Enzymatically assisted isolation of high-quality cellulose nanoparticles from water hyacinth stems

被引：29

作者：

Juarez-Luna, Gregorio N. ^{[1
]}

Favela-Torres, Ernesto ^{[1
]}

Quevedo, Ivan R. ^{[2
]}

Batina, Nikola ^{[3
]}

机构：

[1] UAM I, CBS, Dept Biotecnol, Av San Rafael Atlixco 186, Mexico City 09340, DF, Mexico

[2] Univ Iberoamer Ciudad Mexico UIA, DIQIA, Prolongac Paseo Reforma 880, Mexico City 01219, DF, Mexico

[3] UAM I, Dept Quim, Lab Nanotecnol & Ingn Mol, CBI, Av San Rafael Atlixco 186, Mexico City 09340, DF, Mexico

来源：

CARBOHYDRATE POLYMERS | 2019年 / 220卷

关键词：

Cellulose nanoparticles; Cellulose nanocrystals; Cellulase complex; Water hyacinth stems; Enzymatic hydrolysis; AFM; XRD; NANOCRYSTALLINE CELLULOSE; EXTRACTION; FIBERS; NANOCELLULOSE; NANOWHISKERS; REINFORCEMENT; NANOFIBERS;

D O I：

10.1016/j.carbpol.2019.05.058

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

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.

引用

页码：110 / 117

页数：8

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