Structural Characterization of the Milled-Wood Lignin Isolated from Sweet Orange Tree (Citrus sinensis) Pruning Residue

Rosado, Mario J.; Rencoret, Jorge; Gutiérrez Suárez, Ana; Río Andrade, José Carlos del; Ministerio de Ciencia e Innovación (España)

Structural Characterization of the Milled-Wood Lignin Isolated from Sweet Orange Tree (Citrus sinensis) Pruning Residue

12 páginas.- 2 figuras.- 4 tablas.- 29 referencias

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Main Authors:	Rosado, Mario J., Rencoret, Jorge, Gutiérrez Suárez, Ana, Río Andrade, José Carlos del
Other Authors:	Ministerio de Ciencia e Innovación (España)
Format:	artículo biblioteca
Language:	English
Published:	Multidisciplinary Digital Publishing Institute 2023-04-11
Subjects:	Orange tree pruning, Lignocellulose, Milled-wood lignin, 2D-NMR, Pyrolysis,
Online Access:	http://hdl.handle.net/10261/308899
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spelling	dig-irnas-es-10261-3088992023-05-15T12:43:01Z Structural Characterization of the Milled-Wood Lignin Isolated from Sweet Orange Tree (Citrus sinensis) Pruning Residue Rosado, Mario J. Rencoret, Jorge Gutiérrez Suárez, Ana Río Andrade, José Carlos del Ministerio de Ciencia e Innovación (España) Agencia Estatal de Investigación (España) Junta de Andalucía European Commission Ministerio de Ciencia, Innovación y Universidades (España) Rosado, Mario J. [0000-0001-6313-1890] Rencoret, Jorge [0000-0003-2728-7331] Gutiérrez Suárez, Ana [0000-0002-8823-9029] Río Andrade, José Carlos del [0000-0002-3040-6787] Orange tree pruning Lignocellulose Milled-wood lignin 2D-NMR Pyrolysis 12 páginas.- 2 figuras.- 4 tablas.- 29 referencias The pruning of sweet orange trees (Citrus sinensis) generates large amounts of lignocellulosic residue. Orange tree pruning (OTP) residue presents a significant lignin content (21.2%). However, there are no previous studies describing the structure of the native lignin in OTPs. In the present work, the “milled-wood lignin” (MWL) was extracted from OTPs and examined in detail via gel permeation chromatography (GPC), pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS), and two-dimensional nuclear magnetic resonance (2D-NMR). The results indicated that the OTP-MWL was mainly composed of guaiacyl (G) units, followed by syringyl (S) units and minor amounts of p-hydroxyphenyl (H) units (H:G:S composition of 1:62:37). The predominance of G-units had a strong influence on the abundance of the different linkages; therefore, although the most abundant linkages were β–O–4′ alkyl–aryl ethers (70% of total lignin linkages), the lignin also contained significant amounts of phenylcoumarans (15%) and resinols (9%), as well as other condensed linkages such as dibenzodioxocins (3%) and spirodienones (3%). The significant content of condensed linkages will make this lignocellulosic residue more recalcitrant to delignification than other hardwoods with lower content of these linkages. This research was funded by MCIN/AEI/ 10.13039/501100011033 and, as appropriate, by “ERDF A way of making Europe” (projects AGL2017-83036-R and PID2020-118968RB-I00) and the Regional Andalusian Government/FEDER (project P20_00017). M.J.R. acknowledges the Spanish Ministry of Science, Innovation and Universities for an FPI fellowship (PRE2018-083267). Peer reviewed 2023-05-15T12:43:01Z 2023-05-15T12:43:01Z 2023-04-11 artículo Polymers 15(8): 1840 (2023) http://hdl.handle.net/10261/308899 10.3390/polym15081840 2073-4360 en #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2017-83036-R/ES/LIGNINAS DE RESIDUOS LIGNOCELULOSICOS DE LA ACTIVIDAD AGRICOLA: ESTRUCTURA QUIMICA Y VALORIZACION/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-118968RB-I00/ES/LIGNINAS Y LIPIDOS: FUENTES RENOVABLES DE NUEVOS BIOPRODUCTOS/ info:eu-repo/grantAgreement/Junta de Andalucía/Plan Andaluz de Investigación, Desarrollo e Innovación (PAIDI 2020)/P20_00017 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PRE2018-083267 Publisher's version http://dx.doi.org/10.3390/polym15081840 Sí open Multidisciplinary Digital Publishing Institute
institution	IRNAS ES
collection	DSpace
country	España
countrycode	ES
component	Bibliográfico
access	En linea
databasecode	dig-irnas-es
tag	biblioteca
region	Europa del Sur
libraryname	Biblioteca del IRNAS España
language	English
topic	Orange tree pruning Lignocellulose Milled-wood lignin 2D-NMR Pyrolysis Orange tree pruning Lignocellulose Milled-wood lignin 2D-NMR Pyrolysis
spellingShingle	Orange tree pruning Lignocellulose Milled-wood lignin 2D-NMR Pyrolysis Orange tree pruning Lignocellulose Milled-wood lignin 2D-NMR Pyrolysis Rosado, Mario J. Rencoret, Jorge Gutiérrez Suárez, Ana Río Andrade, José Carlos del Structural Characterization of the Milled-Wood Lignin Isolated from Sweet Orange Tree (Citrus sinensis) Pruning Residue
description	12 páginas.- 2 figuras.- 4 tablas.- 29 referencias
author2	Ministerio de Ciencia e Innovación (España)
author_facet	Ministerio de Ciencia e Innovación (España) Rosado, Mario J. Rencoret, Jorge Gutiérrez Suárez, Ana Río Andrade, José Carlos del
format	artículo
topic_facet	Orange tree pruning Lignocellulose Milled-wood lignin 2D-NMR Pyrolysis
author	Rosado, Mario J. Rencoret, Jorge Gutiérrez Suárez, Ana Río Andrade, José Carlos del
author_sort	Rosado, Mario J.
title	Structural Characterization of the Milled-Wood Lignin Isolated from Sweet Orange Tree (Citrus sinensis) Pruning Residue
title_short	Structural Characterization of the Milled-Wood Lignin Isolated from Sweet Orange Tree (Citrus sinensis) Pruning Residue
title_full	Structural Characterization of the Milled-Wood Lignin Isolated from Sweet Orange Tree (Citrus sinensis) Pruning Residue
title_fullStr	Structural Characterization of the Milled-Wood Lignin Isolated from Sweet Orange Tree (Citrus sinensis) Pruning Residue
title_full_unstemmed	Structural Characterization of the Milled-Wood Lignin Isolated from Sweet Orange Tree (Citrus sinensis) Pruning Residue
title_sort	structural characterization of the milled-wood lignin isolated from sweet orange tree (citrus sinensis) pruning residue
publisher	Multidisciplinary Digital Publishing Institute
publishDate	2023-04-11
url	http://hdl.handle.net/10261/308899
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Structural Characterization of the Milled-Wood Lignin Isolated from Sweet Orange Tree (Citrus sinensis) Pruning Residue

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