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Sustainability
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High Added-Value Molecules Recovered from Agri-Food Waste and by-Products
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High Added-Value Molecules Recovered from Agri-Food Waste and by-Products

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Materials".

Deadline for manuscript submissions: closed (26 March 2023) | Viewed by 46117

Special Issue Editors

Dr. Anca Farcas

E-Mail Website
Guest Editor
Faculty of Food Science, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Mănăştur 3-5, 400372 Cluj-Napoca, Romania
Interests: food science; waste exploitation, extraction, and analysis of bioactive compounds; development of new functional products
Special Issues, Collections and Topics in MDPI journals
Dr. Sonia A. Socaci

E-Mail Website1 Website2
Guest Editor
Department of Food Science, University of Agricultural Science and Veterinary Medicine, 400372 Cluj-Napoca, Romania
Interests: food chemistry; bioactive compounds; exploitation of food wastes; biotechnology; food additives; food authentication; functional foods
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Until a few decades ago, food waste was considered neither a cost nor a benefit, usually discarded to landfills, sent for composting, or used as animal feed. The negative perception of these by-products and, implicitly, their deficient management led to environmental degradation and especially to significant loss of valuable material that could otherwise be exploited as food, fuel, and a wide variety of additives.

The general attitude has changed radically, with studies being intensely oriented toward the identification and extraction of valuable compounds from residues and their reintegration in the food industry but also in other fields such as cosmetics, pharmaceuticals, and agriculture. In this context, the exploitation of food waste or by-products for the recovery of valuable functional compounds is one of the most feasible approaches.

This Special Issue aims to provide a wide range of viable alternative models that combine food production with an efficient valorization strategy for waste and by-products, minimization of energy consumption, and environmental protection. Researchers in these fields are invited to propose original research articles as well as relevant state-of-the-art reviews to be published in this Special Issue of Sustainability.

Dr. Anca Farcas
Dr. Sonia A Socaci
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

  • waste
  • food by-products
  • bioactive compounds
  • biomolecules
  • valorization strategy
  • circular economy
  • integrated recovery system
  • innovative technologies
  • functional products

Published Papers (5 papers)

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Research

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20 pages, 3327 KiB  
Article
Investigation on High-Value Bioactive Compounds and Antioxidant Properties of Blackberries and Their Fractions Obtained by Home-Scale Juice Processing
by Cristina-Ramona Metzner Ungureanu, Andreea Ioana Lupitu, Cristian Moisa, Adrian Rivis, Lucian Octav Copolovici and Mariana-Atena Poiana
Sustainability 2020, 12(14), 5681; https://doi.org/10.3390/su12145681 - 15 Jul 2020
Cited by 12 | Viewed by 2706
Abstract
Blackberry pomace represents a valuable but underused byproduct of juice manufacturing. Its further applicability in various food systems is facilitated by detailed knowledge of its own bioactive potential. This study was focused on the investigation of the polyphenolic compound profile, total phenolic and [...] Read more.
Blackberry pomace represents a valuable but underused byproduct of juice manufacturing. Its further applicability in various food systems is facilitated by detailed knowledge of its own bioactive potential. This study was focused on the investigation of the polyphenolic compound profile, total phenolic and ascorbic acid content, as well as 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity of blackberries (Rubus fruticosus L.) coming from spontaneous flora of two different areas of Romania, Paltinis (Sibiu County) and Zugau (Arad County) and their fractions, juice and pomace, resulting from home-scale processing. To ensure a satisfactory shelf life, the blackberry pomace was subjected to convective drying (60 °C for 12 hours) and the impact of this treatment on the antioxidant properties was evaluated. No significant differences in the investigated characteristics according to the place of origin were recorded. However, a slight increase in the antioxidant properties of fruits and fractions from the Zugau region, characterized by higher temperatures and a lower precipitation regime, was noticed compared with samples derived from the Paltinis area. The drying of blackberry byproducts led to losses of 10–23% in the content of the investigated bioactive compounds and DPPH radical scavenging activity. A significant correlation between DPPH radical scavenging activity and the total phenolic content has been recorded. Our findings are of interest in blackberry selection to enhance the level of bioactive compounds in the targeted products. The obtained results confirm that the blackberry processing byproducts may be regarded as a promising source of high-quality bioactive compounds and a proven radical scavenging capacity, representing a starting point for further analyses. This study responds to a global issue regarding fruit byproduct management in order to ensure the sustainable development of a circular economy. Full article
(This article belongs to the Special Issue High Added-Value Molecules Recovered from Agri-Food Waste and by-Products)
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Review

