期刊
CARBOHYDRATE POLYMERS
卷 220, 期 -, 页码 110-117出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2019.05.058
关键词
Cellulose nanoparticles; Cellulose nanocrystals; Cellulase complex; Water hyacinth stems; Enzymatic hydrolysis; AFM; XRD
资金
- Mexican Council for Science and Technology (CONACyT) [24711, INFR-2016-01-270227, 266265]
- Posgrado en Biotecnologia [001466]
High quality cellulose nanoparticles (CNP) were isolated from water hyacinth stem cellulose (Cel-WH) extracted via successive thermochemical and alkaline-peroxide treatments, and further enzymatically hydrolysed using the commercial cellulase complex, NS22086, at 50 degrees C. The maximum CNP concentration was reached after 120 min of enzymatic hydrolysis, with a hydrodynamic diameter in the order of 200-250 nm and an increase of 5% in crystallinity as compared with Cel-WH. The obtained rod-shaped cellulose nanocrystals, as revealed by atomic force microscopy (AFM), exhibited a nominal diameter of 15.6-29.4 nm, a length of 56-184.8 nm, and a height of 2.85-6.43 nm, indicating a low tendency to form aggregates. In the present study, it was found that water hyacinth stems are a valuable source for the isolation of high-quality CNP using an environmentally friendly procedure, with potential applications in nanomedicine and nanopharmacology.
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