Automated quantitative analysis of wood carbohydrates by borate complex ion exchange chromatography

Sinner, M.; Simatupang, M. H.; Dietrichs, H. H.

doi:10.1007/bf00353480

Cited by 86 publications

(24 citation statements)

References 11 publications

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“…The reaction was performed at 105 °C in a 30 m crocheted Teflon coil of 0.3 mm inner diameter. This enabled the subsequent detection of sugars at 560 nm (Sinner et al 1975;Sinner and Puls 1978). Data were processed using Dionex Chromeleon software.…”

Section: Chemical Analysismentioning

confidence: 99%

Analysis of Dimensional Stability of Thermally Modified Wood Affected by Re-Wetting Cycles

Čermák¹,

Rautkari²,

Horáček³

et al. 2015

BioResources

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The dimensional stability of thermally modified wood exposed to several wetting-drying cycles was analyzed. Specimens of dimensions 15×15 ×15 mm were thermally modified at 180 and 200 °C. The mass loss and chemical composition of the wood were determined in order to evaluate the effect and degree of modification. Afterwards, the radial, tangential, and volumetric swelling, anti-swelling efficiency, water absorption, water repellence efficiency, and mass loss due to wetting-drying cycles were determined and compared. The specimen's mass tended to decrease with each additional rewetting cycle. Additional extractives that were formed via thermal decomposition leached out during wetting cycles. Thermal modification positively affected the dimensional stability of all investigated species. The wood's swelling was reduced, a result attributed to hemicellulose degradation. Dimensional stability was improved by 24 to 30% following mild treatment and by 26 to 54% following more severe treatment. When specimens were exposed to six consecutive rewetting cycles, the swelling of the modified wood increased, whereas it slightly decreased for the control (hornification). The effective dimensional stability of thermally modified wood was reduced by 34 and 28.4% for beech, 47 and 19.6% for poplar, and 19.3 and 24.5% for spruce compared to the initial anti-swelling efficiency following the first wetting cycle.

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Section: Chemical Analysismentioning

confidence: 99%

Analysis of Dimensional Stability of Thermally Modified Wood Affected by Re-Wetting Cycles

Čermák¹,

Rautkari²,

Horáček³

et al. 2015

BioResources

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“…Lignin content was determined as hydrolysis residue (Willför et al 2009) and acid-soluble lignin was measured by UV-spectroscopy (ls205 nm) according to Tappi 250 (2005). (Sinner et al 1975;Sinner and Puls 1978;Willför et al 2009). …”

Section: Chemical Analysismentioning

confidence: 99%

Effect of Physisporinus vitreus on wood properties of Norway spruce. Part 2: Aspects of microtensile strength and chemical changes

et al. 2011

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The biotechnological application of the white rot fungus Physisporinus vitreus named ''bioincising'' is currently being investigated for permeability improvement of Norway spruce (Picea abies (L.) Karst.) wood. During short-term (-9 weeks) incubation, fungal activity induces degradation of pit membranes and a simultaneous alteration of the tracheid cell wall structure. In Part 1 of this article series, the occurrence of selective delignification and simultaneous degradation was shown by UV-microspectrophotometry (UMSP). Moreover, significant reduction of Brinell hardness was recorded after 7 and 9 weeks incubation. For a better understanding of the chemical alterations in the wood constituents and the corresponding changes of mechanical properties due to fungal activity, we applied microtensile tests on thin strips that were prepared from the surface of incubated Norway spruce wood. Indications for the occurrence of selective delignification and simultaneous degradation were evident. Determination of lignin content and carbohydrate analysis by borate anion exchange chromatography confirmed the results. The present study verifies the findings from Part 1 of this article series and from previously conducted microscopic investigations. Now, the degradation characteristics of P. vitreus are established and the bioincising process can be further optimized with higher reliability.

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“…were analyzed by borate complex ion exchange chromatography (Sinner et al 1975) using a copper 2,2-bicinchoninate reagent for detection .…”

Section: Carbohydrate Analysis Monosaccharides In the Hydrolyzatesmentioning

confidence: 99%

The hydrolysis of steamed birchwood hemicellulose by enzymes produced byTrichoderma reesei andAspergillus awamori

Poutanen

Puls²,

Linko

1986

Appl Microbiol Biotechnol

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Automated quantitative analysis of wood carbohydrates by borate complex ion exchange chromatography

Cited by 86 publications

References 11 publications

Analysis of Dimensional Stability of Thermally Modified Wood Affected by Re-Wetting Cycles

Analysis of Dimensional Stability of Thermally Modified Wood Affected by Re-Wetting Cycles

Effect of Physisporinus vitreus on wood properties of Norway spruce. Part 2: Aspects of microtensile strength and chemical changes

The hydrolysis of steamed birchwood hemicellulose by enzymes produced byTrichoderma reesei andAspergillus awamori

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