CN1923855A - Method of extracting hemicellulose from plant fiber - Google Patents
Method of extracting hemicellulose from plant fiber Download PDFInfo
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- CN1923855A CN1923855A CN 200610069003 CN200610069003A CN1923855A CN 1923855 A CN1923855 A CN 1923855A CN 200610069003 CN200610069003 CN 200610069003 CN 200610069003 A CN200610069003 A CN 200610069003A CN 1923855 A CN1923855 A CN 1923855A
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- vegetable fibre
- hemicellulose
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Abstract
The invention discloses a hemicellulose extracting method from plant fiber, which comprises the following steps: blending plant fiber, alkaline and water in the autoclave with stirring device and heating system; heating the autoclave to 35-85 deg.c; stirring for 10s-10min under the rotary speed at 300-2000rpm; filtering or centrifuging according to normal method; obtaining hemicellulose extract of filtrate or supernatant; adding 80-95% alcohol in the hemicellulose extract; sedimenting soluble hemicellulose; filtering; collecting; drying; obtaining the hemicellulose.
Description
Technical field
The present invention relates to a kind of extracting method of hemicellulose, relate in particular to a kind of method of under low moisture content, particularly extracting hemicellulose the zein fiber, belong to the corn deep processing field from vegetable fibre.
Background technology
Corn deep processing is to be raw material with the corn, adopts Technologies such as physics, chemical process and fermentation engineering corn to be carried out the processing of the degree of depth.In the corn deep processing process, have a large amount of byproducts and produce, be exactly the byproduct of W-Gum processing as zein fiber, claim maize peel again, be the crust of corn grain, account for about 10% of corn gross weight.China's W-Gum industry year processing corn is 1,000 ten thousand tons at present, and maize peel estimates just there are nearly more than 100 ten thousand tons.According to surveying and determination, starch-containing in the maize peel, hemicellulose, Mierocrystalline cellulose, protein, fat, the ash material that grades, wherein hemicellulose accounts for 20～40%, also contains the trace element of a little in addition.
Hemicellulose is food and industrial having a wide range of applications, grade as one-tenth as tackiness agent, therefore, the extraction of hemicellulose, especially the byproduct that particularly the corn deep processing process, produces from vegetable fibre---extract hemicellulose in the zein fiber, the corn deep processing field there is positive meaning, will helps to promote value-added content of product and economic benefit of enterprises.
The extraction of hemicellulose at present is mainly water extraction method, and this method requires reactant concn extent of dilution height, is typically solids content about 10%, liquid about 90%, therefore causes the mass consumption of water in industrial production, has increased extraction cost; Simultaneously, because hemicellulose has the viscosity of very big solubleness and its aqueous solution quite big, also cause very big difficulty in the aqueous solution to from its aqueous solution, extracting hemicellulose.
Summary of the invention:
At the deficiencies in the prior art, the problem to be solved in the present invention provides the method that a kind of alkalescence is extracted hemicellulose, promptly under low moisture content, particularly extract the method for hemicellulose the zein fiber from vegetable fibre, the reactant concn height that this method concentration of reactants requires than water extraction method, do not require in the extraction and use a large amount of water, obviously reduced extraction cost.
The method of from vegetable fibre, extracting hemicellulose of the present invention, its step is as follows:
1) vegetable fibre, alkali, water are put into the reactor that has whipping appts and heating system after mixing, wherein the add-on of alkali is 10%～40% of vegetable fibre dry weight by weight percentage, and the amount of water by weight percentage, be 10%～60% of vegetable fibre dry weight, pH value 11～12;
2) heating rises to 35 ℃～85 ℃ with temperature of reaction kettle, opens whipping appts simultaneously, makes the described mixture of step 1) under the speed conditions of 300rpm～2000rpm, stirs 10s～10min;
3) with step 2) described mixture is with ordinary method filtration or centrifugal, and filtrate that obtains or supernatant liquor are the extracting solution of hemicellulose;
4) 80%～95% of its 2～3 times of volumes of adding ethanol in the extracting solution of hemicellulose makes solubility hemicellulose precipitation, and conventional filtration is collected product and dry, gets hemicellulose.
Above-mentioned extracts from vegetable fibre in the method for hemicellulose: the described vegetable fibre of step 1) is one of corn, wheat, buckwheat, soybean, rice class, avenaceous fiber or its mixture.
Wherein: the described vegetable fibre of step 1) is zein fiber preferably.
Above-mentioned extracts in the method for hemicellulose from vegetable fibre: the preferably alkali-metal oxyhydroxide of the described alkali of step 1), its add-on is preferably 10%～30% of vegetable fibre dry weight by weight percentage.
Wherein: described alkali-metal oxyhydroxide is one of sodium hydroxide, potassium hydroxide, calcium hydroxide preferably, its add-on by weight percentage, the suitableeest is 10%～25% of vegetable fibre dry weight.
Above-mentioned extracts in the method for hemicellulose from vegetable fibre: the amount of the described water of step 1) is preferably 15%～50% of vegetable fibre dry weight by weight percentage.
Wherein: the amount of the described water of step 1) most preferably is 20%～40% of vegetable fibre dry weight by weight percentage.
In the above-mentioned method of extracting hemicellulose from vegetable fibre: step 2) described temperature of reaction kettle is preferably 45 ℃～70 ℃.
In the above-mentioned method of extracting hemicellulose from vegetable fibre: step 2) described mixing speed is preferably 800rpm～1500rpm, and churning time is preferably 2min～8min.
In addition, step 2) in the described whipping process, stirs and the extraction of hemicellulose, utilize the enzyme, acid or the oxygenant that add routine can reduce viscosity, color and the pH of mixture for can more effectively controlling.
Utilize method usefulness of the present invention to be:
1. alkalescence of the present invention is extracted the use that has significantly reduced water, has reduced the cost of investment of water, has reduced the consumption and the waste of water resources simultaneously.
2. it is lower to obtain the extracting solution viscosity after method alkalescence of the present invention is extracted, and is beneficial to the further extraction of hemicellulose.
3. with vegetable fibre particularly zein fiber be that raw material extracts hemicellulose, overcome problems such as the added value of product that causes for the raw material production animal-feed with the zein fiber is low.
Embodiment
Embodiment 1
1) zein fiber, 18% sodium hydroxide, water are put into the reactor that has whipping appts and heating system after mixing, wherein the add-on of 18% sodium hydroxide by weight percentage, be 20% of zein fiber dry weight, the amount of water by weight percentage, be 30% of zein fiber dry weight, pH value 11.5;
2) heating rises to 70 ℃ ± 2 ℃ with temperature of reaction kettle, opens whipping appts simultaneously, makes the described mixture of step 1) under the speed conditions of 1000rpm, stirs 5min;
3) with step 2) described mixture is with ordinary method filtration or centrifugal, and filtrate that obtains or supernatant liquor are the extracting solution of hemicellulose;
4) 90% of its 2.5 times of volumes of adding ethanol in the extracting solution of hemicellulose makes solubility hemicellulose precipitation, and conventional filtration is collected product and dry, gets hemicellulose.
Embodiment 2
1) soybean fibers, 20% potassium hydroxide, water are put into the reactor that has whipping appts and heating system after mixing, wherein the add-on of 20% potassium hydroxide by weight percentage, be 40% of soybean fibers dry weight, the amount of water by weight percentage, be 60% of soybean fibers dry weight, pH value 12;
2) heating rises to 80 ℃ ± 2 ℃ with temperature of reaction kettle, opens whipping appts simultaneously, makes the described mixture of step 1) under the speed conditions of 2000rpm, stirs 10min;
3) with step 2) described mixture is with ordinary method filtration or centrifugal, and filtrate that obtains or supernatant liquor are the extracting solution of hemicellulose;
4) 95% of its 2 times of volumes of adding ethanol in the extracting solution of hemicellulose makes solubility hemicellulose precipitation, and conventional filtration is collected product and dry, gets hemicellulose.
Embodiment 3
1) wheat fiber (wheat bran), 20% calcium hydroxide, water are put into the reactor that has whipping appts and heating system after mixing, wherein the add-on of 20% calcium hydroxide by weight percentage, be 10% of wheat fiber dry weight, the amount of water by weight percentage, be 15% of wheat fiber dry weight, pH value 11;
2) heating rises to 35 ℃～45 ℃ with temperature of reaction kettle, opens whipping appts simultaneously, makes the described mixture of step 1) under the speed conditions of 300rpm, stirs 20s;
3) with step 2) described mixture is with ordinary method filtration or centrifugal, and filtrate that obtains or supernatant liquor are the extracting solution of hemicellulose;
4) 80% of its 3 times of volumes of adding ethanol in the extracting solution of hemicellulose makes solubility hemicellulose precipitation, and conventional filtration is collected product and dry, gets hemicellulose.
Claims (10)
1. a method of extracting hemicellulose from vegetable fibre the steps include:
1) vegetable fibre, alkali, water are put into the reactor that has whipping appts and heating system after mixing, wherein the add-on of alkali is 10%～40% of vegetable fibre dry weight by weight percentage, and the amount of water by weight percentage, be 10%～60% of vegetable fibre dry weight, pH value 11～12;
2) heating rises to 35 ℃～85 ℃ with temperature of reaction kettle, opens whipping appts simultaneously, makes the described mixture of step 1) under the speed conditions of 300rpm～2000rpm, stirs 10s～10min;
3) with step 2) described mixture is with ordinary method filtration or centrifugal, and filtrate that obtains or supernatant liquor are the extracting solution of hemicellulose;
4) 80%～95% of its 2～3 times of volumes of adding ethanol in the extracting solution of hemicellulose makes solubility hemicellulose precipitation, and conventional filtration is collected product and dry, gets hemicellulose.
2. the method for extracting hemicellulose from vegetable fibre as claimed in claim 1 is characterized in that: the described vegetable fibre of step 1) is one of corn, wheat, buckwheat, soybean, rice class, avenaceous fiber or its mixture.
3. the method for extracting hemicellulose from vegetable fibre as claimed in claim 2, it is characterized in that: the described vegetable fibre of step 1) is a zein fiber.
4. the method for from vegetable fibre, extracting hemicellulose as claimed in claim 1, it is characterized in that: the described alkali of step 1) is meant alkali-metal oxyhydroxide, its add-on is 10%～30% of vegetable fibre dry weight by weight percentage.
5. the method for from vegetable fibre, extracting hemicellulose as claimed in claim 4, it is characterized in that: described alkali-metal oxyhydroxide is meant one of sodium hydroxide, potassium hydroxide, calcium hydroxide, its add-on is 10%～25% of vegetable fibre dry weight by weight percentage.
6. the method for extracting hemicellulose from vegetable fibre as claimed in claim 1, it is characterized in that: the amount of the described water of step 1) is 15%～50% of vegetable fibre dry weight by weight percentage.
7. the method for extracting hemicellulose from vegetable fibre as claimed in claim 6, it is characterized in that: the amount of the described water of step 1) is 20%～40% of vegetable fibre dry weight by weight percentage.
8. the method for extracting hemicellulose from vegetable fibre as claimed in claim 1 is characterized in that: step 2) described temperature of reaction kettle is 45 ℃～70 ℃.
9. the method for extracting hemicellulose from vegetable fibre as claimed in claim 1 is characterized in that: step 2) described mixing speed is 800rpm～1500rpm, churning time is 2min～8min.
10. the method for extracting hemicellulose from vegetable fibre as claimed in claim 1 is characterized in that: step 2) in the described whipping process, can reduce viscosity, color and the pH of mixture with enzyme, acid or the oxygenant of routine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610069003 CN1923855A (en) | 2006-09-20 | 2006-09-20 | Method of extracting hemicellulose from plant fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610069003 CN1923855A (en) | 2006-09-20 | 2006-09-20 | Method of extracting hemicellulose from plant fiber |
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| CN1923855A true CN1923855A (en) | 2007-03-07 |
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| CN 200610069003 Pending CN1923855A (en) | 2006-09-20 | 2006-09-20 | Method of extracting hemicellulose from plant fiber |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619550B (en) * | 2009-07-17 | 2011-01-05 | 天津科技大学 | Treatment method of high-yield pulping waste liquid for enhancing pulp strength |
| CN101628948B (en) * | 2009-07-31 | 2011-11-09 | 上海师范大学 | Straw stalk hemicellulose B preparation method |
| CN102276760A (en) * | 2011-08-10 | 2011-12-14 | 华南理工大学 | Method for separating and purifying hemicelluloses from agriculture and forest biomasses by gradient ethanol precipitation |
| CN102746422A (en) * | 2012-06-21 | 2012-10-24 | 海南大学 | Method for extracting hemicellulose from coconut shells and coconut shell fibers |
| CN103333274A (en) * | 2013-07-11 | 2013-10-02 | 宜宾丝丽雅集团有限公司 | Method for extracting and recovering hemicellulose from squeezed waste alkali |
| CN103539870A (en) * | 2013-10-28 | 2014-01-29 | 宜宾海丝特纤维有限责任公司 | Method for extracting hemicellulose from plant fiber |
| CN104313929A (en) * | 2014-08-29 | 2015-01-28 | 南开大学 | Method for separating holocellulose in bagasse by utilizing combined precipitating agent |
| WO2019119741A1 (en) * | 2017-12-20 | 2019-06-27 | 南京林业大学 | Method for separating methanol-mediated hemicellulose alkaline solution and method for separating ethanol-mediated hemicellulose alkaline solution |
| CN110963589A (en) * | 2018-09-28 | 2020-04-07 | 宝山钢铁股份有限公司 | Device and method for removing toluene and 1, 2-dichloroethane in biochemical effluent of cold-rolled thick oil |
| CN110981993A (en) * | 2019-11-21 | 2020-04-10 | 昆明理工大学 | Integrated treatment equipment and method for extracting and separating hemicellulose from grass raw materials |
| CN112504908A (en) * | 2020-12-26 | 2021-03-16 | 四川普锐特药业有限公司 | Method for detecting content of microcrystalline cellulose in mometasone furoate nasal spray |
| CN115058911A (en) * | 2022-03-23 | 2022-09-16 | 呼和浩特民族学院 | Method for extracting cellulose from cellulose and buckwheat straws |
-
2006
- 2006-09-20 CN CN 200610069003 patent/CN1923855A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619550B (en) * | 2009-07-17 | 2011-01-05 | 天津科技大学 | Treatment method of high-yield pulping waste liquid for enhancing pulp strength |
| CN101628948B (en) * | 2009-07-31 | 2011-11-09 | 上海师范大学 | Straw stalk hemicellulose B preparation method |
| CN102276760A (en) * | 2011-08-10 | 2011-12-14 | 华南理工大学 | Method for separating and purifying hemicelluloses from agriculture and forest biomasses by gradient ethanol precipitation |
| CN102746422A (en) * | 2012-06-21 | 2012-10-24 | 海南大学 | Method for extracting hemicellulose from coconut shells and coconut shell fibers |
| CN103333274B (en) * | 2013-07-11 | 2015-10-28 | 宜宾丝丽雅集团有限公司 | Method for extracting and recovering hemicellulose from squeezed waste alkali |
| CN103333274A (en) * | 2013-07-11 | 2013-10-02 | 宜宾丝丽雅集团有限公司 | Method for extracting and recovering hemicellulose from squeezed waste alkali |
| CN103539870A (en) * | 2013-10-28 | 2014-01-29 | 宜宾海丝特纤维有限责任公司 | Method for extracting hemicellulose from plant fiber |
| CN104313929A (en) * | 2014-08-29 | 2015-01-28 | 南开大学 | Method for separating holocellulose in bagasse by utilizing combined precipitating agent |
| WO2019119741A1 (en) * | 2017-12-20 | 2019-06-27 | 南京林业大学 | Method for separating methanol-mediated hemicellulose alkaline solution and method for separating ethanol-mediated hemicellulose alkaline solution |
| CN110963589A (en) * | 2018-09-28 | 2020-04-07 | 宝山钢铁股份有限公司 | Device and method for removing toluene and 1, 2-dichloroethane in biochemical effluent of cold-rolled thick oil |
| CN110963589B (en) * | 2018-09-28 | 2022-10-21 | 宝山钢铁股份有限公司 | Device and method for removing toluene and 1, 2-dichloroethane in biochemical effluent of cold-rolled thick oil |
| CN110981993A (en) * | 2019-11-21 | 2020-04-10 | 昆明理工大学 | Integrated treatment equipment and method for extracting and separating hemicellulose from grass raw materials |
| CN112504908A (en) * | 2020-12-26 | 2021-03-16 | 四川普锐特药业有限公司 | Method for detecting content of microcrystalline cellulose in mometasone furoate nasal spray |
| CN115058911A (en) * | 2022-03-23 | 2022-09-16 | 呼和浩特民族学院 | Method for extracting cellulose from cellulose and buckwheat straws |
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