Process for enzymatic hydrolysis of lignocellulosic material and fermentation of sugars
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United States of America Patent
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May 29, 2018
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Nov 7, 2013
filing date -
Nov 9, 2012
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Abstract
The invention relates to a process for the preparation of a fermentation product from ligno-cellulosic material, comprising the following steps:
- a) optionally pre-treatment of the ligno-cellulosic material;b) optionally washing of the optionally pre-treated ligno-cellulosic material;c) enzymatic hydrolysis of the optionally washed and/or optionally pre-treated ligno-cellulosic material using an enzyme composition comprising at least two cellulase and whereby the enzyme composition at least comprises GH61;d) whereby less than 7.5 mg enzyme composition/g glucan (on dry matter and enzyme as protein) or less than 3.0 mg enzyme composition/g feedstock (on dry matter and enzyme as protein) is used; ande) fermentation of the hydrolysed ligno-cellulosic material to produce a fermentation product; andf) optionally recovery of a fermentation product;wherein before and/or during the enzymatic hydrolysis oxygen is added to the ligno-cellulosic material.
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