CN104450164A - Method for preparing oil from high-quality rapeseeds with high content of oil under low-temperature and low-moisture conditions - Google Patents
Method for preparing oil from high-quality rapeseeds with high content of oil under low-temperature and low-moisture conditions Download PDFInfo
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- 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
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23D—EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS, COOKING OILS
- A23D9/00—Other edible oils or fats, e.g. shortenings, cooking oils
- A23D9/02—Other edible oils or fats, e.g. shortenings, cooking oils characterised by the production or working-up
- A23D9/04—Working-up
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- 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
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- 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
- C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
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Abstract
The invention discloses a method for preparing oil from high-quality rapeseeds with high content of oil under low-temperature and low-moisture conditions. The method comprises the following steps: selecting raw materials, cleaning and carefully choosing the raw materials, drying and conditioning at a low temperature, conditioning, peeling the rapeseeds, separating peels from kernels, conditioning at a low temperature, squeezing at a low temperature and carrying out pure physical filtration and fine filtration. High-quality natural high-grade and high-end oil is obtained from the high-quality rapeseeds with high content of oil under low-temperature and low-moisture pure physical process technical conditions, compared with commercially available leaching oil and hot-pressed oil, the rapeseed oil is natural, clear and transparent, has golden color and is rich in natural vitamin E and phytosterols; the content of protein in the cakes is increased and the biological activity of protein in rapeseed meals is ensured; the method has the advantages of low energy consumption, low cost and no pollutants.
Description
Technical field
The present invention relates to rapeseed oil technical field, especially relate to a kind of method utilizing high oil content branded oil vegetable seed liquefaction under low temperature low moisture condition.
Background technology
Along with growth in the living standard, the demand of people to edible vegetable oil increases year by year.In recent years, China's imported oil fatty oil material quantity rises to 2088.9 ten thousand tons in 2010 by 461.4 ten thousand tons in 2000, increases by 535% during the decade, and average year increases by 35.3%.The degree of self-sufficiency of edible vegetable oil is by dropping to current about 37% 60% of the beginning of this century.The edible vegetable oil and fat degree of self-sufficiency quite lacks, and the demand of high-end especially edible vegetable oil is quite in short supply, is badly in need of the high-end edible vegetable oil that Development and Production is applicable to our people's life.
Semen Brassicae campestris is one of China four great tradition oil crops, and excellent rape variety is most important for the output improving edible vegetable oil.American-European scientist's current research shows, frequent edible high quality rapeseed oil, not only be conducive to reducing blood cholesterol levels, improve blood lipid level, prevention of arterial hardens, reduce cardiovascular morbidity and delay senility, but also be conducive to the growth of blood vessel, nerve and brain, baby and teen-age brain healthy.High oil content quality rape is oil length and quality is all high-quality oil plant and protein resource.Over nearly 10 years, Guizhou Province rapeseed breeding expert is combined with breeding for heterosis by yellow seed breeding for double low content in rapeseed, utilize " yellow seed height oil content+high protein is two low " hybrid rape breeding technique, the two low quality rape new variety of the yellow seed of large quantities of high oil content are bred as, as " oil grinds 57, oil grinds 817, oil grinds 818, oil grinds 50, oil grind No. 10, good fortune oil 508 " etc.These kind achievement oleaginousness more than 45%, content of erucic acid is less than 1%, glucosinolate content is less than 30 micromoles per gram, unsaturated fatty acid content only has 7% up to 93%(saturated fatty acid content), 62%, 18%, 9% is respectively to the healthy and helpful oleic acid of human body cardiovascular and cerebrovascular, linolic acid, the large fatty acid content of linolenic acid three, it consists of the nutritive props of the natural balance of 7:2:1, and linolic acid and linolenic acid meet the golden ratio of 2:1; Also be rich in the micro-nutrient compositions such as multiple needed by human natural VE, plant sterol and β-carotene.Can say, the breeding technique of high oil content quality rape is attended by the most momentous results, but how to utilize this kind of Semen Brassicae campestris to make the vegetable edible oil of high-quality, is the significant technology issues that current this area needs solution badly.
