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Abbravation: Journal of Wood Science

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SpringerOpen

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DOI

10.1016/0040-6090(95)06862-7

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1611-4663

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Extractives relating to heartwood color changes in

Authors: F Ishiguri S Maruyama K Takahashi Z Abe S Yokota M Andoh N Yoshizawa
Publish Date: 2003/04
Volume: 49, Issue: 2, Pages: 135-
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Abstract

 Sugi green logs with red or black heartwood were smokeheated and the changes in the color of the heartwood after ultraviolet UV λ = 365 nm radiation exposure were then observed After UV radiation exposure the redness and yellowness increased in both the red and black heartwoods whereas the brightness decreased In the black heartwood the resulting color turned from yellowish white to reddish brown Reddening in black heartwood after exposure to a combination of smoke heating and UV radiation is thought to be due to a decrease in brightness and an increase in both redness and yellowness However the degree of change in heartwood color by UV radiation exposure was not greatly affected by smokeheating treatments of various lengths When methanol extracts were fractionated and exposed to UV radiation the yellowness increased in the nhexanesoluble portion and the redness increased in the acetonesoluble fractions from the nhexaneinsoluble portion These results suggest that the nhexanesoluble fraction contains the substances that allow heartwood color to change to yellow after UV radiation exposure and the acetonesolublefraction from the nhexaneinsoluble portion contains the substances that allow it to change to red


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  1. Analysis on residue formation during wood liquefaction with polyhydric alcohol
  2. Bending creep behavior of wood under cyclic moisture changes
  3. Effects of urea treatment on litter decomposition in Pasania edulis forest soil
  4. Effects of five additive materials on mechanical and dimensional properties of wood cement-bonded boards
  5. Bearing properties of engineered wood products I: effects of dowel diameter and loading direction
  6. Screening method for wood extractives: direct cellulose thin-layer chromatography plate
  7. Load-carrying capacity of steel-to-timber joints with a pretensioned bolt
  8. Cultivation of Pleurotus eryngii on umbrella plant ( Cyperus alternifolius ) substrate
  9. Enhancement of saccharification by overexpression of poplar cellulase in sengon
  10. Film formation and some structural features of hemicellulose fractions from Pinus densiflora leaves
  11. Effect of element type on the internal bond quality of wood-based panels determined by three methods
  12. Comparative study of organic solvent-soluble and water-soluble lipophilic extractives from wheat straw 2: spectroscopic and thermal analysis
  13. Contribution of lignin to the reactivity of wood in chemical modifications II: influence of delignification on reaction with vaporous formaldehyde
  14. Water removal of wet veneer by roller pressing
  15. Wavelength dependence of machining performance in UV-, VIS- and NIR-laser cutting of wood
  16. Essential oil from the leaves of Cryptomeria japonica acts as a silverfish ( Lepisma saccharina ) repellent and insecticide
  17. Chemical composition, antioxidant and antibacterial activities of extracts from Schinus molle wood branch growing in Egypt
  18. Quantification of knots in dimension lumber using a single-pass X-ray radiation
  19. Development of an air-injection press for preventing blowout of particleboard IV: effects of air-injection conditions on board performance and formaldehyde emission
  20. Vapor phase reaction of wood with maleic anhydride (I): dimensional stability and durability of treated wood
  21. Applied data for modeling the behavior in cyclic torsion of beams in glued-laminated wood: influence of amplitude
  22. Potassium distribution in black heartwood of sugi ( Cryptomeria japonica ) I: Localization in axial parenchyma cells
  23. Upgrading of urea formaldehyde-bonded reed and wheat straw particleboards using silane coupling agents
  24. Resistance of gamma-irradiated sapwood of Cryptomeria japonica to biological attacks
  25. The smell and odorous components of dried shiitake mushroom, Lentinula edodes I: relationship between sensory evaluations and amounts of odorous components
  26. Mechanism of mercerization revealed by X-ray diffraction
  27. Cesium adsorption from aqueous solutions onto Japanese oak charcoal III: effects of water-extraction treatment
  28. Radial variations of wood properties in Casuarina equisetifolia growing in Bangladesh
  29. Improvement of fire retardancy of plywood by incorporating boron or phosphate compounds in the glue
  30. Stress wave velocity, basic density, and compressive strength in 34-year-old Pinus merkusii planted in Indonesia
  31. Use of hemicellulase in sequence with hydrogen peroxide and laccase for improvement of teak veneer surface color
  32. Antioxidant compounds from Eucalyptus grandis biomass by subcritical liquid water extraction
  33. Shiitake ( Lentinula edodes ) cultivation in sawdust media consisting of kunugi ( Quercus acutissima ) mixed with sugi ( Cryptomeria japonica ): optimization of gaseous phase rate in media by three-phase-structure analysis
  34. Radial variations of vibrational properties of three tropical woods

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