GC-MS Analysis of Bio-active Molecules Derived from Paracoccus pantotrophus FMR19 and the Antimicrobial Activity Against Bacterial Pathogens and MDROs

Abstract

The present investigation is focused on the study of chemical composition of a bioactive compound derived from a rumen isolate Paracoccus pantotrophus FMR19 using GC-MS and to find out the antibacterial activity of the extracted crude bioactive compounds against multidrug resistant organisms (MDROs) and other clinical pathogens. GC-MS analysis revealed that P. pantotrophus FMR19 produced eight major compounds that have been reported to exhibit antimicrobial property. The main components identified from hexane fraction are long chain alkanes, fatty alcohols, fatty acid methyl ester and aromatic hydrocarbons. These molecules are not only active against clinical pathogens such as Salmonella sp. and Proteus sp. and also effective against MDROs such as Metallo β lactamase and Pan drug resistant bacterial strains and Methicillin resistant Staphylococcus aureus.

Keywords: Antibacterial activity; Bioactive compound; GC–MS; Multi-drug resistant organisms; Paracoccus pantotrophus FMR19; Rumen bacteria.

Fig. 1

GC–MS chromatogram of the hexane fraction of the crude compounds from Paracoccus pantotrophs

Fig. 2

Zone of inhibition against microbial pathogens such as a Proteus sp., b Salmonella sp., c Pseudomonas aeruginosa, d Salmonella paratyphi B, e Staphylococcus aureus and f Salmonella paratyphi A. Control: DMSO; T test: 10 µg of crude compounds in DMSO

Fig. 3

Zone of inhibition against multi drug resistant organisms such as a MBL, b PDR, and c MRSA. Control: DMSO; T test: 10 µg of crude compounds in DMSO