Current gold Semen Brassicae campestris processing technology still utilizes traditional hot moulding technique to process, as squeezing-lixiviation process oil-producing technique in advance, steam stir-fry-oil extraction by pressing technique etc., because the high temperature of Semen Brassicae campestris green compact through the long period steams stir-fry in this kind of technique, and to squeeze out in advance crude oil through screw oil expeller at 110-120 DEG C, crude oil through coming unstuck, depickling, after removing impurities and dehydration, become edible level Four finished product rape oil, level Four rape oil after the refinings such as depickling, deodorization, decolouring, becomes refining oil again.These method of making oil are all liquefactions under high temperature high-moisture condition, cause the rapeseed oil of hot moulding gained and the color burn of grouts and quality declines, and easily destroy nutritive ingredient abundant in this kind of branded oil vegetable seed, the quality of the edible vegetable oil made is still not good, and prior art also has larger room for improvement.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method utilizing high oil content branded oil vegetable seed liquefaction under low temperature low moisture condition, to overcome the deficiencies in the prior art.
Technical scheme of the present invention is such: along with raising and the two low quality rape large scale application of the yellow seed of high oil content of rapeseed quality breeding level, rape oil length brings up to 45% from 38%, content of erucic acid oil is reduced to 1% from 30%, oleic acid content brings up to more than 60% from 35%, and in cake, protein content brings up to 40% from 35%.The present invention makes full use of this high oil content branded oil vegetable seed and carries out liquefaction, to obtain natural quality rapeseed dehulled oil.Processing step of the present invention is as follows:
(1) selection of high-quality feedstocks and buying:
Production high quality oils necessarily obtains high-quality feedstocks, the present invention uses the two low quality rape kind oil of the yellow seed of high oil content to grind serial achievement, comprise products such as " oil grind 57, oil grinds 817, oil grinds 818, oil grinds No. 10, oil grinds 50, good fortune oil 508 ", here the oil length of the Semen Brassicae campestris of raw material reaches 45%, content of erucic acid is less than 1%, glucosinolate content is less than 30 micromoles per gram, oleic acid content more than 60%.Select this kind of raw produce to carry out the plantation of big area industrialization order, produce high oil content, high-quality feedstocks, or directly this kind of raw produce of buying as technical scheme of the present invention raw material used.Produce or purchase the high-quality feedstocks come will dry in time, moisture is dropped to 8-10%, and preliminary sorting and screening.The Semen Brassicae campestris that order is produced wants singles, single receipts, single Tibetan, prevents variet complexity.Before buying, sampling analysis rapeseed quality and quality, set up Semen Brassicae campestris lot number.
(2) cleaning of high oil content quality rape and selecting technique:
Select in the raw material of warehouse-in and high oil content branded oil vegetable seed, to contain the serial impurity such as the seed that goes rotten, raw seedling seed, ash content, earth, sandstone, irony, need to remove.The present invention selects 5XC-5A type purification of seeds car, 5XJC-5A type seed choice wheel, stone remover etc., Semen Brassicae campestris is carried out selection by winnowing, de-stone and selected, remove the ash content in Semen Brassicae campestris, earth, sandstone, irony, fine grain, go rotten the serial impurity such as seed, raw seedling seed.
(3) the modified technology of cryodrying:
The moisture content of raw material that the present invention selects is higher, and general moisture content reaches 9-12%, and Semen Brassicae campestris moisture content is high, not only easily generates heat, lumps, goes mouldy, not easily safe storage, also has a strong impact on the natural rapeseed oil quality of high-quality pure and quality.Branded oil vegetable seed moisture, after material storage, in 2-3 days, is reduced to 6-7% by the present invention under cryogenic.Specific practice is, screening low-temperature grain drying machine, and under 50-55 DEG C of cold condition, carry out oven drying at low temperature modified, is reduced to 6-7%, by modified 8 hours, obtains the branded oil vegetable seed with natural fruit fragrance by slowly modified for moisture.Semen Brassicae campestris removes moisture by the modified drying of low temperature, not only can safe storage, also increases the natural fruit fragrance of rapeseed oil, improves quality and the quality of rapeseed oil; Go back passivation sulphur glucoside enzyme, lipoxygenase simultaneously, significantly improve vegetable seed oil oxidation stability; Improve the content of the natural radioactivity functions such as vitamin-E, polyphenol, sterol and polyphenol from rapeseed in rapeseed oil.