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28 pages, 1452 KiB  
Review
Value-Added Metabolites from Agricultural Waste and Application of Green Extraction Techniques
by Muhammad Azri Amran, Kishneth Palaniveloo, Rosmadi Fauzi, Nurulhuda Mohd Satar, Taznim Begam Mohd Mohidin, Gokula Mohan, Shariza Abdul Razak, Mirushan Arunasalam, Thilahgavani Nagappan and Jaya Seelan Sathiya Seelan
Sustainability 2021, 13(20), 11432; https://doi.org/10.3390/su132011432 - 16 Oct 2021
Cited by 31 | Viewed by 7436
Abstract
The agricultural sector generates approximately 1300 million tonnes of waste annually, where up to 50% comprising of raw material are discarded without treatment. Economic development and rising living standards have increased the quantity and complexity of waste generated resulting in environmental, health and [...] Read more.
The agricultural sector generates approximately 1300 million tonnes of waste annually, where up to 50% comprising of raw material are discarded without treatment. Economic development and rising living standards have increased the quantity and complexity of waste generated resulting in environmental, health and economic issues. This calls for a greener waste management system such as valorization or recovery of waste into products. For successful implementation, social acceptance is an essential component with involvement of all local stakeholders including community to learn and understand the process and objective of the implementation. The agricultural waste product manufacturing industry is expected to increase with the growing demand for organic food. Thus, proper livestock and crop waste management is vital for environmental protection. It will be essential to successfully convert waste into a sustainable product that is reusable and circulated in the system in line with the green concept of circular economy. This review identifies the commercially produced crops by-product that have been considered for valorization and implemented green extraction for recovery. We highlight the importance of social acceptance and the economic value to agricultural waste recycling. Successful implementation of these technologies will overcome current waste management problems, reduce environmental impacts of landfills, and sustainability issue for farm owners. Full article
(This article belongs to the Special Issue High Added-Value Molecules Recovered from Agri-Food Waste and by-Products)
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18 pages, 732 KiB  
Review
Dietary Fiber and Prebiotic Compounds in Fruits and Vegetables Food Waste
by Corina Pop, Ramona Suharoschi and Oana Lelia Pop
Sustainability 2021, 13(13), 7219; https://doi.org/10.3390/su13137219 - 28 Jun 2021
Cited by 30 | Viewed by 10445
Abstract
The fruits and vegetables processing industry is one of the most relevant food by-products, displaying limited commercial exploitation entailing economic and environmental problems. However, these by-products present a considerable amount of dietary fiber and prebiotics with important biological activities, such as gut microbiota [...] Read more.
The fruits and vegetables processing industry is one of the most relevant food by-products, displaying limited commercial exploitation entailing economic and environmental problems. However, these by-products present a considerable amount of dietary fiber and prebiotics with important biological activities, such as gut microbiota modulation, lowering the glycemic load and replacing some unhealthy ingredients with an impact on food texture. Therefore, the international scientific community has considered incorporating their extracts or powders to preserve or fortify food products an area of interest, mainly because nowadays consumers demand the production of safer and health-promoting foods. In the present review, literature, mainly from the last 5 years, is critically analyzed and presented. A particular focus is given to utilizing the extracted dietary fibers in different food products and their impact on their characteristics. Safety issues regarding fruits and vegetables wastes utilization and anti-nutritional compounds impact were also discussed. Full article
(This article belongs to the Special Issue High Added-Value Molecules Recovered from Agri-Food Waste and by-Products)
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11 pages, 1119 KiB  
Review
Food Security during the Pandemic and the Importance of the Bioeconomy in the New Era
by Anca C. Farcas, Charis M. Galanakis, Carmen Socaciu, Oana L. Pop, Dorin Tibulca, Adriana Paucean, Mirela A. Jimborean, Melinda Fogarasi, Liana C. Salanta, Maria Tofana and Sonia A. Socaci
Sustainability 2021, 13(1), 150; https://doi.org/10.3390/su13010150 - 25 Dec 2020
Cited by 32 | Viewed by 7100
Abstract
One of the biggest challenges in managing the food sector during a pandemic crisis is sustaining a robust food security system and adopting the right strategies in correlating the consumers’ needs and requirements with those of food safety, the producers, the distribution chain, [...] Read more.
One of the biggest challenges in managing the food sector during a pandemic crisis is sustaining a robust food security system and adopting the right strategies in correlating the consumers’ needs and requirements with those of food safety, the producers, the distribution chain, the economic environment, and waste management. The restrictions on people’s global movement, commodities, and services and the measures taken to reduce the spread of COVID-19 have disrupted food environments around the world and forced us to collectively redesign and optimize our systems using existing resources from a more sustainable perspective. This paper offers an overview of the implications of COVID-19 for the food supply chain and discusses several potential strategies for tackling short- and long-term adverse effects resulting from the pandemic. Full article
(This article belongs to the Special Issue High Added-Value Molecules Recovered from Agri-Food Waste and by-Products)
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30 pages, 1641 KiB  
Review
Dietary Fiber from Underutilized Plant Resources—A Positive Approach for Valorization of Fruit and Vegetable Wastes
by Shehzad Hussain, Ivi Jõudu and Rajeev Bhat
Sustainability 2020, 12(13), 5401; https://doi.org/10.3390/su12135401 - 3 Jul 2020
Cited by 101 | Viewed by 16925
Abstract
Agri-food industries generate enormous amounts of fruit and vegetable processing wastes, which opens up an important research area aimed towards minimizing and managing them efficiently to support zero wastes and/or circular economy concept. These wastes remain underutilized owing to a lack of appropriate [...] Read more.
Agri-food industries generate enormous amounts of fruit and vegetable processing wastes, which opens up an important research area aimed towards minimizing and managing them efficiently to support zero wastes and/or circular economy concept. These wastes remain underutilized owing to a lack of appropriate processing technologies vital for their efficient valorization, especially for recovery of health beneficial bioactives like dietary fibers. Dietary fiber finds wide applications in food and pharmaceutical industries and holds high promise as a potential food additive and/or as a functional food ingredient to meet the techno-functional purposes important for developing health-promoting value-added products. Based on this, the present review has been designed to support ‘zero waste’ and ‘waste to wealth’ concepts. In addition, the focus revolves around providing updated information on various sustainability challenges incurred towards valorization of fruit and vegetable wastes for extraction of health promoting dietary fibers. Full article
(This article belongs to the Special Issue High Added-Value Molecules Recovered from Agri-Food Waste and by-Products)
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