CN104804866A - Preparation method of rapeseed oil - Google Patents
Preparation method of rapeseed oil Download PDFInfo
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- CN104804866A CN104804866A CN201510180606.2A CN201510180606A CN104804866A CN 104804866 A CN104804866 A CN 104804866A CN 201510180606 A CN201510180606 A CN 201510180606A CN 104804866 A CN104804866 A CN 104804866A
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- oil
- vegetable seed
- rapeseed
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- crude oil
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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
- C11B1/10—Production of fats or fatty oils from raw materials by extracting
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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
-
- 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
Abstract
The invention discloses a preparation method of rapeseed oil and belongs to the technical field of oil processing. The preparation method comprises the steps as follows: firstly, rapeseed is cleaned, the rapeseed covered with water after cleaning is fried directly in a rapeseed frying process with a sectional type gradual cooling method, and the fried rapeseed is ground to obtain preliminary ground crude oil and rapeseed residues; the granularity and moisture of the rapeseed residues are adjusted, then the rapeseed residues are fed into an agitation tank for leaching, and leached crude oil and rapeseed residues are obtained; the preliminary ground crude oil and the leached crude oil are mixed to obtain mixed crude oil; the mixed crude oil is refined to obtain finished rapeseed oil. The rapeseed oil leaching efficiency is high after processing with the preparation method, the inherent flavor, aroma and nutrient substances of the rapeseed oil are kept, and the prepared rapeseed oil is pure and higher in quality.
Description
Technical field
The present invention relates to edible oil processing technique field, specifically, relate to a kind of preparation method of rapeseed oil.
Background technology
Rapeseed oil is commonly called as rape oil, and also referred to as rape seed oil, its taste is sweet, pungent, warm in nature, can moisturize desinsection, loose erysipelas, detumescence poison.Human body is very high to the specific absorption of rapeseed oil, can reach 99%.The nutritive ingredients such as unsaturated fatty acids and vitamin-E such as the linolic acid therefore contained by it can be absorbed by body well, the effect have certain vessel softening, delaying senility.Raw material due to oil expression is that the kind of plant is real, generally can contain certain seed phosphatide, very important to the growth of blood vessel, nerve, brain.The cholesterol level of rapeseed oil seldom or hardly contains, so the people controlling cholesterol intake can relievedly eat.
Conventional fundamentals technique is as follows: (1) is cleaned: before cleaning, be first placed in bamboo large bamboo or wicker basket by vegetable seed, tramp with one's feet broken mud shoulder to shoulder (clod) wherein, then screens, the grey foreign material in removing vegetable seed and inclusion; (2) seed is fried: be frying in the frying pan of 115 ~ 130 DEG C in temperature by the vegetable seed after cleaning; (3) extract oil: the vegetable seed after frying is placed on squeezing in squeezing machine and obtains rapeseed oil.The oil yield of this technique is lower, and owing to there is no refinery practice, the rapeseed oil inferior quality of acquisition.Traditional high temperature pre-pressing extraction technology, oil yield is lower, and containing peculiar smell in oil, and cost is higher, in leaching operation, with the addition of leaching agent, pollution can be brought to environment, in dedoping step, carry out removal of impurities at relatively high temperatures, the part nutritive ingredient in grease is destroyed, reduces the quality of grease.
As, the making method of application number a kind of rapeseed oil disclosed in 201410091411.6, it, after being cleaned by vegetable seed, vegetable seed is carried out broken shell, then frying, then extract oil with oil press zhai.The oil gas bubble that this technique is squeezed out next is few, but oil yield is lower, and owing to there is no refinery practice, the rapeseed oil inferior quality of acquisition.
Summary of the invention
In view of this, the object of this invention is to provide a kind of preparation method of rapeseed oil, to solve the technical problems such as the high and quality of low, the dense insufficient fragrance of oil yield, cost that existing complete processing exists is lower.
