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Extraction, Purification, and Characterization of Potential Bioactive Compounds Produced by Janthinobacterium lividum TAJX1901Agbakpo, Andy Elorm 01 August 2023 (has links) (PDF)
Underexplored environments such as soil samples continue to be an untapped source of bacterial strains with great potential to produce secondary metabolites for medicinal applications. As a result, these microorganisms represent a broad and yet unknown reservoir of new strains capable of producing these novel compounds. The current research primarily seeks to perform the isolation, purification, and characterization of secondary metabolites from a soil bacterium (Janthinobacterium lividum TAJX1901). The isolated soil bacterium was successfully cultured on rich media agar plates, followed by extraction using methanol and chloroform. The purification methods utilized include flash column chromatography, preparative thin-layer chromatography, and high-performance liquid chromatography. For structural elucidation, UV-Vis analysis, infrared spectroscopy, and nuclear magnetic resonance spectroscopy were employed. The extraction resulted in a dominant violet pigment soluble in methanol. Results revealed the presence of highly conjugated, polar, and aromatic compounds (violacein or relatives of violacein) and dioctyl phthalate (a contaminant).
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