Logo do repositório
 
Publicação

Low-Quality Coffee Beans Used as a Novel Biomass Source of Cellulose Nanocrystals

2025-12-18Artigo científico Acesso aberto
Ver registo simples
dc.contributor.authorPaulino, Graziela dos Santos
dc.contributor.authorPereira, Júlia Santos
dc.contributor.authorMarques, Clara Suprani
dc.contributor.authorVitalino, Kyssila Vitória Reis
dc.contributor.authorSouza, Victor G. L.
dc.contributor.authorAguilar, Ananda Pereira
dc.contributor.authorAlmeida, Lucas Filipe
dc.contributor.authorde Oliveira, Taíla Veloso
dc.contributor.authorRibon, Andréa de Oliveira Barros
dc.contributor.authorFerreira, Sukarno Olavo
dc.contributor.authorMoura, Eveline Teixeira Caixeta
dc.contributor.authorSilva, Deusanilde de Jesus
dc.contributor.authorMendes, Tiago Antônio de Oliveira
dc.contributor.institutionDQ - Departamento de Química
dc.contributor.institutionMEtRICS - Centro de Engenharia Mecânica e Sustentabilidade de Recursos
dc.contributor.pblMDPI - Multidisciplinary Digital Publishing Institute
dc.date.accessioned2026-02-12T10:55:01Z
dc.date.available2026-02-12T10:55:01Z
dc.date.issued2025-12-18
dc.descriptionPublisher Copyright: © 2025 by the authors.
dc.description.abstractMost polymeric plastics used as food packaging are obtained from petroleum or made with non-biodegradable synthetic molecules, which slowly degrade and leach into the environment, resulting in the accumulation of microplastics along the trophic chains. To mitigate these impacts, biodegradable packaging derived from agro-industrial biomass residues has emerged as a promising alternative. In this study, bio-based methylcellulose films reinforced with cellulose nanocrystals (CNCs) extracted from low-quality coffee beans were developed and fully characterized. The extracted CNCs presented a needle-like morphology, with an average height of 7.27 nm and a length of 221.34 nm, with 65.75% crystallinity, were stable at pH 7–8, and presented thermogravimetric mass loss of 8.0%. Methylcellulose films containing 0.6% w/w of CNC were produced by casting and characterized in terms of thermal, mechanical, and optical properties. Notably, the incorporation of CNCs resulted in significantly more flexible and less rigid films, as evidenced by the higher elongation at break (57.90%) and lower Young’s modulus (0.0015 GPa) compared to neat methylcellulose film. The tensile strength was not affected (p > 0.05). Additionally, the MCNC 0.6% films effectively blocked UV light in the 200–300 nm range without compromising transparency. Altogether, these findings underscore the MCNC 0.6% film as a flexible, biodegradable packaging material suitable for food industry application.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent24
dc.format.extent3584657
dc.identifier.doi10.3390/resources14120191
dc.identifier.issn2079-9276
dc.identifier.otherPURE: 152910084
dc.identifier.otherPURE UUID: 18b55525-2c6e-413b-8fa6-1b775f508638
dc.identifier.otherScopus: 105025759960
dc.identifier.otherWOS: 001648661900001
dc.identifier.urihttp://hdl.handle.net/10362/200314
dc.identifier.urlhttps://www.scopus.com/pages/publications/105025759960
dc.identifier.urlhttps://www.webofscience.com/wos/woscc/full-record/WOS:001648661900001
dc.language.isoeng
dc.peerreviewedyes
dc.subjectAcid hydrolysis
dc.subjectAgro-industrial waste
dc.subjectBioplastics
dc.subjectCrystallinity
dc.subjectMethylcellulose
dc.subjectNature and Landscape Conservation
dc.subjectManagement, Monitoring, Policy and Law
dc.titleLow-Quality Coffee Beans Used as a Novel Biomass Source of Cellulose Nanocrystalsen
dc.title.subtitleExtraction and Application in Sustainable Packagingen
dc.typejournal article
degois.publication.firstPage1
degois.publication.issue12
degois.publication.lastPage24
degois.publication.titleResources
degois.publication.volume14
dspace.entity.typePublication
rcaap.rightsopenAccess

Ficheiros

Principais
A mostrar 1 - 1 de 1
Miniatura
Nome:
Paulino_et_al._2025_..pdf
Tamanho:
3.42 MB
Formato:
Adobe Portable Document Format
Ver/Abrir

Coleções

Home collection (FCT)