The present invention solves the problems of the technologies described above by the following method:
A preparation method for rapeseed oil, comprises the following steps:
(1) clean: the grey the foreign material first removing of vegetable seed windmill being lighter than vegetable seed, then sieve by thickness, removing is greater than and is less than the foreign material of vegetable seed respectively, then vegetable seed is put into water, gently rub 5 ~ 10min with have gentle hands, removing overlays on the mud on vegetable seed surface, then is pulled out by vegetable seed;
(2) seed is fried: the vegetable seed pulled out is put into jacketed kettle, controlling just to fry temperature is 150 ~ 200 DEG C, time is 20 ~ 30min, then temperature is adjusted to 100 ~ 120 DEG C, after frying 15 ~ 25min, temperature is adjusted to 80 ~ 100 DEG C, the moisture content of frying to vegetable seed is 8 ~ 12%, can take the dish out of the pot;
(3) grind: sent in shredder by vegetable seed after frying, add water and grind, the consumption of water is 30 ~ 40% of vegetable seed weight, and in water, add the salt of the water yield 0.4 ~ 0.6%, after passing into ozone 30 ~ 40min, carry out profit layering, obtain preliminary grinding crude oil and vegetable seed slag;
(4) leach: vegetable seed slag and normal hexane are sent in leacher according to certain mass ratio, when temperature be 56 ~ 65 DEG C, rotating speed carry out when being 100 ~ 120 turns/min leaching process, treatment time is 30 ~ 40min, then spray infiltration is carried out, obtain mixing oil and rapeseed meal, mixing oil is sent in vaporizer, evaporation process 40 ~ 60min at the temperature of 90 ~ 95 DEG C, again mixing oil is proceeded in stripping tower, temperature be 115 ~ 125 DEG C, pressure is 0.2 ~ 0.3kg/cm
2condition under stripping process 20 ~ 30min, obtain Extractive crudeoil;
(5) refining: preliminary grinding crude oil and Extractive crudeoil are mixed to get mixing crude oil, carries out refining by mixing crude oil and obtains finished product rapeseed oil.
In described step (2), when frying seed, controlling just to fry temperature is 180 DEG C, and the time is 25min, then temperature is adjusted to 110 DEG C, after frying 20min, temperature is adjusted to 90 DEG C, and the moisture content of frying to vegetable seed is 10%, can take the dish out of the pot.
In described step (2), when frying seed, be by cleaning in step (1) after vegetable seed first dry at the temperature of 70 ~ 80 DEG C to moisture content be 20 ~ 30%, and then vegetable seed is sent in microwave oscillator, be that under the condition of 600 ~ 800W, drying treatment to the moisture content of vegetable seed is 8 ~ 12% at microwave power.
In described step (2), when frying seed, be by cleaning in step (1) after vegetable seed first dry at the temperature of 75 DEG C to moisture content be 25%, and then vegetable seed is sent in microwave oscillator, be that under the condition of 700W, drying treatment to the moisture content of vegetable seed is 10% at microwave power.
In described step (3), add camellia seed kernels and maize germ grinds together in vegetable seed, the camellia seed kernels wherein added and the gross weight of maize germ are 2 ~ 5% of vegetable seed weight.
Described camellia seed kernels and the moisture content of maize germ are 6 ~ 10%.
In described step (4), the mass ratio of vegetable seed slag and normal hexane is 1:0.2 ~ 0.4.
Add water in described rapeseed meal, salt and yeast ferment, the temperature of fermentation is 25 ~ 30 DEG C, and fermentation time is 2 ~ 3 days, and tunning is used as feed, and in rapeseed meal, water, salt and saccharomycetic weight ratio be 100:10 ~ 20:1 ~ 3:2 ~ 3.
Described refining comprises aquation, comes unstuck, decolours, deodorization and filtration, aquation: the water adding its weight 20 ~ 25% in rapeseed oil mixing crude oil carries out aquation, and churning time is after 40 ~ 45min, and filtering separation is except anhydrating; Come unstuck: the degumming agent adding its weight 1 ~ 2% in mixing crude oil, usually time 15 ~ 20min, stirs, and rotating speed is 60 turns/hour; Decolouring: be put in bleacher by rapeseed oil mixing crude oil and decolour, adopts activated carbon decolorizing, and the consumption of gac is 2 ~ 4% of mixing crude oil amount; Deodorization: rapeseed oil mixing crude oil is placed on deodorization at the temperature of 200 ~ 220 DEG C, the time is 50 ~ 60min; Filter: add in rapeseed oil mixing crude oil using perlite as filtering medium, filter at the temperature of 20 ~ 40 DEG C, perlitic add-on is 1.2 ~ 2% of mixing crude oil weight, and the oil filtering gained is rapeseed oil finished product.
Described degumming agent is polynite 70 ~ 74%, water glass 18 ~ 20%, poly carboxylic acid 3 ~ 5%, citric acid 10 ~ 20% and perlite 1 ~ 2% are prepared from.
