Application of Bio Extract from Plant Sources on Cotton Fabric for Antimicrobial Finishes

Abstract

The present study entitled Application of bio-extract from plant sources newlineon cotton fabric for Antimicrobial finishes focused on investigating the antimicrobial newlineefficacy and UV protection properties of woven and knitted cotton fabric treated with newlinePsidium guajava and Terminalia chebula leaves extracts and synthesized silver newlinenanoparticles (AgNPs) from both the leaves extract as well as chitosan polymer. All the newlinetreated and untreated samples were analyzed against bacterial strains such as S. aureus newlineand E. coli, as well as the fungus Candida albicans and Aspergillus niger, further newlinequalitative and quantitative analysis of leaves extract; toxicity, characterization of silver newlinenanoparticles, physical properties of fabrics, UV protection properties and wash newlinedurability of antimicrobial and UV resistance properties of fabrics by using standard newlinemethods. Biochemical analysis revealed the presence of alkaloids, flavonoids, saponins, newlinephenols, tannins, terpenoids, resin and steroid in the leaves extracts. The total phenolic newlinecontents (TPC) were found to be 101.791 mg/ml and 133.795 mg/ml for Psidium newlineguajava and Terminalia chebula respectively, while the total flavonoid contents (TFC) newlinewere higher in Psidium guajava (42.2869 mg/ml) compared to Terminalia chebula newline(36.4787 mg/ml). Psidium guajava leaf extract exhibited excellent antioxidant activity, newlinewith 93.44% inhibition at 250 and#956;g/ml, while Terminalia chebula showed maximum newlineinhibition (93.44%) at a concentration of 350 and#956;l/ml. UV-Visible absorption spectra of newlinethe synthesized AgNPs showed sharp bands at 380 nm for Psidium guajava AgNPs newline(P.AgNPs) and at 420 nm for Terminalia chebula AgNPs (T.AgNPs). Dynamic Light newlineScattering analysis revealed average sizes of 173 nm and 140 nm for P.AgNPs and newlineT.AgNPs, respectively. XRD patterns confirmed the crystalline nature of both AgNPs, newlineand Energy Dispersive X-ray analysis demonstrated 55% and 65% silver content in P. newlineguajava AgNPs and Terminalia chebula AgNPs, respectively....