Bioactive compounds from eusideroxylon zwageri and potoxylon melagangai extractives and its performance against pycnoporus coccineus and schizophyllum commune

Natural durability is defined as the ability of any species of wood to resists decay or being attacked by any biological degradation agents such as fungi, insects and marine borers. There are several factors that can attribute to the resistance of wood against degradation such as size and age of hea...

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Main Author:	Faiezah, Abdullah.
Format:	Thesis
Language:	English
Published:	2009
Subjects:	Q Science (General) QH Natural history
Online Access:	http://ir.unimas.my/id/eprint/28059/1/Faiezah.pdf
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id	my-unimas-ir.28059
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spelling	my-unimas-ir.280592023-03-27T07:43:21Z Bioactive compounds from eusideroxylon zwageri and potoxylon melagangai extractives and its performance against pycnoporus coccineus and schizophyllum commune 2009 Faiezah, Abdullah. Q Science (General) QH Natural history Natural durability is defined as the ability of any species of wood to resists decay or being attacked by any biological degradation agents such as fungi, insects and marine borers. There are several factors that can attribute to the resistance of wood against degradation such as size and age of heartwood, concentration and type of wood extractives and lignin content in the wood. The objectives of this study were to determine the organic chemical compositions in Eusideroxylon zwageri and Potoxylon melagangai extractives and to evaluate the ability of Pycnoporus coccineus and Schizophyllum commune to degrade E. zwageri and P. melagangai woods. The extractives were obtained from outer heartwood part of both wood species by Soxhlet extraction using acetone for 8 hours. The crude extracts were then subjected to sequential solvent fractionation using different solvent of increasing polarity. Biodegradation of wood was done by exposing wood meals to two white rot fungi namely P. coccineus and S. commune. Gas chromatography/mass spectroscopy (GC/ MS) analyses were conducted to determine and characterize the chemical compound constituents and compositions of acetone extracts, hexane and dichloromethane fractions from both exposed and unexposed samples. The average weight lossess of E. zwageri wood meals after exposure to P. coccineus and S. commune were 5.42% and 8.45%, respectively. While P. melagangai wood meals weight losses were avregaed at 7.16% and 8.62%, respectively after exposure to the same fungi. This study demonstrated that E. zwageri was more durable compared to P. melagangai. The extractives removed by acetone were averaged at 11.66% and 12.26% from E. zwageri and P. melagangai woods, respectively. The acetone extracts of E. zwageri was reduced to 7.95% and 4.46% after exposure to P. coccineus and S. commune, respectively. For P. melagangai acetone extracts reduced to 4.84% and 2.77% after exposure to the same fungi. Universiti Malaysia Sarawak (UNIMAS) 2009 Thesis http://ir.unimas.my/id/eprint/28059/ http://ir.unimas.my/id/eprint/28059/1/Faiezah.pdf text en validuser masters Universiti Malaysia Sarawak (UNIMAS) Faculty of Resource Science and Technology
institution	Universiti Malaysia Sarawak
collection	UNIMAS Institutional Repository
language	English
topic	Q Science (General) QH Natural history
spellingShingle	Q Science (General) QH Natural history Faiezah, Abdullah. Bioactive compounds from eusideroxylon zwageri and potoxylon melagangai extractives and its performance against pycnoporus coccineus and schizophyllum commune
description	Natural durability is defined as the ability of any species of wood to resists decay or being attacked by any biological degradation agents such as fungi, insects and marine borers. There are several factors that can attribute to the resistance of wood against degradation such as size and age of heartwood, concentration and type of wood extractives and lignin content in the wood. The objectives of this study were to determine the organic chemical compositions in Eusideroxylon zwageri and Potoxylon melagangai extractives and to evaluate the ability of Pycnoporus coccineus and Schizophyllum commune to degrade E. zwageri and P. melagangai woods. The extractives were obtained from outer heartwood part of both wood species by Soxhlet extraction using acetone for 8 hours. The crude extracts were then subjected to sequential solvent fractionation using different solvent of increasing polarity. Biodegradation of wood was done by exposing wood meals to two white rot fungi namely P. coccineus and S. commune. Gas chromatography/mass spectroscopy (GC/ MS) analyses were conducted to determine and characterize the chemical compound constituents and compositions of acetone extracts, hexane and dichloromethane fractions from both exposed and unexposed samples. The average weight lossess of E. zwageri wood meals after exposure to P. coccineus and S. commune were 5.42% and 8.45%, respectively. While P. melagangai wood meals weight losses were avregaed at 7.16% and 8.62%, respectively after exposure to the same fungi. This study demonstrated that E. zwageri was more durable compared to P. melagangai. The extractives removed by acetone were averaged at 11.66% and 12.26% from E. zwageri and P. melagangai woods, respectively. The acetone extracts of E. zwageri was reduced to 7.95% and 4.46% after exposure to P. coccineus and S. commune, respectively. For P. melagangai acetone extracts reduced to 4.84% and 2.77% after exposure to the same fungi.
format	Thesis
qualification_level	Master's degree
author	Faiezah, Abdullah.
author_facet	Faiezah, Abdullah.
author_sort	Faiezah, Abdullah.
title	Bioactive compounds from eusideroxylon zwageri and potoxylon melagangai extractives and its performance against pycnoporus coccineus and schizophyllum commune
title_short	Bioactive compounds from eusideroxylon zwageri and potoxylon melagangai extractives and its performance against pycnoporus coccineus and schizophyllum commune
title_full	Bioactive compounds from eusideroxylon zwageri and potoxylon melagangai extractives and its performance against pycnoporus coccineus and schizophyllum commune
title_fullStr	Bioactive compounds from eusideroxylon zwageri and potoxylon melagangai extractives and its performance against pycnoporus coccineus and schizophyllum commune
title_full_unstemmed	Bioactive compounds from eusideroxylon zwageri and potoxylon melagangai extractives and its performance against pycnoporus coccineus and schizophyllum commune
title_sort	bioactive compounds from eusideroxylon zwageri and potoxylon melagangai extractives and its performance against pycnoporus coccineus and schizophyllum commune
granting_institution	Universiti Malaysia Sarawak (UNIMAS)
granting_department	Faculty of Resource Science and Technology
publishDate	2009
url	http://ir.unimas.my/id/eprint/28059/1/Faiezah.pdf
_version_	1783728357506023424

Bioactive compounds from eusideroxylon zwageri and potoxylon melagangai extractives and its performance against pycnoporus coccineus and schizophyllum commune

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