(4) high oil content high-quality seed decortication and separation of hull and kernel technology:
High oil content branded oil vegetable seed belongs to the higher oil plant of oil-containing, particle is less, be made up of seed coat and embryo, high oil content branded oil vegetable seed contains the seed coat of 14-15%, and seed coat main component is the materials such as moisture, protein, crude fat, insoluble dietary fibre, tannin, pigment sinapic acid choline ester.The rapeseed peeling of employing of the present invention and Wuhan grain farmer Mechanical Equipment Company combination producing and separation of hull and kernel system device, utilize the principle of roller pair breaking, vibration, screening, selection by winnowing, separation, modified for cryodrying good branded oil vegetable seed (moisture content 6-7%) is carried out peeling and separation of hull and kernel, obtains high-quality, pure, golden yellow rapeseed dehulled.Decortication and disposable peeling rate >=90% of separation of hull and kernel technology, go out skin rate 9-10%, kernel percent 90-91%, kernel-containing rate 1-2% in skin, skin-containing rate 4-6% in benevolence.By rapeseed peeling and separation of hull and kernel, remove a large amount of robust fibre, pigment and tannin, cake protein matter content can be significantly improved and improve grouts color and luster, improve feeding tiring, greatly improve quality of crude oil and quality simultaneously, reduce tradition processing crude oil refining cost, reduce equipment attrition simultaneously, reduce power consumption of polymer processing.
(5) the modified technology of low temperature
The modified technology of high oil content branded oil vegetable seed low temperature, the adjustment of moisture is carried out before exactly the rapeseed dehulled after decortication being entered squeezing, temperature controls under the lower temperature conditions of 10-30 DEG C, is applicable to squeezing the requirement of getting oil to make squeezing rapeseed dehulled, improves oil yield and goes out oil quality.The modified of rapeseed dehulled is the moistening process of moisture under a cold condition in fact, allows rapeseed dehulled uniform pickup moisture, absorbing proteins moisture in rapeseed dehulled is expanded and softening, reduces the avidity between grease molecules and protein, is conducive to rapeseed dehulled squeezing.The present invention adopts associating Wuhan grain farmer Mechanical Equipment Company to manufacture and produces " constant temperature and pressure constant flow system quality controling machine ", at quality controling machine opening for feed, vaporific moisture is added to rapeseed dehulled, even sprinkling stirring and evenly mixing, the moisture of about 2% is called according to rapeseed dehulled quality, make rapeseed dehulled uniform water absorption modified, moisture content is modified to 8-9% by modified front 6-7%.Also by the modified situation of hand valuation rapeseed dehulled, firm modified good rapeseed dehulled is pinched with strength with hand, rapeseed dehulled just in time can be pinched shaping, rapeseed dehulled of loosing one's grip just in time can scatter, this is modified good phenomenon, modified good rapeseed dehulled completed low temperature pressing within 1-2 hour, and it is fuel-displaced effective that modified technology has controlled squeezing, and rapeseed oil quality might as well.
The modified technology of low temperature also adopts Temperature Control Type hot-water cylinder for temperature technique, and temperature is lower than under 10 DEG C of conditions in the winter time, quality rape material temperature is adjusted to about 20 DEG C and carries out modified, is conducive to improving oil yield.
The modified technology temperature of low temperature controls at 10-30 DEG C, keep the relative stability of protein molecule and phospholipid molecule in high oil content high-quality rapeseed dehulled, prevent phospholipid molecule from entering in expressing process in rapeseed oil, effectively control the phospholipids content in high-quality rapeseed dehulled oil, the modified high-quality rapeseed oil produced of low temperature is qualified 280 DEG C of heat tests, the non-foaming foam of edible heating, reduces dephosphorization operation.
