Method for producing sugar liquid

A manufacturing method and technology of sugar solution, applied in the direction of sugar production, sugar juice purification, chemical instruments and methods, etc., can solve the problem of cost, remove objects limited to hydrophobic compounds, remove low efficiency and other problems, and achieve the goal of improving efficiency Effect

Active Publication Date: 2012-08-15
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the hydrolysis of cellulose-containing biomass, there is a problem that sugars such as glucose and xylose are decomposed simultaneously with the decomposition of cellulose or hemicellulose components, and furfural, methylol, etc. are also produced. by-products such as furan compounds such as furfural, or organic acids such as formic acid, acetic acid, and levulinic acid
However, such an evaporation removal method has the following problems: it depends on the boiling point of the fermentation inhibitor, especially the removal efficiency of fermentation inhibitors such as organic acids with low boiling points is low, and in order to obtain sufficient removal efficiency, a large amount of energy must be provided.
[0008] In addition, there is also a method of removing fermentation inhibitors by ion exchange (Patent Document 7), but there is a problem of cost
In addition, there is also a method of adsorption and removal using wood-based carbides, that is, activated carbon, etc., but there is a problem that the object of removal is limited to hydrophobic compounds (Patent Document 8)

Method used

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Examples

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Embodiment

[0144] Hereinafter, in order to demonstrate in more detail about the manufacturing method of the sugar liquid of this invention, an Example is given and demonstrated. However, the present invention is not limited to these Examples.

reference example 1

[0145] (Reference example 1) Analysis method of monosaccharide concentration

[0146] The monosaccharide concentration contained in the obtained aqueous sugar solution was quantified by comparison with a standard under the HPLC conditions shown below.

[0147] Column: Luna NH 2 (manufactured by Phenomenex Corporation)

[0148] Mobile phase: ultrapure water: acetonitrile = 25:75 (flow rate 0.6mL / min)

[0149] Reaction solution: no

[0150] Detection method: RI (differential refractive index)

[0151] Temperature: 30°C.

reference example 2

[0152] (Reference example 2) Analytical method of fermentation inhibitor concentration

[0153] The furan-based fermentation inhibitors (HMF, furfural) and phenolic fermentation inhibitors (vanillin, acetylvanillin, syringic acid, levulinic acid, 4-hydroxybenzoic acid) contained in the sugar solution were tested under the HPLC conditions shown below Quantification is performed by comparison with standards.

[0154] Column: Synergi HidroRP 4.6mm×250mm (manufactured by Phenomenex)

[0155] Mobile phase: Acetonitrile-0.1%H 3 PO 4 (flow rate 1.0mL / min)

[0156] Detection method: UV (283nm)

[0157] Temperature: 40°C.

[0158] The organic acid-based fermentation inhibitors (acetic acid, formic acid) contained in the sugar solution were quantified by comparison with standard samples under the HPLC conditions shown below.

[0159] Column: Shim-Pack SPR-H and Shim-Pack SCR101H (manufactured by Shimadzu Corporation) in series

[0160] Mobile phase: 5mM p-toluenesulfonic acid (fl...

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Abstract

Provided is a method for producing a sugar liquid using a cellulose-containing biomass as the starting material. Sugar liquid having a very low fermentation-inhibiting substance content is produced by a method comprising (1) a step in which a cellulose-containing biomass is hydrolyzed to produce an aqueous sugar solution and (2) a step in which the resulting aqueous sugar solution is filtered through a nanofiltration membrane and / or reverse osmosis membrane, the pure sugar liquid is recovered from the unpermeated side, and the fermentation-inhibiting matter is removed from the permeated side.

Description

technical field [0001] The present invention relates to a method for producing sugar liquor from cellulose-containing biomass. Background technique [0002] The chemical fermentation production process using sugar as raw material is used in the production of various industrial raw materials. As the sugar used as the fermentation raw material, sugar derived from edible raw materials such as sugar cane, starch, and sugar beet is currently used industrially, but from the ethical point of view such as the skyrocketing price of edible raw materials due to the increase in the world population in the future, or competition with food, it is possible to construct A process for efficiently producing sugar liquid from recycled non-edible resources, that is, cellulose-containing biomass, or a process for efficiently converting the obtained sugar liquid into an industrial raw material for fermentation will become a future issue. [0003] Among the methods for producing a sugar solution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13K1/02B01D71/08C12S3/04C13K13/00C12N1/21C12N15/00C12P13/00C12P19/14
CPCB01D61/025B01D61/027C12N1/38C12P7/10C12P7/46C12P7/56C12P13/001C12P19/02C12P19/14C12P2203/00C13B20/165C13K1/02C13K13/002C13K1/04C13K13/00Y02E50/10B01D61/026C08B1/003C12N1/00C12P13/00C12P19/00B01D61/029
Inventor 栗原宏征南野淳伊藤正照泽井秀树花川正行峰岸进一山田胜成
Owner TORAY IND INC
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