Avaliação do potencial de síntese de biossurfactante por fungo da caatinga.

Abstract

The Caatinga Biome is a potential source for obtaining bioactive compounds synthesized by microorganisms, such as biosurfactants, amphipathic molecules capable of emulsifying hydrocarbons and of wide industrial application. The objective of this study was to evaluate the potential of biosurfactant synthesis by a fungus isolated from the Caatinga biome, collected in the city of Sume and stored in the collection of filamentous fungi of CDSA/UFCG. In this research, the fungus CDSA109 was evaluated for the production of biosurfactants in Submerged Fermentation and the parameters Emulsification Index (EI), emulsion stability (E24) and Emulsification Activity (EA) were analyzed. The biosurfactant produced was characterized in relation to thermal stability and pH. The results demonstrated that CDSA109, identified as belonging to the genus Aspergillus, is able to synthesize biosurfactant under conditions exposed with I24 of 88.3%, to maintain the emulsion stable at 60ºC for 60 minutes and in pH ranges of 5.0 and 7.0. In this way, the isolated Caatinga biome filamentous fungus demonstrated its potential to produce biosurfactant with interesting characteristics for future industrial applications.