CN109082340A - A kind of cold system oil expression method of rapeseed - Google Patents
A kind of cold system oil expression method of rapeseed Download PDFInfo
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- 235000004977 Brassica sinapistrum Nutrition 0.000 title claims abstract description 151
- 238000000034 method Methods 0.000 title claims abstract description 38
- 244000188595 Brassica sinapistrum Species 0.000 title claims abstract 44
- 239000010729 system oil Substances 0.000 title abstract description 8
- 240000002791 Brassica napus Species 0.000 claims abstract description 112
- 239000003921 oil Substances 0.000 claims abstract description 92
- 235000019198 oils Nutrition 0.000 claims abstract description 91
- 235000019484 Rapeseed oil Nutrition 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000001035 drying Methods 0.000 claims abstract description 18
- 239000012535 impurity Substances 0.000 claims abstract description 18
- 238000000746 purification Methods 0.000 claims abstract description 18
- 238000010257 thawing Methods 0.000 claims abstract description 11
- 230000008014 freezing Effects 0.000 claims abstract description 10
- 238000007710 freezing Methods 0.000 claims abstract description 10
- 235000011293 Brassica napus Nutrition 0.000 claims abstract description 5
- 238000007667 floating Methods 0.000 claims description 27
- 239000002344 surface layer Substances 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 22
- 210000003934 vacuole Anatomy 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 18
- 239000010779 crude oil Substances 0.000 claims description 17
- 239000003595 mist Substances 0.000 claims description 10
- 239000010499 rapseed oil Substances 0.000 claims description 7
- 235000013311 vegetables Nutrition 0.000 claims description 7
- 239000000284 extract Substances 0.000 claims description 6
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 5
- 239000010410 layer Substances 0.000 claims description 5
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 5
- 239000001509 sodium citrate Substances 0.000 claims description 5
- 238000006424 Flood reaction Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 230000002123 temporal effect Effects 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims 2
- 230000008023 solidification Effects 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000003801 milling Methods 0.000 abstract 1
- 239000008157 edible vegetable oil Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 241000219193 Brassicaceae Species 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- HUJXHFRXWWGYQH-UHFFFAOYSA-O sinapine Chemical compound COC1=CC(\C=C\C(=O)OCC[N+](C)(C)C)=CC(OC)=C1O HUJXHFRXWWGYQH-UHFFFAOYSA-O 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000006008 Brassica napus var napus Nutrition 0.000 description 1
- 240000000385 Brassica napus var. napus Species 0.000 description 1
- DPUOLQHDNGRHBS-UHFFFAOYSA-N Brassidinsaeure Natural products CCCCCCCCC=CCCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-UHFFFAOYSA-N 0.000 description 1
- 108010082495 Dietary Plant Proteins Proteins 0.000 description 1
- URXZXNYJPAJJOQ-UHFFFAOYSA-N Erucic acid Natural products CCCCCCC=CCCCCCCCCCCCC(O)=O URXZXNYJPAJJOQ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- DPUOLQHDNGRHBS-KTKRTIGZSA-N erucic acid Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-KTKRTIGZSA-N 0.000 description 1
- 235000019197 fats Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000004459 forage Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 210000000582 semen Anatomy 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 235000019871 vegetable fat Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/02—Pretreatment
- C11B1/04—Pretreatment of vegetable raw material
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/06—Production of fats or fatty oils from raw materials by pressing
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/02—Refining fats or fatty oils by chemical reaction
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Fats And Perfumes (AREA)
Abstract
The present invention relates to rapeseed processing technique fields, and in particular to a kind of cold system oil expression method of rapeseed.The cold system oil expression method of the rapeseed includes 5 main milling process such as removing impurities of rapeseeds, rapeseed drying, rapeseed cool-drying, rapeseed shelling oil expression, rapeseed oil purification process；By multiple dedoping step, impurity and ghost rapeseed are removed, oil expression efficiency is effectively improved；It is dried after impregnating rapeseed by warm water, so that rapeseed interior tissue is sprouted actively, effectively improves rapeseed oil productivity；Pass through rapeseed exuviating technology, rapeseed dehulled is extracted oil respectively with Rapeseed Shell, and pass through freezing and defrosting purification process, further remove the impurity in first product rapeseed oil, achieve the purpose that purify rapeseed oil, the quality of finished product rapeseed oil is improved, the rapeseed dehulled oil and Rapeseed Shell oil squeezed out can be respectively applied to different fields.
