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Natural Products and Sustainable Bioresource Recovery

A special issue of Sustainability (ISSN 2071-1050).

Deadline for manuscript submissions: closed (31 March 2021) | Viewed by 2716

Special Issue Editors


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Guest Editor
REQUIMTE/LAQV, Laboratory of Pharmacognosy, Department of Chemistry, Faculty of Pharmacy, University of Porto, R. Jorge Viterbo Ferreira No. 228, 4050-313 Porto, Portugal
Interests: natural products chemistry; marine natural products; ethnopharmacology; nuclear magnetic resonance, structure elucidation

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Guest Editor
REQUIMTE/LAQV, Laboratory of Pharmacognosy, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
Interests: metabolite profiling of natural matrices; natural agents for inflammation; neurodegenerative disorders
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In alignment with the 2030 Agenda for Sustainable Development stimulus through the setting of activities and ambitious outputs in order to promote the circular economy and an effective use of bio-based materials, researchers have been actively engaged in the integrated and sustainable processing of biomass into various marketable ingredients, chemicals, and biofuels. The increasing demand for environmental protection, together with the desire for bioresource conservation, are also encouraging the efficient valorization of biowastes and bio-based by-products to produce value-added products, mostly finding applications in the production of biofuels, animal feed, and fertilizers. However, a growing number of reports attest to the discovery of natural products obtained from these sources aiming to be used in the biomedical, cosmeceutical, pesticide, and pharmaceutical industries.

Therefore, we encourage scientists to submit their latest research findings and review articles focused on compounds obtained from bioresource-derived wastes and by-products, highlighting structural features and bioactivities, from in vitro studies to biotechnological applications.

The main foci of the current issue will cover (i) the identification and/or isolation of natural products from plant- and animal-derived wastes and byproducts, (ii) studies on their biological properties, and (iii) research on their application in the crop-protection, biomedical, and pharmaceutical sectors, and as natural ingredients for other fine chemical products (e.g., cosmetics).

Prof. Dr. Nelson G. M. Gomes
Prof. Dr. Paula B. Andrade
Prof. Dr. Patrícia Valentão
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. Sustainability is an international peer-reviewed open access semimonthly 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

  • agro-food byproducts
  • bioactive compounds
  • biowaste
  • natural products
  • waste recovery

Published Papers (1 paper)

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Research

11 pages, 2430 KiB  
Article
Characterizations of Gelatin from the Skin of American Bullfrog (Rana catesbeiana) as Affected by Extraction Temperature
by Weibo Zhang, Chong Chen, Ziyu Huang and Pengjie Wang
Sustainability 2021, 13(8), 4390; https://doi.org/10.3390/su13084390 - 15 Apr 2021
Viewed by 1750
Abstract
We investigated the effect of extraction temperature on the gel properties of gelatin from the skin of the American bullfrog (Rana catesbeiana) and the mechanisms. The textural and rheological properties of bullfrog gelatin extracted at 45 °C (G45), 55 °C (G55), [...] Read more.
We investigated the effect of extraction temperature on the gel properties of gelatin from the skin of the American bullfrog (Rana catesbeiana) and the mechanisms. The textural and rheological properties of bullfrog gelatin extracted at 45 °C (G45), 55 °C (G55), and 65 °C (G65) were measured. The molecular weight distributions, microstructures, and amino acid compositions of the bullfrog gelatins were also determined. G45, G55, and G65 had gel strengths of 272.1, 225.6, and 205.8 g and hardness values of 28.1, 24.0, and 22.5 N, respectively. The gelling temperatures ranged from 19.3 to 23.9 °C, and the melting temperatures ranged from 28.9 to 31.5 °C. All the results were compared with those of commercial porcine gelatin. We propose that the higher gel strength of G45 with a higher band intensity of α2-chains compared with G55 and G65 was more likely to form ordered and strong cross-links. The gelatin extracted at a lower temperature (G45) had a finer gel structure, suggesting that it would be more difficult to disrupt by applied force. Gelatin extracted at a lower temperature demonstrated better properties with α2-chains and a fine gel structure. These results provide basic information on the extraction of American bullfrog skin gelatin for industrial applications. Full article
(This article belongs to the Special Issue Natural Products and Sustainable Bioresource Recovery)
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