ArticleBMC microbiology2025
Functionalization of textile using streptomyces erythrogriseus GH80 brown bioactive pigment with in silico studies.
Article in BMC microbiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
In our current study, we locate, summarize, and assess the information about the potential of Streptomyces strains as biological sources of bioactive pigments. We discovered S. erythrogriseus GH80, a new bacterium that produces brown pigment using 16 S rRNA. Bacteria produced the brownest pigment under optimal conditions: starch 2.0% (w/v), potassium nitrate 0.2% (w/v), dibasic sodium phosphate as a phosphorous source, 2% inoculum size, pH level 8, volume ratio 20%, 180 rpm rotation speed, 37°C temperature, and 8-day incubation. Using ethanol, pigment extraction worked effectively. The data showed no significant pigment change at 40, 50, or 60°C. Increased heat treatment of pigment extract to 70, 80, 90, and 100°C for 60 min maintained pigment retention at 96, 95, 92, and 90% of total content. The pigment extract demonstrated its maximum stability at alkaline pH values of 8.0, 8.5, 9.0, and 10.0 over the holding period. Full UV-visible spectroscopic screening was utilized to characterize pigments, with a λmax at 420 nm and extract probable absorption maxima between 380 and 460 nm. GC/MS analysis of the brown pigment extract found that terbinafine (66.46%) was the main component, followed by palmitic acid, methyl ester (8.55%), 10-Octadecenoic acid, methyl ester (4.32%), and other fatty acids. The brown pigment from S. erythrogriseus GH80 possesses biological activity, according to GC/MS analysis. S. erythrogriseus strain GH80 is a viable alternative to synthetic dyes, producing brilliant colors and providing self-cleaning and UV protection. At certain concentrations and pH levels, cotton showed the most brilliant color strength. The pigment improved the self-cleaning characteristics of the dyed materials by removing stains. Outdoor uses were possible with dyed fabrics’ UV protection. Due to its fastness, the pigment may be used in sustainable textile manufacturing. Treatment of wool and polyester textile samples showed greater pathogen-fighting efficiency. E. coli and P. aeruginosa inhibited cotton 100% (67.9% and 76.16%, respectively), while S. typhi inhibited polyester (86.6%). P. aeruginosa inhibited cotton/polyester 50/50 (62.059%).
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