Description
Technical field
The present invention relates to rapeseed processing technique fields, and in particular to a kind of cold system oil expression method of rapeseed.
Background technique
Rapeseed, also referred to as brassicae chinensis,semen, the fruit of crop in cruciferae rape, silique is longer, bears pods more, and grain sheet is full；
Draft crop in cruciferae, one of Chinese major oil crops and nectar source crop, seed are immersion oil fat raw material principal item processed
One of.The content of grease is 37.5%~46.3% in rapeseed.It is slightly different according to its different fat content of the type of rape.
Rapeseed is cultivation throughout China, is divided into winter rape and two kinds of spring rape.Its cultivated area accounts for the Chinese oil crops gross area
40% or more, yield accounts for 30% or more of Chinese oil plant total output, occupies first place in the world.Contain a certain amount of erucic acid in rapeseed,
It will affect the quality of rapeseed and rapeseed oil.Also have one containing chemical substances such as a certain amount of sinapine, tannin in rapeseed
Fixed toxicity, therefore rape cake could make feed after needing detoxification.Quality rape grouts contain vegetable protein abundant, are good edible
And forage protein.
With the improvement of living standards, demand of the people to edible vegetable oil increases year by year.In recent years, China's import grease
Oil plant quantity average year increases by 35.3%.The degree of self-sufficiency of edible vegetable oil drops to current 37% by the 60% of the beginning of this century
Left and right.The edible vegetable oil and fat degree of self-sufficiency quite lacks, and the demand of especially high-end edible vegetable oil is quite in short supply, is badly in need of development and production
It is suitble to the high-end edible vegetable oil of our people's life.
Meanwhile China's rapeseed planting range is wide, abundance, the extraction and utilization of rapeseed oil can effectively solve people couple
The demand of edible oil.
But existing branded oil vegetable seed processing technology is still processed using traditional hot moulding technique, such as pre- squeezing-leaching
Method oil-producing technique, steaming stir-fry-oil extraction by pressing technique etc. out, since rapeseed green compact pass through the high temperature of long period in this kind of technique
It steams and fries, and squeeze out in advance crude oil at 110~120 DEG C by screw oil expellers, crude oil becomes after degumming, depickling, removing impurities and dehydration
Edible level Four finished product rape oil becomes refined oil after level Four rape oil is refined using depickling, deodorization, decoloration etc..These systems
Oily method is liquefaction under the conditions of high temperature high-moisture, under the color burn and quality that cause the resulting rapeseed oil of hot moulding and grouts
Drop, and it is easily destroyed nutritional ingredient abundant in this kind of branded oil vegetable seed, the quality for the edible vegetable oil produced is still bad, existing
Having technology, there are also biggish rooms for improvement.
Summary of the invention
To solve the above-mentioned problems, overcome the shortcomings of existing rapeseed oil technology, improve the oil production and dish of rapeseed
The quality of seed oil, the present invention provides a kind of cold system of rapeseed oil expression methods.
