Methods for improvement of enzymatic hydrolysis of lignocellullosic material

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United States of America Patent

PATENT NO 9512454
APP PUB NO 20140154746A1
SERIAL NO

14123556

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Abstract

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The present invention relates to a method of enzymatic hydrolysis of a lignocellulosic material, comprising the steps of: a) pretreating the lignocellulosic material to obtain a slurry having a pH of less than 6; b) adding NaOH, Ca(OH)2 and/or CaO to the slurry to increase its pH to at least 8, said addition being carried out at a slurry temperature of at least 60° C.; c) reducing the pH of the slurry to below 7; and optionally cooling the slurry from step b) to a temperature below 60° C.; and d) adding hydrolytic enzymes to the slurry from c) and allowing the slurry to hydrolyze wherein no washing of the slurry is performed prior to step d).

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Patent Owner(s)

Patent OwnerAddress
SEKAB E-TECHNOLOGY ABP O BOX 286 ORNSKOLDSVIK S-891 26

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Alriksson, Björn Örnsköldsvik, SE 4 43
Jönsson, Leif Umea, SE 9 44
Soudhama, Venkata Prabhakar Örnsköldsvik, SE 1 12

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