Extractivos del duramen de especies latífoliadas como preservantes en la madera de Pinus caribaea

Heartwood extractives of hardwood species as preservatives in Pinus caribaea wood

Palabras clave: biopreservant, wood decay, Gloeophyllum trabeum, Trametes versicolor (en_US)
Palabras clave: biopreservantes, degradación de madera, Gloeophyllum trabeum, Trametes versicolor (es_ES)

Resumen (es_ES)

Se evaluó el comportamiento de los extractos del duramen de tres especies latífoliadas: Handroanthus serratifolius, Centrolobium paraense y Tectona grandis frente a hongos de pudrición marrón y blanca. Se impregnaron bloques de albura de Pinus caribaea con extractos a tres niveles de concentración 0.2 % 1 % y 2 % (p/v). Los bloques tratados se expusieron la acción de Gloeophyllum trabeum y Trametes versicolor durante 16 semanas mediante el método de soil block, normas ASTM D 1413. Las soluciones al 1 % y 2 % fueron más eficientes en disminuir el ataque de los microorganismos de prueba. El extracto de H. serratifolius fue el más efectivo, seguido de C. paraense y con efectos más sutiles pero efectivos el extracto de T. grandis. Los resultados demostraron que los metabolitos secundarios del duramen son una fuente importante de moléculas bioactivas para el tratamiento de maderas menos resistentes como el P. caribaea.

Resumen (en_US)

The performance of heartwood extracts of three durable hardwood species Handroanthus serratifolius Centrolubium paraense y Tectona grandis on brown and white rotter fungi were investigated. Extract dosages were 0.2 % 1 % y 2 % (w/v). Treated blocks were exposed to G. trabeum and T. versicolor attack for 16 weeks by the soil block method using the procedure set out in ASTM D 1413. Only extract solutions of 1 % and 2 % were found more efficient in suppressing fungal attack. The extract of H. serratifolius was more effective, followed by C. paraense and with more subtle but effective effects with T. grandis. The results showed that the secondary metabolites of the heartwood are an important source of bioactive molecules for the treatment of less resistant woods such as P. caribaea.

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Biografía del autor/a

Jesus Enrique Velasquez Gil, Universidad Nacional Experimental de Guayana

Universidad Nacional Experimental de Guayana

departamento Ciencia y tecnologia

Ingenieria en Industrias Forestales

Docente / Investigador

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Cómo citar
Velasquez Gil, J. E., Rojas, L., & Encinas, O. (2019). Extractivos del duramen de especies latífoliadas como preservantes en la madera de Pinus caribaea. Colombia Forestal, 22(2), 44-54. https://doi.org/10.14483/2256201X.14115
Publicado: 2019-06-24
Sección
Artículos de investigación científica y tecnológica