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Title: Recovery and evaluation of cellulose from agroindustrial residues of corn, grape, pomegranate, strawberry-tree fruit and fava
Authors: Vallejo, Mariana
Cordeiro, Rachel 
Dias, Paulo A. N. 
Moura, Carla 
Henriques, Marta
Seabra, Inês J. 
Malça, Cândida Maria
Morouço, Pedro
Keywords: Agroindustrial residue valorization; Cellulose; Solvent extraction; ATR-FTIR; TGA–DSC
Issue Date: 2021
Project: POCI-01-0145-FEDER-023423) 
CENTRO- 01-0145-FEDER-023631 SoSValor 
Serial title, monograph or event: Bioresources and Bioprocessing
Volume: 8
Issue: 1
Abstract: Considering the expected increasing demand for cellulose fibers in the near future and that its major source is wood pulp, alternative sources such as vegetable wastes from agricultural activities and agro-food industries are currently being sought to prevent deforestation. In the present study, cellulose was successfully isolated from six agroindustrial residues: corncob, corn husk, grape stalk, pomegranate peel, marc of strawberry-tree fruit and fava pod. Cellulose fibers were characterized by Fourier-transform infrared spectroscopy, thermogravimetric analysis, stereomicroscopy and scanning electron microscopy (SEM). Despite the evident morphological differences among the extracted celluloses, results revealed similar compositional and thermal properties with the wood-derived commercial microcrystalline cellulose used as a control. Trace amounts of lignin or hemicellulose were detected in all cellulose samples, with the exception of corncob cellulose, that exhibited the greatest extraction yield (26%) and morphological similarities to wood-derived microcrystalline cellulose, visible through SEM. Furthermore, corncob cellulose was found to have thermal properties (TOnset of 307.17 °C, TD of 330.31 °C, and ΔH of 306.04 kJ/kg) suitable for biomedical applications. [Figure not available: see fulltext.]
ISSN: 2197-4365
DOI: 10.1186/s40643-021-00377-3
Rights: openAccess
Appears in Collections:I&D CIEPQPF - Artigos em Revistas Internacionais

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