CN102676289A - Method for low temperature cold pressing of peanut oil - Google Patents
Method for low temperature cold pressing of peanut oil Download PDFInfo
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- CN102676289A CN102676289A CN2012101795524A CN201210179552A CN102676289A CN 102676289 A CN102676289 A CN 102676289A CN 2012101795524 A CN2012101795524 A CN 2012101795524A CN 201210179552 A CN201210179552 A CN 201210179552A CN 102676289 A CN102676289 A CN 102676289A
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Abstract
The invention belongs to the technical field of plant oil processing, and provides a high-oil-yield method for low temperature cold pressing of peanut oil to solve the problem of low oil yield in the cold pressing process of the peanut oil. A proper amount of peanut shell is added in the process of extruding the peanut shell to improve the extrusion degree of peanut kernels, so that the oil yield of the peanut kernels is improved. Compared with the common low temperature cold pressing technology, the method has the advantages that the oil yield of the peanut oil is improved by 5 to 8 percent; moreover, the water content of the peanut kernels is controlled in a range from 4 to 8 weight percent during baking, and a step of adding water for softening is eliminated; and the cold pressing process is simpler.
Description
Technical field
The present invention relates to a kind of method of low-temperature cold pressing peanut oil, belong to the plant oil processing technique field.
Background technology
Peanut oil is to be a kind of Vegetable oil lipoprotein that raw material is produced with the peanut, and it is nutritious, wherein contains abundant unsaturated fatty acids, vitamin E, trans-resveratrol, β-sitosterol etc.The extracting process of the present peanut oil of China has two types: hot moulding method and cold-press.
Peanut can cause loss of nutritional ingredients and peanut protein sex change such as linolenic acid in the peanut, linolic acid, vitamin E because of pressing temperature is too high in the hot moulding process.
Cold press is extracted vegetables oil and is used for maize, vegetable seed, soybean and Sunflower Receptacle etc. more abroad, and has obtained good effect.Compare with the hot moulding oil extracting methods, because peanut oil is able to squeeze out under lower temperature condition, therefore, phospholipids content is low, does not need refining, and energy consumption is low, can keep the nutritive ingredient and the bioactive ingredients of peanut more completely.The mode of squeezing of peanut oil is changed to cold press by hot moulding just gradually at present.But cold press is compared with the hot moulding method, and the oil yield of cold press mode is on the low side, is the problem of needing solution at present badly.
Extrusion pressing puffing apparatus can significantly improve the leaching performance of material, improves the grease leaching velocity, increases throughput, reduces production costs.Motor total power 90 kw, the speed of mainshaft 350 r/min, 100 ℃～110 ℃ of temperature outs.After material is sent into bulking machine through the speed control by frequency variation feeding machine; The Reducing screw blade that is rotated advance and with shear resistance material pin, expanded barrel and carry out violent friction, rub, push the back and produce certain pressure and heat energy; The sex change of protein appropriateness; Cell walls is fully destroyed, and grease is diffused into the material surface.Material after the extruding is extruded the nib of expanded tube, and unexpected decompression discharges the free water content in the material is evaporated suddenly, produces quick-fried swollen phenomenon.Documents CN150082A oil plant extruding puffing method and extrusion pressing puffing apparatus thereof disclose the method condition of oil plant extruding puffing; But this method condition be to all oil crops rather than to peanut, and the raising degree of the oil yield when the expanded material that produces under its disclosed method condition is carrying out cold press has only about 2-4%.
Summary of the invention
To the low problem of oil yield in the cold press peanut oil expression process, the invention provides the method for the high low-temperature cold pressing peanut oil of a kind of oil yield.
Technical scheme of the present invention:
A kind of method of low-temperature cold pressing peanut oil comprises following step:
A. selected Semen arachidis hypogaeae; Remove wherein jejune granule and flat grain, reach other impurity such as stone, iron;
B. the Semen arachidis hypogaeae after selected is cured, the moisture content that makes Semen arachidis hypogaeae is 4-8wt%;
C. the Semen arachidis hypogaeae cooling after will curing is also taken off scarlet;
D. the Semen arachidis hypogaeae that will slough scarlet carries out fragmentation and rolls embryo, and the particle diameter after the Semen arachidis hypogaeae fragmentation is the 1-3 millimeter;
E. will roll Semen arachidis hypogaeae and Pericarppium arachidis hypogaeae behind the embryo and add extruder together and carry out extruding puffing, and collect crude oil, the mass ratio of Pericarppium arachidis hypogaeae and Semen arachidis hypogaeae is 0.01-2:10;
F. the material behind the extruding puffing is sent into the oil press zhai squeezing and obtain crude oil; The oil press zhai temperature out is not higher than 60 ℃;
