CN1258993C - Method for preparing food fibre using fermentation liquor of biomass preparing ethanol system - Google Patents
Method for preparing food fibre using fermentation liquor of biomass preparing ethanol system Download PDFInfo
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- CN1258993C CN1258993C CNB2003101088083A CN200310108808A CN1258993C CN 1258993 C CN1258993 C CN 1258993C CN B2003101088083 A CNB2003101088083 A CN B2003101088083A CN 200310108808 A CN200310108808 A CN 200310108808A CN 1258993 C CN1258993 C CN 1258993C
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Abstract
The present invention provides a method for preparing dietary fiber from waste fermentation liquid in an alcohol production system by using biological material. The present invention is characterized in that a circulation solvent generated by a technologic system, namely alcohol, is used; wood dust is hydrolyzed and fermented to recover hemicellulose hydrolysate contained in the waste liquid after the alcohol is prepared, and the hemicellulose hydrolysate is made into the dietary fiber; obtained products mainly comprise oligomer pentose, and the oligomer pentose contains Ca and Fe, can reduce hyperlipemia and cholesteryl and improve gstrointestinal tract functions and has natural perfume. The present invention has the advantage of simple application, accords with standards of food sanitation, shortens the treating procedures of the waste fermentation liquid and reduces the total technologic cost for preparing the alcohol from the biological material.
Description
Technical field
The present invention relates to a kind of preparation method of dietary fiber, be specifically related in wood chip hydrolysis, the fermentation system ethanol system, is the method for feedstock production dietary fiber with the fermented waste fluid.
Background technology
According to statistics, the cellulose as regenerative resource can have 4.5 * 10 every year
10T, but the utilization of abandoned biomass less than 50% so far.Dietary fiber is a kind of multi-functional nutrient and healthcare products, and the same with calcium also is the nutrient of the daily additional deficiency of people.Need regulation according to relevant nutrient, every day, the intake of dietary fiber should be 20-25g, and generally can only satisfy the 50%-80% of this amount, therefore paid attention to sense of food, and the research invention of producing dietary fibre in the exploitation different material is just in the ascendant.
The Guangxi patent gazette had been reported " utilizing bagasse to produce the method for dietary fibre " in 2002, it is earlier with bagasse precomminution, put then to closed container, add NaOH and water, stir and boiled 1-4 hour, clean filter and do back adding hydrogen peroxide, stabilizing agent and hot water, bleached 2-5 hour, and cleaned, dehydration, oven dry, pulverize and obtain product, the advantage of this method is that production cost is lower, and can utilize the equipment that has the paper mill now, operation is many relatively.
According to calendar year 2001 Tianjin patent gazette: " a kind of production technology of hypoglycemic edible fibres ", mainly cereal kind skin is processed into the meals fine powder with acid-base method.This invention communique is pointed out: its major function of the antihypelipidemic foodstuff of production is a blank of having filled up diabetic product.
The invention in recent years of bioengineering institute of Wuhan University has related to " being the method that raw material is produced soluble dietary fiber with the fresh Amorphophallus rivieri ".Fresh Amorphophallus rivieri is cleaned the peeling chopping, place sulfurous acid solution soaks, smash to pieces, divide the abandonment waste liquid, dry sieve smart powder, place mixed liquor to remove mixed liquor in smart powder with wet grinding, adding the chelating agent mixed liquor again handles, through ethanol dehydration, low temperature drying, crushing screening get product.This invention product can be removed the harm to human body such as heavy metal to greatest extent, but from preparation section, cost is higher.
The patent of University of Minnesota (US 5585366) is pointed out: water-soluble dietary fiber can reduce cholesterol, can be with product as bread additive; Extracting water-soluble dietary fiber from vegetables, also be the basic concept of American Crystal Sugar Company patent (US55137744) as the health food of effective adjusting human body nutrient balance, and the raw material of these two pieces of patents is edible cellulose.
The biomass castoff of lignocellulose-containing is a kind of raw material sources of producing alcohol fuel.Main matter is the byproduct (acetate, furfural etc.) that hydrolysis workshop section produces in this technique waste water, a small amount of unfermentable sugar that fermentation workshop section produces, and distillation workshop section does not reclaim completely organic compounds such as ethanol.
The main component of cellulose castoff system alcohol fermentation slops and content (reference)
| Form | Content W% |
| The water dry, (yeast etc.) solubility dry reduced sugar hemicellulose hydrolysate, (pentose) CaO FeCL 2 | 95.5 4.5 2.0 0.3 1.2～.1.7 0.2～0.5 ignores |
Summary of the invention
The present invention utilizes the fermented waste fluid in the system of biomass castoff system ethanol, is that raw material is produced edible cellulose with the hemicellulose hydrolysate that remains in the fermented waste fluid.
