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The chemical characterisation of the maritime pine bark cultivated in Northern Portugal

2023Journal article Open access
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dc.contributor.authorBarros, Diana
dc.contributor.authorFernandes, Elia
dc.contributor.authorJesus, Meirielly
dc.contributor.authorBarros, Lillian
dc.contributor.authorAlonso-Esteban, José Ignacio
dc.contributor.authorPires, Preciosa
dc.contributor.authorVelho, Manuela Vaz
dc.date.accessioned2021-10-26T14:06:36Z
dc.date.available2021-10-26T14:06:36Z
dc.date.issued2023
dc.description.abstractMaritime pine, scientifically known as Pinus pinaster, holds a vital role in Iberian Peninsula forests, primarily as a source of wood for panels, paper, and cellulose production. Recently, there has been a growing interest in utilising agroforestry by-products to yield valuable chemicals for applications in various sectors, including the food, pharmaceutical, and bioenergy industries. This study aimed to assess the value of the primary by-product of Pinus pinaster from the Minho region of northwestern Portugal, i.e., the bark. The research extensively examined the bark’s chemical and thermal characteristics, including ash content, extractives, lignin, cellulose, hemicellulose, fatty acids, and mineral composition. Additionally, various analytical techniques like FTIR, SEM, DSC, DTG, and XRD were used to observe chemical structure differences. The results reveal that the Pinus pinaster bark primarily consists of lignin (51.15%) and holocellulose (46.09%), with extractives mainly soluble in toluene–ethanol, followed by water, and a small amount of them are soluble in ethanol. The bark contained around 0.44% ash, and heavy metals such as Cd and Pb were not found. During degradation, Pinus pinaster experienced a 10% mass loss at 140 °C. In terms of crystallinity, holocellulose and cellulose showed similar percentages at approximately 25.5%, while α-cellulose displayed the highest crystallinity index at 41%.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBarros, Diana; Fernandes, Elia; Jesus, Meirielly; Barros, Lillian; Alonso-Esteban, José Ignacio; Pires, Preciosa; Velho, Manuela Vaz (2023). The chemical characterisation of the maritime pine bark cultivated in Northern Portugal. Plants. eISSN 2223-7747. 12:23, p. 1-19pt_PT
dc.identifier.doi10.3390/plants12233940
dc.identifier.eissn2223-7747
dc.identifier.urihttp://hdl.handle.net/10198/24109
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPI
dc.subjectBark
dc.subjectPinus pinaster Aiton subsp. atlantica
dc.subjectExtractives
dc.subjectHolocellulose
dc.subjectCellulose
dc.subjectFTIR
dc.titleThe chemical characterisation of the maritime pine bark cultivated in Northern Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titlePlantspt_PT
person.familyNameBarros
person.givenNameLillian
person.identifier469085
person.identifier.ciencia-id9616-35CB-D001
person.identifier.orcid0000-0002-9050-5189
person.identifier.ridJ-3600-2013
person.identifier.scopus-author-id35236343600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication3af07ffe-f914-48ba-a5d5-efcf70fdce01
relation.isAuthorOfPublication.latestForDiscovery3af07ffe-f914-48ba-a5d5-efcf70fdce01

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