CN101121910A - Method for extracting wheat germ oil by compression solvent - Google Patents
Method for extracting wheat germ oil by compression solvent Download PDFInfo
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- CN101121910A CN101121910A CNA2007101309440A CN200710130944A CN101121910A CN 101121910 A CN101121910 A CN 101121910A CN A2007101309440 A CNA2007101309440 A CN A2007101309440A CN 200710130944 A CN200710130944 A CN 200710130944A CN 101121910 A CN101121910 A CN 101121910A
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Abstract
The invention discloses a method for preparing wheatgerm oil by pressurized solvent extraction. The process includes the following steps: (1) fresh wheatgerms are separated from a plansifter, and directly sent into a microwave drying machine through a chute, and dried and enzyme-deactivated under low temperature; (2) under 0.2-0.8MPa, a plurality of counter current leachings are conducted on the wheatsgerms undergone microwave processing at Step (1) by using liquefied butane, ethanol or isopropyl-alcohol or other solvents, and then precipitation of the solvents contained in the oil mixtures and wet embryo dregs is conducted under reduced pressure; (3) the solvents vaporized from the oil mixtures and wet embryo dregs are vaporized, and the vaporized solvent gas is then compressed and condensed in a compressor for recycled use; (4) the crude wheatgerm oil adopts conventional winterization, caustic-refining and decolorizing techniques. The invention is capable to reduce solvent consumption, reduce the extraction duration and restrain lipidic oxidation and denaturation of embryo-dreg protein. Besides, the method can be applied to massive industrial production.
Description
Technical field
The present invention relates to field of deep processing of farm products, relate in particular to a kind of method of extracting wheat germ oil by compression solvent.
Background technology
Wheatgerm accounts for 2～3% of wheat grain weight, is the by product of wheat flour milling industry.Wheat germ contains 8～12% quality plant grease, comprising the unsaturated fatty acids of the needed by human such as linolic acid more than 60%; V in the wheat germ
EContent is 256～500ppm, is the natural V of occurring in nature
EThe food that content is the highest, and its physiologically active is synthetic V
ENearly 30 times, wheat germ also contains 30% the high-quality protein of having an appointment, comprising the acid of eight kinds of needed by human nitrogen bases, so wheat germ has very high edibleness and health-care effect.
Producing of wheat germ oil mainly contains three kinds of modes at present, and the first is directly squeezed, and this method oil yield is lower, only be about 5%, and oil quality is poor; It two is with the chemical extraction of normal hexane as solvent, though the solvent extraction oil yield can reach 8～12%, yet the pyroprocessing in mixing oil and wet embryo dregs of rice precipitation process can cause unsaturated fatty acids and V in the grease
EOxidation and the dregs of rice in proteic partially denaturing; It three is supercritical COs
2Extraction adopt this method extraction wheatgerm can directly obtain high-quality wheat germ oil and wheat germ protein, but because its treatment capacity is little, the high investment of equipment makes that the wheat germ oil product cost is higher, thereby the suitability for industrialized production of this technology is restricted.
The extraction of wheatgerm oil is one of main path of wheat germ utilization, yet wheatgerm is the strongest part of physiologically active in the wheat grain, moisture and lipid content height, when wheatgerm with after wheat grain separates, under the effect of high vigor fat hydrolase and lipoxidase, its fatty acid value is raise significantly; The microbial reproduction growth is fast, and it is rotten to cause that wheat germ becomes sour, and causes wheat germ the iso-metamorphism phenomenon to occur luming, going mouldy, ferment.Therefore, have only by stabilization treatment, wheatgerm just can be transported safely and store, thereby wheat germ deep processing and comprehensive utilization are become a reality.Simultaneously, because unsaturated fatty acids and V such as its linolic acid
EContent Deng biologically active substance is higher, and these materials are easy to oxidation and degraded in the middle of extraction of the edible oil of routine and refining process.Above-mentioned factor has all seriously restricted greasy industrialized developing of wheat germ and utilization.
