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Methods for producing fermentation products

A technology for fermentation products and organisms, which can be used in fermentation, biofuels, etc., to solve the problems of complex, toxic and expensive fermentation organisms

Inactive Publication Date: 2010-07-14
NOVOZYMES NORTH AMERICA INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, pretreatment results in the release of compounds such as phenols and furans that inhibit and / or inactivate enzyme performance and are toxic to fermenting organisms
Toxic compounds can be removed, for example, by washing pretreated lignocellulose-containing material, but this is expensive and / or cumbersome to do

Method used

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  • Methods for producing fermentation products
  • Methods for producing fermentation products
  • Methods for producing fermentation products

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0366] The purpose of this experiment was to investigate the effect of introducing pretreated lignocellulose-containing material (in this case PCS filtrate) into a fermentation process based on starch-containing material (in this case a corn mash fermentation (SSF) process) .

[0367] PCS filtrate

[0368] At pH 5 (using 1M NH 4 OH-adjusted PCS) and 50°C, unwashed, acid-treated steam-exploded PCS (ie, pretreated corn stover) was hydrolyzed at 15% TS (total solids) for 48 hours in a batch reactor. Cellulase preparation A was added at a dose of 5 mg-EP / g-TS (about 15 mg-EP / g-CEL). After hydrolysis, the PCS hydrolyzate was filtered in a Buchner funnel under vacuum using glass fiber filter paper (Whatman: GF / D), and finally the filtrate was sterile filtered. The PCS filtrate (PCS-f) was analyzed using HPLC (see Table 11). Hydrolysis yield represents 90% conversion of cellulose (glucose only).

[0369] Table 1 - Composition of PCS Filtrate. All concentrations are expressed in...

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Abstract

The invention relates to methods for producing a fermentation product from a lignocellulose-containing material comprising: i) pre-treating lignocellulose-containing material; ii) introducing pre-treated lignocellulose-containing material into medium comprising fermentable sugars derived from starch-containing material; ii) fermenting using a fermenting organism.

Description

technical field [0001] The present invention relates to methods for producing fermentation products from lignocellulose-containing material. Background of the invention [0002] Due to the limited reserves of fossil fuels and concerns about greenhouse gas emissions, there has been increasing focus on renewable energy. [0003] Production of fermentation products from lignocellulose-containing material is known in the art and generally involves pretreatment, hydrolysis and fermentation of the lignocellulose-containing material. However, pretreatment results in the release of compounds such as phenols and furans that inhibit and / or inactivate enzyme performance and are toxic to the fermenting organism. Toxic compounds can be removed, for example, by washing the pretreated lignocellulose-containing material, but doing so is expensive and / or cumbersome. [0004] Accordingly, there is a need to provide other methods and processes for producing fermentation products from pretrea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/10
CPCC12P7/10Y02E50/16Y02E50/10
Inventor 吉勒莫·C·凯利
Owner NOVOZYMES NORTH AMERICA INC