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Resource Extraction from Agricultural Products/Waste: 2nd Edition
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Resource Extraction from Agricultural Products/Waste: 2nd Edition

A special issue of Resources (ISSN 2079-9276).

Deadline for manuscript submissions: 31 January 2025 | Viewed by 2509

Special Issue Editors

Dr. Maria Dimopoulou

E-Mail Website
Guest Editor
School of Health and Life Sciences, Teesside University, Middlesbrough, UK
Interests: food sustainability; agricultural waste extraction; polysaccharide extraction; physicochemical characterisation; functional applications
Special Issues, Collections and Topics in MDPI journals
Dr. Athanasios Angelis Dimakis

E-Mail Website
Guest Editor
Department of Chemical Sciences, School of Applied Sciences, University of Huddersfield, Huddersfield, UK
Interests: industrial ecology; waste management; circular economy; life cycle assessment
Special Issues, Collections and Topics in MDPI journals
Dr. Antonia Vyrkou

E-Mail Website
Guest Editor Assistant
Department of Chemical Sciences, School of Applied Sciences, University of Huddersfield, Huddersfield, UK
Interests: life cycle assessment; waste management; valorisation of agricultural waste
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Welcome to this Special Issue dedicated to the multifaceted realm of resource extraction from agricultural products and waste. This Special Issue delves into the intricate processes involved in the isolation and purification of valuable chemical constituents inherent in agricultural resources, particularly in the often-overlooked agricultural byproducts.

Beyond merely exploring extraction methodologies, this Special Issue seeks to underscore the significance of agricultural resources as reservoirs of valuable compounds waiting to be harnessed. This Special Issue focuses on both conventional extraction techniques and the latest innovations and environmentally friendly approaches that align with the principles of green chemistry by promoting the broader implications of sustainable resource utilisation in the context of circular economy principles.

Moreover, we welcome contributions that address the crucial aspect of scale-up and process commercialisation, paving the way for the practical implementation of extraction techniques in industrial settings. By bridging the gap between research and industrial applications, we aspire to facilitate the integration of efficient extraction processes into real-world scenarios, thereby maximising the utilisation of agricultural resources and minimising waste along with insights into their functional applications.

We also invite submissions that explore separation and purification techniques tailored to the specific characteristics of agricultural resources. By elucidating efficient separation processes, we aim to enhance the downstream processing of agricultural materials, unlocking their full potential for various industrial applications.

This Special Issue aims to foster a deeper understanding of the diverse array of agricultural resources and waste streams, positioning them as valuable reservoirs of chemical constituents with immense potential and thus not merely as byproducts. By emphasising the resource perspective, we hope to catalyse discussions and innovations that contribute to the sustainable utilisation of agricultural resources, thereby promoting environmental stewardship and economic viability.

Dr. Maria Dimopoulou
Dr. Athanasios Angelis Dimakis
Guest Editors

Dr. Antonia Vyrkou
Guest Editor Assistant

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. Resources 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 1600 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

  • resources
  • extraction techniques: conventionality, green impacts, and sustainability
  • separation and purification methodologies
  • agricultural resources/wastes
  • industrial applications

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Related Special Issue

Published Papers (2 papers)

