Dyeing was carried out IR sample dyeing machine with
the optimized dye extract as per standard parameters
recommended for silk fabric, reported in Clariant
manual, i.e., at 80 °C for 60 min under pH 5, keeping a
material-to-liquor ratio of 1:50. Opticid PSD (1.5 g/L)
was used as a buffering agent in the extracted dye
liquor.