(6) low temperature pressing technology
Low temperature pressing technology is exactly that modified good rapeseed dehulled is carried out pure physical squeezing at low-temperature condition (i.e. cold conditions), and raw material and press apparatus, without any heating heat treatment, ensure the pure physics natural character of cold conditions of high oil content quality rape benevolence material and equipment.Employing low temperature pressing technology eliminates strip plate, steaming stir-fry operation in traditional technology, and oil press zhai heating process, significantly reduces rapeseed Processing energy consumption.Rapeseed dehulled cold pressing, oil quality is better than traditional hot moulding crude oil greatly, without the need to refining and edible, is natural green food technique; During cold pressing, material is in lesser temps, and protein Available Amino Acids destructiveness is little, and particularly in grouts, limiting amino acid almost retains completely, improves the nutrition balance of grouts.The present invention uses SSYZ-50A duplex low-temperature oil expeller to carry out single pressing and twice pressing (squeezing continuously), the present invention adopts twin-screw press to have higher compression ratio and powerful force of compression makes squeezing more thorough, there is retrograde rotation, engage each other, the centering of outstanding axle, material from features such as cleaning function are powerful, be applicable to modified rapeseed dehulled low temperature cold conditions temperature and pressure and squeeze.Use SSYZ-50A duplex low-temperature oil expeller to carry out single pressing and twice pressing, obtain pure natural crude rapeseed oil, crude oil after filtration essence obtains natural quality rapeseed oil after filtering.Top temperature in low temperature pressing Technology twin-screw press squeezing cage is lower than 50 DEG C, and cake output temperature is lower than 50 DEG C, and fuel-displaced comprehensive oil temperature is lower than 40 DEG C; The two low branded oil vegetable seed of the yellow seed of high oil content is by after single pressing, and continuous quadratic, by squeezing, improves oil yield, reduces residual oil content in cake, oil yield 28-30%, cake yield about 60%, residual oil content 10-12% in cake.
(7) pure physical filtering essence filter technology
The two low branded oil vegetable seed of the yellow seed of high oil content through cleaning, the Technology such as selected, cryodrying is modified, decortication and separation of hull and kernel, low temperature are modified, low temperature pressing, the pure natural crude rapeseed oil obtained, crude oil is through stainless steel blade pure physical filtering machine coarse filtration, 5-8 hour is filtered again through the pure physical filtering machine of sheet frame, again will through the filter of cloth bag type pure physics fine filting machine essence, obtain natural quality rapeseed dehulled oil, rapeseed dehulled oil colours pool is natural golden yellow bright, smell delicate fragrance is pure, free from extraneous odour.Detect through product quality supervision and inspection institute of Guizhou Province and analyze: the quality index such as color and luster, smell, flavour, transparency, moisture and volatile matter content, insoluble impurities, acid number, peroxide value, benzopyrene, aflatoxin and sanitary index all meet national GB1536-2004 " rapeseed oil " and squeeze standard, no solvent residue; Analyze through Ministry of Agriculture's oil plant and quality of item supervision and inspection center: the micro substance such as rich in vitamin E, plant sterol.
The beneficial effect that technical solution of the present invention is brought:
The present invention be directed to high oil content quality rape, under the pure physical technology technical qualification of low temperature low moisture, obtain the high-end high-quality grease of high-quality pure natural, compared with the leaching oil showed commercially, hot pressed oil, the rapeseed oil that the present invention obtains is natural, clarification, golden yellow color are transparent, is rich in natural VE and plant sterol; Improve protein content in cake simultaneously, ensure that the biological activity of protein in the dish dregs of rice; Power consumption is few, reduces costs, and contamination-free produces.The present invention meets the high-quality edible oil standard of green, natural, healthy, nutrition completely, meets modern fats and oils processing safety, environmental protection, pollution-free.
The key point of technical solution of the present invention:
The key point of technical solution of the present invention have following some: one is that the industrialization order of high oil content quality rape is produced and buying; Two is the modified technology of cryodrying, and whole modified drying process temperature is no more than 60 DEG C, by Semen Brassicae campestris Moisture condition to 6-7% low moisture state, is conducive to the storage of Semen Brassicae campestris, increases natural fruit fragrance, is convenient to rapeseed peeling; Three is decortication and separation of hull and kernel technology, effectively can remove the colors in skin; Four is the modified technology of low temperature, prevents the generation of phosphatide in high-quality rapeseed dehulled oil, improves quality and the oil yield of oil; Five is low temperature pressing technology, by a twice pressing, provides oil yield, improves and oil quality, and gained oil is without refining, and power consumption is few, cost-saving; Six is pure physical filtering technology, and effectively remove the suspended substance in oil, the breaking of oil obtained is transparent, golden yellow color, not containing solvent, without any interpolation.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
embodiment 1:
Grind the high oil content branded oil vegetable seed of 817 rape variety outputs according to method liquefaction of the present invention with the oil that Guizhou Oilseed Rape Institute works out, step is as follows:
(1) raw material is carried out solarization dry-cure, moisture is dropped to 8%, and preliminary sorting and screening.
