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Valorization of Greenhouse Horticulture Waste from a Biorefinery Perspective

Greenhouse cultivation and harvesting generate considerable amounts of organic waste, including vegetal waste from plants and discarded products. This study evaluated the residues derived from tomato cultivation practices in Almería (Spain) as sugar-rich raw materials for biorefineries. First, ligno...

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Autores principales: Moreno, Antonio D., Duque, Aleta, González, Alberto, Ballesteros, Ignacio, Negro, María José
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8070379/
https://www.ncbi.nlm.nih.gov/pubmed/33918610
http://dx.doi.org/10.3390/foods10040814
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author Moreno, Antonio D.
Duque, Aleta
González, Alberto
Ballesteros, Ignacio
Negro, María José
author_facet Moreno, Antonio D.
Duque, Aleta
González, Alberto
Ballesteros, Ignacio
Negro, María José
author_sort Moreno, Antonio D.
collection PubMed
description Greenhouse cultivation and harvesting generate considerable amounts of organic waste, including vegetal waste from plants and discarded products. This study evaluated the residues derived from tomato cultivation practices in Almería (Spain) as sugar-rich raw materials for biorefineries. First, lignocellulose-based residues were subjected to an alkali-catalyzed extrusion process in a twin-screw extruder (100 °C and 6–12% (w/w) NaOH) to assess maximum sugar recovery during the subsequent enzymatic hydrolysis step. A high saccharification yield was reached when using an alkali concentration of 12% (w/w), releasing up to 81% of the initial glucan. Second, the discarded tomato residue was crushed and centrifuged to collect both the juice and the pulp fractions. The juice contained 39.4 g of sugars per 100 g of dry culled tomato, while the pulp yielded an extra 9.1 g of sugars per 100 g of dry culled tomato after an enzymatic hydrolysis process. The results presented herein show the potential of using horticulture waste as an attractive sugar source for biorefineries, including lignocellulose-based residues when effective fractionation processes, such as reactive extrusion technology, are available.
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spelling pubmed-80703792021-04-26 Valorization of Greenhouse Horticulture Waste from a Biorefinery Perspective Moreno, Antonio D. Duque, Aleta González, Alberto Ballesteros, Ignacio Negro, María José Foods Article Greenhouse cultivation and harvesting generate considerable amounts of organic waste, including vegetal waste from plants and discarded products. This study evaluated the residues derived from tomato cultivation practices in Almería (Spain) as sugar-rich raw materials for biorefineries. First, lignocellulose-based residues were subjected to an alkali-catalyzed extrusion process in a twin-screw extruder (100 °C and 6–12% (w/w) NaOH) to assess maximum sugar recovery during the subsequent enzymatic hydrolysis step. A high saccharification yield was reached when using an alkali concentration of 12% (w/w), releasing up to 81% of the initial glucan. Second, the discarded tomato residue was crushed and centrifuged to collect both the juice and the pulp fractions. The juice contained 39.4 g of sugars per 100 g of dry culled tomato, while the pulp yielded an extra 9.1 g of sugars per 100 g of dry culled tomato after an enzymatic hydrolysis process. The results presented herein show the potential of using horticulture waste as an attractive sugar source for biorefineries, including lignocellulose-based residues when effective fractionation processes, such as reactive extrusion technology, are available. MDPI 2021-04-09 /pmc/articles/PMC8070379/ /pubmed/33918610 http://dx.doi.org/10.3390/foods10040814 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Moreno, Antonio D.
Duque, Aleta
González, Alberto
Ballesteros, Ignacio
Negro, María José
Valorization of Greenhouse Horticulture Waste from a Biorefinery Perspective
title Valorization of Greenhouse Horticulture Waste from a Biorefinery Perspective
title_full Valorization of Greenhouse Horticulture Waste from a Biorefinery Perspective
title_fullStr Valorization of Greenhouse Horticulture Waste from a Biorefinery Perspective
title_full_unstemmed Valorization of Greenhouse Horticulture Waste from a Biorefinery Perspective
title_short Valorization of Greenhouse Horticulture Waste from a Biorefinery Perspective
title_sort valorization of greenhouse horticulture waste from a biorefinery perspective
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8070379/
https://www.ncbi.nlm.nih.gov/pubmed/33918610
http://dx.doi.org/10.3390/foods10040814
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