Abstract
Eucalyptus globulus Labill is an important raw material for pulpwood for which low lignin content and high S/G ratios are important parameters. This work shows a highly significant positive and strong correlation between S/G ratio and acid-soluble lignin (ASL) content among E. globulus trees. Although significant, the negative correlation between the S/G ratio and Klason lignin is weak, and there is no correlation with total lignin content. The Klason residue has a lower S/G ratio than that of the original wood. This suggests that the contribution of the S units to the solubilisation of lignin in acidic conditions is not limited to the S units but also to the G units. This effect becomes more pronounced as the percentage of S units increases.
Funding source: Fundação para a Ciência e a Tecnologia
Award Identifier / Grant number: Ana Alves, DL57/2016/CP1382/CT0005
Award Identifier / Grant number: Centro de Estudos Florestais [UIDB/00239/2020]
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This work was supported by the Fundação para a Ciência e a Tecnologia, I.P, through Centro de Estudos Florestais [UIDB/00239/2020]. The first author was supported by the Fundação para a Ciência e a Tecnologia, I.P, through a contract: DL57/2016/CP1382/CT0005.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- Original Articles
- Variation analyses of extractive contents by NIR-spectroscopy bring out the differences between agroforestry and forestry walnut (Juglans regia × nigra) trees
- Correlation between lignin content and syringyl-to-guaiacyl (S/G) ratio of Eucalyptus globulus wood
- Accelerated relaxation behavior during water desorption in the mechano-sorptive creep of wood: modeling and analysis based on the free volume concept and Kohlausch–Williams–Watts function
- Degradation of beech wood by Kretzschmaria deusta: its heterogeneity and influence on dynamic and static bending properties
- Performance improvement of poplar wood based on the synergies of furfurylation and polyethylene glycol impregnation
- Artificial lignification of a cellulose microfibril-based hydrogel and resulting effect on tensile properties
- Depolymerisation of kraft lignin to obtain high value-added products: antioxidants and UV absorbers
- A CP/MAS 13C NMR investigation of cellulose ultrastructure in traditional Chinese handmade papers
- Quality control of natural cork stoppers by image analysis and oxygen transmission rate
Articles in the same Issue
- Frontmatter
- Original Articles
- Variation analyses of extractive contents by NIR-spectroscopy bring out the differences between agroforestry and forestry walnut (Juglans regia × nigra) trees
- Correlation between lignin content and syringyl-to-guaiacyl (S/G) ratio of Eucalyptus globulus wood
- Accelerated relaxation behavior during water desorption in the mechano-sorptive creep of wood: modeling and analysis based on the free volume concept and Kohlausch–Williams–Watts function
- Degradation of beech wood by Kretzschmaria deusta: its heterogeneity and influence on dynamic and static bending properties
- Performance improvement of poplar wood based on the synergies of furfurylation and polyethylene glycol impregnation
- Artificial lignification of a cellulose microfibril-based hydrogel and resulting effect on tensile properties
- Depolymerisation of kraft lignin to obtain high value-added products: antioxidants and UV absorbers
- A CP/MAS 13C NMR investigation of cellulose ultrastructure in traditional Chinese handmade papers
- Quality control of natural cork stoppers by image analysis and oxygen transmission rate