Itisha Singh
Seven species of Microsporum, 4 of Trichophyton and 1 Epidermophyton including 55 species belonging to 33 genera were studied for extracellular keratinase. The preliminary screening was done as their ability to develop clearing zone formation. The keratinase of Microsporum species ranged from 50-300ku/ml and of Trichophyton 100-140ku/ml while that of Epidermophyton was 20ku/ml.