G. the crude oil among step e and the f is sent into filter and filter, obtain finished product peanut oil.
The method of above-mentioned a kind of low-temperature cold pressing peanut oil, preferred, the mass ratio of Pericarppium arachidis hypogaeae and Semen arachidis hypogaeae is 1-2:10.If the mass ratio of Pericarppium arachidis hypogaeae and Semen arachidis hypogaeae is less than 1:10, fibre content is less in the cake, causes the bed of material to be prone to be compacted, and oil plant can't well ooze out from cell walls, and residual oil content is high in the peanut meal, improves the DeGrain of oil yield.If the mass ratio of Pericarppium arachidis hypogaeae and Semen arachidis hypogaeae is higher than 2:10, the ratio that causes Semen arachidis hypogaeae to account for is too small, and squeezing efficient is reduced.
The method of above-mentioned a kind of low-temperature cold pressing peanut oil, preferred, the mass ratio of Pericarppium arachidis hypogaeae and Semen arachidis hypogaeae is 1.5-2:10; The water cut of Pericarppium arachidis hypogaeae is 4-8wt%; The particle diameter of Pericarppium arachidis hypogaeae is 5-10mm.Wherein the water cut of Pericarppium arachidis hypogaeae is consistent with the water cut of Semen arachidis hypogaeae; Neither can reduce the oil yield of Semen arachidis hypogaeae because water cut is too low, can be because of the expanded level of the too high reduction Semen arachidis hypogaeae of water cut yet.
The method of above-mentioned a kind of low-temperature cold pressing peanut oil, preferred, among the step e, carry out extruding puffing with the open flume type extruder; Extruding puffing pressure is 1.5-4.3 MPa; The extruding puffing temperature is 105-125 ℃, and the water cut of air is 4-8wt% in the extruder, and the speed of screw shaft of extruder is 60-170r/min; The extruding puffing time is 40-200 second, material particular diameter behind the extruding puffing≤5 millimeter.Wherein, the extruding puffing temperature is 105-125 ℃, and the lower swelling temperature before being different from is in order under the condition that does not influence the Semen arachidis hypogaeae nutritive ingredient, to improve expansion effect as far as possible; The preferred water cut with oven dry back Semen arachidis hypogaeae of the water cut of air is consistent in the extruder, makes Semen arachidis hypogaeae reach optimum expanded level; Finally reach the purpose that improves oil yield.The speed of screw shaft of extruder is 60-170r/min, far below the rotating speed of 180-300r/min in the existing cold press, is to make Semen arachidis hypogaeae expanded easily because added Pericarppium arachidis hypogaeae; Rotating speed reduces and has then reduced energy consumption, thereby has practiced thrift cost.Preferred, the extruding puffing temperature is 110-115 ℃.
The method of above-mentioned a kind of low-temperature cold pressing peanut oil, preferred, among the step b, adopt the mode roasted peanut benevolence of microwave radiation; Circulation uses AT to be 70-100 ℃ during microwave radiation.
The method of above-mentioned a kind of low-temperature cold pressing peanut oil, preferred, in the steps d, the thickness that Semen arachidis hypogaeae rolls embryo is the 0.2-1.3 millimeter; Among the step f, said oil press zhai is a screw oil expeller; In the step g, said filter is box plate basket filter.
Beneficial effect of the present invention:
Utilize the oil yield height of the more common cold-squeezing of oil yield of the inventive method; With respect to common low-temperature cold-squeezing, the oil yield of the peanut oil that the inventive method is produced has improved 5-8%.
In the process of Semen arachidis hypogaeae extruding puffing, adding Pericarppium arachidis hypogaeae is in order to improve the fibrousness of material, to strengthen the frictional force in extruding puffing and the follow-up expeller expressing process; After adding Pericarppium arachidis hypogaeae, can make the bed of material form certain skeleton, increase and press the embryo effect, shorten oil circuit, oil plant can ooze out from cell walls efficiently, improves extruding puffing and squeezing effect, and then improves the peanut oil yield.
During squeezing, do not add Pericarppium arachidis hypogaeae, because the fibre content in the peanut is few, cause the press for extracting juice thorax of oil press zhai to be gone into to press the material locking easily, squeezing is difficult to carry out; Fibre content causes the bed of material to be prone to be compacted after a little while in cake, and oil plant can't well ooze out from cell walls.