The technical conceive of invention:
The hemicellulose hydrolysate that remains in the waste liquid by wood chip hydrolysis, fermentation system ethanol belongs to the category of pentosan, often exists with low poly-pentose forms such as D-wood sugar, L-arabinoses.The active group that exists in its structure, especially a fairly large number of hydroxyl can be constructed in the stronger molecule and intermolecular hydrogen bond, forms big molecule.Behind the circulating solvent that the adding system produces, the pentosan class can be with fibrous separating out (dietary fiber), and impurity is remained in the solution.
According to above-mentioned design, the inventor has proposed to realize the technical scheme of the object of the invention by a large amount of tests, and this scheme comprises the steps:
After being steamed by wood chip hydrolysis, the Diluted Alcohol produced of fermentation, fermented waste fluid is concentrated in right amount, and adding an amount of concentration is the circulating solvent of 30-60%, at room temperature, separates out time 0.5-2hr, makes dietary fiber.
Described dietary fiber, the mass percent of main component is: pentose content is 80-85%, calcium constituent 3-6%, ferro element 0.5-1.0%.
Described circulating solvent, the circulating solvent rate of recovery is greater than 95%.Described circulating solvent is an ethanol.
The most outstanding advantage of the present invention is: it is simple that dietary fiber is produced operation, and product quality height, used circulating solvent be from system itself, etching apparatus not, non-secondary pollution.And, help the advanced treating of waste water because the extraction of by-product dietary fiber in the fermented waste fluid makes chemical oxygen consumption (COC) organic in the waste liquid reduce 56-60%, also reduced the cost of abandoned biomass system total ethanol technology.
The dietary fiber of being produced can reduce high fat of blood and cholesterol, improves gastrointestinal function, can be used as food additives and paramedicines.
The specific embodiment
Content of the present invention is further elaborated by following embodiment, but does not limit the scope of the invention.
Embodiment 1.
After waste wood hydrolysis, the Diluted Alcohol produced of fermentation steamed, fermented waste fluid was concentrated into 1 times.Get this fermented waste fluid 100ml, in the port grinding bottle of 500ml, according to the fermented waste fluid phenolic hydroxyl group amount 0.322mmol/ml and the carboxyl-content 0.028mmol/ml that record, 30% the circulating solvent amount put into is 100ml, or 60% circulating solvent amount 50ml.
20 ℃ of temperature, separate out time 1hr, under the controlled condition of pH=7, remove foreign protein, the about 1-2% of the product yield that obtains after the drying (the circulating solvent rate of recovery is 95%).
Embodiment 2.
Waste wood 180g, watery hydrochloric acid with 1% and 1% frerrous chloride be catalyzing hydrolysis at high temperature, and the concentration that records reduced sugar is 35.96mg/l; After fermentation, steaming Diluted Alcohol (2%), fermented waste fluid is concentrated into 2 times of stoste, according to fermented waste fluid phenolic hydroxyl group amount 0.47mmol/ml and carboxyl-content 0.063mmol/ml, 50% the circulating solvent amount put into is 50ml.
In room temperature, separate out time 2hr, under the condition of pH=6.5, remove foreign protein, about 2% (the circulating solvent rate of recovery is 98%) of the product yield that obtains after the drying.
Claims (3)
1. fermented waste fluid is produced the method for dietary fiber in the biomass-making ethanol system, it is characterized in that the fermented waste fluid in the biomass-making ethanol system is concentrated, and adding concentration is the circulating solvent of 30-60%, at room temperature, separate out time 0.5-2hr, promptly make dietary fiber
Wherein: described circulating solvent is an ethanol.
2. the method for claim 1 is characterized in that described dietary fiber, and the mass percent of main component is: pentose content is 80-85%, calcium constituent 3-6%, ferro element 0.5-1.0%.
3. the method for claim 1, the rate of recovery that it is characterized in that described circulating solvent is greater than 95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101088083A CN1258993C (en) | 2003-11-24 | 2003-11-24 | Method for preparing food fibre using fermentation liquor of biomass preparing ethanol system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101088083A CN1258993C (en) | 2003-11-24 | 2003-11-24 | Method for preparing food fibre using fermentation liquor of biomass preparing ethanol system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1543858A CN1543858A (en) | 2004-11-10 |
| CN1258993C true CN1258993C (en) | 2006-06-14 |
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| CNB2003101088083A Expired - Fee Related CN1258993C (en) | 2003-11-24 | 2003-11-24 | Method for preparing food fibre using fermentation liquor of biomass preparing ethanol system |
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| CN (1) | CN1258993C (en) |
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2003
- 2003-11-24 CN CNB2003101088083A patent/CN1258993C/en not_active Expired - Fee Related
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| CN1543858A (en) | 2004-11-10 |
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Granted publication date: 20060614 Termination date: 20101124 |