Anais do Simpósio Nacional de Bioprocessos
XXII National Bioprocesses Symposium (SINAFERM) XIII Enzymatic Hydrolysis of Biomass Symposium (SHEB)

The objective of the present study was to use the English potato residue as a substrate of the solid state fermentation (SSF) of the fungus Aspergillus niger for the production of the enzymes alpha amylase and amyloglucosidase. A spores solution of concentration 109 was used. The fermentations were conducted at 30 °C in a bacteriological oven, with 35%, 60% and 75% moisture content, at times of 48, 72 and 96 hours. Fermentation was carried out with and without the presence of the inducer (1 g corn starch). The study variable was the optimum temperature, necessary for the inclusion of enzymes in industrial routes. The temperatures analyzed were 30, 40, 50, 60 and 70 °C. The highest α-amylase activity was at 30 ° C yielding 192.8 U / g, in the presence of the inducer the temperature with the best activity was 70 ° C yielding 258.8 U / g. Glucoamylase presented a lower temperature preference, 30 ° C without the inductor and 40 ° C with the presence of inductor, with an activity of 230.41 U / g and 313.81 U / g respectively.