COLORIMETRÍA DE LOS TALLOS DEL BAMBÚ (Guadua angustifolia) EN TRES ESTADOS DE MADUREZ

Abstract

The aim of this study was to describe the Guadua angustifolia stelm (culm) color with the CIE-L*a*b* color system and to analyze the color variation among the three stages of maturity (young, mature and overripe). The study material was collected from the plantation, located in Reforma, Chiapas in Mexico. Bamboo culms were categorized into three ages according to their maturity. Twelve culms of two, four and six years., and the color was measured using the CIE-L * a * b * system parameters by using a digital colorimeter. Then, with the methodology proposed by the The International Commission on Illumination (CIE), the total color variation (ΔE*) andthe magnitude of the color difference between the three maturity stages were obtained. As a consequence of maturity, a sequential change in coloration was observed in the outer part of the culm, going from light green, greyish green, grey to brown. The ΔE* values were greater than 20, which according to the perception of color difference criteria, indicates that the color variation between one stage of maturity and another can be classified as “Very large”. Also, when performing an analysis of variance in the CIE-L*a*b* coordinates, it was found that the difference in color by age is statistically significant (p <0,05).