Micro- and nano-structures of cellulose from eggplant plant (Solanum melongena L) agricultural residue

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Output type: Journal article

UM6P affiliated Publication?: Yes

Author list: Bahloul A., Kassab Z., El Bouchti M., Hannache H., Qaiss A.E.K., Oumam M., El Achaby M.

Publisher: Elsevier: 12 months

Publication year: 2021

Journal: Carbohydrate Polymers (0144-8617)

Volume number: 253

ISSN: 0144-8617

eISSN: 1879-1344

URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85094205815&origin=inward

Languages: English (EN-GB)

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Currently, agriculture sector produces enormous quantity of residues, creating severe environmental problems. These agricultural residues are rich in lignocellulosic fibers, making them sustainable sources to produce high added-value materials. This investigation aims to transform the eggplant plant residue (EPR) into purified cellulose microfibers (CMF) and cellulose nanocrystals (CNC). CMF with a yield of 54 %, diameter of 13.6 μm and crystallinity of 71 % were successfully obtained from raw EPR using alkali and bleaching treatments. By subjecting CMF to phosphoric and sulfuric acid hydrolysis, phosphorylated (P-CNC) and sulfated (S-CNC) were produced. P-CNC and S-CNC exhibited an aspect ratio of 89.4 and 74.2, zeta potential value of – 39.4 and – 28.7 mV, surface charge density of 116.7 and 218.2 mmol/kg cellulose and a crystallinity of 73 % and 80 %, respectively. Herein, the obtained cellulosic structures with excellent properties could be used in various applications, such as bio-derived fillers for polymer composites development.


Acid hydrolysis, Agricultural residues, Cellulose microfibers, Cellulose nanocrystals, Eggplant


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Last updated on 2021-11-10 at 23:18