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Special Issue "Seaweeds: Drifting from Bioactive Molecules to Health-related Effects and Cosmetic Applications"

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Natural Products Chemistry".

Deadline for manuscript submissions: 15 December 2018

Special Issue Editors

Guest Editor
Dr. Natália Martins

Faculty of Medicine, University of Porto – PortugalInstitute for Research and Inovation in Health (i3S), University of Porto - Portugal
Website | E-Mail
Interests: Evidence-based medicine; Phytochemistry; Phytopharmacology; Drug discovery; Natural products biochemistry; Bioactive molecules; Functional foods; Nutraceuticals
Guest Editor
Dr. Laurent Vandanjon

Faculty of Sciences and Sciences of the Engineer, LBCM Laboratory of Marine Biotechnology and Chemistry, Vannes, France
Website | E-Mail
Interests: Chemical engineering; Membrane technology; Water and wastewater treatment; Bioengineering; Environment; Separation technology; Seawater bioactive molecules

Special Issue Information

Dear Colleagues,

Much has been done in the world of terrestrial plants and their correspondent benefits. Today, we have high-tech tools to exploit the wealth of marine plants and to enjoy their extraordinary health and cosmetics attributes.

Algae secrete anti-stress, antioxidant, anti-inflammatory molecules, in addition to improving the synthesis of functional proteins, microcirculation, and so on.

Biocompatibility is one of the secrets of marine active ingredients’ effectiveness, which almost never lead to signs of intolerance (except for iodine) and in which the mechanism of action is often similar to that of the human body.

This Special Issue of Molecules welcomes original research and reviews on:

1) Extraction, purification and identification of bioactive substances from marine algae used in cosmetics and pharmaceutical products, as well as complementary foods.

2) Biorefining processes (algorefinery) aiming a complete algae compounds valorization for environmental benefits.

3) Concentration of bioavailable seawater nutrients (trace elements, vitamins, mineral ions, etc.)

4) Health-related effects and cosmetic applications of molecules extracted from extremophiles seaside plants (halophilic)

Natália Martins and Laurent Vandanjon

Guest Editors

Dr. Natália Martins
Dr. Laurent Vandanjon
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 papers will be 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. Molecules 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 1800 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

  • Macroalgae
  • Halophilic plants
  • Seawater
  • Marine bioactive molecules.

Published Papers (2 papers)

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Research

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Open AccessArticle Antifungal Efficacy of Marine Macroalgae against Fungal Isolates from Bronchial Asthmatic Cases
Molecules 2018, 23(11), 3032; https://doi.org/10.3390/molecules23113032 (registering DOI)
Received: 10 October 2018 / Revised: 15 November 2018 / Accepted: 16 November 2018 / Published: 20 November 2018
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Abstract
Fungal sensitization is very common in bronchial asthmatic cases, and the connection with airway colonization by fungi remains uncertain. Antifungal therapy failure is a significant fraction of the cost and morbidity and mortality in the majority of the asthmatic cases. Hence, the present
[...] Read more.
Fungal sensitization is very common in bronchial asthmatic cases, and the connection with airway colonization by fungi remains uncertain. Antifungal therapy failure is a significant fraction of the cost and morbidity and mortality in the majority of the asthmatic cases. Hence, the present study aimed to investigate the antifungal activity of five marine macroalgae—Acanthaophora specifera, Cladophoropsis sp., Laurencia paniculata, Tydemania sp., and Ulva prolifera—which were tested on selected fungal pathogens isolated from 15 sputum of 45 bronchial asthmatic patients. The highest antifungal activity was observed in ethanol fractions of L. paniculata followed by U. prolifera, Cladophoropsis sp., A. specifera, and Tydemania sp. The minimum fungicidal concentration and minimum inhibitory concentration values of the ethanolic fractions of algal species were found to be 125–1000 µg/mL and 125–500 µg/mL, respectively. The algal extracts contained terpene alcohol, diterpene, steroids, sesquiterpene, and sesquiterpene alcohol, as determined by GC–MS/MS analyses. The present study shows that the marine macroalgae containing bioactive compounds had excellent inhibitory activity against a variety of fungal pathogens, which may be useful for combating fungal infections and recovering from chronic asthmatic states. Full article
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Review

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Open AccessReview Oligosaccharides Derived from Red Seaweed: Production, Properties, and Potential Health and Cosmetic Applications
Molecules 2018, 23(10), 2451; https://doi.org/10.3390/molecules23102451
Received: 31 August 2018 / Revised: 17 September 2018 / Accepted: 21 September 2018 / Published: 25 September 2018
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Abstract
Because of their potential use as functional ingredients in human nutrition, oligosaccharides derived from natural sources are receiving paramount consideration. Red seaweed, a proven rich source of agar and carrageenan, is one of the most abundantly present sources of such oligosaccharides. Agaro-oligosaccharides (AOS)
[...] Read more.
Because of their potential use as functional ingredients in human nutrition, oligosaccharides derived from natural sources are receiving paramount consideration. Red seaweed, a proven rich source of agar and carrageenan, is one of the most abundantly present sources of such oligosaccharides. Agaro-oligosaccharides (AOS) and carrageenan-oligosaccharides (COS) are produced from agar and carrageenan, respectively, through chemical and enzymatic hydrolyses. Enzymatic hydrolysis of agar and carrageenan into oligosaccharides is preferred in industrial production because of certain problems associated with chemical hydrolysis, including the release of high amounts of monosaccharides and undesirable toxic products, such as furfural. AOS and COS possess many biological activities, including prebiotic, immuno-modulatory, anti-oxidant, and anti-tumor activities. These activities are related to their chemical structure, molecular weight, degree of polymerization, and the flexibility of the glycosidic linkages. Therefore, the structure–function relationship and the mechanisms occurring during the specific biological applications of AOS and COS are discussed herein. Moreover, the chromatographic separation, purification, and characterization of AOS and COS are also part of this review. This piece of writing strives to create a new perspective on the potential applications of AOS and COS in the functional food and pharmaceutical industry. Full article
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