Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
8.8
7.0
Journals
Antioxidants
Special Issues
Agri-Food Wastes as Natural Source of Bioactive Antioxidants Vol. III
share announcement

Agri-Food Wastes as Natural Source of Bioactive Antioxidants Vol. III

A special issue of Antioxidants (ISSN 2076-3921).

Deadline for manuscript submissions: 30 June 2024 | Viewed by 2356

Special Issue Editors

Prof. Dr. Silvana Hrelia

E-Mail Website
Guest Editor
Department for Life Quality Studies, Alma Mater Studiorum, University of Bologna, 47921 Rimini, Italy
Interests: cellular biochemistry; nutritional biochemistry; oxidative stress; antioxidants; nutraceuticals
Special Issues, Collections and Topics in MDPI journals
Dr. Cristina Angeloni

E-Mail Website
Guest Editor
Department for Life Quality Studies, Alma Mater Studiorum-University of Bologna, Corso D’Augusto 237, 47921 Rimini, Italy
Interests: nutritional biochemistry; neurodegenerative diseases; oxidative stress; inflammation; nutraceuticals; ageing
Special Issues, Collections and Topics in MDPI journals
Dr. Maria Cristina Barbalace

E-Mail Website
Guest Editor
Department for Life Quality Studies, Alma Mater Studiorum, University of Bologna, Bologna, Italy
Interests: cellular biochemistry; nutraceuticals; neurodegeneration; oxidative stress; inflammation; antioxidants
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The increase in global food production has given rise to increased difficulties in waste management, with substantial environmental impacts. In 2021 alone, 931 million tons of agri-food waste were generated at all stages of the supply chain, from production to household consumption. The management of these residues has become obligatory due to the potential environmental risks associated with their microbial decomposition. In recent years, the scientific community has been focusing on developing sustainable solutions to transform this waste into valuable products. Modern biorefineries already ensure the valorization of many agri-food waste into energy, fuels, and construction materials. However, the chemical composition of these food waste materials makes them a natural reservoir of bioactive compounds with potential health benefits for humans.

Agri-food waste, such as leaves, flowers, stems, and other lignocellulosic portions, still contain abundant cellulose, hemicellulose, and lignin, while other parts like peels, skins, seeds, bones, fish bones, coffee grounds, etc., contain significant levels of sugars, fibers, raw proteins, minerals, organic acids, vitamins, polyphenols, carotenoids, omega-3 fatty acids, oligopeptides, and more. Particularly, polyphenols, classified as flavonoids, tannins, phenolic acids, stilbenes, and lignans, are widely present in waste products originating from fruits and vegetables. They are perhaps the most extensively studied class of bioactive compounds due to their antioxidant activity and ability to modulate inflammation as well as various signal transduction pathways. Because of these properties, polyphenols are currently under preclinical and clinical investigation as dietary adjuncts for the prevention and treatment of chronic degenerative diseases.

In the development of nutraceuticals from waste products, particular attention must be paid to extraction techniques that should maximize the recovery of bioactive compounds while minimizing environmental impact. One key strategy is the adoption of eco-sustainable extraction techniques that reduce the use of toxic chemical solvents and energy consumption.

In this third Special Issue on “Agri-Food Wastes as Natural Source of Bioactive Antioxidants”, our objective is to collect research papers and reviews exploring the multifaceted dimensions of this topic. In particular, we will consider papers on the eco-green extraction and characterization of agri-food wastes to produce antioxidant bioactive compounds, as well as papers on “in vitro” and “in vivo” studies of the effects of these compounds/extracts, with such papers emphasizing the capacity of agri-foods to modulate the intricate signaling networks underpinning the development and progression of chronic and degenerative diseases.

