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Biodegradation of bisphenol A using psychrotolerant bacterial strain Pseudomonas palleroniana GBPI_508

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Abstract

A psychrotolerant bacterial strain of Pseudomonas sp. (P. palleroniana GBPI_508), isolated from the Indian Himalayan region, is studied for analyzing its potential for degrading bisphenol A (BPA). Response surface methodology using Box–Behnken design was used to statistically optimize the environmental factors during BPA degradation and the maximum degradation (97%) was obtained at optimum conditions of mineral salt media pH 9, experimental temperature 25 °C, an inoculum volume of 10% (v/v), and agitation speed 130 rpm at the BPA concentration 270 mg L−1. The Monod model was used for understanding bacterial degradation kinetics, and 37.5 mg−1 half saturation coefficient (KS) and 0.989 regression coefficient (R2) were obtained. Besides, the utmost specific growth rate µmax was witnessed as 0.080 h−1 with the GBPI_508 during BPA degradation. Metabolic intermediates detected in this study by GC–MS were identified as valeric acid, propionic acid, diglycolic acid, and phenol. The psychrotolerant bacterial strain of Pseudomonas sp. (P. palleroniana GBPI_508), isolated from the Indian Himalayan region has shown good potential for remediation of BPA at variable conditions.

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Acknowledgements

Authors are grateful to the Director GBP-NIHE for extending their facilities and the Department of Science and Technology-Water Technology Initiative (DST-WTI) [DST/TM/WTI/2K15/63C] for financial support. We are also thankful to AIRF-JNU for providing facilities for GC–MS analysis.

Funding

This research work was supported by Department of Science and Technology-Water Technology Initiative, DST/TM/WTI/2K15/63C.

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Correspondence to Vasudha Agnihotri.

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The authors declare that they have no conflict of interest.

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Communicated by Erko Stackebrandt.

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Thathola, P., Agnihotri, V., Pandey, A. et al. Biodegradation of bisphenol A using psychrotolerant bacterial strain Pseudomonas palleroniana GBPI_508. Arch Microbiol 204, 272 (2022). https://doi.org/10.1007/s00203-022-02885-y

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  • DOI: https://doi.org/10.1007/s00203-022-02885-y

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