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Chemical-mechanical damage caused by the brown-rot fungus Gloeophyllum trabeum (Pers.) Murrill on Pinus pseudostrobus Lindl. wood
Introduction: Wood is susceptible to be used as a carbon source by various fungal species damaging the wood, by exposing the wood to different environmental conditions. Its durability has been categorized according to its weight loss, without considering the decrease of the physicochemical...
Autores principales: | , , , , , |
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Formato: | Online Artículo |
Lenguaje: | spa |
Publicado: |
Universidad Autónoma Chapingo
2021
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Materias: | |
Acceso en línea: | https://revistas.chapingo.mx/forestales/article/view/r.rchscfa.2020.05.033 https://dx.doi.org/10.5154/r.rchscfa.2020.05.033 |
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author | Días-Rivera, Eduardo Montejo-Mayo, Wilber Martínez-Pacheco, Mauro Munro-Rojas, Abril Ambriz-Parra, Enrique Velázquez-Becerra, Crisanto |
author_facet | Días-Rivera, Eduardo Montejo-Mayo, Wilber Martínez-Pacheco, Mauro Munro-Rojas, Abril Ambriz-Parra, Enrique Velázquez-Becerra, Crisanto |
author_sort | Días-Rivera, Eduardo |
collection | Revista Chapingo Serie Ciencias Forestales y del Ambiente |
description | Introduction: Wood is susceptible to be used as a carbon source by various fungal species damaging the wood, by exposing the wood to different environmental conditions. Its durability has been categorized according to its weight loss, without considering the decrease of the physicochemical and mechanical properties inherent to the weight loss.
Objective: To evaluate how the weight loss in Pinus pseudostrobus Lindl. wood exposed to brown-rot fungi Gloeophyllum trabeum (Pers.) Murrill affects the physicochemical and mechanical properties.
Materials and methods: Sawn timber pieces of P. pseudostrobus were inoculated with G. trabeum. Periodically (zero, three, six and nine months) and with the help of a universal testing machine, parallel compression (PC), static bending (SB) and perpendicular compression to the grain (CPG) were evaluated, and holocellulose, cellulose and lignin were quantified.
Results and discussion: After nine months of interaction with G. trabeum, the pieces of wood were resistant to degradation, considering only weight loss. However, the chemical-mechanical properties evaluated showed that the fungus made a thinning and breakdown of the tissue cells in the wood that induced a significant decrease in the values of SB (100 to 56 N∙mm -2 ) and CPG (42.2 to 20.2 N∙mm -2 ), which reduced its resistance to mechanical stress. Such damage is not reflected in the material’s aesthetic, which is alarming, since the common user of the pinewood could not notice the problem.
Conclusions: The wood that has been exposed to fungal degradation is significantly compromised in its mechanical properties, disabling it for construction, because the chemical properties show us that the fungus causes low resistance to mechanical stress by diminishing SB and CPG. |
format | Online Article |
id | oai_chapingo-forestales-_article-289 |
institution | Universidad Autónoma Chapingo |
language | spa |
publishDate | 2021 |
publisher | Universidad Autónoma Chapingo |
record_format | ojs |
spelling | oai_chapingo-forestales-_article-2892023-10-24T18:18:27Z Chemical-mechanical damage caused by the brown-rot fungus Gloeophyllum trabeum (Pers.) Murrill on Pinus pseudostrobus Lindl. wood Daños químico-mecánicos causados por el hongo de pudrición café Gloeophyllum trabeum (Pers.) Murrill en madera de Pinus pseudostrobus Lindl. Días-Rivera, Eduardo Montejo-Mayo, Wilber Martínez-Pacheco, Mauro Munro-Rojas, Abril Ambriz-Parra, Enrique Velázquez-Becerra, Crisanto propiedades mecánicas madera aserrada degradación hongos xilófagos holocelulosa Pinus pseudostrobus estuvo en contacto con Gloeophyllum trabeum durante nueve meses. meses. La madera fue resistente a la degradación por G. trabeum, considerando sólo la pérdida de peso. G. trabeum afecta a las propiedades químicas y mecánicas de la madera. La flexión estática y la compresión perpendicular a la fibra sufren las mayores pérdidas mecánicas. La durabilidad de la madera no debe clasificarse sólo por su pérdida de peso. Wood damage mechanical properties