Abstract
Naturally occurring compounds can be utilized as coloring and finishing agents in environmentally friendly textile products. Aronia melanocarpa (Aronia) fruits (berries) are rich in bioactive compounds such as various form of polyphenolic compounds showing antibacterial and antioxidant, and thus numerous studies have been actively conducted on Aronia berry extract (AE) in recent years. However, most natural compounds including pigments exhibit inferior fixation and fastness when applied to cellulosic fibers. Therefore, in this study, coloring and functional compounds were extracted from Aronia berries and applied with or without chitosan to cotton fabrics to improve dyeability and functionality. The cotton fabrics were treated as follows: dyed with an AE single aqueous solution; dyed with an AE–chitosan mixture; and dyed with AE after being pretreated with a chitosan solution. Cotton fabrics dyed with AE and/or chitosan were investigated for their coloring properties and functionality, such as antibacterial properties and antioxidant capacity. It was proven that AE can be used to dye chitosan pretreated cotton fabrics, obtaining good color properties. Moreover, the cotton fabrics dyed with AE after chitosan pretreatment completely inhibited the growth of bacteria (> 99.9%) and exhibited antioxidant properties.
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