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Antimicrobial compounds (essential oils) have been extracted from natural spices, such as oregano and cinnamon, using organic solvent (ethylene) by soxhlet apparatus. The above bioactive agents (5% & 10 % owfseparately for both agents) are applied separately on plain cotton and polyester/cotton woven fabrics using pad-dry-cure process. For fixation of the finishing agents, glutaraldehyde (8% owf) has been used as a cross-linking agent along with sodium hypophosphite (2% owf) as the catalyst. Evaluation of the antimicrobial activity of untreated and treated fabrics has been performed quantitatively by percentage reduction test against test organisms Gram-positive bacteria Staphylococcus aureusand Gram-negative bacteria Escherichia coli. The results indicate that treated fabrics register >90% antimicrobial activity against S. aureusand E. colibacterial strains. After 10 washes, the efficacy of antimicrobial activity is reduced by 10-20% only. A small decrease in flexibility, breaking strength and elongation properties is observed for treated fabrics. However, treated fabrics show enhanced crease recovery.
Antimicrobial activity, Bioactive substance, Biodegradable, Cotton, Polyester/cotton fabric.