(2) Semen Brassicae campestris is carried out selection by winnowing, de-stone and selected process, remove the impurity in Semen Brassicae campestris.
(3) carry out cryodrying modified: after purchasing of raw materials warehouse-in the 2nd day, under 50-55 DEG C of cold condition, oven drying at low temperature carries out to Semen Brassicae campestris with low-temperature grain drying machine modified, be reduced to 6% by slowly modified for moisture; Cryodrying conditioning period is 5 hours.
(4) decortication of high oil content high-quality seed and separation of hull and kernel is carried out: utilize roller pair breaking, vibration, screening, selection by winnowing, the principle that is separated by separating device, modified for cryodrying good branded oil vegetable seed is carried out peeling and separation of hull and kernel, obtains high-quality, pure, golden yellow rapeseed dehulled.
(5) low temperature is carried out modified: under the condition of temperature 24-30 DEG C, at quality controling machine opening for feed, vaporific moisture is added to rapeseed dehulled, evenly spray stirring and evenly mixing, call in the moisture of rapeseed dehulled 2% according to mass fraction, make rapeseed dehulled uniform water absorption modified, moisture content is by modified front 6% modified to 8%.
(6) low temperature pressing is carried out: carry out pure physics single pressing and twice pressing acquisition pure natural crude rapeseed oil by duplex low-temperature oil expeller at low-temperature condition.
(7) filter of pure physical filtering essence is carried out: the pure natural crude rapeseed oil obtained by low temperature pressing is through stainless steel blade pure physical filtering machine coarse filtration, 5 hours are filtered again through the pure physical filtering machine of sheet frame, again through the filter of cloth bag type pure physics fine filting machine essence, obtain natural quality rapeseed dehulled oil.
embodiment 2:
Grind the high oil content branded oil vegetable seed of No. 10 rape variety outputs according to method liquefaction of the present invention with the oil that Guizhou Oilseed Rape Institute works out, step is as follows:
(1) raw material is carried out solarization dry-cure, moisture is dropped to 10%, and preliminary sorting and screening.
(2) Semen Brassicae campestris is carried out selection by winnowing, de-stone and selected process, remove the impurity in Semen Brassicae campestris.
(3) carry out cryodrying modified: at the 3rd day after purchasing of raw materials warehouse-in, under 45-50 DEG C of cold condition, oven drying at low temperature carries out to Semen Brassicae campestris with low-temperature grain drying machine modified, be reduced to 7% by slowly modified for moisture; Cryodrying conditioning period is 7 hours.
(4) decortication of high oil content high-quality seed and separation of hull and kernel is carried out: utilize roller pair breaking, vibration, screening, selection by winnowing, the principle that is separated by separating device, modified for cryodrying good branded oil vegetable seed is carried out peeling and separation of hull and kernel, obtains high-quality, pure, golden yellow rapeseed dehulled.
(5) carry out low temperature modified: adopt Temperature Control Type hot-water cylinder for temperature technique, under temperature 1-5 DEG C in the winter time (lower than 10 DEG C) condition, quality rape material temperature is adjusted to about 20 DEG C and carries out modified, be conducive to improving oil yield.
(6) low temperature pressing is carried out: carry out pure physics single pressing and twice pressing acquisition pure natural crude rapeseed oil by duplex low-temperature oil expeller at low-temperature condition.
