Antioxidant Properties and Applications of Food By-Products

A special issue of Antioxidants (ISSN 2076-3921). This special issue belongs to the section "Extraction and Industrial Applications of Antioxidants".

Deadline for manuscript submissions: 31 May 2024 | Viewed by 1023

Special Issue Editor

School of Food Science, South China Agricultural University, Guangzhou 510642, China
Interests: polyphenols; polysaccharides; dietary fiber; bioactivity; interaction between food components; starch digestibility; gut microbiota; functional foods; utilization of agricultural by-products
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Food manufacturing generates large amounts of by-products,  most of which are traditionally regarded as food waste. This classification subsequently leads to resource waste and environmental pollution due to by-product disposal. In reality, these food by-products are enriched with valuable substances, such as natural oxidants (including polyphenols, carotenoids, polysaccharides etc.) and macronutrients (including dietary fiber, starch, protein, fat etc.) with potential applications in functional foods, pharmaceuticals, cosmetics and other industries. The recovery, processing, antioxidant, physiochemical and functional properties of these components are critical for value-added utilizations of food by-products. Although increasing attention has been paid to these fields in recent years, a significant gap still remains for the effective valorization of food by-products. Pursuing novel applications of these by-products would ultimately benefit global environmental and food sustainability.

This Special Issue intends to cover recent updates on the antioxidant properties and applications of food by-products in various industries. Topics include, but are not limited to, the extraction, characterization, antioxidant features and other bioactivities of nutritional or functional substances in food by-products. Studies on the novel processing methods and potential applications of food by-products, as well as the components that can provide benefit, are also welcome.

We invite authors to contribute original research and review articles in related fields to this Special Issue. We believe the development of a greater understanding of these topics would promote the better utilization of food by-products in various industries.

Dr. Kai Wang
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. Antioxidants 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

  • food by-products
  • nutrients
  • extracts
  • bioactive compounds
  • antioxidant activity
  • physiochemical properties
  • functional food
  • value-added application

Published Papers (1 paper)

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Research

15 pages, 2949 KiB  
Article
Research on Phenolic Content and Its Antioxidant Activities in Fermented Rosa rugosa ‘Dianhong’ Petals with Brown Sugar
by Yueyue Cai, Merhaba Abla, Lu Gao, Jinsong Wu and Lixin Yang
Antioxidants 2024, 13(5), 607; https://doi.org/10.3390/antiox13050607 - 15 May 2024
Viewed by 415
Abstract
Fermented Rosa rugosa ‘Dianhong’ petals with brown sugar, a biologically active food popularized in Dali Prefecture, Northwest Yunnan, China, are rich in bioactive compounds, especially polyphenols, exhibiting strong antioxidant activity. This study evaluated their antioxidant activities, total phenolic contents, and concentrations of polyphenols [...] Read more.
Fermented Rosa rugosa ‘Dianhong’ petals with brown sugar, a biologically active food popularized in Dali Prefecture, Northwest Yunnan, China, are rich in bioactive compounds, especially polyphenols, exhibiting strong antioxidant activity. This study evaluated their antioxidant activities, total phenolic contents, and concentrations of polyphenols at different fermentation conditions using different assays: DPPH free-radical scavenging activity, Trolox equivalent antioxidant capacity (TEAC), ferric reducing antioxidant power (FRAP), Folin–Ciocalteu assays, and HPLC–MS/MS and HPLC–DAD methods. The results indicated that fermentation significantly increased (p < 0.05) the antioxidant activity and polyphenol concentration of R. rugosa ‘Dianhong’. Furthermore, Saccharomyces rouxii TFR-1 fermentation achieved optimal bioactivity earlier than natural fermentation. Overall, we found that the use of Saccharomyces rouxii (TFR-1) is a more effective strategy for the production of polyphenol-rich fermented R. rugosa ‘Dianhong’ petals with brown sugar compared to natural fermentation. Full article
(This article belongs to the Special Issue Antioxidant Properties and Applications of Food By-Products)
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