Physicochemical characterization of hemicelluloses from bamboo (Phyllostachys pubescens Mazel) stem

被引：94

作者：

Peng, Hong ^{[1
]}

Wang, Na ^{[1
]}

Hu, Zhengrong ^{[1
]}

Yu, Ziping ^{[1
]}

Liu, Yuhuan ^{[1
]}

Zhang, Jinsheng ^{[1
]}

Ruan, Roger ^{[1
,2
,3
]}

机构：

[1] Nanchang Univ, Minist Educ, Biomass Engn Res Ctr, Nanchang 330047, Jiangxi, Peoples R China

[2] Univ Minnesota, Ctr Biorefining, St Paul, MN 55108 USA

[3] Univ Minnesota, Dept Bioprod & Biosyst Engn, St Paul, MN 55108 USA

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2012年 / 37卷 / 01期

关键词：

Bamboo stem; Hemicelluloses; Structure; Morphological properties; SUGARCANE BAGASSE; SOLUBLE HEMICELLULOSES; LIGNIN; FTIR; ULTRASOUND; PYROLYSIS; WOOD;

D O I：

10.1016/j.indcrop.2011.11.031

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In this paper, hemicelluloses from bamboo (Phyllostachys pubescens Mazel) stem aged six months were sequentially extracted with hot water, 2% KOH, and 5% NaOH. The water-soluble hemicelluloses HI, and four alkali-soluble hemicellulosic fractions H-2, H-3, H-4 and H-5 were obtained, achieving a total yield of 59.60% based on the original hemicelluloses. Sugar composition analysis showed that the hemicelluloses were mainly composed of xylose (44.39-72.71%), arabinose (26.36-51.87%), ribose (0.93-2.72%), and uronic acid (0.29-5.27%). The structures of the hemicelluloses were determined to be mainly arabinoxylan, using the FT-IR and NMR techniques. The AFM images of fraction H-3 revealed a distribution of spherical nanoparticles with different sizes, while the fraction H-2 had helix rod and random coil feature. The SEM characterizations indicated that the fraction H-1 displayed spherical particles while the fraction H-3 had mainly flat particles at high magnification. Thermal stability was also analyzed using TG-DTG method and first-order kinetics model. (c) 2011 Elsevier B.V. All rights reserved.

引用

页码：41 / 50

页数：10

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