Constitutive lipase [s] from Thermophilic fungi isolated from mud and water samples collected from Aswan High Dam Lake[AHDl]

ABSTRACT

Twelve strains of thermophilic fungi isolated from mud and water samples of Aswan High Dam Lake [AHDL] were screened for their lipase[s] production. Four strains exhibited the highest lipolytic productivities, thus chosen for studying some factors affecting lipase[s] productivities. Maximum lipase[s] productivities simultaneously with mycelial dry weights were recorded for the four strains on 6th day of incubation at 45 degrees. Lack of lipid material in the production medium did not inhibit lipase[s] synthesis which refers to their constitutive nature. The present fungal lipases were able to hydrolyze both natural and synthetic glycerides. They were particularly active within a temperature range of 45-50 degrees and a pH range of 5.5-6.5. The involvement of the present fungi in the formation of milk products, butter flavors in food products and even in spoilage of groundnuts during storage is suggested