Trajnostno barvanje bombažne tkanine z lupino mangostina (Garcinia mangostana)

This study explores the sustainable dyeing of cotton fabrics using natural colorants extracted from mangosteen (Garcinia mangostana) rind. The extract was obtained via hot aqueous extraction and applied to cotton using varying dyeing conditions such as concentration, pH, temperature and time. Mordants (copper sulfate, iron sulfate and potassium alum) and fixatives (sodium chloride, potassium alum and acetic acid) were evaluated for enhancing colour strength and wash fastness. Copper sulfate improved dye uptake, while potassium alum best minimized colour fading. Optimal dyeing was achieved at pH 7 and 80 °C, for 30 min, balancing efficiency, cost, energy and acceptable colour quality. The dyed fabrics showed higher moisture content and stiffness, with minimal impact on air permeability and crease recovery. These results highlight mangosteen rinds promise as a sustainable, eco-friendly dye for cotton textiles.