Influence of heat treatment medium on fungal resistance of beech wood
Hydrothermal treatment of beech wood (Fagus orientalis) performed in acidic, neutral and alkaline buffered mediums in 160 and 180°C. White rot fungi (Coriolus versicolor) and brown rot fungi (Coniophora puteana) were used to determine the influence of heat treatment mediums on the behaviour of fungal resistance. White rot of wood digest lignin rather than cellulose; while brown rot digests the cellulose, but leave lignin behind. Results showed different behaviour of resistance against white and brown rot fungi. Heat treated specimens in acidic buffer medium showed the least weight loss in exposure to brown rot, but the weight loss caused by white rot fungi were even more than untreated samples. Heat treatment in neutral and alkaline buffer mediums caused less weight losses and nearly similar resistance behaviour to both fungi. Heat treatment of wood in acidic buffer medium lead to increase in crystallinity index and higher rate of lignin. Whereas the neutral and alkaline buffers controlled the carbohydrate degradation, considerably. Considering the decay mechanism of white and brown rot fungi, it can be concluded that specimen heat treated in acidic buffer had the highest rate of lignin that made it favorable for white rot fungi. But their low rate of carbohydrate made it resistant against brown rot fungi.
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dig-cirad-fr-5694312024-03-14T07:12:00Z http://agritrop.cirad.fr/569431/ http://agritrop.cirad.fr/569431/ Influence of heat treatment medium on fungal resistance of beech wood. Talaei Aisona, Karimi Ali N, Thévenon Marie-France. 2013. In : 44th IRG Annual Meeting, Stockholm, Sweden, 16-20 June 2013. IRG. s.l. : s.n., 1-12. IRG Annual Meeting. 44, Stockholm, Suède, 16 Juin 2013/20 Juin 2013. Influence of heat treatment medium on fungal resistance of beech wood Talaei, Aisona Karimi, Ali N Thévenon, Marie-France eng 2013 s.n. 44th IRG Annual Meeting, Stockholm, Sweden, 16-20 June 2013 K50 - Technologie des produits forestiers J12 - Manutention, transport, stockage et conservation des produits forestiers Hydrothermal treatment of beech wood (Fagus orientalis) performed in acidic, neutral and alkaline buffered mediums in 160 and 180°C. White rot fungi (Coriolus versicolor) and brown rot fungi (Coniophora puteana) were used to determine the influence of heat treatment mediums on the behaviour of fungal resistance. White rot of wood digest lignin rather than cellulose; while brown rot digests the cellulose, but leave lignin behind. Results showed different behaviour of resistance against white and brown rot fungi. Heat treated specimens in acidic buffer medium showed the least weight loss in exposure to brown rot, but the weight loss caused by white rot fungi were even more than untreated samples. Heat treatment in neutral and alkaline buffer mediums caused less weight losses and nearly similar resistance behaviour to both fungi. Heat treatment of wood in acidic buffer medium lead to increase in crystallinity index and higher rate of lignin. Whereas the neutral and alkaline buffers controlled the carbohydrate degradation, considerably. Considering the decay mechanism of white and brown rot fungi, it can be concluded that specimen heat treated in acidic buffer had the highest rate of lignin that made it favorable for white rot fungi. But their low rate of carbohydrate made it resistant against brown rot fungi. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/569431/1/document_569431.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html |
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K50 - Technologie des produits forestiers J12 - Manutention, transport, stockage et conservation des produits forestiers K50 - Technologie des produits forestiers J12 - Manutention, transport, stockage et conservation des produits forestiers |
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K50 - Technologie des produits forestiers J12 - Manutention, transport, stockage et conservation des produits forestiers K50 - Technologie des produits forestiers J12 - Manutention, transport, stockage et conservation des produits forestiers Talaei, Aisona Karimi, Ali N Thévenon, Marie-France Influence of heat treatment medium on fungal resistance of beech wood |
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Hydrothermal treatment of beech wood (Fagus orientalis) performed in acidic, neutral and alkaline buffered mediums in 160 and 180°C. White rot fungi (Coriolus versicolor) and brown rot fungi (Coniophora puteana) were used to determine the influence of heat treatment mediums on the behaviour of fungal resistance. White rot of wood digest lignin rather than cellulose; while brown rot digests the cellulose, but leave lignin behind. Results showed different behaviour of resistance against white and brown rot fungi. Heat treated specimens in acidic buffer medium showed the least weight loss in exposure to brown rot, but the weight loss caused by white rot fungi were even more than untreated samples. Heat treatment in neutral and alkaline buffer mediums caused less weight losses and nearly similar resistance behaviour to both fungi. Heat treatment of wood in acidic buffer medium lead to increase in crystallinity index and higher rate of lignin. Whereas the neutral and alkaline buffers controlled the carbohydrate degradation, considerably. Considering the decay mechanism of white and brown rot fungi, it can be concluded that specimen heat treated in acidic buffer had the highest rate of lignin that made it favorable for white rot fungi. But their low rate of carbohydrate made it resistant against brown rot fungi. |
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conference_item |
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K50 - Technologie des produits forestiers J12 - Manutention, transport, stockage et conservation des produits forestiers |
author |
Talaei, Aisona Karimi, Ali N Thévenon, Marie-France |
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Talaei, Aisona Karimi, Ali N Thévenon, Marie-France |
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Talaei, Aisona |
title |
Influence of heat treatment medium on fungal resistance of beech wood |
title_short |
Influence of heat treatment medium on fungal resistance of beech wood |
title_full |
Influence of heat treatment medium on fungal resistance of beech wood |
title_fullStr |
Influence of heat treatment medium on fungal resistance of beech wood |
title_full_unstemmed |
Influence of heat treatment medium on fungal resistance of beech wood |
title_sort |
influence of heat treatment medium on fungal resistance of beech wood |
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http://agritrop.cirad.fr/569431/ http://agritrop.cirad.fr/569431/1/document_569431.pdf |
work_keys_str_mv |
AT talaeiaisona influenceofheattreatmentmediumonfungalresistanceofbeechwood AT karimialin influenceofheattreatmentmediumonfungalresistanceofbeechwood AT thevenonmariefrance influenceofheattreatmentmediumonfungalresistanceofbeechwood |
_version_ |
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