Electrophoresis
Electrophoresis
4 years ago

Synthesis of supermacroporous cryogel for bioreactors continuous starch hydrolysis

Gleidson Giordano Pinto Carvalho, Lorendane Millena Carvalho, Ederson Paulo Xavier Guilherme, Junio Cota, Igor Viana Brandi, Bruna Mara Aparecida de Carvalho, Sérgio Henrique Sousa Santos, Jocilane Pereira Oliveira
A bioreactor was built by means of immobilizing alpha-amylase from Aspergillus oryzae by encapsulation, through cryopolymerization of acrylamide monomers for the continuous starch hydrolysis. The starch hydrolysis was evaluated regarding pH, the concentration of immobilized amylase on cryogel, the concentration of starch solution and temperature. The maximum value for starch hydrolysis was achieved at pH 5.0, concentration of immobilized enzyme 111.44 mg amylase/gcryogel, concentration of starch solution 45 g/L and temperature of 35°C. The immobilized enzyme showed a conversion ratio ranging from 68.2 to 97.37%, depending on the pH and temperature employed. Thus, our results suggest that the alpha-amylase from A. oryzae immobilized on cryogel monoliths represents a potential process for industrial production of maltose from starch hydrolysis.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/elps.201700208

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