Journal of Environmental Biology

Characterization of a pigmented Brevundimonas sp. isolated

from red mud pond samples of a bauxite mine

S. Panigrahi¹ and D.P. Panigrahi²*

¹Department of  Botany, College of Basic Science and Humanities, Odisha University of Agriculture and Technology, Bhubaneswar-751 003, India

²Department of Botany, Balimela College of science and Technology, Malkangiri-764 051, India

*Corresponding Author Email : durga.panigrahi@gmail.com                  *ORCiD: https://orcid.org/0000-0002-0792-9301

Received: 26.02.2022                                                                                          Revised: 03.06.2022                                                             Accepted: 14.10.2022

Abstract

Aim: The present study aimed to isolate useful bacterial strains of industrial importance from the red mud pond of Utkal Alumina, Odisha, India.

Methodology: Samples were collected, serially diluted and spread on Nutrient Agar medium. An orange-colored bacterium was isolated and subjected to molecular characterization through 16S rDNA analysis followed by phylogenetic analysis. The pigment was isolated and characterized through FTIR study. Antimicrobial and radical scavenging activities were also studied.

Results: The isolate was identified as Brevundimonas sp. FTIR study showed the pigment to be a beta-carotene, which significantly increased under salt and pH stress, however, was severely affected under metallic stress conditions. The ethanolic extract showed a moderate antibacterial activity. The pigment showeda good radical scavenging activity of approximately 86 % in 30 min.

Interpretation: Species of Brevundimonas have not been reported in red mud ponds. The isolated pigment shows a good radical scavenging activity in vitro. It may be useful for cosmetic industry.  

Key words: Red mud, 16S rDNA, Alkali tolerant, Beta-carotene, Brevundimonas, FTIR spectroscopy

Copyright © 2023 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).