The effect of pH and NaCl on the aflatoxin production of Aspergillus parasiticus

Document Type : Research Paper

Authors

1 M.Sc. Student of Plant Pathology, Assistant Department of Plant Protection, Faculty of Agriculture, Lorestan University, Iran

2 Accociate Professors, Department of Plant Protection, Faculty of Agriculture, Lorestan University, Iran

3 Assistant Professor, Department of Plant Protection, Faculty of Agriculture, Lorestan University, Iran

Abstract

Aspergillus parasiticus causes adverse effects on its consumers of food infected with this fungal toxins by producing aflatoxin B1. In this study, the effects of different treatments of pH and NaCl concentration on the growth and toxin production of this fungus was investigated using three methods including coconut-agar medium, TLC, and HPLC. Based on our examinations, the aflatoxins produced by this fungus had fluorescence effect under UV light. The highest growth and production toxin of A. parasiticus was, respectively, occurred at pH 6 and 5 and NaCl concentration of 3 and 0 percent. High concentrations of salt suppressed this fungi growth and consequently its toxin production. Aflatoxin B1 was the most common toxin produced by A. parasiticus. As a result, by controlling these two factors, the growth and aflatoxin production of this fungus can be largely inhibited to avoid its adverse effects.
 
 

Keywords

References

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Iranian Journal of Plant Protection Science
Volume 46, Issue 2 - Serial Number 2
Autumn & Winter
October 2015
Pages 259-267

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History

  • Receive Date: 28 June 2015
  • Revise Date: 13 December 2015
  • Accept Date: 30 December 2015

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