CN102450384A - Method for extracting soybean protein from soybean oil residues - Google Patents
Method for extracting soybean protein from soybean oil residues Download PDFInfo
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- CN102450384A CN102450384A CN2010105157148A CN201010515714A CN102450384A CN 102450384 A CN102450384 A CN 102450384A CN 2010105157148 A CN2010105157148 A CN 2010105157148A CN 201010515714 A CN201010515714 A CN 201010515714A CN 102450384 A CN102450384 A CN 102450384A
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Abstract
The present invention discloses a method for extracting soybean protein from soybean oil residues. The method comprises: (1) removing impurities, crushing and screening; (2) carrying out extracting to remove the oil, and drying; (3) carrying out alkaline extraction; (4) carrying out secondary alkaline extraction; (5) carrying out bleaching; (6) acidifying the precipitation; (7) separating, washing and neutralizing; (8) atomizing and drying to obtain the finished product. The method of the present invention has the following advantages that: the production cost is reduced, the added value of the product is improved, the production process is simple, the operation is easy to control, the method is applicable for the large-scale industrial production, and good economic benefits and good social benefits are provided.
Description
Technical field:
The present invention relates to a kind of extraction process of soybean protein, particularly a kind of method of from the soybean dregs of fat, extracting soybean protein.
These article be when the soybean dregs of fat extract soybean polyoses extraction filtrating further processing make, thereby improve the comprehensive utilization benefit of the soybean dregs of fat.
Background technology:
Soybean is a kind of important industrial crops, and China is that soybean attendes one of major country of production in the world, produces the soybean amount above 20,000,000 tons.Contain in the soybean protein about 39%, grease about 18%, polysaccharide (comprise about cellulose and hemicellulose＞31%, moisture about 11%.Adopt traditional milling process or solvent extraction to extract soybean oil residue (being called for short the soybean dregs of fat) afterwards and contain amounts of protein and polysaccharide, directly as feed, use value is lower usually.Soybean protein has emulsibility, foaming characteristic and oil absorption, not only can be used as edible and forage protein, also can be used as the additive of food industry.In the prior art, it is the feedstock production soybean protein that the method for distilling of soybean protein adopts from dregs of beans, bean dregs mostly.Like application number is that 200910144467.2 one Chinese patent application discloses the method for from bean dregs, extracting soybean dietary fiber and soybean protein.The report of the soybean protein that from the soybean dregs of fat, extracts seldom.
Summary of the invention:
For solving the deficiency of prior art, the invention provides a kind of preparation method of soybean protein, this method is a raw material with the soybean dregs of fat, the extraction filtrating when extracting soybean polyoses further processing makes soybean protein, thereby improves the comprehensive utilization benefit of the soybean dregs of fat.
The present invention is achieved in that a kind of method from soybean dregs of fat extraction soybean protein, and its preparation method is:
(1) impurity elimination, pulverizes, sieves.Will except that the soybean oil ground-slag of impurity such as clip, burnt grain, sand broken after, collected the particulate of 30 mesh sieves.
(2) extraction deoil, drying.With step (1) impurity elimination, the n-hexane of pulverize, sieve back the soybean dregs of fat and 12 times adds and carries out in the extractor extracting in 1～1.5 hour, removes residual solvent, will extract the gained soybean dregs of fat 70～80 ℃ of dryings 0.5～1 hour down.
(3) basic extraction.With step (2) extraction deoil, the dried soybean dregs of fat add 6～7 times of waters and mix, fully stir, the weak solution of hydro-oxidation sodium, stirring and transferring pH value is 9～10, is heated to 50 ℃ with water-bath, is constantly stirring extraction down 0.5～1 hour.
(4) secondary basic extraction.Extract is carried out filtration under diminished pressure, and filtrating keeps, and filter residue is the method secondary basic extraction of (3) more set by step.
(5) bleaching.Second extract is carried out filtration under diminished pressure, and filter residue is used in addition; Merge extracted twice gained filtrating, add a small amount of saturated limewater and bleach.
(6) acid precipitation.In bleaching liquid, adding hydrochloric acid adjusting pH value is about 4.3, and about 60 ℃ of solution holding temperatures make protein precipitation.
