Production and characterization of pyocyanin pigment from Pseudomonas aeruginosa

Abstract

Pyocyanin, a blue-green phenazine pigment, is produced by various strains of Pseudomonas aeruginosa and has demonstrated diverse applications in medicine, agriculture, environmental protection, and nanotechnology. This study aimed to isolate and purify pyocyanin pigment from Pseudomonas aeruginosa cultures grown in different media, including succinate, glucose, King’s B, and Muller-Hinton broth. The chloroform extraction method was employed to extract the pigment, resulting in the separation of two layers, with the pyocyanin-enriched pigment residing in the lower blue layer containing chloroform. Subsequently, the pigment was subjected to further purification using column chromatography on a silica gel column, employing chloroform as the elution solvent. The purified pyocyanin was verified by thin-layer chromatography (TLC), ensuring its integrity and purity. The UV-Vis spectrophotometer was then employed to characterize the purified pigments, providing valuable insights into their spectral properties. The results indicate successful isolation and purification of pyocyanin pigment from Pseudomonas aeruginosa cultures in various media, demonstrating the versatility of the extraction method used. The characterization through UV-Vis spectrophotometry confirms the purity of the obtained pigment, validating its potential applicability in a wide range of fields, including medicine, agriculture, environmental management, and nanotechnology for the synthesis of silver nanoparticles. This research contributes to a better understanding of pyocyanin production in Pseudomonas aeruginosa and offers valuable insights into its potential applications, thereby opening new avenues for further exploration and exploitation of this valuable pigment in various industrial and scientific domains