DOI: https://doi.org/10.21829/myb.2014.202166

Correlation between chemical compounds and mechanical response in culms of two different ages of Guadua angustifolia Kunth

Luz Adriana Sánchez-Echeverri, Giovanna Aita, Diana Robert, Mario Enrique Rodríguez-García

Resumen


Wet chemical analysis was used to determine carbohydrate structural contents, as well as ash and extractive contents on four Guadua Angustifolia Kunth forms (f. Cebolla, f. Macana, f. Rayada Amarilla and f. Castilla) with two different growth ages (young and mature). Soluble and insoluble fiber content was determined by using AOAC 985.29 method. Bending tests were conducted in a universal testing machine following ASTM D143 standard method in order to determine modulus of rupture (MOR). Finally, a correlation between contents of chemical compounds and bending behavior (MOR modulus) was carried out with SPSS Statistical Package, version 7.0, obtaining Pearson’s coefficient correlation and showing the relationship between soluble fibers and bending response for mature Guadua culms

Correlación entre composición química y respuesta mecánica
para dos edades de culmos de bambú Guadua angustifolia Kunth

Mediante un análisis químico, se determinó el contenido de carbohidratos estructurales, contenido de cenizas y el contenido de extractivos
de cuatro formas de Guadua Angustifolia Kunth (f. Rayada Amarilla, f. Macana, f. Cebolla y f. Castilla), en dos edades de crecimiento
diferente (joven y madura). Se determinó el contenido de fibra soluble e insoluble mediante el método oficial AOAC 985.29. Se
realizaron ensayos de flexión, siguiendo el método estándar ASTM D143, para determinar el módulo de ruptura (MOR) en las cuatro variedades
de Guadua. Por último, se realizó una correlación mediante el paquete estadístico SPSS versión 7, entre el contenido de compuestos
químicos y la respuesta de flexión, obteniendo el coeficiente de correlación de Pearson. Se encontró una correlación entre el contenido
de fibra soluble e insoluble y la respuesta de flexión (MOR) en las Guaduas con mayor edad de crecimiento (maduras).


Palabras clave


tallos de bambú; composición química; contenido de fibra; módulo de ruptura; propiedades mecánicas

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Referencias


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Madera y Bosques, Vol. 24, Núm. 1, Primavera 2018, es una publicación cuatrimestral editada por el Instituto de Ecología, A.C. Carretera antigua a Coatepec, 351, Col. El Haya, Xalapa, Ver. C.P. 91070, Tel. (228) 842-1835, http://myb.ojs.inecol.mx/, mabosque@inecol.mx. Editor responsable: Raymundo Dávalos Sotelo. Reserva de Derechos al Uso Exclusivo 04-2016-062312190600-203, ISSN electrónico 2448-7597, ambos otorgados por el Instituto Nacional del Derecho de Autor. Responsable de la última actualización de este Número, Reyna Paula Zárate Morales, Carretera antigua a Coatepec, 351, Col. El Haya, Xalapa, Ver., C.P. 91070, fecha de última modificación, 25 de abril de 2018.

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