At present, solve the wheat germ rotten stabilization method that becomes sour and be mainly thermal treatment, comprise xeothermic and wet heat treatment.Heat treated passivation lipase activity is a report the earliest, also is a kind of method that generally adopts at present.Yet dry heat treatment is bad to the passivation effect of enzyme, and wet-heating easily causes wheat germ moisture content height, is unfavorable for the greasy leaching of wheat germ.In a word, wheatgerm stabilization treatment effect directly affects grease yield, quality and refinery practice.
Number of patent application is 200510036855.0, publication number is CN1757705, the patent documentation disclosed method that name is called " with the method for microwave and solvent extraction wheatgerm oil " is earlier that wheatgerm and solvent is mixed, again with the mixed liquid of microwave treatment, its objective is selectivity and lower temperature and the extraction time of lacking in order to utilize microwave action, avoided the stripping of other impurity in the wheatgerm, to obtain comparatively purified oil product, but do not solve the spoilage problems of becoming sour of wheat germ, and this method can't use in the large-scale industrial production.
Summary of the invention
Easily cause unsaturated fatty acids and V in the wheat germ oil in order to overcome go out enzyme untimely and thorough, not conventional edible oil extraction and method of refining of wheatgerm in the prior art
EOxidation and degraded and supercritical CO
2Extraction equipment drops into high and defective such as output is little, the invention provides a kind of method of extracting wheat germ oil by compression solvent, and wheat-germ online microwave deactivating enzyme is combined, industrially produces high-quality wheatgerm oil with the pressurized liquid extraction technology.
The technical solution used in the present invention is: in turn include the following steps: (1) online microwave deactivating enzyme: the microwave drying device is installed in the whole meal flour job shop, and match with the machining production line of milling plant, from the isolated fresh wheat germ of square plansifter, carry by elephant trunk, directly enter microwave drier, carry out the cryodrying and the enzyme that goes out; (2) pressurized liquid extraction: under the pressure of 0.2～0.8MPa, select liquefied butane, ethanol or Virahol equal solvent for use, step (1) is carried out the leaching of several adverse current through the wheatgerm of microwave treatment, again solvent precipitation under the state of decompression to containing in the mixing oil and the wet embryo dregs of rice; (3) solvent recuperation: the solvent that from mixing oil and in the wet embryo dregs of rice, evaporates, through the decompression vaporization, the solvent gas after the gasification is again through recycling behind compressor compresses, the condensation liquefaction; (4) crude oil refining: the wheat germ crude oil adopts conventional winterization, alkali refining and decoloration process.
Compared with prior art, the technology that adopts wheat-germ online microwave deactivating enzyme and pressurized liquid extraction to combine prepares wheatgerm oil, has following advantage: the 1. V of microwave deactivating enzyme in can the all-round protection wheat germ oil
ENutrition with the functional performance of the physiologically active of unsaturated fatty acids and wheat germ protein.2. the wheat germ water content is reduced to about 4%, and through the effect of microwave non-thermal effect, helps the leaching of wheat germ oil.3. pressurized liquid extraction can not only significantly reduce solvent-oil ratio, shorten the extraction time greatly, and product yield and lipid acid forms unaffectedly, and total unsaturated fatty acids and content of polyunsaturated fatty acid are respectively greater than 80% and 60%, and Residual oil is below 1.0% in the dregs of rice.4. the oily process of whole system is to carry out under low-temperature condition or comparatively high temps was finished in the short period of time, but thereby the sex change of the oxidation of oil-control and embryo cake protein.5. adopt the online zymotechnic that goes out, make wheatgerm raw material acid value and peroxide value be in lower level all the time, thereby can simplify the refinery practice of wheatgerm crude oil, and effectively control the V in the alkali refining process
ELoss.6. the present invention matches with the production line of existing flour mill, can be applicable to large-scale industrial production.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is a process flow sheet of the present invention.