The water cut of oven dry back Semen arachidis hypogaeae is limited to 4-8wt%, and the water cut that is different from Semen arachidis hypogaeae in the common method for cold pressing is less than 4wt%; On the one hand the water cut of Semen arachidis hypogaeae improves and helps improving oil yield, has omitted on the other hand to add the water softening step, has simplified the cold press operation, has also overcome simultaneously to add the problem that the moisture inequality of peanut that water softening brings reduces oil yield.Therefore, method for cold pressing provided by the invention not only has the high advantage of oil yield, also possesses the technology characteristic of simple.
Embodiment
All to adopt the moisture content after selected be the Semen arachidis hypogaeae of 14wt% to raw material among following six embodiment.
Embodiment 1
With Semen arachidis hypogaeae 50 ℃ cure to water cut be 4wt%; Through being cooled to room temperature, taking off scarlet, fragmentation, rolling the embryo operation, wherein the broken particle diameter of Semen arachidis hypogaeae is 1-3mm successively, and rolling the flake thickness degree is 0.2-1.3mm;
Selecting water cut for use is the Pericarppium arachidis hypogaeae of 4-8wt%, and it is broken for particle diameter is 5-10mm;
To roll Semen arachidis hypogaeae and Pericarppium arachidis hypogaeae (Pericarppium arachidis hypogaeae is 5% with the mass ratio of Semen arachidis hypogaeae) behind the embryo then and send into fluting wall type extruder and carry out extruding puffing, and collect crude oil; Extruding puffing pressure is 1.5-4.3 MPa; The extruding puffing temperature is 105 ℃, and the water cut of air is 4wt% in the extruder, and the speed of screw shaft of extruder is 60-170r/min; The extruding puffing time is 40-200 second, material particular diameter behind the extruding puffing≤5 millimeter; With the material behind the extruding puffing, send into screw oil expeller and extract oil, obtain crude oil, the oil press zhai temperature out is not higher than 60 ℃;
The crude oil of gained after extruding puffing and the cold press is sent into box flame filter press, obtain finished product peanut oil at last.
Embodiment 2
With Semen arachidis hypogaeae 50 ℃ cure to water cut be 8wt%; Through being cooled to room temperature, taking off scarlet, fragmentation, rolling the embryo operation, wherein broken particle diameter is 1-3mm successively, and rolling the flake thickness degree is 0.2-1.3mm;
Selecting water cut for use is the Pericarppium arachidis hypogaeae of 4-8wt%, and it is broken for particle diameter is 5-10mm;
To roll Semen arachidis hypogaeae and Pericarppium arachidis hypogaeae (Pericarppium arachidis hypogaeae is 18% with the mass ratio of Semen arachidis hypogaeae) behind the embryo then and send into fluting wall type extruder and carry out extruding puffing, collect crude oil at the extruder discharge end; Extruding puffing pressure is 1.5-4.3 MPa; The extruding puffing temperature is 115 ℃, and the water cut of air is 8wt% in the extruder, and the speed of screw shaft of extruder is 60-170r/min; The extruding puffing time is 40-200 second, material particular diameter behind the extruding puffing≤5 millimeter;
With the material behind the extruding puffing, send into screw oil expeller and extract oil, obtain crude oil, the oil press zhai temperature out is not higher than 60 ℃;
The crude oil of gained after extruding puffing and the cold press is sent into box flame filter press, obtain finished product peanut oil at last.
Embodiment 3
With Semen arachidis hypogaeae 50 ℃ cure to water cut be 4wt%; Through being cooled to room temperature, taking off scarlet, fragmentation, rolling the embryo operation, wherein broken particle diameter is 1-3mm successively, and rolling the flake thickness degree is 0.2-1.3mm;
Selecting water cut for use is the Pericarppium arachidis hypogaeae of 4-8wt%, and it is broken for particle diameter is 5-10mm;
To roll Semen arachidis hypogaeae and Pericarppium arachidis hypogaeae (Pericarppium arachidis hypogaeae is 12% with the mass ratio of Semen arachidis hypogaeae) behind the embryo then and send into fluting wall type extruder and carry out extruding puffing, collect crude oil at the extruder discharge end; Extruding puffing pressure is 1.5-4.3 MPa; The extruding puffing temperature is 125 ℃, and the water cut of air is 4wt% in the extruder, and the speed of screw shaft of extruder is 60-170r/min; The extruding puffing time is 40-200 second, material particular diameter behind the extruding puffing≤5 millimeter;
With the material behind the extruding puffing, send into screw oil expeller and extract oil, obtain crude oil, the oil press zhai temperature out is not higher than 60 ℃;
The crude oil of gained after extruding puffing and the cold press is sent into box flame filter press, obtain finished product peanut oil at last.