Beneficial effect of the present invention is:
(1) the present invention is by the process of cleaning, cleans, and gently rub with have gentle hands with water, and removed by the dirt on vegetable seed surface thoroughly, ensure that the rapeseed oil of follow-up preparation is pure, the quality of rapeseed oil improves further.
(2) vegetable seed after cleaning is pulled out rear being directly put in jacketed kettle and is carried out frying by the present invention, because the surface of vegetable seed is awash, is conducive to being heated evenly of vegetable seed, and is conducive to the amount of cure controlling vegetable seed, is conducive to the oil yield improving follow-up vegetable seed.
(3) the present invention carries out microwave low-temperature vacuum drying by the vegetable seed after cleaning, microwave oscillation is adopted to destroy the film of oil droplet outer layer covers in vegetable seed, greatly promote the stripping of oil droplet, improve the oil yield of vegetable seed, meanwhile, at lower vacuum state, drying temperature is controlled in lower temperature, be conducive to reducing content of erucic acid that high temperature and oxygen causes to improve and the increase of anti-nutrition component glucosinolate content, the difficulty of reduction subsequent fine sweetening process.
(4) the present invention combines with extract technology by adopting watermill process, and not only effectively ensure that the oil yield of rapeseed oil, and ensure that the pure of rapeseed oil, without any pollution, the quality of rapeseed oil is higher.
(5) the present invention is by by after the materials such as rapeseed meal employing fermentation removing anti-nutrition component sulphur glucoside, is recycled and is used as feeding after feed mixes with corn etc. livestock, obtain significant economic benefit.
(6) the present invention by adding camellia seed kernels and maize germ in the process of lapping of vegetable seed, vegetable seed can not only be delayed and be polished the time that machine extrudes, what vegetable seed was polished is more thorough, improve oil yield, and containing valuable nutritive ingredient in camellia seed kernels and maize germ, edible oil quality camellia seed kernels, maize germ and vegetable seed mixed grinding obtained is better, rich in nutrition content, has healthy opsonization.
(7) vegetable seed mixing crude oil is carried out refining by the present invention, the various parameter of strict control in refining process, and the degumming agent adopting polynite, water glass, poly carboxylic acid, citric acid and perlite to be prepared from Degumming Procedures comes unstuck, effectively reduce the phospholipids content in rapeseed oil, be only about 55mg/kg, and remain the intrinsic local flavor of rapeseed oil, fragrance and nutritive substance to greatest extent.
Embodiment
Conveniently those skilled in the art will recognize that the present invention will be further described below in conjunction with embodiment.Embodiment is only illustrating this invention, is not limitation of the invention, and the step not doing in embodiment to illustrate is all prior arts, is not described in detail at this.
Embodiment one
A preparation method for rapeseed oil, comprises the following steps:
(1) clean: the grey the foreign material first removing of vegetable seed windmill being lighter than vegetable seed, then sieve by thickness, removing is greater than and is less than the foreign material of vegetable seed respectively, then vegetable seed is put into water, gently rub 5min with have gentle hands, removing overlays on the mud on vegetable seed surface, then is pulled out by vegetable seed;
(2) fry seed: the vegetable seed pulled out is put into jacketed kettle, controlling just to fry temperature is 150 DEG C, and the time is 30min, then temperature is adjusted to 100 DEG C, after frying 25min, temperature is adjusted to 80 DEG C, and the moisture content of frying to vegetable seed is 8%, can take the dish out of the pot;
(3) grind: sent in shredder by vegetable seed after frying, add water and grind, the consumption of water is 30% of vegetable seed weight, and in water, add the salt of the water yield 0.4%, after passing into ozone 30min, carries out profit layering, obtain preliminary grinding crude oil and vegetable seed slag;
(4) leach: vegetable seed slag and normal hexane are sent in leacher according to the mass ratio of 1:0.2, when temperature be 56 DEG C, rotating speed carry out when being 100 turns/min leaching process, treatment time is 30min, then spray infiltration is carried out, obtain mixing oil and rapeseed meal, mixing oil is sent in vaporizer, evaporation process 40min at the temperature of 90 DEG C, again mixing oil is proceeded in stripping tower, temperature be 115 DEG C, pressure is 0.2kg/cm
2condition under stripping process 20min, obtain Extractive crudeoil;
(5) refining: preliminary grinding crude oil and Extractive crudeoil are mixed to get mixing crude oil, mixing crude oil is carried out refining and obtains finished product rapeseed oil, refining comprises aquation, comes unstuck, decolours, deodorization and filtration, aquation: the water adding its weight 20% in rapeseed oil mixing crude oil carries out aquation, after stirring 40min, filtering separation is except anhydrating; Come unstuck: the degumming agent adding its weight 1% in mixing crude oil, usually time 15min, stirs, and rotating speed is 60 turns/hour; Decolouring: be put in bleacher by rapeseed oil mixing crude oil and decolour, adopts activated carbon decolorizing, and the consumption of gac is 2% of mixing crude oil amount; Deodorization: rapeseed oil mixing crude oil is placed on deodorization at the temperature of 200 DEG C, the time is 50min; Filter: add in rapeseed oil mixing crude oil using perlite as filtering medium, filter at the temperature of 20 DEG C, perlitic add-on is 1.2% of mixing crude oil weight, and the oil filtering gained is rapeseed oil finished product.
