Patent ID: 7419809

Claim:
A method of converting cellulose within a cellulosic substrate to glucose, comprising: (a) treating a lignocellulosic substrate with a purified enzyme mixture, said purified enzyme mixture comprising: (i) cellobiohydrolase I (CBHI) enzyme, wherein said CBHI enzyme is a CBHI core or unmodified CBHI, wherein the CBHI core is present in an amount from 55 to 100% by weight relative to all CBHI enzyme in the enzyme mixture; and (ii) cellulase enzymes, wherein said cellulase enzymes comprise an endoglucanase (EG), an exo-cellobiohydrolase (CBH), and β-glucosidase, thereby providing glucose in an amount greater than an amount provided by the use of unmodified CBHI alone; and, (b) recovering said glucose.