Skip to main content
Log in

Isolation and characterization of sophorolipid producing yeast from fruit waste for application as antibacterial agent

  • Original Article
  • Published:
Environmental Sustainability Aims and scope Submit manuscript

Abstract

The present study was primarily emphasized on isolation of yeast from diverse samples and screening for potential biosurfactant producer. Yeast isolates AH16, AH23, AH46 and AH62 showed effective oil displacement activity and were confirmed to be potential biosurfactant producers. Among them, maximum yield of 4.23 g/l of crude biosurfactant was extracted from isolate AH62 within 96 h of fermentation which also showed effective emulsification activity of 76.4 ± 0.38% when tested against diesel. It could further decrease the surface tension of water from 72 to 31.4 ± 0.38 mN/m and was hence selected for subsequent study. The isolate was identified as Candida sp. AH62 through phylogenetic analysis. Characterization of extracted biosurfactant using thin layer chromatography (TLC), Fourier transform infrared spectroscopy (FTIR), high performance liquid chromatography (HPLC), gas chromatography (GC) and liquid chromatography–tandem mass spectrometry (LC–MS/MS) revealed sophorolipid to exist as a heterogeneous mixture of lactonic and acidic forms. The isolated sophorolipids showed potential antibacterial activity towards pathogenic Gram negative and Gram positive bacteria.

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

Similar content being viewed by others

References

Download references

Acknowledgements

Author KA would like to thank UGC-BSR-RFSMS and authors thank DST PURSE (C-DST-PURSE-II/43/2018) for providing financial support to carry out this study.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Hameeda Bee.

Ethics declarations

Conflict of interest

The authors state that they have no conflict of 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

Archana, K., Sathi Reddy, K., Parameshwar, J. et al. Isolation and characterization of sophorolipid producing yeast from fruit waste for application as antibacterial agent. Environmental Sustainability 2, 107–115 (2019). https://doi.org/10.1007/s42398-019-00069-x

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s42398-019-00069-x

Keywords

Navigation