Abstract
As an investigative study, the potent bacterium Serratia marcescens SB08 was screened from the enteric gut of sulfur butterfly (Kricogonia lyside). Its pigment potential was tested, and the pigment was identified as prodigiosin by structural studies using High Performance Liquid Chromatography (HPLC), Gas Chromatography–Mass Spectroscopy (GC–MS), Fourier Transform Infrared Spectroscopy (FTIR) and Nuclear Magnetic Resonance (NMR). Various conditions, including pH, reaction time, temperature, color intensity, and fastness properties, were studied for pure silk, China silk, and cotton yarns, and the conditions for effective dyeing were optimized. Further, the pigment’s antimicrobial pursuit was tested to counter the common pathogens Bacillus subtilis MTCC2388, Escherichia coli MTCC443, Klebsiella pneumonia MTCC109, Proteus vulgaris MTCC1771, and Pseudomonas aeruginosa MTCC1688. The pigment was largely effectual and exhibited utmost zones of inhibition, thus demonstrating the finest antimicrobial effect against the microbes tested. The textile yarn materials soaked with this intrinsic dye pigment also exhibited antimicrobial action.
Highlights
Dyes/pigments sourced from plants, animals, fruits, insects, minerals, etc. have a long history of application as colorants and for other uses
Synthetic colorants took the place of natural colorants and are still dominating the industry despite their toxic and harmful effects to humans and the environment [2]
The intention is to bring bacterial colorants from the research field to the commercial world for mass production of biocolorants in innate dye markets. We undertook this investigation as a probing study to analysis the dyeing properties and the inherent antimicrobial activities of pigment extracted from Serratia marcescens SB08, an insect-associated bacterium, with a view to developing protective clothing
Summary
Dyes/pigments sourced from plants, animals, fruits, insects, minerals, etc. have a long history of application as colorants and for other uses. Being easy to extract from prospective natural sources, colors formed by innate dyes and pigments are brilliant They are eco-friendly and nontoxic and nonallergic with antimicrobial chattels as well, making them safer for humans too. There is a big scope for the use of innate colorants in products as substitute for artificial colorants, which are toxic and have adverse effects on all forms of life In this backdrop, the textile industry has recently made a significant move toward innate colorants by gradually switching to them from synthetic colorants. The intention is to bring bacterial colorants from the research field to the commercial world for mass production of biocolorants in innate dye markets We undertook this investigation as a probing study to analysis the dyeing properties and the inherent antimicrobial activities of pigment extracted from Serratia marcescens SB08, an insect-associated bacterium, with a view to developing protective clothing
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