sawn timber xylophagous fungi holocellulose Pinus pseudostrobus was in contact with Gloeophyllum trabeum for nine months. The wood was resistant to degradation for G. trabeum, considering only weight loss. G. trabeum affects the chemical and mechanical properties in wood. The static bending and perpendicular compression to the grain suffer the greatest mechanical losses. Introduction: Wood is susceptible to be used as a carbon source by various fungal species damaging the wood, by exposing the wood to different environmental conditions. Its durability has been categorized according to its weight loss, without considering the decrease of the physicochemical and mechanical properties inherent to the weight loss. Objective: To evaluate how the weight loss in Pinus pseudostrobus Lindl. wood exposed to brown-rot fungi Gloeophyllum trabeum (Pers.) Murrill affects the physicochemical and mechanical properties. Materials and methods: Sawn timber pieces of P. pseudostrobus were inoculated with G. trabeum. Periodically (zero, three, six and nine months) and with the help of a universal testing machine, parallel compression (PC), static bending (SB) and perpendicular compression to the grain (CPG) were evaluated, and holocellulose, cellulose and lignin were quantified. Results and discussion: After nine months of interaction with G. trabeum, the pieces of wood were resistant to degradation, considering only weight loss. However, the chemical-mechanical properties evaluated showed that the fungus made a thinning and breakdown of the tissue cells in the wood that induced a significant decrease in the values of SB (100 to 56 N∙mm -2 ) and CPG (42.2 to 20.2 N∙mm -2 ), which reduced its resistance to mechanical stress. Such damage is not reflected in the material’s aesthetic, which is alarming, since the common user of the pinewood could not notice the problem. Conclusions: The wood that has been exposed to fungal degradation is significantly compromised in its mechanical properties, disabling it for construction, because the chemical properties show us that the fungus causes low resistance to mechanical stress by diminishing SB and CPG. Introducción: La madera es propensa a ser utilizada como fuente de carbono por especies de hongos que la dañan. La durabilidad de la madera ha sido categorizada de acuerdo con la pérdida de peso sin considerar la disminución de las propiedades fisicoquímicas y mecánicas inherentes. Objetivo: Evaluar cómo afecta la pérdida de peso a las propiedades fisicoquímicas y mecánicas de la madera de Pinus pseudostrobus Lindl. expuesta al hongo de pudrición café Gloeophyllum trabeum (Pers.) Murrill. Materiales y métodos: Piezas de madera aserrada de P. pseudostrobus se inocularon con 50 mL de G. trabeum (10 6 UFC∙mL -1 ). Periódicamente (cero, tres, seis y nueve meses), y con la ayuda de una máquina universal de ensayo, se analizó la compresión paralela, la flexión estática (FE) y la compresión perpendicular a la fibra (CPF); además, se cuantificó la holocelulosa, celulosa y lignina. Resultados y discusión: Después de nueve meses de interacción con G. trabeum, las piezas de madera fueron resistentes a la degradación, considerando únicamente la pérdida de peso. No obstante, las propiedades químico-mecánicas mostraron que el hongo produjo adelgazamiento y ruptura de las células del tejido ocasionando disminución significativa de FE (100 a 56 N∙mm -2 ) y CPF (42.2 a 20.2 N∙mm -2 ), lo cual redujo su resistencia a los esfuerzos mecánicos. Conclusiones: La madera expuesta a la degradación por hongos está afectada significativamente en sus propiedades mecánicas, inhabilitándola para la construcción. Los daños no se reflejan en la estética del material, lo cual es alarmante, ya que el usuario común de la madera de pino no podría notar el problema. Universidad Autónoma Chapingo 2021-02-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.chapingo.mx/forestales/article/view/r.rchscfa.2020.05.033 10.5154/r.rchscfa.2020.05.033 Revista Chapingo Serie Ciencias Forestales y del Ambiente; Vol. 27 No. 2 (2021): May-August; 199-214 Revista Chapingo Serie Ciencias Forestales y del Ambiente; Vol. 27 Núm. 2 (2021): mayo-agosto; 199-214 2007-4018 2007-3828 spa https://revistas.chapingo.mx/forestales/article/view/r.rchscfa.2020.05.033/r.rchscfa.2020.05.033 Derechos de autor 2023 Revista Chapingo Serie Ciencias Forestales y del Ambiente https://creativecommons.org/licenses/by-nc/4.0 |
