Enzyme loading dependence of cellulose hydrolysis of sugarcane bagasse

AUTOR(ES)

Martín, Carlos, Rocha, George Jackson de Moraes, Santos, Julliana Ribeiro Alves dos, Wanderley, Maria Carolina de Albuquerque, Gouveia, Ester Ribeiro

FONTE

Quím. Nova

DATA DE PUBLICAÇÃO

2012

RESUMO

The enzymatic hydrolysis of steam-pretreated sugarcane bagasse, either delignified or non-delignified, was studied as a function of enzyme loading. Hydrolysis experiments were carried out using five enzyme loadings (2.5 to 20 FPU/g cellulose) and the concentration of solids was 2% for both materials. Alkaline delignification improved cellulose hydrolysis by increasing surface area. For both materials, glucose concentrations increased with enzyme loading. On the other hand, enzyme loadings higher than 15 FPU/g did not result in any increase in the initial rate, since the excess of enzyme adsorbed onto the substrate restricted the diffusion process through the structure.

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