Prof. Dr. Silvana Hrelia
Dr. Cristina Angeloni
Dr. Maria Cristina Barbalace
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. 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

  • agri-food byproducts
  • agri-food waste
  • nutraceuticals
  • functional foods
  • essential oils
  • bioactive compounds
  • phytochemicals
  • health effects
  • green extraction

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

20 pages, 2906 KiB  
Article
Sustainable Utilization of Food Biowaste (Papaya Peel) Extract for Gold Nanoparticle Biosynthesis and Investigation of Its Multi-Functional Potentials
by Jayanta Kumar Patra, Han-Seung Shin, In-Jun Yang, Ly Thi Huong Nguyen and Gitishree Das
Antioxidants 2024, 13(5), 581; https://doi.org/10.3390/antiox13050581 - 9 May 2024
Viewed by 221
Abstract
Papaya contains high amounts of vitamins A, C, riboflavin, thiamine, niacin, ascorbic acid, potassium, and carotenoids. It is confirmed by several studies that all food waste parts such as the fruit peels, seeds, and leaves of papaya are potential sources of phenolic compounds, [...] Read more.
Papaya contains high amounts of vitamins A, C, riboflavin, thiamine, niacin, ascorbic acid, potassium, and carotenoids. It is confirmed by several studies that all food waste parts such as the fruit peels, seeds, and leaves of papaya are potential sources of phenolic compounds, particularly in the peel. Considering the presence of numerous bioactive compounds in papaya fruit peels, the current study reports a rapid, cheap, and environmentally friendly method for the production of gold nanoparticles (AuNPs) employing food biowaste (vegetable papaya peel extract (VPPE)) and investigated its antioxidant, antidiabetic, tyrosinase inhibition, anti-inflammatory, antibacterial, and photocatalytic degradation potentials. The phytochemical analysis gave positive results for tannins, saponins, steroids, cardiac steroidal glycoside, protein, and carbohydrates. The manufactured VPPE-AuNPs were studied by UV–Vis scan (with surface plasmon resonance of 552 nm), X-ray diffraction analysis (XRD) (with average crystallite size of 44.41 nm as per the Scherrer equation), scanning electron microscopy–energy-dispersive X-ray (SEM-EDS), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), particle size, zeta potential, etc. The mean dimension of the manufactured VPPE-AuNPs is 112.2 d.nm (PDI—0.149) with a −26.1 mV zeta potential. The VPPE-AuNPs displayed a significant antioxidant effect (93.24% DPPH scavenging and 74.23% SOD inhibition at 100 µg/mL); moderate tyrosinase effect (with 30.76%); and substantial α-glucosidase (95.63%) and α-amylase effect (50.66%) at 100 µg/mL. Additionally, it was found to be very proficient in the removal of harmful methyl orange and methylene blue dyes with degradation of 34.70% at 3 h and 24.39% at 5 h, respectively. Taken altogether, the VPPE-AuNPs have been proven to possess multiple biopotential activities, which can be explored by the food, cosmetics, and biomedical industries. Full article
(This article belongs to the Special Issue Agri-Food Wastes as Natural Source of Bioactive Antioxidants Vol. III)
►▼ Show Figures