(7) filter of pure physical filtering essence is carried out: the pure natural crude rapeseed oil obtained by low temperature pressing is through stainless steel blade pure physical filtering machine coarse filtration, 6 hours are filtered again through the pure physical filtering machine of sheet frame, again through the filter of cloth bag type pure physics fine filting machine essence, obtain natural quality rapeseed dehulled oil.
embodiment 3:
Grind the high oil content branded oil vegetable seed of 50 rape variety outputs according to method liquefaction of the present invention with the oil that Guizhou Oilseed Rape Institute works out, step is as follows:
(1) raw material is carried out solarization dry-cure, moisture is dropped to 11%, and preliminary sorting and screening.
(2) Semen Brassicae campestris is carried out selection by winnowing, de-stone and selected process, remove the impurity in Semen Brassicae campestris.
(3) carry out cryodrying modified: after purchasing of raw materials warehouse-in the 2nd day, under 50-55 DEG C of cold condition, oven drying at low temperature carries out to Semen Brassicae campestris with low-temperature grain drying machine modified, be reduced to 7% by slowly modified for moisture; Cryodrying conditioning period is 9 hours.
(4) decortication of high oil content high-quality seed and separation of hull and kernel is carried out: utilize roller pair breaking, vibration, screening, selection by winnowing, the principle that is separated by separating device, modified for cryodrying good branded oil vegetable seed is carried out peeling and separation of hull and kernel, obtains high-quality, pure, golden yellow rapeseed dehulled.
(5) low temperature is carried out modified: under the early winter condition of temperature 10-14 DEG C, at quality controling machine opening for feed, vaporific moisture is added to rapeseed dehulled, evenly spray stirring and evenly mixing, call in the moisture of rapeseed dehulled 2% according to mass fraction, make rapeseed dehulled uniform water absorption modified, moisture content is by modified front 7% modified to 9%.
(6) low temperature pressing is carried out: carry out pure physics single pressing and twice pressing acquisition pure natural crude rapeseed oil by duplex low-temperature oil expeller at low-temperature condition.
(7) filter of pure physical filtering essence is carried out: the pure natural crude rapeseed oil obtained by low temperature pressing is through stainless steel blade pure physical filtering machine coarse filtration, 8 hours are filtered again through the pure physical filtering machine of sheet frame, again through the filter of cloth bag type pure physics fine filting machine essence, obtain natural quality rapeseed dehulled oil.
embodiment 4:
The high oil content branded oil vegetable seed of the good fortune oil 508 rape variety outputs worked out with Guizhou Oilseed Rape Institute is according to method liquefaction of the present invention, and step is as follows:
(1) raw material is carried out solarization dry-cure, moisture is dropped to 9%, and preliminary sorting and screening.
(2) Semen Brassicae campestris is carried out selection by winnowing, de-stone and selected process, remove the impurity in Semen Brassicae campestris.
(3) carry out cryodrying modified: after purchasing of raw materials warehouse-in the 4th day, under 50-55 DEG C of cold condition, oven drying at low temperature carries out to Semen Brassicae campestris with low-temperature grain drying machine modified, be reduced to 6% by slowly modified for moisture; Cryodrying conditioning period is 8 hours.
(4) decortication of high oil content high-quality seed and separation of hull and kernel is carried out: utilize roller pair breaking, vibration, screening, selection by winnowing, the principle that is separated by separating device, modified for cryodrying good branded oil vegetable seed is carried out peeling and separation of hull and kernel, obtains high-quality, pure, golden yellow rapeseed dehulled.
(5) low temperature is carried out modified: in the fall under the condition of temperature 17-22 DEG C, at quality controling machine opening for feed, vaporific moisture is added to rapeseed dehulled, evenly spray stirring and evenly mixing, call in the moisture of rapeseed dehulled 2% according to mass fraction, make rapeseed dehulled uniform water absorption modified, moisture content is by modified front 6% modified to 8%.
(6) low temperature pressing is carried out: carry out pure physics single pressing and twice pressing acquisition pure natural crude rapeseed oil by duplex low-temperature oil expeller at low-temperature condition.
(7) filter of pure physical filtering essence is carried out: the pure natural crude rapeseed oil obtained by low temperature pressing is through stainless steel blade pure physical filtering machine coarse filtration, 6 hours are filtered again through the pure physical filtering machine of sheet frame, again through the filter of cloth bag type pure physics fine filting machine essence, obtain natural quality rapeseed dehulled oil.
