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Distribution and characterisation of discolouring substances in norway spruce (Picea abies L. Karst.) pulp wood stored under water sprinkling

Holzforschung, 2006, Vol.60 (1), p.93-98 [Peer Reviewed Journal]

2008 INIST-CNRS ;ISSN: 0018-3830 ;ISSN: 1437-434X ;EISSN: 1437-434X ;DOI: 10.1515/HF.2006.016 ;CODEN: HOLZAZ

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  • Title:
    Distribution and characterisation of discolouring substances in norway spruce (Picea abies L. Karst.) pulp wood stored under water sprinkling
  • Author: HILDEN, Lars ; JING ZHANG ; PERSSON, Erik ; JOHANSSON, Gunnar ; BRÄNDSTRÖM, Jonas
  • Subjects: Applied sciences ; Degradation and preservation ; Exact sciences and technology ; Polymer industry, paints, wood ; Properties and testing ; Wood ; Wood. Paper. Non wovens
  • Is Part Of: Holzforschung, 2006, Vol.60 (1), p.93-98
  • Description: Abstract Discolouration of wood raw material during wet storage has a notable negative effect on the quality of the final product. In this study, fluorescence microscopy was used to investigate the spatial distribution of discolouring substances in water-sprinkled Norway spruce pulpwood. Water-sprinkled wood was characterised by the presence of discolouring substances on the pit membranes of wood cells. In vitro model studies on the interaction between a model bark substance (tannic acid) and torus constituents support the hypothesis that pectic structures facilitate the allocation of bark substances on pit membranes. Applied pectinase or tannase could not remove the discolouring substances from pit membranes. Manganese peroxidase had a minor but documented effect. The effect of manganese peroxidase, as well as HCl/vanillin labelling, indicated that the discolouring substance may be condensed tannins.
  • Publisher: Berlin: de Gruyter
  • Language: English
  • Identifier: ISSN: 0018-3830
    ISSN: 1437-434X
    EISSN: 1437-434X
    DOI: 10.1515/HF.2006.016
    CODEN: HOLZAZ
  • Source: Alma/SFX Local Collection
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