Abstract

The current study was showed that the most fungal isolates that isolated from agricultural soils belong to Deuteromycetes, where Aspergillus terreus was appeared with 21.73 % and 43.23 % frequency and occurrence ratio respectively followed by A. niger with 17.39%, 35.7% of frequency and occurrence respectively. Moreover, fungal isolates that included A. fumigatus, A. terreus, Cladosporium ramotenellum and Lichtheimia corymbifera were revealed the highest productivity in the catalyse medium for the production of lipase. on the other hand, A. terreus was recorded the highest lipase composition with 47 mm of precipitation zone around colony on Congo red agar, as well as it was gave positive results of Sudan black B stain. Furthermore, the selected oleaginous fungal isolates were showed accumulative capacity of lipids reached to 23 % when cultivated in wheat straw medium as natural fermentation medium.

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