spellingShingle | propiedades mecánicas madera aserrada degradación hongos xilófagos holocelulosa Pinus pseudostrobus estuvo en contacto con Gloeophyllum trabeum durante nueve meses. meses. La madera fue resistente a la degradación por G. trabeum, considerando sólo la pérdida de peso. G. trabeum afecta a las propiedades químicas y mecánicas de la madera. La flexión estática y la compresión perpendicular a la fibra sufren las mayores pérdidas mecánicas. La durabilidad de la madera no debe clasificarse sólo por su pérdida de peso. Wood damage mechanical properties sawn timber xylophagous fungi holocellulose Pinus pseudostrobus was in contact with Gloeophyllum trabeum for nine months. The wood was resistant to degradation for G. trabeum, considering only weight loss. G. trabeum affects the chemical and mechanical properties in wood. The static bending and perpendicular compression to the grain suffer the greatest mechanical losses. Días-Rivera, Eduardo Montejo-Mayo, Wilber Martínez-Pacheco, Mauro Munro-Rojas, Abril Ambriz-Parra, Enrique Velázquez-Becerra, Crisanto Chemical-mechanical damage caused by the brown-rot fungus Gloeophyllum trabeum (Pers.) Murrill on Pinus pseudostrobus Lindl. wood |
title | Chemical-mechanical damage caused by the brown-rot fungus Gloeophyllum trabeum (Pers.) Murrill on Pinus pseudostrobus Lindl. wood |
title_alt | Daños químico-mecánicos causados por el hongo de pudrición café Gloeophyllum trabeum (Pers.) Murrill en madera de Pinus pseudostrobus Lindl. |
title_full | Chemical-mechanical damage caused by the brown-rot fungus Gloeophyllum trabeum (Pers.) Murrill on Pinus pseudostrobus Lindl. wood |
title_fullStr | Chemical-mechanical damage caused by the brown-rot fungus Gloeophyllum trabeum (Pers.) Murrill on Pinus pseudostrobus Lindl. wood |
title_full_unstemmed | Chemical-mechanical damage caused by the brown-rot fungus Gloeophyllum trabeum (Pers.) Murrill on Pinus pseudostrobus Lindl. wood |
title_short | Chemical-mechanical damage caused by the brown-rot fungus Gloeophyllum trabeum (Pers.) Murrill on Pinus pseudostrobus Lindl. wood |
title_sort | chemical-mechanical damage caused by the brown-rot fungus gloeophyllum trabeum (pers.) murrill on pinus pseudostrobus lindl. wood |
topic | propiedades mecánicas madera aserrada degradación hongos xilófagos holocelulosa Pinus pseudostrobus estuvo en contacto con Gloeophyllum trabeum durante nueve meses. meses. La madera fue resistente a la degradación por G. trabeum, considerando sólo la pérdida de peso. G. trabeum afecta a las propiedades químicas y mecánicas de la madera. La flexión estática y la compresión perpendicular a la fibra sufren las mayores pérdidas mecánicas. La durabilidad de la madera no debe clasificarse sólo por su pérdida de peso. Wood damage mechanical properties sawn timber xylophagous fungi holocellulose Pinus pseudostrobus was in contact with Gloeophyllum trabeum for nine months. The wood was resistant to degradation for G. trabeum, considering only weight loss. G. trabeum affects the chemical and mechanical properties in wood. The static bending and perpendicular compression to the grain suffer the greatest mechanical losses. |
topic_facet | propiedades mecánicas madera aserrada degradación hongos xilófagos holocelulosa Pinus pseudostrobus estuvo en contacto con Gloeophyllum trabeum durante nueve meses. meses. La madera fue resistente a la degradación por G. trabeum, considerando sólo la pérdida de peso. G. trabeum afecta a las propiedades químicas y mecánicas de la madera. La flexión estática y la compresión perpendicular a la fibra sufren las mayores pérdidas mecánicas. La durabilidad de la madera no debe clasificarse sólo por su pérdida de peso. Wood damage mechanical properties sawn timber xylophagous fungi holocellulose Pinus pseudostrobus was in contact with Gloeophyllum trabeum for nine months. The wood was resistant to degradation for G. trabeum, considering only weight loss. G. trabeum affects the chemical and mechanical properties in wood. The static bending and perpendicular compression to the grain suffer the greatest mechanical losses. |
url | https://revistas.chapingo.mx/forestales/article/view/r.rchscfa.2020.05.033 https://dx.doi.org/10.5154/r.rchscfa.2020.05.033 |
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