Embodiment 4
With Semen arachidis hypogaeae 50 ℃ cure to water cut be 8wt%; Through being cooled to room temperature, taking off scarlet, fragmentation, rolling the embryo operation, wherein broken particle diameter is 1-3mm successively, and rolling the flake thickness degree is 0.2-1.3mm;
Selecting water cut for use is the Pericarppium arachidis hypogaeae of 4-8wt%, and it is broken for particle diameter is 5-10mm;
To roll Semen arachidis hypogaeae and Pericarppium arachidis hypogaeae (Pericarppium arachidis hypogaeae is 12% with the mass ratio of Semen arachidis hypogaeae) behind the embryo then and send into fluting wall type extruder and carry out extruding puffing, collect crude oil at the extruder discharge end; Extruding puffing pressure is 1.5-4.3 MPa; The extruding puffing temperature is 120 ℃, and the water cut of air is 8wt% in the extruder, and the speed of screw shaft of extruder is 60-170r/min; The extruding puffing time is 40-200 second, material particular diameter behind the extruding puffing≤5 millimeter; With the material behind the extruding puffing, send into screw oil expeller and extract oil, obtain crude oil, the oil press zhai temperature out is not higher than 60 ℃;
The crude oil of gained after extruding puffing and the cold press is sent into box flame filter press, obtain finished product peanut oil at last.
Embodiment 5
With Semen arachidis hypogaeae 50 ℃ cure to water cut be 4wt%; Through being cooled to room temperature, taking off scarlet, fragmentation, rolling the embryo operation, wherein broken particle diameter is 1-3mm successively, and rolling the flake thickness degree is 0.2-1.3mm;
To roll Semen arachidis hypogaeae behind the embryo then and send into fluting wall type extruder and carry out extruding puffing, collect crude oil at the extruder discharge end; Extruding puffing pressure is 1.5-4.3 MPa; The extruding puffing temperature is 125 ℃, and the water cut of air is 4wt% in the extruder, and the speed of screw shaft of extruder is 60-170r/min; The extruding puffing time is 40-200 second, material particular diameter behind the extruding puffing≤5 millimeter;
With the material behind the extruding puffing, send into screw oil expeller and extract oil, obtain crude oil, the oil press zhai temperature out is not higher than 60 ℃;
The crude oil of gained after extruding puffing and the cold press is sent into box flame filter press, obtain finished product peanut oil at last.
Embodiment 6
With Semen arachidis hypogaeae 50 ℃ cure to water cut be 4wt%; Through being cooled to room temperature, taking off scarlet, fragmentation, rolling the embryo operation, wherein broken particle diameter is 1-3mm successively, and rolling the flake thickness degree is 0.2-1.3mm;
Just roll Semen arachidis hypogaeae behind the embryo then and send into fluting wall type extruder and carry out extruding puffing, collect crude oil at the extruder discharge end; Extruding puffing pressure is 1.5-4.3 MPa; The extruding puffing temperature is 70 ℃, and the water cut of air is 4wt% in the extruder, and the speed of screw shaft of extruder is 60-170r/min; The extruding puffing time is 40-200 second, material particular diameter behind the extruding puffing≤5 millimeter;
With the material behind the extruding puffing, send into screw oil expeller and extract oil, obtain crude oil, the oil press zhai temperature out is not higher than 60 ℃;
The crude oil of gained after extruding puffing and the cold press is sent into box flame filter press, obtain finished product peanut oil at last.
