Enzyme hydrolysis kinetics of micro-grinded maize straws
Journal
Bioresource Technology
Journal Volume
240
Pages
177-180
Date Issued
2017
Author(s)
Abstract
This study applied micro-grinding to disintegrate the maize straws and then use the micro-grinded straws of particle sizes particle size 53¡V61, 80¡V96 or 150¡V180?£gm, for subsequent enzyme hydrolysis tests. The reducing sugar productivity was increased with reducing particle size. A kinetic model considering product inhibition was developed as follows t=aln[Formula presented]+b[P], where S, P and t are the substrate, enzyme and hydrolysis time, respectively, and a and b are fitting parameters. The initial substrate concentration is proportional to the total exposed surface area. Additionally, the mechanical grinding can increase the biomass affinity for enzyme attack, suggesting the enhanced local action of shearing on the fiber matrix surfaces. The enhanced hydrolysis efficiency of the micro-grinded straws is welcomed by the subsequent refinery steps. ? 2017 Elsevier Ltd
Subjects
Enzyme hydrolysis
Micro-grinding
Model
Straws
Type
journal article