Chemical composition changes in eucalyptus and pinus woods submitted to heat treatment

被引：151

作者：

Brito, J. O. ^{[1
]}

Silva, F. G. ^{[1
]}

Leao, M. M. ^{[1
]}

Almeida, G. ^{[1
]}

机构：

[1] Univ Sao Paulo ESALQ USP, Luiz Queiroz Coll Agr, Dept Forest Sci, Lab Chem Cellulose & Energy, BR-13418900 Piracicaba, SP, Brazil

来源：

BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 18期

基金：

巴西圣保罗研究基金会;

关键词：

Thermally modified wood; Chemical composition; Eucalyptus saligna; Pinus caribaea var. hondurensis;

D O I：

10.1016/j.biortech.2008.03.069

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This study investigated the influence of heat treatment on the chemical composition of Eucalyptus saligna and Pinus caribaea var. hondurensis woods to understand its role in wood processing. E. saligna and P. caribaea var. hondurensis woods were treated in a laboratorial electric furnace at 120, 140, 160 and 180 degrees C to induce their heat treatment. The chemical composition of the resulting products and those from original wood were determined by gas chromatography. Eucalyptus and Pinus showed a significant reduction in arabinose, manose, galactose and xylose contents when submitted to increasing temperatures. No significant alteration in glucose content was observed. Lignin content, however, increased during the heat process. There was a significant reduction in extractive content for Eucalyptus. On the other hand, a slight increase in extractive content has been determined for the Pinus wood. and that only for the highest temperature. These different behaviors can be explained by differences in chemical constituents between softwoods and hardwoods. The results obtained in this study provide important information for future research and utilization of thermally modified wood. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：8545 / 8548

页数：4

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