(7) separate, wash, neutralize.Separate clear liquid with whizzer, collect protein curd, behind clean water washing secondary, the sodium hydroxide solution that adds a small amount of 20% concentration neutralizes, and the curdled milk pH value is reached about 7.
(8) atomizing, drying.In spray drying tower hot blast inlet temperature is that 160～240 ℃, outlet temperature are under 75～85 ℃ the condition, above-mentioned curdled milk is delivered in the atomizer through milling treatment of colloid earlier again atomize behind preheating heat.In the parallel type drier, carry out spray-drying.At the bottom of dry Tata, can collect the white powdery soybean protein powder that contains protein 70%～90%.
Described a kind of method from soybean dregs of fat extraction soybean protein, its preparation method is:
(1) impurity elimination, pulverizes, sieves.Will except that the soybean oil ground-slag of impurity such as clip, burnt grain, sand broken after, collected the particulate of 30 mesh sieves.
(2) extraction deoil, drying.With step (1) impurity elimination, the n-hexane of pulverize, sieve 10 kilograms of the back soybean dregs of fat and 110 kilograms adds and carries out in the extractor extracting in 1.5 hours, removes residual solvent, will extract the gained soybean dregs of fat 705 ℃ of dryings 1 hour down.
(3) basic extraction.With step (2) extraction deoil, the dried soybean dregs of fat add 40 kilograms of waters and mix, and fully stir, and add the weak solution of 12% NaOH, stirring and transferring pH value is 9～10, is heated to 50 ℃ with water-bath, is constantly stirring extraction down 1 hour.
(4) secondary basic extraction.Extract is carried out filtration under diminished pressure, and filtrating keeps, and filter residue is the method secondary basic extraction of (3) more set by step.
(4) secondary basic extraction.Extract is carried out filtration under diminished pressure, and filtrating keeps, and filter residue is the method secondary basic extraction of (3) more set by step.
(5) bleaching.Second extract is carried out filtration under diminished pressure, and filter residue is used in addition; Merge extracted twice gained filtrating, add a small amount of saturated limewater and bleach.
(6) acid precipitation.In bleaching liquid, adding hydrochloric acid adjusting pH value is about 4.3, and about 60 ℃ of solution holding temperatures make protein precipitation.
(7) separate, wash, neutralize.Separate clear liquid with whizzer, collect protein curd, behind clean water washing secondary, the sodium hydroxide solution that adds a small amount of 20% concentration neutralizes, and the curdled milk pH value is reached about 7.
(8) atomizing, drying.In spray drying tower hot blast inlet temperature is that 160～240 ℃, outlet temperature are under 75～85 ℃ the condition, above-mentioned curdled milk is delivered in the atomizer through milling treatment of colloid earlier again atomize behind preheating heat.In the parallel type drier, carry out spray-drying.At the bottom of dry Tata, can collect the white powdery soybean protein powder that contains protein 70%～90%.
A kind of advantage of extracting the method for soybean protein from the soybean dregs of fat of the present invention is: reduce production costs, improve added value of product, production technology simple, control easily, be convenient to large-scale industrial production, economic benefit and social benefit are good.
The specific embodiment:
Below in conjunction with embodiment, the present invention is made further detailed description, but does not constitute any restriction of the present invention:
A kind of method of the present invention from soybean dregs of fat extraction soybean protein, its preparation method is:
(1) impurity elimination, pulverizes, sieves.Will except that the soybean oil ground-slag of impurity such as clip, burnt grain, sand broken after, collected the particulate of 30 mesh sieves.
(2) extraction deoil, drying.With step (1) impurity elimination, the n-hexane of pulverize, sieve 10 kilograms of the back soybean dregs of fat and 110 kilograms adds and carries out in the extractor extracting in 1.5 hours, removes residual solvent, will extract the gained soybean dregs of fat 705 ℃ of dryings 1 hour down.
(3) basic extraction.With step (2) extraction deoil, the dried soybean dregs of fat add 40 kilograms of waters and mix, and fully stir, and add the weak solution of 12% NaOH, stirring and transferring pH value is 9～10, is heated to 50 ℃ with water-bath, is constantly stirring extraction down 1 hour.
