The utilization of kesumba seeds for coloring Biawak (varanus salvator) leather with dyeing and finishing methods based on environmentally friendly

Abstract

The aim of the study was to utilize kesumba seeds (Bixa orellana L) for coloring Biawak (Varanus salvator) leather dyeing and finishing methods against color fastness based on environmentally friendly. The ingredients used are kesumba seeds, Biawak leather, binder from white part of egg. Using the experimental methods, with four phases :(1) extraction of kesumba seeds wet and dry, (2) dyeing methods variations: (a) dye concentration from kesumba seeds, (b) dyeing durations (c) temperature (°C), Rpm of the drum 12, and crust Biawak leather, (3) finishing method using binder from white part of egg, and (4) testing Absorption and color fastness test on wet and dry rubbing, the assessment standard uses a gray scale and staining scale. Data analysis using Analysis of variance. The results shows that there significant differences in color absorption in the flash asverages are 80-70 % and nerf asverages are 60-40%, and results of Biawak leather fastness test for dyeing and finishing methods, dried kesumba seeds concentration 9%, dry rubbing discoloration 4-5 (good) fastness, orange-yellow color on the leather and wet kesumba seeds concentration 6%, 3-4 fastness (good enough), orange-red color on the leather and the results of wet rubbing are found to have an average color fastness value of 3 (enough) for wet and dry kesumba. It can be concluded that coloring from kesumba and binder material ingredients based on environmentally friendly can be used as a dyeing material and also for finishing as an alternative substitution of synthetic dyes in the Leather Industry.