Recovery and evaluation of cellulose from agroindustrial residues of corn, grape, pomegranate, strawberry-tree fruit and fava

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, cel...

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Bibliographic Details
Published in:	Bioresources and bioprocessing Vol. 8; no. 1; p. 25
Main Authors:	Vallejo, Mariana, Cordeiro, Rachel, Dias, Paulo A. N., Moura, Carla, Henriques, Marta, Seabra, Inês J., Malça, Cândida Maria, Morouço, Pedro
Format:	Journal Article
Language:	English
Published:	Singapore Springer Singapore 02-04-2021 Springer Nature B.V SpringerOpen
Subjects:	Agricultural wastes Agroindustrial residue valorization ATR-FTIR Biochemical Engineering Biomedical materials Cellulose Cellulose fibers Chemistry Chemistry and Materials Science Corn Crystalline cellulose Deforestation Environmental Engineering/Biotechnology Fibers Food industry Fourier transforms Grapes Hemicellulose Industrial and Production Engineering Infrared analysis Infrared spectroscopy Morphology Pulp Residues Scanning electron microscopy Solvent extraction Stereomicroscopy Strawberries TGA–DSC Thermodynamic properties Thermogravimetric analysis Wood pulp TGA–DSC Agroindustrial residue valorization Solvent extraction ATR-FTIR Cellulose
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Summary:	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 (T Onset of 307.17 °C, TD of 330.31 °C, and Δ H of 306.04 kJ/kg) suitable for biomedical applications.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2197-4365 2197-4365
DOI:	10.1186/s40643-021-00377-3