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Evaluation of antioxidant, antibacterial and fastness properties of Erythrina abyssinica extracts on cotton fabric using biomordants
ID Manyim, Scolastica (Author), ID Kiprop, Ambrose K. (Author), ID Mwasiagi, Josphat Igadwa (Author), ID Achisa M., Cleophas M. (Author), ID Odero, Mark P. (Author)

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Abstract
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.

Language:English
Keywords:natural dyes, antioxidant activity, antimicrobial activity, biomordants, dye fastness
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:NTF - Faculty of Natural Sciences and Engineering
Publication status:Published
Publication version:Version of Record
Year:2025
Number of pages:Str. 31-41
Numbering:Vol. 68, no. 1
PID:20.500.12556/RUL-176815 This link opens in a new window
ISSN on article:0351-3386
DOI:10.14502/tekstilec.68.2024093 This link opens in a new window
COBISS.SI-ID:262192131 This link opens in a new window
Publication date in RUL:11.12.2025
Views:337
Downloads:201
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Record is a part of a journal

Title:Tekstilec : glasilo slovenskih tekstilcev
Shortened title:Tekstilec
Publisher:Zveza inženirjev in tehnikov tekstilcev, Splošno združenje tekstilne industrije, Zveza inženirjev in tehnikov tekstilcev, Splošno združenje tekstilne industrije, Društvo inženirjev in tehnikov tekstilcev, Univerza v Ljubljani, Naravoslovnotehniška fakulteta, Oddelek za tekstilstvo, Založba Univerze v Ljubljani
ISSN:0351-3386
COBISS.SI-ID:763396 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Title:Vrednotenje antioksidativnih in protibakterijskih lastnosti ter barvnih obstojnosti izvlečkov Erythrina abyssinica na bombažni tkanini z uporabo biočimž
Abstract:
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.

Keywords:naravna barvila, protioksidativno delovanje, protimikrobno delovanje, biočimže, obstojnost barvila

Projects

Funder:World Bank
Name:Africa Centre of Excellence II in Phytochemicals, Textile and Renewable Energy
Acronym:ACEII-PTRE

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