Described degumming agent is polynite 70%, water glass 18%, poly carboxylic acid 3%, citric acid 10% and perlite 1% is prepared from.
Add water in described rapeseed meal, salt and yeast ferment, the temperature of fermentation is 25 DEG C, and fermentation time is 2 days, and wherein in rapeseed meal, water, salt and saccharomycetic weight ratio be 100:10:1:2, and tunning is used as feed.
Embodiment two
A preparation method for rapeseed oil, comprises the following steps:
(1) clean: the grey the foreign material first removing of vegetable seed windmill being lighter than vegetable seed, then sieve by thickness, removing is greater than and is less than the foreign material of vegetable seed respectively, then vegetable seed is put into water, gently rub 10min with have gentle hands, removing overlays on the mud on vegetable seed surface, then is pulled out by vegetable seed;
(2) fry seed: the vegetable seed pulled out is put into jacketed kettle, controlling just to fry temperature is 200 DEG C, and the time is 20min, then temperature is adjusted to 120 DEG C, after frying 15min, temperature is adjusted to 100 DEG C, and the moisture content of frying to vegetable seed is 12%, can take the dish out of the pot;
(3) grind: add after camellia seed kernels and maize germ mix in the vegetable seed after frying, add water and grind, the consumption of water is 40% of vegetable seed weight, and in water, add the salt of the water yield 0.6%, after passing into ozone 40min, carry out profit layering, obtain preliminary grinding crude oil and vegetable seed slag, the camellia seed kernels wherein added and the gross weight of maize germ are 2% of vegetable seed weight, and the moisture content of camellia seed kernels and maize germ is 10%;
(4) leach: vegetable seed slag and normal hexane are sent in leacher according to the mass ratio of 1:0.4, when temperature be 65 DEG C, rotating speed carry out when being 120 turns/min leaching process, treatment time is 40min, then spray infiltration is carried out, obtain mixing oil and rapeseed meal, mixing oil is sent in vaporizer, evaporation process 60min at the temperature of 95 DEG C, again mixing oil is proceeded in stripping tower, temperature be 125 DEG C, pressure is 0.3kg/cm
2condition under stripping process 30min, obtain Extractive crudeoil;
(5) refining: preliminary grinding crude oil and Extractive crudeoil are mixed to get mixing crude oil, mixing crude oil is carried out refining and obtains finished product rapeseed oil, described refining comprises aquation, comes unstuck, decolours, deodorization and filtration, aquation: the water adding its weight 25% in rapeseed oil mixing crude oil carries out aquation, churning time is after 45min, and filtering separation is except anhydrating; Come unstuck: the degumming agent adding its weight 2% in mixing crude oil, usually time 20min, stirs, and rotating speed is 60 turns/hour; Decolouring: be put in bleacher by rapeseed oil mixing crude oil and decolour, adopts activated carbon decolorizing, and the consumption of gac is 4% of mixing crude oil amount; Deodorization: rapeseed oil mixing crude oil is placed on deodorization at the temperature of 220 DEG C, the time is 60min; Filter: add in rapeseed oil mixing crude oil using perlite as filtering medium, filter at the temperature of 40 DEG C, perlitic add-on is 2% of mixing crude oil weight, and the oil filtering gained is rapeseed oil finished product.
