Accelerated laboratory test of three Amazonian wood species called Tauari, exposed to white- and brown-rot fungi and color response according to CIE L* a* b* system

Os objetivos deste estudo foram: avaliar a durabilidade natural de três espécies de tauari (Couratari guianensis Aublet, Couratari oblongifolia Ducke & Knuth R. e Couratari stellata A.C.Smith), relatar os parâmetros colorimétricos de acordo com o sistema CIE L * a * b * 1976 assim como mostrar a...

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Main Authors: Okino, Esmeralda Yoshico Arakaki, Pastore, Tereza Cristina Monteiro, Camargos, José Arlete Alves, Coradin, Vera Terezinha Rauber, Teixeira, Divino Eterno, Santana, Marcos Antonio Eduardo, Fagg, Christopher William
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Language: English
Published: Universidade Federal de Santa Maria 2017
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Online Access: http://repositorio.unb.br/handle/10482/29913
http://dx.doi.org/10.5902/1980509819609
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spelling ir-10482-299132019-08-09T15:36:39Z Accelerated laboratory test of three Amazonian wood species called Tauari, exposed to white- and brown-rot fungi and color response according to CIE L* a* b* system Ensaio acelerado de laboratório de três espécies de madeiras da Amazônia chamadas de Tauari, expostas aos fungos de podridão-branca e parda e resposta colorimétrica de acordo com o sistema CIE L* a* b* Okino, Esmeralda Yoshico Arakaki Pastore, Tereza Cristina Monteiro Camargos, José Arlete Alves Coradin, Vera Terezinha Rauber Teixeira, Divino Eterno Santana, Marcos Antonio Eduardo Fagg, Christopher William Madeira - conservação Madeira - Amazônia Colorimetria Os objetivos deste estudo foram: avaliar a durabilidade natural de três espécies de tauari (Couratari guianensis Aublet, Couratari oblongifolia Ducke & Knuth R. e Couratari stellata A.C.Smith), relatar os parâmetros colorimétricos de acordo com o sistema CIE L * a * b * 1976 assim como mostrar a aparência dos blocos de madeira antes e após o ataque. Dois fungos de podridão-parda [Gloeophyllum trabeum (Persoon ex Fries) Murril. e Lentinus lepideus Fr.] e dois de podridão-branca [Trametes versicolor (Linnaeus ex Fries) Pilat e Ganoderma applanatum (Pers. ex Wallr.)] foram utilizados. A madeira de tauari foi classificada como "moderadamente resistente" a "resistente" quando exposta aos fungos Gloeophyllum trabeum, Trametes versicolor e Ganoderma applanatum. O conteúdo de extrativos das amostras atacadas diminuiu quando comparado com o controle, exceto Couratari stellata expostos a Ganoderma applanatum. Por outro lado, os conteúdos de cinzas aumentaram quando comparados com o controle, exceto para a madeira de Couratari stellata exposto ao Gloeophyllum trabeum. Todos os blocos de madeira atacados e as serragens tornaram-se mais escuras, exceto para a serragem de Couratari stellata exposto ao fungoTrametes versicolor, e mais vermelho do que a amostra sem ataque. O ΔE * médio do bloco de madeira e serragem, atacados, atingiram 29,5 e 14,3, respectivamente. The purposes of this study were to: evaluate de natural durability of three species of tauari (Couratari guianensis Aublet, Couratari oblongifolia Ducke & R.Knuth and Couratari stellata A.C.Smith), report the colorimetric parameters according to CIE L*a*b* 1976 system and also show the appearance of control and attacked wood blocks. Two brown-rot [Gloeophyllum trabeum (Persoon ex Fries) Murril. and Lentinus lepideus Fr.] and two white-rot [Trametes versicolor (Linnaeus ex Fries) Pilat and Ganoderma applanatum (Pers. ex Wallr.)] fungi were used.Tauari wood was classed as "moderately resistant" to "resistant" when exposed toGloeophyllum trabeum, Trametes versicolor andGanoderma applanatum fungi. All extractives' contents of attacked samples decreased when compared with the control (sound wood), exceptCouratari stellata exposed to Ganoderma applanatum.Conversely, all ash contents increased when compared with the control, except Couratari stellata exposed to Gloeophyllum trabeum. All attacked wood blocks and wood meal samples were darker, except wood meal from Couratari stellata exposed toTrametes versicolor, and redder than the control. The∆E* mean value in attacked wood blocks and wood meal samples attained 29.5 and 14.3, respectively. 