The present invention is achieved by the following technical solutions:
A kind of cold system oil expression method of rapeseed, comprising the following steps:
A, removing impurities of rapeseeds: taking fresh rapeseed produced in that year, and selection by winnowing removes impurity, is placed under burning sun the 2~3d that is exposed to the sun, then
Secondary selection by winnowing removes impurity, and finished product rapeseed, which is placed at the drying of complete darkness, stores 3~5d；
B, rapeseed is dry: the rapeseed after taking above-mentioned storage, is placed in 50~63 DEG C of hot air type drier to be dried to and contains
Water is 8~10%, and taking-up is put at dry and ventilated and is cooled to room temperature, until pouring into 32~35 DEG C clear after rapeseed is completely cold
In water, control clear water floods 5~7cm of rapeseed, and constant temperature impregnates 4~5h, and stirring is primary per hour, and last time is stood after stirring
1h skims surface layer floating rapeseed；
C, rapeseed cool-drying: taking rapeseed under the liquid level after above-mentioned immersion, drain surface moisture be placed on 35~
1.5~2h is dried in 40 DEG C of hot air type drier；Promoted drying temperature to 55~60 DEG C, be dried to rapeseed water content be 4~
5%, it spreads and is cooled to room temperature at shady and cool ventilation, spraying humidification to rapeseed water content is 6~7%；
D, rapeseed shelling oil expression: the rapeseed for taking above-mentioned cool-drying to terminate is put into hulling machine and sloughs rapeseed shell,
Rape seed is produced in separation, is put into twin-screw press and is carried out oil expression processing, and first product rapeseed oil is made；Rapeseed hull is taken, is put
Enter and carry out oil expression processing in twin-screw press, rapeseed crude oil is made；
E, rapeseed oil purification process: taking first product rapeseed oil obtained above, is mixed into rapeseed crude oil or is not mixed into rapeseed
Crude oil, addition account for the millesimal sodium citrate of oily gross weight, and stirring and dissolving is uniform, and step-by-step freezing is extremely after oil temperature is cooled to room temperature
Rape oil solidifies completely, then thaws step by step, until to get finished product rapeseed oil when oil temperature is room temperature.
Preferably, in step (a), the burning sun be exposed to the sun temperature be 28~32 DEG C；Be exposed to the sun Time Continuous or discontinuous, in case of
Rainy days, then pause is exposed to the sun, until the temporal summation of being exposed to the sun of rapeseed is 2~3d；I.e. two neighboring rapeseed is exposed to the sun in the daytime
It can be spaced 1d or more, guarantee that rapeseed is dry abundant；
During pause is exposed to the sun, rapeseed is deposited at the dry and ventilated of air humidity≤15%.
Preferably, in step (c), the spraying humidification method is as follows:
Take water content be 4~5% rapeseed, spread and be cooled to room temperature at shady and cool ventilation, be transferred to revolving speed 2100~
In the agitator tank of 2150r/min, additional amount is stir tank volume 1/2, and 10~15 DEG C of temperature of water mist is sprayed into agitator tank,
Closed agitator tank, constant speed stirring do not stop to increase the water mist amount in agitator tank, until rapeseed moisture content is 6~7%.
Preferably, in step (d), the rape seed extracts oil 35~43 DEG C of temperature；Rapeseed hull oil expression temperature 45~42
℃。
Preferably, in step (e), the first product rapeseed oil step-by-step freezing method is as follows:
The first product rapeseed oil being cooled to room temperature is taken, it is floating to remove surface layer floating material and oil vacuole, 3 are freezed at a temperature of 8~10 DEG C
~4h is floated go surface layer floating material and oil vacuole primary per hour；
Adjusting cryogenic temperature again is -1~1 DEG C, freezes 1.5~2h, floats go surface layer floating material and oil vacuole primary per hour；
Finally adjusting cryogenic temperature is -15~-12 DEG C, and per half an hour, which floats, goes surface layer floating material and oil vacuole primary；It is refrigerated to
Rapeseed oil solidifies completely, continues 10~15min of cryostat.
Preferably, in step (e), defreezing method is as follows step by step for the first product rapeseed oil:
The rapeseed oil solidified entirely is taken, 7 × 3 × 2cm is cut into3Bulk, be placed in above 200 mesh filter screens, fix 2 on strainer
~3 layers of clean dry gauze, strainer positioned beneath rape oil collection device, thaw 2~3h at a temperature of 0~2 DEG C；
Adjusting thaw point again is 8~12 DEG C, and thaw 2~3h；
Finally adjusting cryogenic temperature is room temperature, and thaw 3~5h.
Preferably, in rapeseed oil step-by-step freezing or step by step course of defrosting, control air humidity≤20% is also needed；I.e. in dish
In seed oil step-by-step freezing or step by step course of defrosting, air humidity≤20% of freezing chamber or defrosting room is controlled.
Preferably, the rapeseed crude oil can be mixed into first product rapeseed oil progress rapeseed oil purification process, can also directly into
Row rapeseed oil purification process, and by rapeseed oil separate collection after purification.Finished product rapeseed dehulled oil and finished product Rapeseed Shell oil.
The rapeseed crude oil purification treating method is identical with first product rapeseed oil purification treating method, condition it is identical or
It is not identical.
In the technical solution provided by the present invention, the finished product Rapeseed Shell oil that the rapeseed hull squeezes is mainly used in chemical industry
Field, such as fold fuel oil, lubrication oil release agent；The finished product rapeseed dehulled oil that the rape seed squeezes is mainly used in food
Manufacture field.
The beneficial effects of the present invention are:
Compared with prior art, the present invention removes impurity and ghost rapeseed, effectively improves squeezing by multiple dedoping step
Oily efficiency；The present invention is dried after also impregnating rapeseed by warm water, so that rapeseed interior tissue is sprouted actively, effectively improves oil
Vegetable seed oil productivity；By cold mist rise rapeseed water content, and oil expression processing is carried out at a lower temperature, prevent rapeseed oil phosphorus
The generation of rouge improves the quality and oil productivity of oil；By rapeseed exuviating technology, rapeseed dehulled is extracted oil respectively with Rapeseed Shell, is had
Effect improves the quality of finished product rapeseed oil, and the two kinds of rapeseed oils squeezed out can be applied to different fields；Finally, the present invention also passes through
The freezing of first product rapeseed oil and defrosting purification process further remove the impurity in first product rapeseed oil, reach the mesh of purifying rapeseed oil
, improve the quality of finished product rapeseed oil.
Specific embodiment
The present invention is further described in detail With reference to embodiment, but technical solution provided by the invention
The content not only showed in treasure-house embodiment.
Embodiment 1
A kind of cold system oil expression method of rapeseed is present embodiments provided, detailed process is as follows:
The first step, removing impurities of rapeseeds: taking fresh rapeseed produced in that year, and selection by winnowing removes impurity, is placed under burning sun the 3d that is exposed to the sun,
Such as rainy days, then pause is exposed to the sun, until the temporal summation of being exposed to the sun of rapeseed is 3d；I.e. two neighboring rapeseed is exposed to the sun in the daytime
It can be spaced 1d or more, guarantee that rapeseed is dry abundant；During pause is exposed to the sun, rapeseed is deposited in into air humidity and is no more than
At 15% dry and ventilated, selection by winnowing removes impurity again after being exposed to the sun, and finished product rapeseed is placed at the drying of complete darkness and deposits
Put 3d；
Second step, rapeseed are dry: the rapeseed after taking above-mentioned storage, are placed in 50 DEG C of hot air type drier to be dried to and contain
Water is 10%, and taking-up is put at dry and ventilated and is cooled to room temperature, until being poured into 32 DEG C of clear water after rapeseed is completely cold, is controlled
Clear water processed floods rapeseed 7cm, and constant temperature impregnates 5h, and stirring is primary per hour, and last time stands 1h after stirring, and skims surface layer drift
Oil slick vegetable seed；
Third step, rapeseed cool-drying: rapeseed under the liquid level after above-mentioned immersion is taken, surface moisture is drained and is placed on
2h is dried in 35 DEG C of hot air type drier；Drying temperature is promoted to 55 DEG C, being dried to rapeseed water content is 5%, is spread in yin
Cool ventilation is cooled to room temperature, and is transferred in the agitator tank of revolving speed 2100r/min, and additional amount is stir tank volume 1/2, to stirring
It mixes and sprays 10 DEG C of temperature of water mist in tank, closed agitator tank, constant speed stirring does not stop to increase the water mist amount in agitator tank, until oil
Vegetable seed moisture content is 7%；
4th step, rapeseed shelling oil expression: the rapeseed for taking above-mentioned cool-drying to terminate is put into hulling machine and sloughs rapeseed
Shell, separation produce rape seed, are put into twin-screw press and carry out oil expression processing, extract oil 38 DEG C of temperature, and first product dish is made
Seed oil；Rapeseed hull is taken, is put into twin-screw press and carries out oil expression processing, is extracted oil 40 DEG C of temperature, rapeseed crude oil is made；
5th step, first product rapeseed oil purification process: taking first product rapeseed oil obtained above, and addition accounts for oily gross weight one thousandth
Sodium citrate, stirring and dissolving is uniform, floating that surface layer is gone to float after oil temperature is cooled to room temperature for wrapping suspension well cuts
Object and oil vacuole freeze 4h at a temperature of 8 DEG C, float go surface layer floating material and oil vacuole primary per hour；Adjusting cryogenic temperature again is 0
DEG C, 2h is freezed, floats go surface layer floating material and oil vacuole primary per hour；Finally adjusting cryogenic temperature is -15 DEG C, and per half an hour floats and goes
Surface layer floating material and oil vacuole are primary；It is refrigerated to rapeseed oil to solidify completely, continues cryostat 10min；
The rapeseed oil solidified completely is cut into 7 × 3 × 2cm3Bulk, be placed in above 200 mesh filter screens, fix 2 on strainer
The clean dry gauze of layer, the big oil cauldron of strainer positioned beneath, thaw 3h at a temperature of 0 DEG C；Adjusting thaw point again is 8 DEG C, defrosting 2h；
Finally adjusting cryogenic temperature is room temperature, and defrosting 5h is to get finished product rapeseed dehulled oil；
6th step, rapeseed crude oil purification process: the rapeseed crude oil for taking the 4th step to squeeze, addition account for oily gross weight thousand/
One sodium citrate, stirring and dissolving is uniform, floating that surface layer is gone to float after oil temperature is cooled to room temperature for wrapping suspension well cuts
Floating object and oil vacuole freeze 4h at a temperature of 8 DEG C, float go surface layer floating material and oil vacuole primary per hour；Cryogenic temperature is adjusted again
It is -1 DEG C, freezes 1.5h, floats go surface layer floating material and oil vacuole primary per hour；Finally adjusting cryogenic temperature is -12 DEG C, and every half is small
When floating go surface layer floating material and oil vacuole primary；It is refrigerated to rapeseed oil to solidify completely, continues cryostat 15min；
The rapeseed oil solidified completely is cut into 7 × 3 × 2cm3Bulk, be placed in above 200 mesh filter screens, fix 3 on strainer
The clean dry gauze of layer, the big oil cauldron of strainer positioned beneath, thaw 3h at a temperature of 0 DEG C；Adjusting thaw point again is 10 DEG C, is thawed
2h；Finally adjusting cryogenic temperature is room temperature, and defrosting 5h is to get finished product rapeseed dehulled oil；
Embodiment 2
A kind of cold system oil expression method of rapeseed is present embodiments provided, detailed process is as follows:
The first step, removing impurities of rapeseeds: taking fresh rapeseed produced in that year, and selection by winnowing removes impurity, is placed under burning sun the 2d that is exposed to the sun,
Such as rainy days, then pause is exposed to the sun, until the temporal summation of being exposed to the sun of rapeseed is 2d；I.e. two neighboring rapeseed is exposed to the sun in the daytime
It can be spaced 1d or more, guarantee that rapeseed is dry abundant；During pause is exposed to the sun, rapeseed is deposited in into air humidity and is no more than
At 15% dry and ventilated, selection by winnowing removes impurity again after being exposed to the sun, and finished product rapeseed is placed at the drying of complete darkness and deposits
Put 2d；
Second step, rapeseed are dry: the rapeseed after taking above-mentioned storage, are placed in 63 DEG C of hot air type drier to be dried to and contain
Water is 8%, and taking-up is put at dry and ventilated and is cooled to room temperature, until being poured into 35 DEG C of clear water after rapeseed is completely cold, is controlled
Clear water processed floods rapeseed 5cm, and constant temperature impregnates 4h, and stirring is primary per hour, and last time stands 1h after stirring, and skims surface layer drift
Oil slick vegetable seed；
Third step, rapeseed cool-drying: rapeseed under the liquid level after above-mentioned immersion is taken, surface moisture is drained and is placed on
1.5h is dried in 40 DEG C of hot air type drier；Promoted drying temperature to 60 DEG C, be dried to rapeseed water content be 4%, spread in
It being cooled to room temperature, is transferred in the agitator tank of revolving speed 2150r/min at shady and cool ventilation, additional amount is stir tank volume 1/2, to
15 DEG C of temperature of water mist, closed agitator tank are sprayed in agitator tank, constant speed stirring does not stop to increase the water mist amount in agitator tank, until
Rapeseed moisture content is 6%；
4th step, rapeseed shelling oil expression: the rapeseed for taking above-mentioned cool-drying to terminate is put into hulling machine and sloughs rapeseed
Shell, separation produce rape seed, are put into twin-screw press and carry out oil expression processing, extract oil 35 DEG C of temperature, and first product dish is made
Seed oil；Rapeseed hull is taken, is put into twin-screw press and carries out oil expression processing, extract oil temperature 45 C, and rapeseed crude oil is made；
5th step, rapeseed oil purification process: taking first product rapeseed oil obtained above, is mixed into the addition of rapeseed crude oil and accounts for oil always
The millesimal sodium citrate of weight, stirring and dissolving is uniform, for wrapping suspension well cuts, after oil temperature is cooled to room temperature, floats
Surface layer floating material and oil vacuole are removed, 3h is freezed at a temperature of 10 DEG C, floats go surface layer floating material and oil vacuole primary per hour；It adjusts again
Cryogenic temperature is -1 DEG C, freezes 1.5h, floats go surface layer floating material and oil vacuole primary per hour；Finally adjusting cryogenic temperature is -12
DEG C, per half an hour, which floats, goes surface layer floating material and oil vacuole primary；It is refrigerated to rapeseed oil to solidify completely, continues cryostat 15min；
The rapeseed oil solidified completely is cut into 7 × 3 × 2cm3Bulk, be placed in above 200 mesh filter screens, fix 3 on strainer
The clean dry gauze of layer, strainer positioned beneath rape oil collection device, thaw 2h at a temperature of 2 DEG C；Adjusting thaw point again is 12 DEG C,
Defrosting 2h；Finally adjusting cryogenic temperature is room temperature, and defrosting 3h is to get finished product rapeseed oil.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form, appoint
What without departing from technical solution of the present invention content, according to the technical essence of the invention any modification to the above embodiments, etc.
With variation and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (8)
- The method 1. a kind of cold system of rapeseed is extracted oil, which comprises the following steps:A, removing impurities of rapeseeds: taking fresh rapeseed produced in that year, and selection by winnowing removes impurity, is placed under burning sun the 2~3d that is exposed to the sun, again wind Choosing removal impurity, finished product rapeseed, which is placed at the drying of complete darkness, stores 3~5d；B, rapeseed is dry: the rapeseed after taking above-mentioned storage is placed in 50~63 DEG C of hot air type drier and is dried to water content It is 8~10%, taking-up is put at dry and ventilated and is cooled to room temperature, until pouring into 32~35 DEG C of clear water after rapeseed is completely cold In, control clear water floods 5~7cm of rapeseed, and constant temperature impregnates 4~5h, and stirring is primary per hour, and last time is stood after stirring 1h skims surface layer floating rapeseed；C, rapeseed cool-drying: rapeseed under the liquid level after above-mentioned immersion is taken, surface moisture is drained and is placed on 35~40 DEG C Hot air type drier in dry 1.5~2h；Drying temperature is promoted to 55~60 DEG C, being dried to rapeseed water content is 4~5%, It spreads and is cooled to room temperature at shady and cool ventilation, spraying humidification to rapeseed water content is 6~7%；D, rapeseed shelling oil expression: the rapeseed for taking above-mentioned cool-drying to terminate is put into hulling machine and sloughs rapeseed shell, separation Rape seed is produced, is put into twin-screw press and carries out oil expression processing, first product rapeseed oil is made；Rapeseed hull is taken, is put into double Oil expression processing is carried out in screw oil expeller, and rapeseed crude oil is made；E, rapeseed oil purification process: taking first product rapeseed oil obtained above, is mixed into rapeseed crude oil or is not mixed into rapeseed crude oil, Addition accounts for the millesimal sodium citrate of oily gross weight, and stirring and dissolving is uniform, and step-by-step freezing is to rape oil after oil temperature is cooled to room temperature Solidification completely, then thaw step by step, until to get finished product rapeseed oil when oil temperature is room temperature.
- The method 2. a kind of cold system of rapeseed according to claim 1 is extracted oil, which is characterized in that described strong in step (a) Temperature of being exposed to the sun day is 28~32 DEG C；Be exposed to the sun Time Continuous or discontinuous, and such as rainy days, then pause is exposed to the sun, until rapeseed Temporal summation of being exposed to the sun is 2~3d；During pause is exposed to the sun, rapeseed is deposited at the dry and ventilated of air humidity≤15%.
- The method 3. a kind of cold system of rapeseed according to claim 1 is extracted oil, which is characterized in that in step (c), the spray Mist air-humidification method is as follows:Take water content be 4~5% rapeseed, spread and be cooled to room temperature at shady and cool ventilation, be transferred to revolving speed 2100~ In the agitator tank of 2150r/min, additional amount is stir tank volume 1/2, and 10~15 DEG C of temperature of water mist is sprayed into agitator tank, Closed agitator tank, constant speed stirring do not stop to increase the water mist amount in agitator tank, until rapeseed moisture content is 6~7%.
- The method 4. a kind of cold system of rapeseed according to claim 1 is extracted oil, which is characterized in that in step (d), the oil Rapeseed dehulled extracts oil 35~43 DEG C of temperature；Rapeseed hull extracts oil 45~42 DEG C of temperature.
- The method 5. a kind of cold system of rapeseed according to claim 1 is extracted oil.It is characterized in that, in step (e), it is described first It is as follows to savor rapeseed oil step-by-step freezing method:The first product rapeseed oil being cooled to room temperature is taken, it is floating to remove surface layer floating material and oil vacuole, 3~4h is freezed at a temperature of 8~10 DEG C, Floating per hour goes surface layer floating material and oil vacuole primary；Adjusting cryogenic temperature again is -1~1 DEG C, freezes 1.5~2h, floats go surface layer floating material and oil vacuole primary per hour；Finally adjusting cryogenic temperature is -15~-12 DEG C, and per half an hour, which floats, goes surface layer floating material and oil vacuole primary；It is refrigerated to vegetable seed Oily solidification completely, continues 10~15min of cryostat.
- The method 6. a kind of cold system of rapeseed according to claim 1 is extracted oil.It is characterized in that, in step (e), it is described first Savoring rapeseed oil, defreezing method is as follows step by step:The rapeseed oil solidified entirely is taken, 7 × 3 × 2cm is cut into3Bulk, be placed in above 200 mesh filter screens, fix 2~3 layers on strainer Clean dry gauze, strainer positioned beneath rape oil collection device, thaw 2~3h at a temperature of 0~2 DEG C；Adjusting thaw point again is 8~12 DEG C, and thaw 2~3h；Finally adjusting cryogenic temperature is room temperature, and thaw 3~5h.
- The method 7. a kind of cold system of rapeseed according to claim 6 or 7 is extracted oil.It is characterized in that, rapeseed oil step by step Freezing or step by step in course of defrosting, also needs control air humidity≤20%.
- The method 8. a kind of cold system of rapeseed according to claim 1 is extracted oil.It is characterized in that, the rapeseed crude oil can It is mixed into first product rapeseed oil progress rapeseed oil purification process, can also directly carry out rapeseed oil purification process, and by dish after purification Seed oil separate collection；The rapeseed crude oil purification treating method is identical with first product rapeseed oil purification treating method.
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| CN111592926A (en) * | 2020-04-28 | 2020-08-28 | 渠县通济油脂有限责任公司 | Rapeseed oil processing method |
| CN113980731A (en) * | 2020-07-27 | 2022-01-28 | 丰益(上海)生物技术研发中心有限公司 | Strong-flavor rapeseed oil and preparation process thereof |
| CN115261132A (en) * | 2022-08-05 | 2022-11-01 | 吉林出彩农业产品开发有限公司 | Soybean blend oil with oxidation resistance and balanced nutrition and preparation method thereof |
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