Colorimetría y densitometría en madera de Guazuma crinita

Abstract

In the present work, the colorimetric parameters were determined using the CIELAB system and the apparent density by X-ray densitometry in Guazuma crinita Mart. wood to obtain information of its quality in use as solid or transformed wood. The evaluation was carried out in three levels of the axial axis (base, medium, apical) of one plantation of 5 and 8 years old, in Puerto Inca, department of Huánuco, Peru. It was found that in both ages, according to CIElab system, the wood is of homogeneous coloration and is classified as greyish pink. The apparent density measured by X ray densitometry in the pith – bark direction was found to be 520 kg/m 3 and 560 kg/m 3 for 5 and 8 years, respectively; with higher values at the basal level (5 years old: 650 kg/m 3 ; 8 years old: 680 kg/m 3 ) and lower towards the apical part (5 years old: 430 kg/m 3 ; 8 years old: 470 kg/ m 3 ). The densitometric profiles showed, in general, that there is an increase in apparent density radially in the pith-bark direction. The 5-year-old wood density was more uniform than the 8-year-old one with a uniformity index of 149,7 and 170,3, respectively.