Embodiment
As shown in Figure 1, the microwave drying device is installed in the whole meal flour job shop, and match with the machining production line of milling plant, isolated fresh wheat germ from the existing square plansifter equipment of job shop, carry by the existing elephant trunk equipment of job shop, directly enter microwave drier, and carry out the cryodrying and the enzyme that goes out at once, realize the online enzyme that goes out of wheatgerm.Wheat germ after microwave treatment carries out vacuum packaging, and is standby.According to water content and the flow of wheatgerm, set the microwaves corresponding heating power.The general microwave heating power of selecting 1～4kw, best microwave heating power is 2～2.5kw.Reach the controlled microwave purpose of action time by regulating drum rotational speed, microwave heating time is controlled at 30s～6min, and Best Times is 3～5min.Overlong time can cause protein denaturation, and the time weak point goes out, and enzyme is not thorough, product moisture content height.Adopt infrared probe, measure the wheat germ temperature of discharge port, regulate microwave heating power automatically, realize the purpose of controlled microwave Heating temperature by system.Microwave heating temperature generally is set in 60～100 ℃, and optimum temps is 70～80 ℃.The too high meeting of temperature causes protein denaturation, temperature is too low go out enzyme not thoroughly, product moisture content height.
Through the wheatgerm of microwave drying, moisture content is 4～6%, and treated wheatgerm product acid number changes mild, and the acceleration storage period at 35 days has kept a variation tendency stably substantially, at room temperature can safe storage more than 6 months.
Adopt intermittent type batch extractor group, under 0.2～0.8MPa pressure, wheatgerm is carried out the several adverse current leach.After batch extractor adds the wheat germ of stabilized processing, in leaching the vacuum pump drain tank, behind the air, inject pressurized liquefied solvent.The solvent of selecting for use comprises pressurized liquefied butane, 60～99% ethanol, acetone or Virahol etc., wherein preferred liquefied butane and 95% ethanol; Adverse current lixiviate number of times 1～4 time; Extraction time 10min～3h; 10～135 ℃ of extraction temperatures; Molten material is than 1～4: 1.
Leach to finish the back to the precipitation that reduces pressure of the mixing oil in the batch extractor, obtain the mixing oil of higher concentration, and will deviate from solvent through leaching compressor compresses after solvent tank is squeezed in condensation.
The solvent that contains in the mixing oil of higher concentration and the wet embryo dregs of rice volatilizees under the state of decompression.Wherein mixing oil makes solvent separate with grease through reduction vaporization, obtains crude oil.The embryo dregs of rice after the leaching make the solvent gasification in the wet embryo dregs of rice separate with the embryo dregs of rice through reduction vaporization, obtain low temperature and leach the embryo dregs of rice, i.e. defatted wheat germ.
Mixing oil at first is pumped to miscella tank, this oil tank is furnished with mixing oil import and outlet, slag-drip opening, air outlet, liquidometer, tensimeter and thermometer etc., major function is the buffer memory mixing oil, can also precipitate dregs of rice powder and regular discharge in the mixing oil, venting port can be got rid of the non-condensable gases that enters in the jar, reduces the pressure of jar.Mixing oil is taked three grades of negative pressure evaporation systems, and vacuum tightness is less than 0.095MPa, and the precipitation temperature is 25～100 ℃.After mixing oil entered the one-level vaporizer, solvent evaporated rapidly and separates with mixing oil in subnormal ambient, and the condensation after a steaming compressor compresses of solvent gas becomes liquid solvent, flows back to solvent tank.Entering secondary evaporimeter through the mixing oil of one-level evaporation concentration carries out double evaporation-cooling and concentrates and reclaim solvent.Enter vacuum precipitation tower through the mixing oil of double flash evaporation through well heater, deviate from residual moltenly, obtain leaching crude oil.The wet dregs of rice of wheat germ adopt single-stage negative pressure evaporation system, and after the wet dregs of rice entered negative pressure precipitation device, residual molten vaporization volatilization removed, and gets the high-quality embryo dregs of rice.
The solvent that evaporates from mixing oil and in the wet embryo dregs of rice, through the decompression vaporization, the solvent gas after the vaporization is again through recycling behind compressor compresses, the condensation liquefaction.The wheat germ crude oil can obtain high-quality wheatgerm oil after adopting conventional processing steps such as winterization, alkali refining and decolouring to handle.
Pressurized liquid extraction of the present invention, be to select for use organic solvent under higher temperature and pressure, to extract target components, utilized extraction kinetics principle with temperature correlation, be that pressurize can stop solvent to seethe with excitement being higher than under the temperature of atmospheric boiling point, heat simultaneously and can quicken extraction rate, the shortest only need 5 minutes, cycling extraction just can all extract the grease in the wheat germ for 1～3 time, throughput is 10～100 tons of day processing wheatgerms, and the wheatgerm oil production grease that extracting obtains with Soxhlet that obtains has similar lipid acid and forms.Because the reason that short extraction time and closed system lack oxygen, even therefore also generation of the isomerization of lipid acid and oxidation under 135 ℃ higher extraction temperature.But the present invention is adopting process internal system hot swapping scheme also, and the design hot water cyclesystem is taken from this system because of the vaporize heat part of required absorption of solvent in the precipitation process, and insufficient section is supplied with by boiler heating system again, thereby has effectively saved the energy.
Below in conjunction with four embodiment the present invention is described in detail again:
Embodiment 1
It is 15kg/h that square plansifter separates the wheatgerm flow that obtains, and original moisture content is 12.2%, sends into microwave deactivating enzyme equipment top opening for feed by elephant trunk, enters the mass transport cylinder then, diameter of cylinder 15cm, length 92cm, level inclination 5 degree.Opening transmission system to rotating speed is 32 commentariess on classics/min, when treating that the below discharge port has material to overflow, opens microwave system, and regulating microwave heating power is 2500w, and is that 45 commentaries on classics/min make and pass in and out material and reach balance by regulating drum rotational speed; Setting microwave heating temperature in Controlling System is 85 ℃, opens temperature control system then, measures the material temperature at material outlet place, regulates microwave heating power automatically by Controlling System; Open air conditioning system at last, damper, the damp-heat air that produces when removing microwave heating.After testing, the wheat germ moisture content is 3.9%.
The adverse current extracting technology is produced wheatgerm oil, and throughput is 30 tons of day processing wheatgerms.Adopt intermittent type jar group leaching-out technique scheme, under certain pressure, the wheatgerm of above-mentioned stabilized processing is carried out the leaching of several adverse current.Selecting 95% ethanol for use is solvent, adverse current lixiviate number of times 4 times, and extraction time 20min, 90 ℃ of extraction temperatures, molten material was than 2: 1.Mixing oil makes solvent separate with grease through reduction vaporization, obtains crude oil.Take three grades of negative pressure evaporation systems, vacuum tightness 0.095MPa, the precipitation temperature is 75 ℃.The embryo dregs of rice after the leaching make the solvent gasification in the wet embryo dregs of rice separate with the embryo dregs of rice through reduction vaporization, obtain leaching the embryo dregs of rice, i.e. defatted wheat germ.Take single-stage negative pressure evaporation system, vacuum tightness 0.095MPa, the precipitation temperature is 85 ℃.The solvent that evaporates from mixing oil and in the wet embryo dregs of rice, through the decompression gasification, the solvent gas after the gasification is again through recycling behind compressor compresses, the condensation liquefaction.The crude oil yield is 10.2%; Crude oil residual molten＜750mg/kg; Dregs of rice Residual oil≤0.9%.
Embodiment 2
It is 21kg/h that square plansifter separates the wheatgerm flow that obtains, and original moisture content is 12.5%, sends into microwave deactivating enzyme equipment top opening for feed by elephant trunk, enter the mass transport cylinder of job shop then, diameter of cylinder 15cm is set, length 92cm, level inclination 10 degree.Opening transmission system to rotating speed is 24 commentariess on classics/min, when treating that the below discharge port has material to overflow, opens microwave system, and regulating microwave heating power is 2000w, and is that 38 commentaries on classics/min make and pass in and out material and reach balance by regulating drum rotational speed; Setting microwave heating temperature in Controlling System is 70 ℃, opens temperature control system then, measures the material temperature at material outlet place, regulates microwave heating power automatically by Controlling System; Open air conditioning system at last, damper, the damp-heat air that produces when removing microwave heating.After testing, the wheat germ moisture content is 5.1%.
The adverse current extracting technology is produced wheatgerm oil, and throughput is 30 tons of day processing wheatgerms.Adopt intermittent type jar group leaching-out technique scheme, under certain pressure, the wheatgerm of above-mentioned stabilized processing is carried out the leaching of several adverse current.Selecting 95% ethanol for use is solvent; Adverse current lixiviate number of times 3 times; Extraction time 15min; 70 ℃ of extraction temperatures; Molten material was than 2.5: 1.Mixing oil makes solvent separate with grease through reduction vaporization, obtains crude oil.Take three grades of negative pressure evaporation systems, vacuum tightness 0.095MPa, the precipitation temperature is 75 ℃.The embryo dregs of rice after the leaching make the solvent gasification in the wet embryo dregs of rice separate with the embryo dregs of rice through reduction vaporization, obtain leaching the embryo dregs of rice, i.e. defatted wheat germ.Take single-stage negative pressure evaporation system, vacuum tightness 0.095MPa, the precipitation temperature is 85 ℃.The solvent that evaporates from mixing oil and in the wet embryo dregs of rice, through the decompression gasification, the solvent gas after the gasification is again through recycling behind compressor compresses, the condensation liquefaction.The crude oil yield is 9.9%; Crude oil residual molten＜800mg/kg; Dregs of rice Residual oil≤1.3%.
Embodiment 3
It is 20kg/h that square plansifter separates the wheatgerm flow that obtains, and original moisture content is 12.3%, sends into microwave deactivating enzyme equipment top opening for feed by elephant trunk, enter the mass transport cylinder of job shop then, diameter of cylinder 15cm is set, length 92cm, level inclination 10 degree.Opening transmission system to rotating speed is 24 commentariess on classics/min, when treating that the below discharge port has material to overflow, opens microwave system, and regulating microwave heating power is 2000w, and is that 60 commentaries on classics/min make and pass in and out material and reach balance by regulating drum rotational speed; Setting microwave heating temperature in Controlling System is 75 ℃, opens temperature control system then, measures the material temperature at material outlet place, regulates microwave heating power automatically by Controlling System; Open air conditioning system at last, damper, the damp-heat air that produces when removing microwave heating.After testing, the wheat germ moisture content is 5.0%.
To compress the leaching that the gaseous state butane that liquefies the back is used for wheatgerm oil, under pressurized state, butane leaches grease with liquid form, and the solvent that contains in the mixing oil and the wet embryo dregs of rice is volatilization naturally under the state of decompression.Adopt adverse current four soaking technologies to produce wheatgerm oil, 30 tons of day processing wheatgerms.
Adopt intermittent type jar group leaching-out technique scheme, under 0.4MPa pressure, the wheatgerm of above-mentioned stabilized processing is carried out 4 adverse currents leach.Selecting liquefied butane for use is to leach solvent, adverse current lixiviate number of times 4 times, and extraction time 2h, 30 ℃ of extraction temperatures, molten material was than 1.3: 1.Mixing oil makes solvent separate with grease through reduction vaporization, obtains crude oil.Take three grades of negative pressure evaporation systems, vacuum tightness 0.095MPa, the precipitation temperature is 55 ℃.The embryo dregs of rice after the leaching make the solvent gasification in the wet embryo dregs of rice separate with the embryo dregs of rice through reduction vaporization, obtain low temperature and leach the embryo dregs of rice, i.e. defatted wheat germ.Take single-stage negative pressure evaporation system, vacuum tightness 0.095MPa, the precipitation temperature is 65 ℃.The solvent that evaporates from mixing oil and in the wet embryo dregs of rice recycles after the solvent gas after the decompression gasification is again through compressor compresses, condensation liquefaction.The crude oil yield is 9.8%; Crude oil residual molten＜500mg/kg; Dregs of rice Residual oil≤1.2%.
Embodiment 4
It is 15kg/h that square plansifter separates the wheatgerm flow that obtains, and original moisture content is 12.2%, sends into microwave deactivating enzyme equipment top opening for feed by elephant trunk, enters the mass transport cylinder then, diameter of cylinder 15cm, length 92cm, level inclination 5 degree.Opening transmission system to rotating speed is 32 commentariess on classics/min, when treating that the below discharge port has material to overflow, opens microwave system, and regulating microwave heating power is 2500w, and is that 48 commentaries on classics/min make and pass in and out material and reach balance by regulating drum rotational speed; Setting microwave heating temperature in Controlling System is 85 ℃, opens temperature control system then, measures the material temperature at material outlet place, regulates microwave heating power automatically by Controlling System; Open air conditioning system at last, damper, the damp-heat air that produces when removing microwave heating.After testing, the wheat germ moisture content is 3.8%.
Adopt intermittent type jar group leaching-out technique scheme, under 0.4MPa pressure, the wheatgerm of above-mentioned stabilized processing is carried out 4 adverse currents leach.Selecting liquefied butane for use is to leach solvent, adverse current lixiviate number of times 4 times, and each lixiviate 3h, 30 ℃ of extraction temperatures, molten material was than 1.5: 1.Mixing oil makes solvent separate with grease through reduction vaporization, obtains crude oil.Take three grades of negative pressure evaporation systems, vacuum tightness 0.095MPa, the precipitation temperature is 55 ℃.The embryo dregs of rice after the leaching make the solvent gasification in the wet embryo dregs of rice separate with the embryo dregs of rice through reduction vaporization, obtain low temperature and leach the embryo dregs of rice, i.e. defatted wheat germ.Take single-stage negative pressure evaporation system, vacuum tightness 0.095MPa, the precipitation temperature is 65 ℃.The solvent that evaporates from mixing oil and in the wet embryo dregs of rice recycles after the solvent gas after the decompression gasification is again through compressor compresses, condensation liquefaction.The crude oil yield is 10.2%; Crude oil residual molten＜500mg/kg; Dregs of rice Residual oil≤0.9%.
Claims (6)
1. the method for an extracting wheat germ oil by compression solvent is characterized in that in turn including the following steps:
(1) online microwave deactivating enzyme: the microwave drying device is installed in the whole meal flour job shop, and match with the machining production line of milling plant, from the isolated fresh wheat germ of square plansifter, carry by elephant trunk, directly enter microwave drier, and carry out the cryodrying and the enzyme that goes out;
(2) pressurized liquid extraction: under the pressure of 0.2～0.8MPa, select liquefied butane, ethanol or Virahol equal solvent for use, step (1) is carried out the leaching of several adverse current through the wheatgerm of microwave treatment, again solvent precipitation under the state of decompression to containing in the mixing oil and the wet embryo dregs of rice;
(3) solvent recuperation: the solvent that from mixing oil and in the wet embryo dregs of rice, evaporates, through the decompression vaporization, the solvent gas after the vaporization is again through recycling behind compressor compresses, the condensation liquefaction;
(4) crude oil refining: the wheat germ crude oil adopts conventional winterization, alkali refining and decoloration process.
2. the method for a kind of extracting wheat germ oil by compression solvent according to claim 1, it is characterized in that: the microwave heating power in the step (1) is 1～4kw, and microwave heating time is 30s～6min, and microwave heating temperature is set at 60～100 ℃.
3. the method for a kind of extracting wheat germ oil by compression solvent according to claim 2, it is characterized in that: described microwave heating power is 2～2.5kw; Microwave heating time is 3～5min, and microwave heating temperature is set at 70～80 ℃.
4. the method for a kind of extracting wheat germ oil by compression solvent according to claim 1, it is characterized in that: step is selected 60～99% ethanol, acetone or Virahol etc. for use in (2), wherein preferred liquefied butane and 95% ethanol; Adverse current lixiviate number of times 1～4 time; Extraction time 10min～3h; 10～135 ℃ of extraction temperatures; Molten material ratio is 1～4: 1.
5. the method for a kind of extracting wheat germ oil by compression solvent according to claim 1, it is characterized in that: the precipitation technology of the mixing oil described in the step (2) under decompression state be with mixing oil through reduction vaporization, solvent is separated with grease, obtain crude oil, adopt three grades of negative pressure evaporation systems, vacuum tightness is less than 0.095MPa, and the precipitation temperature is 25～100 ℃.
6. the method for a kind of extracting wheat germ oil by compression solvent according to claim 1, it is characterized in that: the precipitation technology of wet dregs of rice precipitation under decompression state described in the step (2) is through reduction vaporization with the embryo dregs of rice after leaching, solvent gasification in the wet embryo dregs of rice is separated with the embryo dregs of rice, obtain low temperature and leach the embryo dregs of rice, adopt single-stage negative pressure evaporation system, vacuum tightness is less than 0.095MPa, and the precipitation temperature is 25～100 ℃.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831349A (en) * | 2010-04-13 | 2010-09-15 | 山东轻工业学院 | Method for extracting wheat-germ oil continuously by using microwave secondary solvent |
| CN102100977A (en) * | 2009-12-18 | 2011-06-22 | 中国科学院大连化学物理研究所 | Pressing solvent extraction device for absorbing extracting solvent under negative pressure |
| CN102206540A (en) * | 2011-04-14 | 2011-10-05 | 王朝阳 | Method for separating grease and crude protein in plant seeds |
| CN102835542A (en) * | 2012-09-07 | 2012-12-26 | 山东省高唐蓝山集团总公司 | Method for preparing soy protein concentrate by tank group type soaking and extracting |
| CN103409230A (en) * | 2013-07-17 | 2013-11-27 | 福建农林大学 | Method for low temperature extraction of plant oil through n-butane-ethanol-water double phase solvent |
| CN103497830A (en) * | 2013-10-11 | 2014-01-08 | 江南大学 | High-quality wheat germ oil and subcritical preparation method thereof |
| CN103937605A (en) * | 2014-05-05 | 2014-07-23 | 陕西杨凌佳美生物科技有限公司 | Extraction method of wheat germ oil |
| CN105482891A (en) * | 2015-09-30 | 2016-04-13 | 东明县益康源食品有限公司 | Preparation method for selenium-rich wheat germ oil |
| CN105602713A (en) * | 2016-03-16 | 2016-05-25 | 河北农苍盛生物科技有限公司 | Millet germ oil and preparation method thereof |
| CN109609263A (en) * | 2018-12-14 | 2019-04-12 | 内蒙古燕谷坊全谷物产业发展有限责任公司 | A kind of preparation process and oat oil of oat oil |
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- 2007-09-03 CN CNA2007101309440A patent/CN101121910A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102100977A (en) * | 2009-12-18 | 2011-06-22 | 中国科学院大连化学物理研究所 | Pressing solvent extraction device for absorbing extracting solvent under negative pressure |
| CN102100977B (en) * | 2009-12-18 | 2013-01-02 | 中国科学院大连化学物理研究所 | Pressing solvent extraction device for absorbing extracting solvent under negative pressure |
| CN101831349A (en) * | 2010-04-13 | 2010-09-15 | 山东轻工业学院 | Method for extracting wheat-germ oil continuously by using microwave secondary solvent |
| CN102206540A (en) * | 2011-04-14 | 2011-10-05 | 王朝阳 | Method for separating grease and crude protein in plant seeds |
| CN102206540B (en) * | 2011-04-14 | 2014-01-22 | 王朝阳 | Method for separating grease and crude protein in plant seeds |
| CN102835542A (en) * | 2012-09-07 | 2012-12-26 | 山东省高唐蓝山集团总公司 | Method for preparing soy protein concentrate by tank group type soaking and extracting |
| CN103409230A (en) * | 2013-07-17 | 2013-11-27 | 福建农林大学 | Method for low temperature extraction of plant oil through n-butane-ethanol-water double phase solvent |
| CN103497830A (en) * | 2013-10-11 | 2014-01-08 | 江南大学 | High-quality wheat germ oil and subcritical preparation method thereof |
| CN103937605A (en) * | 2014-05-05 | 2014-07-23 | 陕西杨凌佳美生物科技有限公司 | Extraction method of wheat germ oil |
| CN105482891A (en) * | 2015-09-30 | 2016-04-13 | 东明县益康源食品有限公司 | Preparation method for selenium-rich wheat germ oil |
| CN105602713A (en) * | 2016-03-16 | 2016-05-25 | 河北农苍盛生物科技有限公司 | Millet germ oil and preparation method thereof |
| CN109609263A (en) * | 2018-12-14 | 2019-04-12 | 内蒙古燕谷坊全谷物产业发展有限责任公司 | A kind of preparation process and oat oil of oat oil |
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