Figure 1

17 pages, 3201 KiB  
Article
Ultrasound-Assisted Maillard Conjugation of Yeast Protein Hydrolysate with Polysaccharides for Encapsulating the Anthocyanins from Aronia
by Loredana Dumitrașcu, Mihaela Brumă (Călin), Mihaela Turturică, Elena Enachi, Alina Mihaela Cantaragiu Ceoromila and Iuliana Aprodu
Antioxidants 2024, 13(5), 570; https://doi.org/10.3390/antiox13050570 - 5 May 2024
Viewed by 417
Abstract
Valorisation of food by-products, like spent brewer’s yeast and fruit pomaces, represents an important strategy for contributing to sustainable food production. The aims of this study were to obtain Maillard conjugates based on spent yeast protein hydrolysate (SYH) with dextran (D) or maltodextrin [...] Read more.
Valorisation of food by-products, like spent brewer’s yeast and fruit pomaces, represents an important strategy for contributing to sustainable food production. The aims of this study were to obtain Maillard conjugates based on spent yeast protein hydrolysate (SYH) with dextran (D) or maltodextrin (MD) by means of ultrasound treatment and to use them for developing encapsulation systems for the anthocyanins from aronia pomace. The ultrasound-assisted Maillard conjugation promoted the increase of antioxidant activity by about 50% compared to conventional heating and SYH, and was not dependent on the polysaccharide type. The ability of the conjugates to act as wall material for encapsulating various biologically active compounds was tested via a freeze-drying method. The retention efficiency ranged between 58.25 ± 0.38%–65.25 ± 2.21%, while encapsulation efficiency varied from 67.09 ± 2.26% to 88.72 ± 0.33%, indicating the strong effect of the carrier material used for encapsulation. The addition of the hydrolysed yeast cell wall played a positive effect on the encapsulation efficiency of anthocyanins when used in combination with the SYH:MD conjugates. On the other hand, the stability of anthocyanins during storage, as well as their bioavailability during gastrointestinal digestion, were higher when using the SYH:D conjugate. The study showed that hydrolysis combined with the ultrasound-assisted Maillard reaction has a great potential for the valorisation of spent brewer’s yeast as delivery material for the encapsulation of bioactive compounds. Full article
(This article belongs to the Special Issue Agri-Food Wastes as Natural Source of Bioactive Antioxidants Vol. III)
►▼ Show Figures

Figure 1

21 pages, 4017 KiB  
Article
Extracts and Scirpusin B from Recycled Seeds and Rinds of Passion Fruits (Passiflora edulis var. Tainung No. 1) Exhibit Improved Functions in Scopolamine-Induced Impaired-Memory ICR Mice
by Yi-Yan Sie, Liang-Chieh Chen, Cai-Wei Li, Ching-Chiung Wang, Cai-Jhen Li, Der-Zen Liu, Mei-Hsien Lee, Lih-Geeng Chen and Wen-Chi Hou
Antioxidants 2023, 12(12), 2058; https://doi.org/10.3390/antiox12122058 - 29 Nov 2023
Cited by 2 | Viewed by 1210
Abstract
In this paper, the seeds and rinds of passion fruit, which are the agricultural waste of juice processing, were recycled to investigate their biological activities for sustainable use. De-oiled seed powders (S) were successively extracted by refluxing 95% ethanol (95E), 50E, and hot [...] Read more.
In this paper, the seeds and rinds of passion fruit, which are the agricultural waste of juice processing, were recycled to investigate their biological activities for sustainable use. De-oiled seed powders (S) were successively extracted by refluxing 95% ethanol (95E), 50E, and hot water (HW), respectively, to obtain S-95EE, S-50EE, and S-HWE. Dried rind powders were successively extracted by refluxing HW and 95E to obtain rind-HWE and rind-95EE, respectively. S-50EE and S-95EE showed the most potent extracts, such as anti-amyloid-β1-42 aggregations and anti-acetylcholinesterase inhibitors, and they exhibited neuroprotective activities against amyloid-β25-35-treated or H2O2-treated SH-SY5Y cells. Scirpusin B and piceatannol were identified in S-95EE, S-50EE, and rind-HWE, and they showed anti-acetylcholinesterase activity at 50% inhibitory concentrations of 62.9 and 258.9 μM, respectively. Daily pretreatments of de-oiled seed powders and rind-HWE (600 mg/kg), S-95EE, and S-50EE (250 mg/kg) or scirpusin B (40 mg/kg) for 7 days resulted in improved learning behavior in passive avoidance tests and had significant differences (p < 0.05) compared with those of the control in scopolamine-induced ICR mice. The seeds and rinds of passion fruit will be recycled as materials for the development of functional foods, promoting neuroprotection and delaying the onset of cognitive dysfunctions. Full article
(This article belongs to the Special Issue Agri-Food Wastes as Natural Source of Bioactive Antioxidants Vol. III)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop