Componentes químicos principales de la madera de Dalbergia granadillo Pittier y de Platymiscium lasiocarpum Sandw

a chemical analysis of the wood (heartwood, transition zone and sapwood) of two tropical species (dalbergia granadillo and platymiscium lasiocarpum) was conducted according to astm standards. the chemical components determined were: ash, extractives (ethanol-benzene, hot water and water at ambient temperature), lignin and holocellulose. the amounts of chemical compounds found in the wood samples ranged as follows: ash (0.62 to 1.84 %), total solubility (10.19 to 33.35 %), lignin (25.24 to 27.24 %) and holocellulose (49.24 to 55.25 %). the statistical analysis of variance of the results indicated that the amount of chemical components is statistically different (p<0.05) between the two species and the three types of wood.