Ecophysiology of Penicillium expansum and patulin production in synthetic and olive-based media

Olives and their derivatives, in particular olive oil, represent one of the most significant agricultural products Mediterranean basin. Storage under inadequate conditions poses serious problems concerning fungal contamination, with consequent defects potential mycotoxin production olives oils. Penicillium expansum represents postharvest pathogens several fruits, including olives. Not only it causes blue mold but also is relevant patulin producing species genus Penicillium. The aim this research was to evaluate ecophysiological governing growth PAT by P. strains previously isolated from Tunisian For purpose, four isolates were tested a synthetic medium (Czapek Yeast Autolysate, CYA) olive-based (OM) for ability grow produce different temperatures (4 °C, 15 °C 25 °C) 10 20 d. analysed HPLC-UV. Results showed that all able on media at temperatures. Different profiles found, showing CYA OM medium. At detected medium, while no 4 two media.