| ? | Cure back Semen arachidis hypogaeae water cut | The extruding puffing temperature | The mass ratio of Pericarppium arachidis hypogaeae and Semen arachidis hypogaeae | Oil yield | VE content | Unsaturated fatty acid content |
| Embodiment 1 | 4wt% | 105℃ | 5% | 25.9% | 71.2mg/100g | 39.4% |
| Embodiment 2 | 8wt% | 115 ℃ in microwave | 18% | 26.9% | 70.8mg/100g | 39.2% |
| Embodiment 3 | 4wt% | 125℃ | 12% | 26.5% | 70.3mg/100g | 39.0% |
| Embodiment 4 | 8wt% | 120℃ | 12% | 27.7% | 70.5mg/100g | 39.1% |
| Embodiment 5 | 4wt% | 115℃ | 0 | 20.3% | 70.8mg/100g | 39.2% |
| Embodiment 6 | 4wt% | 70℃ | 0 | 19.7% | 72.3mg/100g | 41.0% |
Claims (7)
1. the method for a low-temperature cold pressing peanut oil is characterized in that, comprises following step:
A. selected Semen arachidis hypogaeae;
B. the Semen arachidis hypogaeae after selected is cured, the moisture content that makes Semen arachidis hypogaeae is 4-8wt%;
C. the Semen arachidis hypogaeae cooling after will curing is also taken off scarlet;
D. the Semen arachidis hypogaeae that will slough scarlet carries out fragmentation and rolls embryo, and the particle diameter after the Semen arachidis hypogaeae fragmentation is the 1-3 millimeter;
E. will roll Semen arachidis hypogaeae and Pericarppium arachidis hypogaeae behind the embryo and add extruder together and carry out extruding puffing, collect crude oil; Wherein the mass ratio of Pericarppium arachidis hypogaeae and Semen arachidis hypogaeae is 0.01-2:10;
F. the material behind the extruding puffing is sent into the oil press zhai squeezing and obtain crude oil; The oil press zhai temperature out is not higher than 60 ℃;
G. the crude oil among step e and the f is sent into filter and filter, obtain finished product peanut oil.
2. the method for low-temperature cold pressing peanut oil according to claim 1 is characterized in that,
The mass ratio of Pericarppium arachidis hypogaeae and Semen arachidis hypogaeae is 1-2:10.
3. the method for low-temperature cold pressing peanut oil according to claim 1 is characterized in that, the mass ratio of Pericarppium arachidis hypogaeae and Semen arachidis hypogaeae is 1.5-2:10; The water cut of Pericarppium arachidis hypogaeae is 4-8wt%; The particle diameter of Pericarppium arachidis hypogaeae is 5-10mm.
4. according to the method for claim 1,2 or 3 described low-temperature cold pressing peanut oil, it is characterized in that, among the step e, use the open flume type extruder to carry out extruding puffing; Extruding puffing pressure is 1.5-4.3 MPa; The extruding puffing temperature is 105-125 ℃, and the water cut of air is 4-8wt% in the extruder, and the speed of screw shaft of extruder is 60-170r/min; The extruding puffing time is 40-200 second, material particular diameter behind the extruding puffing≤5 millimeter.
5. the method for low-temperature cold pressing peanut oil according to claim 4 is characterized in that, the extruding puffing temperature is 110-115 ℃.
6. the method for low-temperature cold pressing peanut oil according to claim 1 is characterized in that, among the step b, adopts the mode roasted peanut benevolence of microwave radiation; Circulation uses AT to be 70-100 ℃ during microwave radiation.
7. the method for low-temperature cold pressing peanut oil according to claim 1 is characterized in that,
In the steps d, the thickness that Semen arachidis hypogaeae rolls embryo is the 0.2-1.3 millimeter;
Among the step f, said oil press zhai is a screw oil expeller;
In the step g, said filter is box plate basket filter.
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| CN103931787A (en) * | 2014-03-21 | 2014-07-23 | 安徽省怀远县鑫泰粮油有限公司 | Anti-aging antioxidant peanut oil and its preparation method |
| CN104130854A (en) * | 2014-07-14 | 2014-11-05 | 新疆天鹰生物科技有限公司 | Cold oil pressing method |
| CN104232293A (en) * | 2014-09-28 | 2014-12-24 | 蒋艳玲 | Peanut oil production process |
| CN105580918A (en) * | 2016-01-20 | 2016-05-18 | 和县绿源油脂有限公司 | Green and healthy peanut blend oil and processing technology thereof |
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| CN104130854A (en) * | 2014-07-14 | 2014-11-05 | 新疆天鹰生物科技有限公司 | Cold oil pressing method |
| CN104232293A (en) * | 2014-09-28 | 2014-12-24 | 蒋艳玲 | Peanut oil production process |
| CN105580918A (en) * | 2016-01-20 | 2016-05-18 | 和县绿源油脂有限公司 | Green and healthy peanut blend oil and processing technology thereof |
| CN106520365A (en) * | 2017-01-08 | 2017-03-22 | 山东乐悠悠花生油科技有限公司 | Processing process for strong-flavor peanut oil with low aflatoxin content |
| CN108504444A (en) * | 2018-04-02 | 2018-09-07 | 陕西杨凌陕特农业发展有限公司 | The processing technology of one vegetable oil |
| CN108998207A (en) * | 2018-08-07 | 2018-12-14 | 河南正花食品集团有限公司 | A kind of oil expression method preventing peanut oxidative rancidity |
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Application publication date: 20120919 |