Certainly, more than just embody rule example of the present invention, the technical scheme that the present invention also has other embodiment, all employings to be equal to replacement or equivalent transformation to be formed, all drops within protection domain of the presently claimed invention.
Claims (9)
1. utilize a method for high oil content branded oil vegetable seed liquefaction under low temperature low moisture condition, it is characterized in that the method comprises the following steps: the cleaning of material choice, raw material and selected, cryodrying is modified, rapeseed peeling and separation of hull and kernel, low temperature are modified, low temperature pressing, pure physical filtering essence is filtered.
2. the method utilizing high oil content branded oil vegetable seed liquefaction under low temperature low moisture condition according to claim 1, it is characterized in that: described material choice selects oil length 45%, content of erucic acid is less than 1%, glucosinolate content is less than 30 micromoles per gram, the high oil content of oleic acid content more than 60%, high quality oils vegetable seed, raw material is carried out solarization dry-cure, moisture is dropped to 8-10%, and preliminary sorting and screening.
3. the method utilizing high oil content branded oil vegetable seed liquefaction under low temperature low moisture condition according to claim 1, is characterized in that: the cleaning of described raw material and selected be that Semen Brassicae campestris is carried out selection by winnowing, de-stone and selected process, remove the impurity in Semen Brassicae campestris.
4. the method utilizing high oil content branded oil vegetable seed liquefaction under low temperature low moisture condition according to claim 1, it is characterized in that: described cryodrying is modified be the purchasing of raw materials warehouse-in after in 2-3 days, under 50-55 DEG C of cold condition, oven drying at low temperature carries out to Semen Brassicae campestris with low-temperature grain drying machine modified, be reduced to 6-7% by slowly modified for moisture; Cryodrying conditioning period is 8 hours.
5. the method utilizing high oil content branded oil vegetable seed liquefaction under low temperature low moisture condition according to claim 1, it is characterized in that: described rapeseed peeling and separation of hull and kernel utilize roller pair breaking, vibration, screening, selection by winnowing, the principle that is separated by separating device, modified for cryodrying good branded oil vegetable seed is carried out peeling and separation of hull and kernel, obtains high-quality, pure, golden yellow rapeseed dehulled.
6. the method utilizing high oil content branded oil vegetable seed liquefaction under low temperature low moisture condition according to claim 1, it is characterized in that: described low temperature is modified is the temperature range that refining temperature controls at 10-30 DEG C, at quality controling machine opening for feed, vaporific moisture is added to rapeseed dehulled, even sprinkling stirring and evenly mixing, the moisture of rapeseed dehulled 2% is called according to mass fraction, make rapeseed dehulled uniform water absorption modified, moisture content is modified to 8-9% by modified front 6-7%.
7. the method utilizing high oil content branded oil vegetable seed liquefaction under low temperature low moisture condition according to claim 1, is characterized in that: described low temperature pressing carries out pure physics single pressing and twice pressing acquisition pure natural crude rapeseed oil by duplex low-temperature oil expeller at low-temperature condition; At low temperature pressing process Raw and press apparatus without any heating heat treatment, twin-screw press squeezes top temperature in cage lower than 50 DEG C, and cake output temperature is lower than 50 DEG C, and fuel-displaced comprehensive oil temperature is lower than 40 DEG C.
8. the method utilizing high oil content branded oil vegetable seed liquefaction under low temperature low moisture condition according to claim 7, it is characterized in that: the filter of described pure physical filtering essence is through stainless steel blade pure physical filtering machine coarse filtration by the pure natural crude rapeseed oil of low temperature pressing acquisition, 5-8 hour is filtered again through the pure physical filtering machine of sheet frame, again through the filter of cloth bag type pure physics fine filting machine essence, obtain natural quality rapeseed dehulled oil.
9. the method utilizing high oil content branded oil vegetable seed liquefaction under low temperature low moisture condition according to claim 6, it is characterized in that: the modified Temperature Control Type hot-water cylinder that also adopts of described low temperature is for temperature technique, temperature is lower than under 10 DEG C of conditions in the winter time, quality rape material temperature is adjusted to about 20 DEG C to carry out modified, is conducive to improving oil yield.
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