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Screening, optimization, and molecular characterization of cold-active lipase producing Bacillus cereus I13 from Arctic sediments

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Abstract

Cold-active enzymes are extremozymes produced by psychrophiles, and have attracted much attention as biocatalysts due to their capacity to resist extreme reaction conditions in industrial processes. This study aimed to isolate bacterial strains from Arctic fjord sediments and screen them for lipase enzyme production. Out of 73 isolates, 8 were identified as good lipase producers. Bacillus cereus I13 exhibited the highest activity of 11.42 U/mL on the 4th day of incubation at 20 °C, along with the large zone of clearance of 27 mm. Optimum conditions for lipase production were identified as pH 7.0, a temperature of 20 °C, and 96 h of incubation, with glucose as a carbon source, yeast as a nitrogen source, and olive oil as a substrate. Bacillus cereus I13 has the potential to be used for the industrial production of cold-active lipase, and this study provides evidence that potent isolates can effectively increase lipase production.

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Data Availability

The data supporting the findings of this study are available from the corresponding authors upon reasonable request.

Abbreviations

BLAST:

Basic Local Alignment Search Tool

CAGR:

Compound Annual Growth Rate

DNA:

Deoxyribonucleic acid

IU:

International Unit

MTCC:

Microbial Type Culture Collection

mM:

Millimolar

PCR:

Polymerase Chain Reaction

ROA:

Rhodamine Olive oil Agar

POA:

Phenol red Olive oil Agar

p-NPP:

Para-nitro phenyl palmitate

rRNA:

Ribosomal Ribonucleic acid

UV:

Ultra violet

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Acknowledgment

The first author is grateful to the Council of Scientific and Industrial Research (CSIR) for the awarded fellowship. The authors wish to thank the Department of Marine Biology, Microbiology & Biochemistry, Cochin University of Science and Technology for providing the necessary facilities to carry out the work. The authors are thankful to the Director, National Centre for Antarctic and Ocean Research, Ministry of Earth Sciences, for logistic support and facilities for sample, collection, and analysis.

Funding

The Council of Scientific and Industrial Research (CSIR) supported the first author with grant no.09/239(0534)2018-EMR-1.

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Contributions

HK designed and performed the experiments, analyzed the data, and prepared the manuscript. VS helped to perform the experiments. SK helped in reviewing and finalizing the manuscript. AP helped to analyze the data and in reviewing the manuscript. KKP helped with logistical support and funding. MH conceptualized the project, designed the experiments, and reviewed and finalized the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Hafsa Kattatheyil.

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Kattatheyil, H., Sajeela, V., Kabeer, S.S. et al. Screening, optimization, and molecular characterization of cold-active lipase producing Bacillus cereus I13 from Arctic sediments. Biologia 79, 1041–1055 (2024). https://doi.org/10.1007/s11756-024-01610-y

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  • DOI: https://doi.org/10.1007/s11756-024-01610-y

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