Described degumming agent is polynite 74%, water glass 20%, poly carboxylic acid 5%, citric acid 20% and perlite 2% is prepared from.
Add water in described rapeseed meal, salt and yeast ferment, the temperature of fermentation is 30 DEG C, and fermentation time is 3 days, and tunning is used as feed, and in rapeseed meal, water, salt and saccharomycetic weight ratio be 100:20:3:3.
Embodiment three
A preparation method for rapeseed oil, comprises the following steps:
(1) clean: the grey the foreign material first removing of vegetable seed windmill being lighter than vegetable seed, then sieve by thickness, removing is greater than and is less than the foreign material of vegetable seed respectively, then vegetable seed is put into water, gently rub 8min with have gentle hands, removing overlays on the mud on vegetable seed surface, then is pulled out by vegetable seed;
(2) fry seed: the vegetable seed pulled out is put into jacketed kettle, controlling just to fry temperature is 180 DEG C, and the time is 25min, then temperature is adjusted to 110 DEG C, after frying 20min, temperature is adjusted to 90 DEG C, and the moisture content of frying to vegetable seed is 10%, can take the dish out of the pot;
(3) grind: add after camellia seed kernels and maize germ mix in the vegetable seed after frying, send in shredder, add water and grind, the consumption of water is 35% of vegetable seed weight, and in water, add the salt of the water yield 0.5%, after passing into ozone 35min, carry out profit layering, obtain preliminary grinding crude oil and vegetable seed slag, the camellia seed kernels wherein added and the gross weight of maize germ are 5% of vegetable seed weight, and described camellia seed kernels and the moisture content of maize germ are 6%;
(4) leach: vegetable seed slag and normal hexane are sent in leacher according to the mass ratio of 1:0.3, when temperature be 60 DEG C, rotating speed carry out when being 110 turns/min leaching process, treatment time is 35min, then spray infiltration is carried out, obtain mixing oil and rapeseed meal, mixing oil is sent in vaporizer, evaporation process 50min at the temperature of 92 DEG C, again mixing oil is proceeded in stripping tower, temperature be 120 DEG C, pressure is 0.3kg/cm
2condition under stripping process 25min, obtain Extractive crudeoil;
(5) refining: preliminary grinding crude oil and Extractive crudeoil are mixed to get mixing crude oil, mixing crude oil is carried out refining and obtains finished product rapeseed oil, described refining comprises aquation, comes unstuck, decolours, deodorization and filtration, aquation: the water adding its weight 22% in rapeseed oil mixing crude oil carries out aquation, churning time is after 42min, and filtering separation is except anhydrating; Come unstuck: the degumming agent adding its weight 1.5% in mixing crude oil, usually time 18min, stirs, and rotating speed is 60 turns/hour; Decolouring: be put in bleacher by rapeseed oil mixing crude oil and decolour, adopts activated carbon decolorizing, and the consumption of gac is 3% of mixing crude oil amount; Deodorization: rapeseed oil mixing crude oil is placed on deodorization at the temperature of 210 DEG C, the time is 55min; Filter: add in rapeseed oil mixing crude oil using perlite as filtering medium, filter at the temperature of 30 DEG C, perlitic add-on is 1.5% of mixing crude oil weight, and the oil filtering gained is rapeseed oil finished product.Described degumming agent is polynite 72%, water glass 19%, poly carboxylic acid 4%, citric acid 15% and perlite 1.5% is prepared from.
Add water in described rapeseed meal, salt and yeast ferment, the temperature of fermentation is 28 DEG C, and fermentation time is 2 days, and tunning is used as feed, and in rapeseed meal, water, salt and saccharomycetic weight ratio be 100:15:2:2.5.
