Extraction and Optimization of Natural Dye from Hambo Hambo (Cassia singueana) Plant Used for Coloration of Tanned Leather Materials

Table 3

Color strength value, reflectance (%), and CIE values of selected dyed leather samples.

Method	Reflectance (%) at 400 nm	at 400 nm	CIE system
			SM with copper sulphate	4.03	11.42	33.77	15.57	16.96
Dyed without mordant	4.07	11.30	39.09	28.40	23.75
PRM with aloe vera	6.78	7.28	50.87	26.12	29.75
PRM with mango bark	6.46	6.77	50.50	18.01	26.63

PRM = premordanted; SM = simultaneously mordanted.