Skip to main content
Log in

Kinetic and thermodynamic characterization of novel alkaline lipase from halotolerant Bacillus gibsonii

  • Original Paper
  • Published:
Archives of Microbiology Aims and scope Submit manuscript

Abstract

A halotolerant bacterial strain isolated and identified as Bacillus gibsonii was used for extracellular lipase production. The bacterial strain was able to grow up to 1200 mM salt concentration and showed maximum growth at 600 mM NaCl concentration. The present study includes production of extracellular lipase enzyme and characterization of partially purified lipase with respect to its kinetic and thermodynamic behaviour. Maximum lipase activity was observed at 60 °C under alkaline pH (9.0) condition. The kinetic parameters such as Vmax, Km and Kcat were calculated as 158.73 U/mL, 0.539 mM and 483.93 min−1 at 60 °C, respectively, suggested thermostable nature of the enzyme. The thermal inactivation energy [Ea(d)] was calculated as 66.98 kJ/mol. The values of Gibb’s free energy (86.31 kJ/mol), enthalpy (64.26 kJ/mol) and entropy (− 66.21 × 10–3 kJ/mol/K) for the enzyme inactivation obtained at 60 °C corroborated the assumption that 60 °C was the optimum temperature. Further, the deactivation rate constant (kd) values calculated at 60 °C and 80 °C were found to be 0.0907 and 0.182 min−1, respectively, which suggested that enzyme was more stable at 60 °C and it was partly inactivated at 80 °C.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Similar content being viewed by others

References

Download references

Acknowledgements

The authors are thankful to University Grant Commission (UGC), New Delhi, Government of India for providing financial support for the research work. Author is obliged to The Head, Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow (India) for providing the laboratory facilities during the investigation.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to D. P. Singh.

Ethics declarations

Conflict of interest

Authors declare that this manuscript does not have any conflicts of interest regarding the financial, scientific contents and otherwise.

Additional information

Communicated by Erko Stackebrandt.

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Sonkar, K., Singh, D.P. Kinetic and thermodynamic characterization of novel alkaline lipase from halotolerant Bacillus gibsonii. Arch Microbiol 203, 2199–2209 (2021). https://doi.org/10.1007/s00203-021-02197-7

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00203-021-02197-7

Keywords

Navigation