Embodiment four
A preparation method for rapeseed oil, comprises the following steps:
(1) clean: the grey the foreign material first removing of vegetable seed windmill being lighter than vegetable seed, then sieve by thickness, removing is greater than and is less than the foreign material of vegetable seed respectively, then vegetable seed is put into water, gently rub 6min with have gentle hands, removing overlays on the mud on vegetable seed surface, then is pulled out by vegetable seed;
(2) fry seed: the vegetable seed after cleaning in step (1) is first dried at the temperature of 72 DEG C to moisture content be 22%, and then vegetable seed is sent in microwave oscillator, be that under the condition of 650W, drying treatment to the moisture content of vegetable seed is 9% at microwave power;
(3) grind: in vegetable seed, add camellia seed kernels and maize germ acquisition mixing raw material, the camellia seed kernels wherein added and the gross weight of maize germ are 3% of vegetable seed weight, mixing raw material is sent in shredder, add water and grind, the consumption of water is 32% of vegetable seed weight, and in water, add the salt of the water yield 0.5%, after passing into ozone 32min, carry out profit layering, obtain preliminary grinding crude oil and vegetable seed slag;
(4) leach: vegetable seed slag and normal hexane are sent in leacher according to the mass ratio of 1:0.3, when temperature be 63 DEG C, rotating speed carry out when being 100 turns/min leaching process, treatment time is 38min, then spray infiltration is carried out, obtain mixing oil and rapeseed meal, mixing oil is sent in vaporizer, evaporation process 55min at the temperature of 93 DEG C, again mixing oil is proceeded in stripping tower, temperature be 122 DEG C, pressure is 0.2kg/cm
2condition under stripping process 28min, obtain Extractive crudeoil;
(5) refining: preliminary grinding crude oil and Extractive crudeoil are mixed to get mixing crude oil, mixing crude oil is carried out refining and obtains finished product rapeseed oil, described refining comprises aquation, comes unstuck, decolours, deodorization and filtration, aquation: the water adding its weight 22% in rapeseed oil mixing crude oil carries out aquation, churning time is after 41min, and filtering separation is except anhydrating; Come unstuck: the degumming agent adding its weight 1% in mixing crude oil, usually time 16min, stirs, and rotating speed is 60 turns/hour; Decolouring: be put in bleacher by rapeseed oil mixing crude oil and decolour, adopts activated carbon decolorizing, and the consumption of gac is 2% of mixing crude oil amount; Deodorization: rapeseed oil mixing crude oil is placed on deodorization at the temperature of 205 DEG C, the time is 52min; Filter: add in rapeseed oil mixing crude oil using perlite as filtering medium, filter at the temperature of 25 DEG C, perlitic add-on is 1.4% of mixing crude oil weight, and the oil filtering gained is rapeseed oil finished product.
Described degumming agent is polynite 71%, water glass 18%, poly carboxylic acid 3%, citric acid 13% and perlite 1% is prepared from.
Add water in described rapeseed meal, salt and yeast ferment, the temperature of fermentation is 26 DEG C, and fermentation time is 2 days, and tunning is used as feed, and in rapeseed meal, water, salt and saccharomycetic weight ratio be 100:12:1:2.
Embodiment five
A preparation method for rapeseed oil, comprises the following steps:
(1) clean: the grey the foreign material first removing of vegetable seed windmill being lighter than vegetable seed, then sieve by thickness, removing is greater than and is less than the foreign material of vegetable seed respectively, then vegetable seed is put into water, gently rub 9min with have gentle hands, removing overlays on the mud on vegetable seed surface, then is pulled out by vegetable seed;
(2) fry seed: the vegetable seed after cleaning in step (1) is first dried at the temperature of 78 DEG C to moisture content be 28%, and then vegetable seed is sent in microwave oscillator, be that under the condition of 750W, drying treatment to the moisture content of vegetable seed is 11% at microwave power;
(3) grind: in vegetable seed, add camellia seed kernels and maize germ acquisition mixing raw material, the camellia seed kernels wherein added and the gross weight of maize germ are 4% of vegetable seed weight, mixing raw material is sent in shredder, add water and grind, the consumption of water is 39% of vegetable seed weight, and in water, add the salt of the water yield 0.6%, after passing into ozone 38min, carry out profit layering, obtain preliminary grinding crude oil and vegetable seed slag;
(4) leach: vegetable seed slag and normal hexane are sent in leacher according to the mass ratio of 1:0.2, when temperature be 58 DEG C, rotating speed carry out when being 120 turns/min leaching process, treatment time is 32min, then spray infiltration is carried out, obtain mixing oil and rapeseed meal, mixing oil is sent in vaporizer, evaporation process 45min at the temperature of 92 DEG C, again mixing oil is proceeded in stripping tower, temperature be 118 DEG C, pressure is 0.3kg/cm
2condition under stripping process 28min, obtain Extractive crudeoil;
(5) refining: preliminary grinding crude oil and Extractive crudeoil are mixed to get mixing crude oil, mixing crude oil is carried out refining and obtains finished product rapeseed oil, described refining comprises aquation, comes unstuck, decolours, deodorization and filtration, aquation: the water adding its weight 24% in rapeseed oil mixing crude oil carries out aquation, churning time is after 43min, and filtering separation is except anhydrating; Come unstuck: the degumming agent adding its weight 2% in mixing crude oil, usually time 18min, stirs, and rotating speed is 60 turns/hour; Decolouring: be put in bleacher by rapeseed oil mixing crude oil and decolour, adopts activated carbon decolorizing, and the consumption of gac is 4% of mixing crude oil amount; Deodorization: rapeseed oil mixing crude oil is placed on deodorization at the temperature of 215 DEG C, the time is 57min; Filter: add in rapeseed oil mixing crude oil using perlite as filtering medium, filter at the temperature of 35 DEG C, perlitic add-on is 1.7% of mixing crude oil weight, and the oil filtering gained is rapeseed oil finished product.