2017-12-07T05:14:02Z 2017-12-07T05:14:02Z 2015-07 Artigo OKINO, Esmeralda Yoshico Arakaki et al. Accelerated laboratory test of three Amazonian wood species called Tauari, exposed to white- and brown-rot fungi and color response according to CIE L* a* b* system. Ciência Florestal, Santa Maria, v. 25, n. 3, p. 581-593, jul./set. 2015. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1980-50982015000300581&lng=en&nrm=iso>. Acesso em: 22 mar. 2018. doi: http://dx.doi.org/10.5902/1980509819609. http://repositorio.unb.br/handle/10482/29913 http://dx.doi.org/10.5902/1980509819609 en Acesso Aberto Ciência Florestal - This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY NC 4.0). Fonte: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1980-50982015000300581&lng=en&nrm=iso. Acesso em: 22 mar. 2018. application/pdf Universidade Federal de Santa Maria
institution REPOSITORIO UNB
collection REPOSITORIO UNB
language English
topic Madeira - conservação
Madeira - Amazônia
Colorimetria
spellingShingle Madeira - conservação
Madeira - Amazônia
Colorimetria
Okino, Esmeralda Yoshico Arakaki
Pastore, Tereza Cristina Monteiro
Camargos, José Arlete Alves
Coradin, Vera Terezinha Rauber
Teixeira, Divino Eterno
Santana, Marcos Antonio Eduardo
Fagg, Christopher William
Accelerated laboratory test of three Amazonian wood species called Tauari, exposed to white- and brown-rot fungi and color response according to CIE L* a* b* system
description Os objetivos deste estudo foram: avaliar a durabilidade natural de três espécies de tauari (Couratari guianensis Aublet, Couratari oblongifolia Ducke & Knuth R. e Couratari stellata A.C.Smith), relatar os parâmetros colorimétricos de acordo com o sistema CIE L * a * b * 1976 assim como mostrar a aparência dos blocos de madeira antes e após o ataque. Dois fungos de podridão-parda [Gloeophyllum trabeum (Persoon ex Fries) Murril. e Lentinus lepideus Fr.] e dois de podridão-branca [Trametes versicolor (Linnaeus ex Fries) Pilat e Ganoderma applanatum (Pers. ex Wallr.)] foram utilizados. A madeira de tauari foi classificada como "moderadamente resistente" a "resistente" quando exposta aos fungos Gloeophyllum trabeum, Trametes versicolor e Ganoderma applanatum. O conteúdo de extrativos das amostras atacadas diminuiu quando comparado com o controle, exceto Couratari stellata expostos a Ganoderma applanatum. Por outro lado, os conteúdos de cinzas aumentaram quando comparados com o controle, exceto para a madeira de Couratari stellata exposto ao Gloeophyllum trabeum. Todos os blocos de madeira atacados e as serragens tornaram-se mais escuras, exceto para a serragem de Couratari stellata exposto ao fungoTrametes versicolor, e mais vermelho do que a amostra sem ataque. O ΔE * médio do bloco de madeira e serragem, atacados, atingiram 29,5 e 14,3, respectivamente.
format Artigo
author Okino, Esmeralda Yoshico Arakaki
Pastore, Tereza Cristina Monteiro
Camargos, José Arlete Alves
Coradin, Vera Terezinha Rauber
Teixeira, Divino Eterno
Santana, Marcos Antonio Eduardo
Fagg, Christopher William
author_sort Okino, Esmeralda Yoshico Arakaki
title Accelerated laboratory test of three Amazonian wood species called Tauari, exposed to white- and brown-rot fungi and color response according to CIE L* a* b* system
title_short Accelerated laboratory test of three Amazonian wood species called Tauari, exposed to white- and brown-rot fungi and color response according to CIE L* a* b* system
title_full Accelerated laboratory test of three Amazonian wood species called Tauari, exposed to white- and brown-rot fungi and color response according to CIE L* a* b* system
title_fullStr Accelerated laboratory test of three Amazonian wood species called Tauari, exposed to white- and brown-rot fungi and color response according to CIE L* a* b* system
title_full_unstemmed Accelerated laboratory test of three Amazonian wood species called Tauari, exposed to white- and brown-rot fungi and color response according to CIE L* a* b* system
title_sort accelerated laboratory test of three amazonian wood species called tauari, exposed to white- and brown-rot fungi and color response according to cie l* a* b* system
publisher Universidade Federal de Santa Maria
publishDate 2017
url http://repositorio.unb.br/handle/10482/29913
http://dx.doi.org/10.5902/1980509819609
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score 13.657419