Relationships between Hemicellulose Composition and Lignin Structure in Woods. (2nd January 2016)

• Record Type: Journal Article
• Authors: Huang, Yu; Wang, Linshan; Chao, Yuesheng; Nawawi, Deded Sarip; Akiyama, Takuya; Yokoyama, Tomoya; Matsumoto, Yuji
• Is Part Of: Journal of wood chemistry and technology. Volume 36:Number 1(2016)
• Page Start: 9
• Page End: 15
• Publication Date: 2016-01-02
• Subjects: Hardwood -- hemicellulose composition -- lignin structure -- softwood -- syringyl ratio; Wood -- Chemistry -- Periodicals; Wood; Wood -- Chemistry; Periodicals; 674.13
• DOI: 10.1080/02773813.2015.1039543
• Languages: English
• ISSNs: 0277-3813

Abstract

Abstract : The composition and absolute amount of neutral sugars were determined for 48 hardwood species (including 17 hardwoods of genera Acacia, 14 hardwoods of genera Eucalyptus, and 17 hardwoods of other genera) and 14 softwood species by alditol-acetate method, and their relationships to the syringyl ratio (syringyl/(syringyl+guaiacyl)) of lignin, which was determined by nitrobenzene oxidation, was investigated. In the hardwood species, an increase in the syringy ratio of lignin correlated with a tendency toward increased xylose/glucose, rhamnose/glucose, and arabinose/glucose ratios. However, the absolute amount of glucose in hardwood was maintained in a small range (0.4–0.5 g in 1 g sample), independent of changes in the syringyl ratio. In the softwood species, with increasing lignin content, the mannose/glucose ratio decreased, but the absolute amount of glucose remained almost constant. In both hardwood and softwood species, a strong correlation was suggested between lignin, indicated by higher syringy ratio, and hemicellulose, indicated by higher xylan/mannan ratio.