PROCESS FOR ENZYMATIC HYDROLYSIS OF LIGNOCELLULOSIC MATERIAL AND FERMENTATION OF SUGARS
First Claim
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1. A process for the preparation of a sugar product from ligno-cellulosic material, comprising the following:
- 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; and
e) optionally recovery of a sugar product;
wherein after the pre-treatment and before and/or during the enzymatic hydrolysis oxygen is added to the ligno-cellulosic material.
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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; and
- e) fermentation of the hydrolysed ligno-cellulosic material to produce a fermentation product; and
- f) 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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Citations
20 Claims
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1. A process for the preparation of a sugar product from ligno-cellulosic material, comprising the following:
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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; and e) optionally recovery of a sugar product; wherein after the pre-treatment and before and/or during the enzymatic hydrolysis oxygen is added to the ligno-cellulosic material. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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2. A process for the preparation of a fermentation product from ligno-cellulosic material, comprising the following:
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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; and e) fermentation of the hydrolysed ligno-cellulosic material to produce a fermentation product; and f) optionally recovery of a fermentation product; wherein after the pre-treatment and before and/or during the enzymatic hydrolysis oxygen is added to the ligno-cellulosic material. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification