Pre-treated biomass having enhanced enzyme accessibility

摘要

This invention is to a biomass composition of 5 and 6 carbon sugars, lignin, and cellulose which has been steam exploded and the composition has a very high enzyme accessibility at 24 hours for hydrolysis.

主权项

1. A composition of biomass comprising a solid and a liquid, wherein the solid and the liquid in the composition comprise an amount of C5's, an amount of C6's, and an amount of furfural, wherein the amount of C5's is a weight sum of arabinan and xylan including monomers, dimers, oligomers and polymers of arabinose and xylose in the liquid and solid of the composition, the amount of C6's is a glucan content by weight including monomers, dimers, oligomers and polymers of glucan in the liquid and solid of the composition; wherein the composition is prepared by a continuous process which comprises a pretreatment of a starting material to form the biomass, said pretreatment comprises a steam explosion reactor equipped with a blow-line and wherein the composition is further characterized as having a 24 hour enzyme accessibility of at least 88% using an enzyme amount equivalent to 30 FPU/g glucans.