Method for extracting xylose by strong-flavor solid white wine vinasse

A solid-state liquor, strong-flavor technology, which is applied in the field of industrial waste resource utilization, can solve the problems such as the extraction of xylose that has not yet been retrieved, achieves good promotion and application prospects, realizes waste utilization, and has the effects of high purity

Active Publication Date: 2013-05-08
SHANDONG FOOD & FERMENT IND RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Method for extracting xylose by strong-flavor solid white wine vinasse
  • Method for extracting xylose by strong-flavor solid white wine vinasse

Examples

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Effect test

Embodiment 1

[0035] 1) Pretreatment of distiller's grains

[0036] Take 1000g of fresh distiller's grains, dry or dry them to get 389g of distiller's grains as a dry basis, sieve to remove impurities such as sand and soil, add water and boil for 1 hour, and the mass ratio of solid to liquid is 1:10. After boiling, filter, take the filter residue, dry and set aside.

[0037] 2) Acid hydrolysis of distiller's grains

[0038] Take the dried distiller's grains, add 2% dilute sulfuric acid, the mass ratio of solid to liquid is 1:10, and acidify at 120 ° C for 2 hours. After acidolysis, filter, wash the filter residue with distilled water, and collect it together with the filtrate for later use. Obtain 2700ml acid hydrolyzed solution, measure its solid content to be 3%.

[0039] 3) Impurity removal and purification of acid hydrolysis solution

[0040] Add CaCO to the hydrolyzate in a water bath at 80°C 3 , keep stirring, neutralize to pH2.5-3.0, continue stirring, keep warm for 1h, filter, ...

Embodiment 2

[0044] 1) Pretreatment of distiller's grains

[0045] Take 1000g of fresh distiller's grains and dry them to obtain 395g of distiller's grains on a dry basis. After sieving to remove impurities such as sand and soil, add water and boil for 1 hour. The mass ratio of solid to liquid is 1:10. After boiling, filter, take the filter residue, dry and set aside.

[0046] 2) Acid hydrolysis of distiller's grains

[0047] Take the dried distiller's grains, add 2% dilute sulfuric acid, the mass ratio of solid to liquid is 1:10, and acidify at 120 ° C for 2 hours. After acidolysis, filter, wash the filter residue with distilled water, and collect it together with the filtrate for later use. Obtain 2750ml acid hydrolyzate, measure its solid content as 3.1%.

[0048] 3) Impurity removal and purification of acid hydrolysis solution

[0049] Add CaCO to the hydrolyzate in a water bath at 80°C 3 , keep stirring, neutralize to pH3.0-3.5, continue stirring, keep warm for 1h, filter, wash, ...

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Abstract

The invention relates to a method for extracting xylose by strong-flavor solid white wine vinasse. The method comprises the steps of pretreatment of vinasse, hydrolyzation of vinasse, trash purification of hydrolysate, concentration of acid hydrolysis solution, and xylose crystallization. The method is characterized by comprising the steps of controlling the temperature at 120 DEG C after removing part of the impurities by pretreatment of the vinasse; extracting the xylose by 2% of dilute sulphuric acid; neutralizing extracting solution by CaCO3, decoloring active carbon, removing impurities of the acid hydrolysis solution via 732# cation exchange resin and D301 anion exchange resin orderly; removing impurities by yeast fermentation, and finally concentrating and crystallizing to obtain the xylose crystal. Waste vinasse in the white alcohol industry is taken as a material to extract the xylose; the extraction rate of the xylose is high and achieves over 8% (relatively to dry basis of the vinasse); the utilization value of the vinasse is improved; and the method has a great significance on the development of comprehensive utilization of the vinasse and other cellulose wastes in our country, and has good popularization and application prospects.

Description

technical field [0001] The invention relates to a method for extracting xylose by using Luzhou-flavor solid liquor distiller's grains, and belongs to the technical field of resource utilization of industrial waste. Background technique [0002] Xylose is a five-carbon sugar with the molecular formula C 5 h 10 o 5 . In nature, except for bamboo shoots, xylose has not been found in a free state, but widely exists in the hemicellulose of plants in nature in a polycondensed state, that is, contained in plants in the form of macromolecular pentosan xylan in vivo. As functional sugars, xylose and arabinose have high added value and wide application. It is contained more in the discarded parts of agricultural products such as corncobs, cottonseed hulls, bagasse, rice husks, and other straws and seed hulls. Xylose is mainly produced by hydrolyzing agricultural waste with inorganic acid. From a theoretical point of view, as long as plants containing hemicellulose can be used a...

Claims

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Application Information

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IPC IPC(8): C13K13/00C07H3/02C07H1/08
Inventor 徐慧刘建军李文婧李福佳
Owner SHANDONG FOOD & FERMENT IND RES & DESIGN INST
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