Annals of Microbiology

, 57:109 | Cite as

Characterisation and inhibition effect of cetrimide on collagenase produced byAspergillus flavus, isolated from mycotic ulcers

  • Yehia A. -G. MahmoudEmail author
  • Soad Mohamed Abu El-Souod
  • Sameh Mohamed El-Shourbagy
  • Anwer S. M. El-Badry
Applied Microbiology Original Articles


Collagenase was found to be the most important enzyme, produced by mycotic keratitis fungi. Therefore,Aspergillus flavus collagenase enzyme has been purified by ammonium sulphate precipitation, Sephadex G25 and DEAE-cellulose chromatography. Electrophoretic analysis for the purified enzyme indicated one subunit of molecular weight of 70–90 KDa when examining on SDS-PAGE. Cetrimide (cetyl trimethyl ammonium bromide) has been tested against the purified collagenase enzyme and indicated reversible competitive inhibitor (kis=0.15 mg/ml) with high promising activity. Cetrimide might be used to inhibit mycotic keratitis fungi.

Key words

Aspergillus flavus collagenase cetrimide mycotic ulcers 


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Copyright information

© University of Milan and Springer 2007

Authors and Affiliations

  • Yehia A. -G. Mahmoud
    • 1
    Email author
  • Soad Mohamed Abu El-Souod
    • 1
  • Sameh Mohamed El-Shourbagy
    • 2
  • Anwer S. M. El-Badry
    • 1
  1. 1.Mycology Research Unit, Botany Department, Faculty of ScienceTanta UniversityTantaEgypt
  2. 2.Ophthalmology Department, Faculty of MedicineTanta UniversityTantaEgypt

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