Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7074868 | Bioresource Technology | 2015 | 5 Pages |
Abstract
The pretreatment process used and the nature of the biomass feedstock will influence the role that accessory enzymes can play in synergistically interacting with cellulases to effectively deconstruct the substrate. The work reported here assessed the possible boosting effects of the xylanase and lytic polysaccharide monooxygenase (AA9, formerly known as GH61) on the hydrolytic potential of cellulase enzyme mixtures during hydrolysis of steam pretreated poplar and corn stover at high (10-20% w/v) substrate concentrations. A higher proportion of xylanase was required when the substrate had a relatively high xylan content and at high substrate concentrations. In contrast, a relatively small amount of AA9 (about 2Â mg/g cellulose) was enough, regardless of the nature or concentration of the substrate. The overall protein loading required to achieve effective hydrolysis of high concentrations of pretreated biomass substrates could be substantially reduced by optimizing the ratio of enzymes in the “cellulase” mixture.
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Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Jinguang Hu, Richard Chandra, Valdeir Arantes, Keith Gourlay, J. Susan van Dyk, Jack N. Saddler,