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Biological Degradation of Chinese Fir with Trametes Versicolor (L.) Lloyd

Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) has been an important afforestation species in northeast China. It has obvious defects of buckling and cracking easily, which are caused by its chemical components. Trametes versicolor (L.) Lloyd, a white-rot fungus, can decompose the cellulose, he...

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Autores principales: Chen, Meiling, Wang, Chuangui, Fei, Benhua, Ma, Xinxin, Zhang, Bo, Zhang, Shuangyan, Huang, Anmin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5551877/
https://www.ncbi.nlm.nih.gov/pubmed/28773191
http://dx.doi.org/10.3390/ma10070834
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author Chen, Meiling
Wang, Chuangui
Fei, Benhua
Ma, Xinxin
Zhang, Bo
Zhang, Shuangyan
Huang, Anmin
author_facet Chen, Meiling
Wang, Chuangui
Fei, Benhua
Ma, Xinxin
Zhang, Bo
Zhang, Shuangyan
Huang, Anmin
author_sort Chen, Meiling
collection PubMed
description Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) has been an important afforestation species in northeast China. It has obvious defects of buckling and cracking easily, which are caused by its chemical components. Trametes versicolor (L.) Lloyd, a white-rot fungus, can decompose the cellulose, hemicellulose, and lignin in the wood. White-rot fungus was used to biologically degrade Chinese fir wood. The effects of different degradation time on the Chinese fir wood’s mechanical properties, micromorphology, chemical components, and crystallinity were studied. The results showed that the heartwood of Chinese fir was more durable than the sapwood and the durability class of Chinese fir was III. Trametes versicolor (L.) Lloyd had a greater influence on the mechanical properties (especially with respect to the modulus of elasticity (MOE)) for the sapwood. Trametes versicolor (L.) Lloyd degraded Chinese fir and colonized the lumen of various wood cell types in Chinese fir, penetrated cell walls via pits, caused erosion troughs and bore holes, and removed all cell layers. The ability of white-rot fungus to change the chemical composition mass fraction for Chinese fir was: hemicellulose > lignin > cellulose. The durability of the chemical compositions was: lignin > cellulose > hemicellulose. The crystallinity of the cellulose decreased and the mean size of the ordered (crystalline) domains increased after being treated by white-rot fungus.
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spelling pubmed-55518772017-08-11 Biological Degradation of Chinese Fir with Trametes Versicolor (L.) Lloyd Chen, Meiling Wang, Chuangui Fei, Benhua Ma, Xinxin Zhang, Bo Zhang, Shuangyan Huang, Anmin Materials (Basel) Article Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) has been an important afforestation species in northeast China. It has obvious defects of buckling and cracking easily, which are caused by its chemical components. Trametes versicolor (L.) Lloyd, a white-rot fungus, can decompose the cellulose, hemicellulose, and lignin in the wood. White-rot fungus was used to biologically degrade Chinese fir wood. The effects of different degradation time on the Chinese fir wood’s mechanical properties, micromorphology, chemical components, and crystallinity were studied. The results showed that the heartwood of Chinese fir was more durable than the sapwood and the durability class of Chinese fir was III. Trametes versicolor (L.) Lloyd had a greater influence on the mechanical properties (especially with respect to the modulus of elasticity (MOE)) for the sapwood. Trametes versicolor (L.) Lloyd degraded Chinese fir and colonized the lumen of various wood cell types in Chinese fir, penetrated cell walls via pits, caused erosion troughs and bore holes, and removed all cell layers. The ability of white-rot fungus to change the chemical composition mass fraction for Chinese fir was: hemicellulose > lignin > cellulose. The durability of the chemical compositions was: lignin > cellulose > hemicellulose. The crystallinity of the cellulose decreased and the mean size of the ordered (crystalline) domains increased after being treated by white-rot fungus. MDPI 2017-07-20 /pmc/articles/PMC5551877/ /pubmed/28773191 http://dx.doi.org/10.3390/ma10070834 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chen, Meiling
Wang, Chuangui
Fei, Benhua
Ma, Xinxin
Zhang, Bo
Zhang, Shuangyan
Huang, Anmin
Biological Degradation of Chinese Fir with Trametes Versicolor (L.) Lloyd
title Biological Degradation of Chinese Fir with Trametes Versicolor (L.) Lloyd
title_full Biological Degradation of Chinese Fir with Trametes Versicolor (L.) Lloyd
title_fullStr Biological Degradation of Chinese Fir with Trametes Versicolor (L.) Lloyd
title_full_unstemmed Biological Degradation of Chinese Fir with Trametes Versicolor (L.) Lloyd
title_short Biological Degradation of Chinese Fir with Trametes Versicolor (L.) Lloyd
title_sort biological degradation of chinese fir with trametes versicolor (l.) lloyd
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5551877/
https://www.ncbi.nlm.nih.gov/pubmed/28773191
http://dx.doi.org/10.3390/ma10070834
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