An antimicrobial metabolite n- hexadecenoic acid from marine sponge-associated bacteria < em > Bacillus subtilis < /em > effectively inhibited biofilm forming multidrug-resistant < em > P. aeruginosa < /em >

Biofouling. 2023 May-Jul;39(5):502-515. doi: 10.1080/08927014.2023.2232722. Epub 2023 Jul 24.ABSTRACTEffective drug candidates to obstruct the emergence of multidrug-resistant pathogens have become a major concern. A potent antimicrobial producer was isolated from a marine sponge designated as MSI38 and was identified as Bacillus subtilis by 16SrDNA sequencing. The active antimicrobial fraction was purified, and the metabolite was identified as n-hexadecanoic acid by spectroscopic analysis. The fish-borne pathogen Pseudomonas aeruginosa FP012 was found to be multidrug-resistant and poses a risk of disease to food handlers and consumers in general. The compound showed a potent bactericidal effect against P. aeruginosa FP012 with a MIC of 31.33 ± 5.67 mg L-1 and MBC of 36.66 ± 5.17 mg L-1. The time-based biofilm inhibitory potential of MSI38 and ciprofloxacin was analyzed by confocal laser scanning microscopy. A synergistic effect of MSI38 and ciprofloxacin on biofilm showed 85% inhibition.PMID:37482932 | DOI:10.1080/08927014.2023.2232722
Source: Biofouling - Category: Molecular Biology Authors: Source Type: research