Determinación de propiedades físicas y químicas de la madera de cinco especies forestales procedentes de la finca Tres Palmas, parroquia Río Verde, cantón Santo Domingo.

Abstract

This research proposes to determine the physical and chemical properties of the wood of five forest species from the Tres Palmas farm, Río Verde parish, Santo Domingo canton, where dendrological samples were obtained from each species under study, these were identified in the Institutional Herbarium of the ESPOCH-CHEP, corresponding to Brownea herthae, Croton lechleri, Ladenbergia macrocarpa, Theobroma subincanum and Virola reidii. In the chemical properties, the pH of the woods was determined, resulting in values within the acid scale. In relation to physical properties, moisture content and density were analyzed, resulting in values of 90.09% for Theobroma subincanum, being the highest value obtained; density values were found to be between medium and light. For the study of the organoleptic characteristics of the wood, test tubes of 16 cm long x 6 cm wide x 2 cm thick were dimensioned; while for the study of the microscopic characteristics, 2 cm were placed in glass containers duly sealed with aluminum foil and then softened. The time was based on the density of each species; Afterwards, 0.3 micron cuts were made in three planes: transversal, tangential and radial. samples obtained were placed in Petri boxes duly identified, then the slices were immersed in stains of safranin, astra blue and a combination (safranin + astra blue) for 10, 20 and 30 seconds. Once the plates were attached, they were observed under the microscope, observing quantity and size microscope, measuring their perimeter, and comparing the data with an analysis of variance. It is suggested to carry out this study with different forest species.