(4) secondary basic extraction.Extract is carried out filtration under diminished pressure, and filtrating keeps, and filter residue is the method secondary basic extraction of (3) more set by step.
(4) secondary basic extraction.Extract is carried out filtration under diminished pressure, and filtrating keeps, and filter residue is the method secondary basic extraction of (3) more set by step.
(5) bleaching.Second extract is carried out filtration under diminished pressure, and filter residue is used in addition; Merge extracted twice gained filtrating, add a small amount of saturated limewater and bleach.
(6) acid precipitation.In bleaching liquid, adding hydrochloric acid adjusting pH value is about 4.3, and about 60 ℃ of solution holding temperatures make protein precipitation.
(7) separate, wash, neutralize.Separate clear liquid with whizzer, collect protein curd, behind clean water washing secondary, the sodium hydroxide solution that adds a small amount of 20% concentration neutralizes, and the curdled milk pH value is reached about 7.
(8) atomizing, drying.In spray drying tower hot blast inlet temperature is that 160～240 ℃, outlet temperature are under 75～85 ℃ the condition, above-mentioned curdled milk is delivered in the atomizer through milling treatment of colloid earlier again atomize behind preheating heat.In the parallel type drier, carry out spray-drying.At the bottom of dry Tata, can collect the white powdery soybean protein powder that contains protein 70%～90%.
A kind of advantage of extracting the method for soybean protein from the soybean dregs of fat of the present invention is: reduce production costs, improve added value of product, production technology simple, control easily, be convenient to large-scale industrial production, economic benefit and social benefit are good.
Claims (2)
1. one kind is extracted the method for soybean protein from the soybean dregs of fat, and it is characterized in that: its preparation method is:
(1) impurity elimination, pulverizes, sieves.Will except that the soybean oil ground-slag of impurity such as clip, burnt grain, sand broken after, collected the particulate of 30 mesh sieves.
(2) extraction deoil, drying.With step (1) impurity elimination, the n-hexane of pulverize, sieve back the soybean dregs of fat and 12 times adds and carries out in the extractor extracting in 1～1.5 hour, removes residual solvent, will extract the gained soybean dregs of fat 70～80 ℃ of dryings 0.5～1 hour down.
(3) basic extraction.With step (2) extraction deoil, the dried soybean dregs of fat add 6～7 times of waters and mix, fully stir, the weak solution of hydro-oxidation sodium, stirring and transferring pH value is 9～10, is heated to 50 ℃ with water-bath, is constantly stirring extraction down 0.5～1 hour.
(4) secondary basic extraction.Extract is carried out filtration under diminished pressure, and filtrating keeps, and filter residue is the method secondary basic extraction of (3) more set by step.
(5) bleaching.Second extract is carried out filtration under diminished pressure, and filter residue is used in addition; Merge extracted twice gained filtrating, add a small amount of saturated limewater and bleach.
(6) acid precipitation.In bleaching liquid, adding hydrochloric acid adjusting pH value is about 4.3, and about 60 ℃ of solution holding temperatures make protein precipitation.
(7) separate, wash, neutralize.Separate clear liquid with whizzer, collect protein curd, behind clean water washing secondary, the sodium hydroxide solution that adds a small amount of 20% concentration neutralizes, and the curdled milk pH value is reached about 7.
(8) atomizing, drying.In spray drying tower hot blast inlet temperature is that 160～240 ℃, outlet temperature are under 75～85 ℃ the condition, above-mentioned curdled milk is delivered in the atomizer through milling treatment of colloid earlier again atomize behind preheating heat.In the parallel type drier, carry out spray-drying.At the bottom of dry Tata, can collect the white powdery soybean protein powder that contains protein 70%～90%.
2. according to a kind of method from soybean dregs of fat extraction soybean protein according to claim 1, it is characterized in that: its preparation method is:
(1) impurity elimination, pulverizes, sieves.Will except that the soybean oil ground-slag of impurity such as clip, burnt grain, sand broken after, collected the particulate of 30 mesh sieves.
