Produção de biossurfactante por Aspergillus fumigatus utilizando resíduos agroindustriais como substrato Solid-state biosurfactant production by Aspergillus fumigatus using agricultural residues as substrate

Abstract

The objective of this study was to investigate biosurfactant production in solid state by Aspergillus fumigatus in fixed-bed column bioreactors using substrate based on agricultural residues. Without a supplementary carbon source the highest emulsifying activity (EA) was 11.17 emulsifying units (EU) g-1 of substrate at an aeration rate of 148 mL h-1g-1 but in the presence of diesel oil the highest EA value was 9.99 EU g-1 at an aeration rate of 119 mL h-1g-1 of substrate while supplementation with soya oil resulted in only 8.47 EU g-1 of substrate at an aeration rate of 119 mL h-1g-1.

Keywords

• filamentous fungi
• biosurfactant
• solid-state fermentation