Effect of sun light on the survival of Escherichia coli in beach sand

Authors

  • Regine Helena Silva dos Fernandes Vieira Universidade Federal do Ceará
  • Daniel Rodrigues dos Santos Universidade Federal do Ceará
  • Mônica Pimenta de Novaes Castelo Branco Instituto de Ciências do Mar, Universidade Federal do Ceará.
  • Silvana Saker Sampaio Departamento de Engenharia de Pesca, Universidade Federal do Ceará.
  • Oscarina Viana de Sousa Instituto de Ciências do Mar, Universidade Federal do Ceará.

DOI:

https://doi.org/10.32360/acmar.v48i1.5857

Keywords:

beach sand, survival, recovery, Escherichia coli

Abstract

This research work was aimed at appraising the survival of a  Escherichia coli’s strain as resistant to the nalidixic  acid, through inoculation into sand samples exposed to sun light. The experimental layout was designed in six  microcosmos, namely: (a) working experiment – sterilized sand plus sterile saline plus E. coli ; (b) control experiment –  non-sterilized sand plus sterile saline plus  E. coli ; (c) blank control – sterilized sand + sterile saline, with three of them  being exposed to sun light and three kept in the dark, protected against sun light’s influence. Considering the experimental  microcosmos and after a 48-hour period of sun light exposition had elapsed, no E. coli strain was recovered what bears out  the fact that the ultraviolet irradiation is lethal to a viable cell. The samples from inoculated sand were not found to be  favorable to the growth of  E. coli cultivation broth when exposed to sun light.

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Published

2015-07-01

How to Cite

Vieira, R. H. S. dos F., dos Santos, D. R., Castelo Branco, M. P. de N., Sampaio, S. S., & de Sousa, O. V. (2015). Effect of sun light on the survival of Escherichia coli in beach sand. Arquivos De Ciências Do Mar, 48(1), 20–26. https://doi.org/10.32360/acmar.v48i1.5857

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