(2) extraction deoil, drying.With step (1) impurity elimination, the n-hexane of pulverize, sieve 10 kilograms of the back soybean dregs of fat and 110 kilograms adds and carries out in the extractor extracting in 1.5 hours, removes residual solvent, will extract the gained soybean dregs of fat 705 ℃ of dryings 1 hour down.
(3) basic extraction.With step (2) extraction deoil, the dried soybean dregs of fat add 40 kilograms of waters and mix, and fully stir, and add the weak solution of 12% NaOH, stirring and transferring pH value is 9～10, is heated to 50 ℃ with water-bath, is constantly stirring extraction down 1 hour.
(4) secondary basic extraction.Extract is carried out filtration under diminished pressure, and filtrating keeps, and filter residue is the method secondary basic extraction of (3) more set by step.
(4) secondary basic extraction.Extract is carried out filtration under diminished pressure, and filtrating keeps, and filter residue is the method secondary basic extraction of (3) more set by step.
(5) bleaching.Second extract is carried out filtration under diminished pressure, and filter residue is used in addition; Merge extracted twice gained filtrating, add a small amount of saturated limewater and bleach.
(6) acid precipitation.In bleaching liquid, adding hydrochloric acid adjusting pH value is about 4.3, and about 60 ℃ of solution holding temperatures make protein precipitation.
(7) separate, wash, neutralize.Separate clear liquid with whizzer, collect protein curd, behind clean water washing secondary, the sodium hydroxide solution that adds a small amount of 20% concentration neutralizes, and the curdled milk pH value is reached about 7.
(8) atomizing, drying.In spray drying tower hot blast inlet temperature is that 160～240 ℃, outlet temperature are under 75～85 ℃ the condition, above-mentioned curdled milk is delivered in the atomizer through milling treatment of colloid earlier again atomize behind preheating heat.In the parallel type drier, carry out spray-drying.At the bottom of dry Tata, can collect the white powdery soybean protein powder that contains protein 70%～90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105157148A CN102450384A (en) | 2010-10-14 | 2010-10-14 | Method for extracting soybean protein from soybean oil residues |
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| CN2010105157148A CN102450384A (en) | 2010-10-14 | 2010-10-14 | Method for extracting soybean protein from soybean oil residues |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103211082A (en) * | 2013-04-12 | 2013-07-24 | 华南理工大学 | Soybean protein and preparation method thereof |
| CN103783255A (en) * | 2014-01-27 | 2014-05-14 | 长沙理工大学 | Method for extracting protein from byproduct of oil extraction of snakegourd fruit seeds |
| CN108719903A (en) * | 2018-05-11 | 2018-11-02 | 中玺（天津）枣业技术工程中心 | Jujube jelly and processing method |
| CN111060468A (en) * | 2020-01-19 | 2020-04-24 | 日照健安检测技术服务有限公司 | Method for rapidly detecting protein content in chitin |
| CN111685222A (en) * | 2020-06-16 | 2020-09-22 | 安徽省连丰种业有限责任公司 | Method for extracting soybean protein |
-
2010
- 2010-10-14 CN CN2010105157148A patent/CN102450384A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103211082A (en) * | 2013-04-12 | 2013-07-24 | 华南理工大学 | Soybean protein and preparation method thereof |
| CN103783255A (en) * | 2014-01-27 | 2014-05-14 | 长沙理工大学 | Method for extracting protein from byproduct of oil extraction of snakegourd fruit seeds |
| CN103783255B (en) * | 2014-01-27 | 2015-07-15 | 长沙理工大学 | Method for extracting protein from byproduct of oil extraction of snakegourd fruit seeds |
| CN108719903A (en) * | 2018-05-11 | 2018-11-02 | 中玺（天津）枣业技术工程中心 | Jujube jelly and processing method |
| CN111060468A (en) * | 2020-01-19 | 2020-04-24 | 日照健安检测技术服务有限公司 | Method for rapidly detecting protein content in chitin |
| CN111060468B (en) * | 2020-01-19 | 2022-08-26 | 日照健安检测技术服务有限公司 | Method for rapidly detecting protein content in chitin sample |
| CN111685222A (en) * | 2020-06-16 | 2020-09-22 | 安徽省连丰种业有限责任公司 | Method for extracting soybean protein |
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Application publication date: 20120516 |