Skip to main content

Advertisement

Official Journal of the Japan Wood Research Society

Journal of Wood Science Cover Image
We’d like to understand how you use our websites in order to improve them. Register your interest.

Vibrational property changes of spruce wood by impregnation with watersoluble extractives of pernambuco (Guilandina echinata Spreng.) II: structural analysis of extractive components

Abstract

Heartwood of pernambuco (Guilandina echinata Spreng, synCaesalpinia echinata Lam.), which has been used as material for violin bows, was extracted by soaking in water, and the obtained extractives were analyzed. The main components of the extractives were identified to be protosappanin B and brazilin. In particular, protosappanin B occupied about 40% of the pernambuco extractives. The loss tangent (tanδ) of spruce wood impregnated with protosappanin B decreased markedly, the same as that of specimens impregnated with extractives before being purified. It is expected that protosappanin B can make a contribution to the decrease in tanδ due to impregnation with extractives.

References

  1. 1.

    Sugiyama M, Matsunaga M, Minato K, Norimoto M (1994) Physical and mechanical properties of pernambuco (Guilandina echinata Spreng) used for violin bows (in Japanese). Mokuzai Gakkaishi 40:905–910

  2. 2.

    Matsunaga M, Sugiyama M, Minato K, Norimoto M (1996) Physical and mechanical properties required for violin bow materials. Holzforschung 50:511–517

  3. 3.

    Ono T, Norimoto M (1983) Study on Young's modulus and internal friction of wood in relation to the evaluation of wood for musical instruments. Jpn J Appl Phys 22:611–614

  4. 4.

    Norimoto M, Tanaka F, Ohgama T, Ikimune T (1986) Specific dynamic Young's modulus and internal friction of wood in the longitudinal direction. Wood Res Technol Notes 22:53–65

  5. 5.

    Matsunaga M, Minato K (1998) Physical and mechanical properties required for violin bow materials. II. Comparison of the processing properties and durability between pernambuco and substitutable wood species. J Wood Sci 44:142–146

  6. 6.

    Matsunaga M, Minato K, Nakatsubo F (1999) Vibrational property changes of spruce wood by impregnation with water-soluble extractives of pernambuco (Guilandina echinata Spreng.). J Wood Sci 45:470–474

  7. 7.

    Yano H, Yamada T, Minato K (1986) Change in acoustical properties of sitka spruce due to reaction with formaldehyde. Mokuzai Gakkaishi 32:984–989

  8. 8.

    Akitsu H, Norimoto M, Morooka T (1991) Vibrational properties of chemically modified wood (in Japanese). Mokuzai Gakkaishi 37:590–597

  9. 9.

    Craig JC, Naik AR, Pratt R, Johnson E, Bhacca NS (1965) Nuclear magnetic resonance spectra and stereochemistry of the antibacterial principle fromHaematoxylon braziletto. J Org Chem 30:1573–1576

  10. 10.

    Gilbody AW, Perkin WH, Yates T (1901) Brazilin and haematoxylin. Part I. J Chem Soc 79:1396–1411

  11. 11.

    Perkin WH, Ray JN, Robinson R (1928) Experiments on the synthesis of brazilin and haematoxylin and their derivatives. Part III. J Chem Soc 504–1513

  12. 12.

    Nagai M, Nagumo S (1986) Protosappanin B, a new dibenzoxocin derivative from sappan lignum. Heterocycles 24:601–605

  13. 13.

    Minato K, Sakai K, Matsunaga M, Nakatsubo F (1997) The vibrational properties of wood impregnated with extractives of some species of Leguminosae. Mokuzai Gakkaishi 43:1035–1037

  14. 14.

    Sakai K, Matsunaga M, Minato K, Nakatsubo F (1999) Effects of impregnation of simple phenolic and natural polycyclic compounds on physical properties of wood. J Wood Sci 45:227–232

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to Masahiro Matsunaga.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Matsunaga, M., Sakai, K., Kamitakahara, H. et al. Vibrational property changes of spruce wood by impregnation with watersoluble extractives of pernambuco (Guilandina echinata Spreng.) II: structural analysis of extractive components. J Wood Sci 46, 253–257 (2000). https://doi.org/10.1007/BF00776458

Download citation

Key words

  • Pernambuco
  • Extractives
  • Protosappanin B
  • Brazilin
  • Vibrational property