Effect of water activity and temperature on the growth and sporulation of Aspergillus niger P.E.L. van Tieghem

Authors

  • Francisca Sempere Universidad Politécnica de Valencia
  • M. P. Santamarina Departamento de Ecosistemas Agroforestales. Universitat Politècnica de València.

DOI:

https://doi.org/10.46583/nereis_2021.13.817

Keywords:

Water activity, Aspergillus niger, temperature, sporulation, fungal ecophysiology

Abstract

The effect of water activity (0.85, 0.90, 0.95, 0.98, 0.995) on the growth and sporulation of Aspergillus niger was studied at different temperatures (15 and 25ºC). Maximum fungal growth rate occurred at water activity of 0.98, with growth being observed throughout the tested interval except at 0.85 and 15ºC. In addition, morphological and cultural features were studied in the different experimental conditions. This species sporulated at almost all conditions. Both factors and their interaction had a significant effect on the development of the species.

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Published

2021-11-15