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Traditional treatment of Malaysian bamboos: Resistance towards white rot fungus and durability in service

Pakistan journal of biological sciences, 2000-09, Vol.3 (9), p.1453-1458

ISSN: 1028-8880 ;EISSN: 1812-5735 ;DOI: 10.3923/pjbs.2000.1453.1458

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  • Title:
    Traditional treatment of Malaysian bamboos: Resistance towards white rot fungus and durability in service
  • Author: Ashaari, Z ; Mamat, N. (Putra Univ. (Malaysia). Dept. of Forest Production)
  • Subjects: ALMIDON ; AMIDON ; BAMBOOS ; BAMBOU ; BAMBUES ; BAMBUSA ; BIODETERIORATION ; BIODETERIORO ; DENDROCALAMUS ; DISEASE RESISTANCE ; GIGANTOCHLOA ; MALAISIE ; MALASIA ; MALAYSIA ; PODREDUMBRES ; POURRITURE ; PYCNOPORUS ; REMOJO ; RESISTANCE AUX MALADIES ; RESISTENCIA A LA ENFERMEDAD ; ROTS ; SOAKING ; STARCH ; TREMPAGE
  • Is Part Of: Pakistan journal of biological sciences, 2000-09, Vol.3 (9), p.1453-1458
  • Description: Deterioration of Malaysian bamboos against biodeterioration agents and their service life have not been widely explored. This paper reveals the effect of traditional treatment on the resistance of selected bamboos towards white rot fungus and their durability in service. Bamboo culms of Dendrocalamus asper (Buluh betong), Bambusa vulgaris var. Striata (Buluh kuning) and Gigantochloa wrayi) were soaked in running water for 2 and 3 weeks. The Striata (Buluh kuning) and Gigantochloa wrayi (Buluh beti) were soaked in running water for 2 and 3 weeks. The untreated culm served as control for comparison. Each treatment group comprises 45 samples per species. The starch content of the bamboo was chemically analysed using UV- spectrophotometer. Higher starch content was found in untreated than the water-treated ones. The starch content reduced as the soaking period increases. The starch content for D. asper was 2.78% w/w, for G. wrayi was 2.28% and for B. vulgaris was 1.85%. After 3 weeks of soaking water, the starch reduced to 0.7%, 0.93% and 0.73%, respectively. The weight loss of bamboo culms caused white rot fungus (Pycnoporous sanguineus) and their service life were evaluated in accordance with ASTM standards. The average weight loss for the untreated bamboo ranged from 13.2-15.9% and these values decreases as the soaking period increases. Deterioration of bamboo causes by decay and termite can be seen as early as three months of exposure in the ground. Decay on water-treated bamboo was much slower than on untreated. But for termite attacks, there is not definite trend. Among the three species. G. wrayi sustained the longest service life when in contact with ground.
  • Language: English
  • Identifier: ISSN: 1028-8880
    EISSN: 1812-5735
    DOI: 10.3923/pjbs.2000.1453.1458
  • Source: Geneva Foundation Free Medical Journals at publisher websites
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