湖南耐寒桉树主要化学性质的分析  

Primary Chemical Characters of Cold-resistant Eucalyptus Introduced to Hunan Province

作　　者：陈茜文[1] 谷文众[2] 杨焰[1] 朱林峰[1] 李志辉[3] 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004 [2]中南林业科技大学生命科学与技术学院,湖南长沙410004 [3]中南林业科技大学资源与环境学院,湖南长沙410004

出　　处：《中南林业科技大学学报》2007年第5期127-131,共5页Journal of Central South University of Forestry & Technology

基　　金：湖南省自然科学基金项目(97JJY-2014)的部分研究内容

摘　　要：对湖南引种的邓恩桉、多枝桉、赤桉、巨桉、广叶桉、樟脑桉、小果灰桉等7种桉树进行了化学成分与热值的测定．结果表明：其化学性质与国内引种的桉树相比略有差异，纤维素含量较低，在41％～45％之间，木素含量较高，在24％～30％之间，多戊糖含量较高，在20％～29％之间，有机抽提物、冷水抽提物、热水抽提物含量较低，1%NaOH抽提物含量较高；其热值分析结果与煤、石油其它燃料相比，热值较小，灰分少，没有硫磺等污染物．This article analyzes the chemical characters, and measures the caloric, of Eucalyptus dunnii; E. viminalis; E. camaldulensis; E. grandis ; E. amplifolia ; E, camphore and E. propinqua. Results show that ; the cellulose content of these 7 types of Eucalyptus is low, about 41%-45%; their lignin content high, about 24%-30%; their pentosus content also high, about 20%- 29%; the contents of their organic extractions, cold water extractions and hot water extractions are all low; hut the content of 1% NaOH extractions is high and the contents of benzene and ethanol extractions are higher than those of broadleaf species. The heat values of E. camaldulensis and E. propinqua are high; next follows E. viminalis. Compared with other fuels like coal or petroleum, their heat values are low with little ash and no sulphur pollutants.

关 键 词：林产化工 桉树 化学性质 热值 

分 类 号：S792.39[农业科学—林木遗传育种] S781.4[农业科学—林学]