CN103053796A - Continuous leaching and degreasing method for distillers dried grains with soluble (DDGS) - Google Patents
Continuous leaching and degreasing method for distillers dried grains with soluble (DDGS) Download PDFInfo
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- CN103053796A CN103053796A CN2013100218100A CN201310021810A CN103053796A CN 103053796 A CN103053796 A CN 103053796A CN 2013100218100 A CN2013100218100 A CN 2013100218100A CN 201310021810 A CN201310021810 A CN 201310021810A CN 103053796 A CN103053796 A CN 103053796A
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- China
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- ddgs
- leaching
- maize alcohol
- alcohol stillage
- fat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/87—Re-use of by-products of food processing for fodder production
Abstract
The invention discloses a continuous leaching and degreasing method for distillers dried grains with soluble (DDGS), and the method comprises the following steps of: continuously putting the distillers dried grains with soluble (DDGS) of which the fat content is 5%-18% into a vertical type spiral leaching machine, utilizing normal hexane for backflow leaching and degreasing, then performing desolvation drying treatment on wet meal to obtain a low-fat DDGS product. The operation condition is as follows: material to liquid ratio (w/w) is 1:0.6-1, the leaching temperature is within 40-60 DEG C, the leaching time is 30-60 minutes, the fat content of the low-fat DDGS product is 0.5%-2%, and protein content is 25%-30%. The method overcomes the shortcomings that the traditional leaching method has low extraction efficiency and is easy to cause 'bridging', increases the protein content, nutritive value and additional value of the degreased product, reduces water activity, is hard to cause mildew, prolongs the shelf life, can avoid side effects of the distillers dried grains with soluble (DDGS) during feeding, and ensures the grease and pigment to be reasonably utilized as well.
Description
Technical field
The present invention relates to the method for a kind of maize alcohol stillage (DDGS) degreasing, refer in particular to a kind of maize alcohol stillage (DDGS) and leach continuously the method for degreasing.
Background technology
The output of maize alcohol stillage (DDGS) constantly increases along with the increase of corn deep processing quantity in recent years, but maize alcohol stillage (DDGS) is used some limiting factors are arranged: 1. contain 5%～18% grease in the maize alcohol stillage (DDGS), wherein unsaturated fatty acid content is high, easily oxidation affects maize alcohol stillage (DDGS) quality; 2. carotenoid pigment content is higher in the maize alcohol stillage (DDGS), and generally at 200～250mg/kg, fodder maize vinasse (DDGS) can make the yellowish pink jaundice of some livestock and poultry when addition is large, occur " yellow fat meat "; 3. maize alcohol stillage (DDGS) water activity is higher, easily grows mould.
Maize alcohol stillage (DDGS) fines content is higher, leaches degreasing if carry out continous way, and there are problems such as " bridge formations " in existing conventional rotocel extractor and ring-like infuser, easily results in blockage and stops production.If adopt intermittence or pot group type to leach degreasing, then extraction efficiency is not high, can't satisfy large-scale industrial production.
Summary of the invention
The objective of the invention is to invent a kind of maize alcohol stillage (DDGS) and leach continuously degreasing method.It is that maize alcohol stillage (DDGS) is inputted vertical type spiral infuser continuously, leaches degreasing with organic solvent, and then the wet dregs of rice carry out the dry processing of precipitation, obtain the low fat maize alcohol stillage.
Leaching continuously degreasing method is implemented by the following technical programs: maize alcohol stillage (DDGS) and the n-hexane of fat content 5%～18% are joined in the vertical type spiral infuser by solid-liquid ratio (w/w) 1: 0.6～1,40～60 ℃ of extraction temperatures, extraction time 30～60min, then the wet dregs of rice carry out the dry processing of precipitation, obtain the low fat maize alcohol stillage product of fat content 0.5%～2.0%, protein content 25%～30%.
Advantage of the present invention: with n-hexane in vertical type spiral infuser with the oil extraction in the maize alcohol stillage (DDGS) out, overcome the not high and easy shortcoming that forms " bridge formation " of traditional degreasing method extraction efficiency, protein content, nutritive value and added value improve in the maize alcohol stillage after the degreasing (DDGS), water activity reduces, be difficult for going mouldy, prolonged shelf life, the side effect that can avoid maize alcohol stillage (DDGS) in raising, to occur, and grease and pigment also can rationally be utilized.
