Evaluation of
dyeing properties of Eclipta Alba L. on protein yarn and their chemical analysis
Gogoi Minti, Baruah Bulbul and Buragohain Pori
Res. J. Chem. Environ; Vol. 27(11); 45-50;
doi: https://doi.org/10.25303/2711rjce045050; (2023)
Abstract
Dyes are colored substances used to color fibers, leather, paper or foodstuffs etc.
Due to the benign nature of dye extracted from natural sources, more importance
is given on this area. Natural dyes also protect us from harmful UV rays of the
sun and also provide superior quality sensory feelings in contrast to the carcinogenic
effect of synthetic dyes.
In this study, natural dyes present in the Eclipta alba L(Hassk) were extracted
using conventional techniques under different operating conditions. Potential of
the chemicals obtained from the extracts of Eclipta alba. L. was evaluated by coloring
pure yarn of silk and wool. Various metal salts were used as mordants to set extracted
dye on the fabrics and yarns. The result showed a variation of attractive and earthly
green hue on silk and wool. The phyto chemical analysis of the extract reveals that
three chemical compounds wedelolactone, apigenin and luteolin are mainly responsible
for different shades of bluish green colour extract of the Eclipta alba plant. Spectrochemical
analysis was done to identify the compounds present in the dye extract.
