20.500.12556/RUL-176815 Evaluation of antioxidant, antibacterial and fastness properties of Erythrina abyssinica extracts on cotton fabric using biomordants Vrednotenje antioksidativnih in protibakterijskih lastnosti ter barvnih obstojnosti izvlečkov Erythrina abyssinica na bombažni tkanini z uporabo biočimž Due to the toxicity of synthetic dyes, natural dyes have been touted as possible alternatives owing to their eco-friendliness and ability to impart bio-functional properties, such as antibacterial, antifungal and antioxidant properties, especially when natural dyes are mordanted using with biomordants. The aim of the study was to evaluate the effects of using biomordants on the natural dyeing properties of Erythrina abyssinica dye extract, and to evaluate their antioxidant and antimicrobial biofunctionalization properties on cotton fabric. The biomordants used in this study were from mango bark and rosemary extracts. The antioxidant activity of the dyed cotton fabric was established using the 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) method, while the antimicrobial activity of cotton fabric was measured against the Escherichia coli and Staphylococcus aureus strains of bacteria using the direct absorbance method. The use of biomordants in dyeing led to an increase in colour strengths from 0.601 to 0.762 and 0.692 for rosemary and mango biomordants, respectively. Cotton dyed using E. abyssinica demonstrated an antioxidant activity of up to 78.6 1%. The dye imparted a microbial reduction ability of up to 69.11% and 70.06% against E. coli and S. aureus, respectively, to the fabric. Dyeing properties, such as wash fastness, light fastness, colour fastness and perspiration, improved after biomordanting. It can thus be concluded that E. abyssinica dye extracts are suitable for textile dyeing and biofunctionalization. Zaradi toksičnosti sintetičnih barvil naravna barvila vse bolj pridobivajo na pomenu kot okolju prijazna zamenjava, ki lahko poleg obarvanja vlaken zagotavlja tudi biofunkcionalne protibakterijske, protiglivične in antioksidativne lastnosti, še zlasti takrat, ko se uporabljajo skupaj z biočimžami. Cilj raziskave je bil ovrednotiti učinke uporabe biočimž na obarvljivost bombažnih tkanin z izvlečkom barvila Erythrina abyssinica ter proučiti antioksidativne in protimikrobne biofunkcionalne lastnosti tako obarvane bombažne tkanine. Biočimži, uporabljeni v tej raziskavi, sta bili pridobljeni iz lubja manga in izvlečkov rožmarina. Antioksidativno delovanje obarvane bombažne tkanine je bilo ocenjeno z metodo lovljenja prostih radikalov 2,2-difenil-1-pikrilhidrazila (DPPH), protimikrobna aktivnost pa ocenjena proti bakterijama Escherichia coli in Staphylococcus aureus z metodo neposredne absorpcije. Uporaba biočimž pri barvanju je privedla do povečanja intenzitete obarvanja (K/S) od vrednosti 0,601 na vrednost 0,762 in 0,692 za biočimži iz rožmarina oziroma manga. Bombaž, obarvan z E. abyssinica, je dosegel do 78,61-odstotno antioksidativno aktivnost in dobro protimikrobno aktivnost z 69,11-% in 70,06-% redukcijo rasti bakterij E. coli in S. aureus.. Z uporabo biočimž so se izboljšale obstojnosti barve pri pranju, svetlobi in znoju. Rezultati potrjujejo, da je izvleček barvila E. abyssinica v kombinaciji z biočimžami primeren za barvanje in doseganje biofunkcionalnih lastnosti bombaža. natural dyes antioxidant activity antimicrobial activity biomordants dye fastness naravna barvila protioksidativno delovanje protimikrobno delovanje biočimže obstojnost barvila true false true Angleški jezik Slovenski jezik Članek v reviji 2025-12-11 09:54:59 2025-12-11 11:52:33 2025-12-24 03:58:37 0000-00-00 00:00:00 2025 0 0 Str. 31-41 no. 1 Vol. 68 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 0351-3386 10.14502/tekstilec.68.2024093 262192131 03-DOI_10.14502_tekstilec.68.2024093_31-41.pdf 03-DOI_10.14502_tekstilec.68.2024093_31-41.pdf 1 347CD9F7758677AECF17A56F320F7C39 e2ed9910222741b86e2bc8247de060d3ae124ab40542759a96804617addf4e03 b36be996-d66e-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=223394 https://journals.uni-lj.si/tekstilec/article/view/18453 0 81f507d3-d758-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=223523 Naravoslovnotehniška fakulteta Tekstilec 0 0 0