[논문]Anatomical and Physical Characteristics of Korean Paulownia (Paulownia coreana) Branch Wood

Yue, Qi; Jang, Jae-Hyuk; Park, Se-Hwi; Kim, Nam-Hun

doi:10.5658/wood.2014.42.5.510

Anatomical and Physical Characteristics of Korean Paulownia (Paulownia coreana) Branch Wood 원문보기

목재공학 = Journal of the Korean wood science and technology, v.42 no.5, 2014년, pp.510 - 515

Yue, Qi (College of Forest and Environmental Sciences, Kangwon National University) , Jang, Jae-Hyuk (College of Forest and Environmental Sciences, Kangwon National University) , Park, Se-Hwi (College of Forest and Environmental Sciences, Kangwon National University) , Kim, Nam-Hun (College of Forest and Environmental Sciences, Kangwon National University)

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The anatomical and physical properties of tension wood (TW), opposite wood (OW) and lateral wood (LW) in the branches of Korean paulownia (Paulownia coreana) were compared. The diameter of TW vessels was larger than that of OW and LW vessels. The most distinctive feature of TW fibers was the presence of a gelatinous layer (G-fiber). The cell wall of TW fibers was nearly three times as thick as that of OW and LW. TW differed from OW and LW in density, X-ray diffraction pattern and shear and compressive strengths. The results obtained in this study showed clear differences in the anatomical and physical properties of TW, OW and LW of Paulownia coreana branch woods.

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문제 정의

This study was carried out to investigate the anatomical and physical characteristics of branch wood of Paulownia coreana which is a fast-growing wood species. The observation showed TW contained abundant G-fibers and that LW also contained G-fibers but in smaller numbers.
However, with increasing use of trunks, branches are generally wasted. To evaluate the use of this branch wood resource from Paulownia coreana trees more efficiency, this study was undertaken to investigate its anatomical and physical characteristics.

제안 방법

Samples with dimension of 5 × 5 × 5 mm3 were prepared, air-dried, coated with gold using Gressington sputter coater (ULVAC G-50DA, Japan) and observed with a scanning electron microscope (JSM-5510, Japan).

대상 데이터

Branch woods (13-year-old) of Paulownia coreana were obtained from the campus Forest (127.75°, 37.87°) of Kangwon National University in South Korea.
This study was carried out with the support from Kangwon National University in South Korea. Qi Yue also sincerely thanks the ACES-KNU scholarship of Kangwon National University for financial support from 2012.

이론/모형

2001), dehydrated in a graded series of alcohol (50%, 70%, 90%, 95% and 99%), mounted in Canada balsam and observed with an optical microscope (Nikon Eclipse E600). The anatomical characteristics, such as number and diameter of vessels, height and width of rays, fiber length and structure, were determined according to the IAWA hardwood feature list (IAWA Committee 1989) using Total Imaging Solution (IMT, I-solution Lite). For each character, fifty random measurements were taken for each character to obtain a mean value.

성능/효과

However, the oven-dry density of TW, OW and LW were essentially similar. The results obtained in our study showed that the anatomical and physical properties of Paulownia coreana branch wood displayed some differences among TW, OW and LW. Branch wood is considered a low value wood, but this study provides information which can prove valuable in utilizing branch wood as an eco-friendly material in areas such as paper making, nanocellulose, food and cosmetics.

참고문헌 (22)

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Clair, B., Almeras T., Sugiyama, J. 2006. Compression stress in opposite wood of angiosperms: observations in chestnut, mani and poplar. Ann For Sci 63: 507-510.

상세보기
Clair, B., Ruelle, J., Beauchene, J., Prevost, M.F., Fournier, M.. 2006. Tension wood and opposite wood in 21 tropical rainforest species about the presence of G-layer. IAWA J 27: 329-338.
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상세보기
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상세보기
Fisher, J.B., Stevenson, J.W. 1981. Occurrence of reaction wood in branches of dicotyledons and its role in tree architecture. Bot Gaz 142: 82-95.

상세보기
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상세보기
Jourez, B., Riboux, A., Leclercq, A. 2001. Anatomical characteristics of tension wood and opposite wood in young inclined stem of Poplar (Populus euramericana cv 'Ghjoy'). IAWA J 22: 133-157.

상세보기
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원문보기 상세보기
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Lee, S.W., Hwang, W.J., Kim, N.H. 1997. Some anatomical characteristics in tension and opposite woods of Quercus mongolica Fischer. Journal of Korean Wood Science and Technology 25(3): 43-49.
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상세보기
Muller, M., Burghammer, M., Sugiyama, J. 2006. Direct investigation of the structural properties of tension wood cellulose microfibrils using microbeam X-ray fibre diffraction. Holzforschung 60: 474-479.

상세보기
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상세보기
Pramod, S., Rao, S.K., Sundberg, A. 2013. Structural, histochemical and chemical characterization of normal, tension and opposite wood of Subabul (Leucaena leucocephala (lam.) De wit.). Wood Science Technology 47: 777-796.

상세보기
Timell, T.E. 1986. Compression wood in gymnosperms. Springer, Heidelberg.
Tsoumis, G.T. 1991. Science and technology of wood. Van Nostrand Reinhold, New York, 111-160.
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상세보기
Wardrop, A.B. 1964. The reaction anatomy of arborescent angiosperms. Academic press, New York London, 405-456.

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Anatomical and Physical Characteristics of Korean Paulownia (Paulownia coreana) Branch Wood 원문보기

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Anatomical and Physical Characteristics of Korean Paulownia (Paulownia coreana) Branch Wood 원문보기

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