Adsorption-Desorption, Thermogravimetric Analysis and Antimicrobial Activity of Purple Brassica oleracea var. capitata F. rubra (Purple Cabbage) as Sustainable Natural Wool Dye

This study focussed on the dyeing wool fabrics with colourant purple Brassica oleracea var. capitata F. rubra. The process of dyeing was taken place at 60 ºC and pH 5. Adsorption and desorption isotherms experiments investigated by Langmuir and Frendulich models, Langmuir was fitted with the experim...

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Bibliographic Details
Published in:Asian journal of chemistry 2022-01, Vol.34 (1), p.60-66
Main Authors: Al-Qadri, Fatima A., Alsaiari, Raiedhah, Alsaiari, Mabkhoot, Musa, Esraa Mohamed, Shedaiwa, Iman Mohammad, Mohamed, Mervate Mohamed, Alkorbi, Faeza
Format: Article
Language:English
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Summary:This study focussed on the dyeing wool fabrics with colourant purple Brassica oleracea var. capitata F. rubra. The process of dyeing was taken place at 60 ºC and pH 5. Adsorption and desorption isotherms experiments investigated by Langmuir and Frendulich models, Langmuir was fitted with the experimental data dyeing adsorption than Freundlich model. The adsorption kinetic of dyeing experiments was studied by using pseudo-first and pseudo-second models and pseudo-second model was more suitable for wool dyeing experiment. The thermal stability of the dye (purple Brassica oleracea var. capitata F. rubra) was studied using thermogravimetric and differential thermal (TGA/DTG) analysis. The antimicrobial activity of purple cabbage methanolic extract recorded of high exhibited Staphylococus aureus (17-18 mm), weak against fungi (11-12 mm), moderate against Bacillus subtilis (14-15 mm) and no results against Escherichia coli. The results obtained from aqueous and petroleum were negative.
ISSN:0970-7077
0975-427X
DOI:10.14233/ajchem.2022.23407