manuscript submissions: closed (20 December 2019) | Viewed by 6354

Special Issue Editor


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Guest Editor
CSIC-IDICAN-UC - Instituto de Biomedicina y Biotecnologia de Cantabria (IBBTEC), Departamento de Biología Molecular, Santander, Spain
Interests: protein engineering; structural biology; x-ray protein crystallography; polyunsaturated fatty acid synthesis; bacterial conjugation

Special Issue Information

Dear Colleagues,

Marine organisms produce specific fatty acids as secondary metabolites to be able to survive in marine habitats. These fatty acids confer specific metabolic and physiological properties to marine organisms such as membrane fluidity or antioxidant activity. These properties make these fatty acids promising nutritional or therapeutical compounds for humans or animals. Considerable efforts are being made to increase the production and yield of these fatty acids to industrial scales. Growing conditions, culture media, or extraction procedures are being optimized for this purpose. Moreover, characterization of the metabolic pathways and genes involved in non-conventional fatty acid synthesis could allow the optimization of this production and the design of novel fatty acids with specific nutraceutical or therapeutical properties.

This special issue aims to highlight the importance of marine fatty acids and the problems involved in their industrial production.

As the Guest Editor, I would like to invite scientists working with marine fatty acids to report recent advances in the field: discovery of marine organisms with novel fatty acid profiles, nutraceutical or pharmaceutical uses of marine fatty acids, characterization of synthases involved in the synthesis of polyunsaturated fatty acids, improvement of industrial production of marine added-value fatty acids. I look forward to receiving your contributions to this Special Issue of the journal Marine Drugs dedicated to added-value fatty acids.

Dr. Gabriel Moncalián
Guest Editor

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. Marine Drugs 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 2900 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

  • Polyunsaturated fatty acid synthesis
  • Essential fatty acids
  • Therapeutic fatty acids
  • Protein engineering
  • Metabolic engineering
  • Oleogenic marine organisms

Published Papers (2 papers)

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Research

16 pages, 2347 KiB  
Article
A Green Enzymatic Extraction Optimization and Oxidative Stability of Krill Oil from Euphausia Superba
by Li Zhou, Fu Yang, Minghao Zhang and Jikai Liu
Mar. Drugs 2020, 18(2), 82; https://doi.org/10.3390/md18020082 - 27 Jan 2020
Cited by 12 | Viewed by 2679
Abstract
Krill oil enriched with polyunsaturated fatty acids is in the form of phospholipid. However, its application as a dietary supplement is limited, because of its rapid deterioration. Thus, this study aims to investigate the oxidative stability of krill oil extracted from Euphausia superba [...] Read more.
Krill oil enriched with polyunsaturated fatty acids is in the form of phospholipid. However, its application as a dietary supplement is limited, because of its rapid deterioration. Thus, this study aims to investigate the oxidative stability of krill oil extracted from Euphausia superba. Under optimal conditions (enzyme concentration 0.16%, enzymolysis time 2.9 h, and enzymolysis temperature of 45 °C) designed by response surface methodology, the extraction yield of krill oil is 86.02%. Five assays, including peroxide value (POV), thiobarbituric acid-reactive substances (TBARS), pH value, and turbidity were used to determine the oxidative stability of krill oil nanoliposomes during storage. Carboxymethyl chitosan (CMCS) nanoliposomes showed a significant reduction in POV and TBARS values, a prevention of pH value decrease and turbidity increase. This study indicated that CMCS nanoliposome can effectively improve the oxidative stability of krill oil during storage. Furthermore, the release profile in vitro illustrated that the controlled release of krill oil carried out by CMCS nanoliposomes is feasible. Full article
(This article belongs to the Special Issue Added Value Fatty Acids Production: Marine Sources)
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12 pages, 2304 KiB  
Article
Investigating the Mechanism for the Enhanced Oxidation Stability of Microencapsulated Omega-3 Concentrates
by Qiuyu Xia, Taiwo O. Akanbi, Bo Wang, Rui Li, Wenrong Yang and Colin J. Barrow
Mar. Drugs 2019, 17(3), 143; https://doi.org/10.3390/md17030143 - 28 Feb 2019
Cited by 10 | Viewed by 3412
Abstract
Enzymatically concentrated anchovy oil (concentrate) is known to be much less stable than unconcentrated anchovy oil. However, we previously showed that concentrate surprisingly forms more stable microcapsules, when produced by complex coacervation, than does unconcentrated anchovy oil. Here we investigate the mechanism of [...] Read more.
Enzymatically concentrated anchovy oil (concentrate) is known to be much less stable than unconcentrated anchovy oil. However, we previously showed that concentrate surprisingly forms more stable microcapsules, when produced by complex coacervation, than does unconcentrated anchovy oil. Here we investigate the mechanism of this unexpected stability. We also investigate whether or not incorporation of concentrate can be used as an additive to improve the stability of unconcentrated anchovy oil microcapsules. Results showed that microcap stability increased as the amount of added concentrate increased. Decreased emulsion droplet size, lower positively charged zeta potential, and higher surface hydrophobicity were observed in the oil/water (O/W) emulsion, with the incorporation of concentrate in the oil phase, compared with the unconcentrated anchovy oil O/W emulsion. Both the decreased zeta potential and the increased hydrophobicity of concentrate in the mixed oil phase may improve droplet agglomeration, leading to enhanced oxidative stability of the concentrate-containing microcapsules. Decreased repulsive forces between droplets result in a more compact structure, thicker outer shell, and smoother surface, resulting in enhanced oxidation stability of the concentrate-containing microcapsules. Full article
(This article belongs to the Special Issue Added Value Fatty Acids Production: Marine Sources)
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