ISSN: 0973-7510

E-ISSN: 2581-690X

Research Article | Open Access
Revathy Rajan1 , Ajith Sudhakaran1, Anita Ravindranath1, Rajathy Sivalingam2 and Ratheesh Kumar2
1Department of Microbiology, Central Coir Research Institute, Coir Board, Kerala, India.
2School of Environmental Studies, Cochin University of Science and Technology, Kerala, India.
Article Number: 7757 | © The Author(s). 2022
J Pure Appl Microbiol. 2022;16(3):1696-1704. https://doi.org/10.22207/JPAM.16.3.10
Received: 12 April 2022 | Accepted: 06 June 2022 | Published online: 12 July 2022
Issue online: September 2022
Abstract

The mounting disquiets about the usage of precarious chemicals in the textile industry have steered to the development of eco-friendly and biological methods of fiber processing in the ever-escalating horizon of textile fibers. The current study targets the isolation, identification, and screening of lignin-degrading bacteria from termite gut microflora which could be employed in the textile trade, especially in coir industries for developing a biological method for softening coir fibers. Based on the morphology and taxonomic keys, termites used in the study were identified as Odontotermes obesus. The bacteria isolated from the termite gut having lignolytic activity were picked by using the methylene blue dye decolorizing method. The same was confirmed by using tannic acid. The isolates were then identified as Kosakonia oryzendophytica and Pseudomonas chengduensis by 16s rRNA sequencing. The isolates were further checked for their ability to produce extracellular lignolytic enzymes. The enzyme concentration was found to be significantly higher in the medium containing the microbial consortium than in those with the individual cultures. The consortium filtrate has MnP activity of 41.6 U/mL, LiP activity of 114.3 U/mL, and laccase activity of 61.85 U/mL at 72 hours of incubation. It was found that the enzyme activities were increased considerably until 72 hours of incubation but showed an insignificant increase at 96 hours.

Keywords

Lignolytic, Peroxidases, Laccase, Facultative Anaerobe

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