Skip to main content
Log in

Production of extracellular lipase from psychrotrophic bacterium Oceanisphaera sp. RSAP17 isolated from arctic soil

  • Original Paper
  • Published:
Antonie van Leeuwenhoek Aims and scope Submit manuscript

Abstract

Cold-active extracellular lipases produced by different psychrotrophs are important for various industrial applications. We have isolated a Gram-negative, rod-shaped, aerobe, non-pigment producing psychrotrophic bacterial strain RSAP17 (MTCC 12991, MCC 4275) from the unexplored Arctic soil sample of NyAlesund, Svalbard, Norway (78° 55″ N, 11° 54″ E). The detailed morphological, biochemical, and molecular characteristics were investigated to characterize the isolate RSAP17. Analyses of the 16S rDNA sequence of strain RSAP17 (Accession no. MK391379) shows the closest match with Oceanisphaera marina YM319T (99.45%) and Oceanisphaera sediminis TW92 JCM 17329T (97.40%). The isolate is capable of producing extracellular lipase but not amylase, cellulase or urease. The optimal parameters for lipase production have been found in tributyrin based (10 mL/L) agar media supplemented with 3% (w/v) NaCl after 2–3 days of incubation at 20–22 °C temperature and pH 9 at shaking condition. We have purified the extracellular lipase from the RSAP17 grown culture supernatant through 75% ammonium sulfate precipitation followed by dialysis and DEAE cellulose column chromatography. The invitro lipolytic activity of the purified lipase enzymes has been done through zymogram analysis. The molecular weight found for the lipase is 103.8 kD. The optimal activity of the purified lipase has been found at 25 °C and pH 9. MALDI-TOF-MS study of the purified lipase showed the highest match with the sequence of prolipoprotein diacylglyceryl transferase with 44% sequence coverage. Further study on large-scale production, substrate utilization and enzymatic kinetics of this lipase could unravel its possibility in future biotechnological applications.

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

Similar content being viewed by others

References

Download references

Acknowledgements

We are grateful to Dr. Pulak Kumar Maiti for his suggestion on analyzing the phylogeny of the strains. We are also especially thankful to Mr. Pinaki Hazra for his technical help in column chromatography.

Funding

There is no financial support to declare.

Author information

Authors and Affiliations

Authors

Contributions

RU performed all the experiments, interpreted data and prepared the manuscript; PR helped in procuring sample and edited the manuscript. SM conceptualized the research, designed the experiments, wrote and edited the manuscript.

Corresponding author

Correspondence to Sukhendu Mandal.

Ethics declarations

Conflict of interest

The author declared no competing financial and/or non-financial interest.

Additional information

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

Uddin, M.R., Roy, P. & Mandal, S. Production of extracellular lipase from psychrotrophic bacterium Oceanisphaera sp. RSAP17 isolated from arctic soil. Antonie van Leeuwenhoek 114, 2175–2188 (2021). https://doi.org/10.1007/s10482-021-01671-y

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10482-021-01671-y

Keywords

Navigation