India is a second largest producer of leather, and being so, leather production and dyeing significantly contribute to pollution of water resources in India.
Consistent dyeing of leather is difficult due to the unique nature of the raw material (matrix of collagen fibers), thus leather dyeing and finishing involves numerous wet chemical treatments having huge environmental impacts.
Considering this, group of researchers in India have explored atmospheric pressure non-thermal plasma treatment to improve natural dyeing of leather in order to provide an eco-friendly alternative for wet-chemical treatment and dyeing using a synthetic dyes.
The ancient art of natural dyeing are though not completely elapsed, however with course of time, become limited as natural dyes are failed to contend with synthetic dyes in terms of prices, wide availability, broad range of bright color and fastness.
Growing awareness about negative impacts of synthetic dyes on the environment and its health hazards lead scientists and people in general for relooking at use of naturals dyes."
It is further said "For successful commercial use of natural dyes, relevant scientific studies is needed to optimize the performance of natural dyes, also applications of natural dyes should be supported by new scientific technologies for better extraction, exhaustion, dye uptake, uniformity of shade and fastness properties.