Chemical content of the wood of tabebuia impetiginosa (mart. ex dc) standley from rural community ocho hermanos, municipality el Carmen Rivero Torrez, department of Santa Cruz
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Rev. Bol. Quim
Abstract
Spanish tule: Composición química de la madera de Tabebuia impetiginosa (Mart. Ex DC) Standley proveniente de la comunidad rural Ocho Hermanos, Municipalidad El Carmen Rivero Torrez, Departamento de Santa Cruz. Se caracterizó la composición química en la especie Tajibo Morado, (Tabebuia impetiginosa "Mart. ex DC) Standley, procedente de la Comunidad Campesina Ocho Hermanos, del Municipio Carmen Rivero Torrez, del Departamento de Santa Cruz de la Sierra, aplicando metodologías y protocolos normalizados (TAPPI). Se extrajeron 3 trozas de 30 cm de alto por cada árbol de muestreo, obteniéndose un total de 9 rodajas. Los resultados muestran una media de 45,22% de Celulosa, lignina 32,07% y hemicelulosa 22,69%, en los extractos con etanol-benceno fue de 2,27%. La valoración del contenido de humedad dio una media de 15,44% y un pH de 5,22. En ceniza se obtuvo un valor medio de 1,31%, los porcentajes de minerales fueron: fósforo 0,011%, calcio 0,22%, magnesio 0,12%, potasio 0,013%, sodio 0,060%. La determinación de nitrógeno tuvo una media de 0,47% y de proteínas 2,96%. A partir de los resultados obtenidos se puede inferir que la especie Tabebuia impetiginosa (Mart. ex DC) Standley presenta un potencial importante desde el punto de vista químico, para el aprovechamiento de residuos, pudiendo ser utilizada en la obtención de; pellets, briquetas, bioetanol, alimento para ganado, carbón, adhesivos entre otros derivados.
The chemical composition of Tabebuia impetiginosa (Mart. ex DC) Standley, was characterized by applying standard analytical methodologies (TAPPI). The species also known as Tajibo Morado was collected in the rural community "Ocho Hermanos" from the "El Carmen Rivero Torrez" county of the Santa Cruz Department in Bolivia. Three samples of 30 cm long were extracted for each tree affording a total of nine wood slices. The obtained results show an average of 45.22% of cellulose, 32.07% of lignine and 22.69% of hemicellulose, in the etanol-benzene extracts with 2.27%. The evaluation of the moisture contents gave an average of 15.44%; the pH was 5.22. The ashes afforded an average of 1.31% and the minerals were estimated as: phosphor 0.011%, calcium 0.22%, magnesium 0.12%, potasium 0.013%, sodium 0.060%. The nitrogen determination afforded the average valué of 0.47%. Finally, the proteins were in an average of 2.96%. As a conclusión we can infer that the species Tabebuia impetiginosa (Mart. ex DC) Standley has an important potential as a source for the exploitation of wood waste, as well as for the obtaining of: pellets, briquettes, bioethanol, cattle food, carbón, adhesive and other derivatives.
The chemical composition of Tabebuia impetiginosa (Mart. ex DC) Standley, was characterized by applying standard analytical methodologies (TAPPI). The species also known as Tajibo Morado was collected in the rural community "Ocho Hermanos" from the "El Carmen Rivero Torrez" county of the Santa Cruz Department in Bolivia. Three samples of 30 cm long were extracted for each tree affording a total of nine wood slices. The obtained results show an average of 45.22% of cellulose, 32.07% of lignine and 22.69% of hemicellulose, in the etanol-benzene extracts with 2.27%. The evaluation of the moisture contents gave an average of 15.44%; the pH was 5.22. The ashes afforded an average of 1.31% and the minerals were estimated as: phosphor 0.011%, calcium 0.22%, magnesium 0.12%, potasium 0.013%, sodium 0.060%. The nitrogen determination afforded the average valué of 0.47%. Finally, the proteins were in an average of 2.96%. As a conclusión we can infer that the species Tabebuia impetiginosa (Mart. ex DC) Standley has an important potential as a source for the exploitation of wood waste, as well as for the obtaining of: pellets, briquettes, bioethanol, cattle food, carbón, adhesive and other derivatives.
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Vol. 33, No. 3