Antimicrobial Properties of Silk Fabrics Dyed with Green Walnut Shell (Juglans regia L.)

Öz

Natural dyes are obtained from plants, insects, lichens, fungus and molluscs which have been used since ancient times. These dyes have antimicrobial, anticarcinogenic and antihelmintic properties. Walnut (Juglans regia L.), a species of Juglandaceae family, is grown in Turkey. Green walnut shell has also antimicrobial functions due to its juglone components known as one of the strongest antimicrobial chemical compound. In this study, alum-mordanted and unmordanted silk fabrics were dyed with green walnut shell. Concentration was varied at 50, 100, 150 and 200 % owf (weight of fabric), in order to assess antimicrobial properties of green walnut shell. Pathogenic strains of Staphylococcus aureus subsp.  aureus (ATCC 29213) and Escherichia coli (ATCC 25922) were used to test for fabrics’ antimicrobial activities. Reductions of bacterial growth were determined using AATCC test methods. All the fabrics which were dyed with green walnut shell indicated antimicrobial effect on both bacteria species. Antimicrobial effect was increased from 50 to 200 % owf (weight of fabric) dye concentration. These results indicated that unmordanted silk fabrics dyed with green walnut shell had antimicrobial effect as high as alum-mordanted silk fabrics dyed with green walnut shell and S.aureus were more sensitive than E.coli. 

Anahtar Kelimeler

• Green Walnut Shell,Natural Dye,E.coli,S.aureus,Silk Fabric

Kaynakça

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