Influence of age on ergosterol content in mycelium of Aspergillus ochraceus

Ergosterol has been suggested as a paramoter for studying the content and evolution of fungal infestation in different products. Important differences in this parameter have been described for different genera and species. A study of the relationship between ergosterol content and dry mass in a strain of Aspergillus ochraceus , which is able to produce an antifungal agent, has therefore been carried out in order to use this parameter to accurately evaluate the fungal mass of this strain. We report herein our research work to determine the ergosterol content of the mycelial mass of our mould and how it changes with the fungal age.