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Research

17 pages, 1529 KiB  
Article
Post-Extractivism and Bioeconomy: An Experimental Analysis of Combustion and Pyrolysis Processes as Alternatives to Add Value to Agro-Residues (Coffee Husks) Generated in Farmer Cooperatives of the Ecuadorian Amazon
by Mario A. Heredia Salgado, Ina Säumel and Luís A. C. Tarelho
Resources 2024, 13(10), 142; https://doi.org/10.3390/resources13100142 - 14 Oct 2024
Viewed by 735
Abstract
A post-extractivist development model for communities in the Amazon that is not based on non-renewable resource extraction demands the study and demonstration, in the field, of alternative economic activities that add value to currently generated residual biomass. Following the principles of bioeconomy, this [...] Read more.
A post-extractivist development model for communities in the Amazon that is not based on non-renewable resource extraction demands the study and demonstration, in the field, of alternative economic activities that add value to currently generated residual biomass. Following the principles of bioeconomy, this study presents an experimental analysis of a retort burner and a pilot-scale auger-type pyrolysis reactor used to convert coffee husks generated in a collection and post-harvesting center of a farmer’s cooperative into thermal energy and biochar, respectively. This study shows that coffee husks, whether used as feedstock for combustion or pyrolysis processes, can supply the thermal energy required by the post-harvesting processes. The combustion or pyrolysis of coffee husks avoids its accumulation and decomposition while replacing fossil fuels used in post-harvesting operations, reducing costs and making farmers independent of fossil fuel subsidies. Unlike combustion (11,029.4 mg/Nm3), the CO concentration in the flue gas during the pyrolysis process was 458.3 mg/Nm3, which is below the eco-design standard of 500 mg/Nm3. According to the European Biochar Certificate, carbon content (67.4 wt%) and H/Corg, O/Corg (0.6 and 0.1, respectively) are within the typical values of biochars used for soil amendment and carbon sequestration. Nonetheless, the concentration of polycyclic aromatic hydrocarbons must be assessed to fully regard this material as biochar. Finally, further studies are required to assess the ability of cooperatives to generate and trade carbon credits linked with the application of biochar in their cropping systems. Full article
(This article belongs to the Special Issue Resource Extraction from Agricultural Products/Waste: 2nd Edition)
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11 pages, 2867 KiB  
Article
Characterization of Yield and Physico-Chemical Parameters of Selected Wild Indigenous Fruits in Rwanda
by Gaudence Nishimwe, Suzana Augustino, Anna Sigrun Dahlin and Fidèle Niyitanga
Resources 2024, 13(7), 101; https://doi.org/10.3390/resources13070101 - 22 Jul 2024
Cited by 1 | Viewed by 1358
Abstract
A study was carried out to assess the physico-chemical characteristics of wild fruits: Myrianthus holstii and Garcinia buchananii, consumed by rural communities in Rwanda. Although the species have been prioritized for domestication in the country, very little information has been documented on [...] Read more.
A study was carried out to assess the physico-chemical characteristics of wild fruits: Myrianthus holstii and Garcinia buchananii, consumed by rural communities in Rwanda. Although the species have been prioritized for domestication in the country, very little information has been documented on their yield potential, morphological traits, and nutritional compositions. Data were collected from nine fruiting trees for each species in the Bugesera and Nyamagabe districts. All fruits per tree were counted and 10 fruits were harvested for characterization. The proximate composition, vitamins, and minerals were analyzed using Association of Official Analytical Chemists (AOAC) methods. Analyses of inferential statistics were performed to detect differences in means among the fruits from different populations. The highest yield (279 kg/tree) for M. holstii was recorded in the Musebeya population while the highest (15.12 kg/tree) for G. buchananii was recorded in the Juru populations. The quantities of vitamins A and C in M. holstii fruits ranged from 0.92 mg/100 g to 0.93 mg/100 g and from 19.22 mg/100 g to 19.94 mg/100 g, respectively. The quantities of vitamins A and C in G. buchananii fruits ranged from 0.56 mg/100 g to 0.95 mg/100 g and 33.82 mg/100 g to 34.84 mg/100 g, respectively. The most abundant mineral element recorded in this study was iron (15.95 mg/100 g) found in the M. holstii species and contributing 159.5% of the recommended daily allowance. The results obtained in this work suggest the potential value of G. buchananii and M. holstii for the development of novel products in the food industry. The findings also offer opportunities for tree selection to support their domestication and to reduce pressure on the remaining population in the wild. Full article
(This article belongs to the Special Issue Resource Extraction from Agricultural Products/Waste: 2nd Edition)
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