The specific embodiment
Embodiment 1
Fatty 12.2% maize alcohol stillage (DDGS) is by feeder input vertical type spiral infuser, organic solvent-normal hexane is pressed into vertical type spiral infuser from bottom to top by chuck bucket diffusion mechanism, both press solid-liquid ratio (w/w) adverse current mixing in 1: 0.6 under the effect of vertical auger, 55 ℃ of extraction temperatures, extraction time 45min.The wet dregs of rice carry out that precipitation is dry to be processed, and gained low fat maize alcohol stillage product fat content is 1.3%, and protein content brings up to 28.2% by 24.7%, and water activity (24.5 ℃) drops to 0.49 by initial 0.60.
Embodiment 2
Fatty 8.6% maize alcohol stillage (DDGS) is by feeder input vertical type spiral infuser, organic solvent-normal hexane is pressed into vertical type spiral infuser from bottom to top by chuck bucket diffusion mechanism, both press solid-liquid ratio (w/w) adverse current mixing in 1: 1 under the effect of vertical auger, 50 ℃ of extraction temperatures, extraction time 60min.The wet dregs of rice carry out that precipitation is dry to be processed, and gained low fat maize alcohol stillage product fat content is 0.8%, and protein content brings up to 28.9% by 25.8%, and water activity (24.5 ℃) drops to 0.47 by initial 0.61.
Claims (5)
1. a maize alcohol stillage (DDGS) leaches degreasing method continuously, it is characterized in that the key step that leaches is: (1) is with in maize alcohol stillage (DDGS) the input vertical type spiral infuser, with organic solvent counterflow leaching fat; (2) gained corn wine waste matter is taken off dry the processing through steaming, and reclaims solvent, makes low fat maize alcohol stillage product.
2. maize alcohol stillage according to claim 1 (DDGS) leaches degreasing method continuously, it is characterized in that leaching used organic solvent continuously is n-hexane.
3. maize alcohol stillage according to claim 1 (DDGS) leaches degreasing method continuously, it is characterized in that the fat content for the maize alcohol stillage (DDGS) that leaches is 5%～18%.
4. maize alcohol stillage according to claim 1 (DDGS) leaches degreasing method continuously, the continuous leaching degreasing condition that it is characterized in that maize alcohol stillage (DDGS) is: solid-liquid ratio (w/w) is 1: 0.6～1,40～60 ℃ of extraction temperatures, extraction time 30～60min.
5. maize alcohol stillage according to claim 1 (DDGS) leaches degreasing method continuously, and the fat content that it is characterized in that described low fat maize alcohol stillage product is 0.5%～2%, and protein content is 25%～30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100218100A CN103053796A (en) | 2013-01-22 | 2013-01-22 | Continuous leaching and degreasing method for distillers dried grains with soluble (DDGS) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100218100A CN103053796A (en) | 2013-01-22 | 2013-01-22 | Continuous leaching and degreasing method for distillers dried grains with soluble (DDGS) |
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| Publication Number | Publication Date |
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| CN103053796A true CN103053796A (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013100218100A Pending CN103053796A (en) | 2013-01-22 | 2013-01-22 | Continuous leaching and degreasing method for distillers dried grains with soluble (DDGS) |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102848A (en) * | 1986-03-20 | 1988-01-13 | 吉约·贝尔纳 | Method and apparatus with ultrasonic wave extract oil from oilseeds |
| CN2271532Y (en) * | 1996-09-28 | 1997-12-31 | 宋志强 | Vertical leaching apparatus |
| CN101851268A (en) * | 2010-04-30 | 2010-10-06 | 祁鲲 | Process for directly preparing soybean concentrated protein by wet soybean meal |
| CN102793055A (en) * | 2011-12-22 | 2012-11-28 | 江南大学 | Method for degreasing and decoloring distillers dried grains with soluble (DDGS) |
-
2013
- 2013-01-22 CN CN2013100218100A patent/CN103053796A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102848A (en) * | 1986-03-20 | 1988-01-13 | 吉约·贝尔纳 | Method and apparatus with ultrasonic wave extract oil from oilseeds |
| CN2271532Y (en) * | 1996-09-28 | 1997-12-31 | 宋志强 | Vertical leaching apparatus |
| CN101851268A (en) * | 2010-04-30 | 2010-10-06 | 祁鲲 | Process for directly preparing soybean concentrated protein by wet soybean meal |
| CN102793055A (en) * | 2011-12-22 | 2012-11-28 | 江南大学 | Method for degreasing and decoloring distillers dried grains with soluble (DDGS) |
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Application publication date: 20130424 |