Described degumming agent is polynite 73%, water glass 20%, poly carboxylic acid 5%, citric acid 18% and perlite 1.6% is prepared from.
Add water in described rapeseed meal, salt and yeast ferment, the temperature of fermentation is 29 DEG C, and fermentation time is 3 days, and tunning is used as feed, and in rapeseed meal, water, salt and saccharomycetic weight ratio be 100:18:2:3.
Embodiment six
A preparation method for rapeseed oil, comprises the following steps:
(1) clean: the grey the foreign material first removing of vegetable seed windmill being lighter than vegetable seed, then sieve by thickness, removing is greater than and is less than the foreign material of vegetable seed respectively, then vegetable seed is put into water, gently rub 7min with have gentle hands, removing overlays on the mud on vegetable seed surface, then is pulled out by vegetable seed;
(2) fry seed: the vegetable seed after cleaning in step (1) is first dried at the temperature of 75 DEG C to moisture content be 25%, and then vegetable seed is sent in microwave oscillator, be that under the condition of 700W, drying treatment to the moisture content of vegetable seed is 10% at microwave power;
(3) grind: in vegetable seed, add camellia seed kernels and maize germ acquisition mixing raw material, the camellia seed kernels wherein added and the gross weight of maize germ are 3% of vegetable seed weight, mixing raw material is sent in shredder, add water and grind, the consumption of water is 36% of vegetable seed weight, and in water, add the salt of the water yield 0.5%, after passing into ozone 35min, carry out profit layering, obtain preliminary grinding crude oil and vegetable seed slag;
(4) leach: vegetable seed slag and normal hexane are sent in leacher according to the mass ratio of 1:0.2, when temperature be 57 DEG C, rotating speed carry out when being 120 turns/min leaching process, treatment time is 38min, then spray infiltration is carried out, obtain mixing oil and rapeseed meal, mixing oil is sent in vaporizer, evaporation process 48min at the temperature of 94 DEG C, again mixing oil is proceeded in stripping tower, temperature be 117 DEG C, pressure is 0.3kg/cm
2condition under stripping process 22min, obtain Extractive crudeoil;
(5) refining: preliminary grinding crude oil and Extractive crudeoil are mixed to get mixing crude oil, mixing crude oil is carried out refining and obtains finished product rapeseed oil, described refining comprises aquation, comes unstuck, decolours, deodorization and filtration, aquation: the water adding its weight 23% in rapeseed oil mixing crude oil carries out aquation, churning time is after 42min, and filtering separation is except anhydrating; Come unstuck: the degumming agent adding its weight 1.6% in mixing crude oil, usually time 17min, stirs, and rotating speed is 60 turns/hour; Decolouring: be put in bleacher by rapeseed oil mixing crude oil and decolour, adopts activated carbon decolorizing, and the consumption of gac is 3% of mixing crude oil amount; Deodorization: rapeseed oil mixing crude oil is placed on deodorization at the temperature of 210 DEG C, the time is 55min; Filter: add in rapeseed oil mixing crude oil using perlite as filtering medium, filter at the temperature of 30 DEG C, perlitic add-on is 1.6% of mixing crude oil weight, and the oil filtering gained is rapeseed oil finished product.
Described degumming agent is polynite 72%, water glass 19%, poly carboxylic acid 4%, citric acid 16% and perlite 1.5% is prepared from.
Add water in described rapeseed meal, salt and yeast ferment, the temperature of fermentation is 26 DEG C, and fermentation time is 3 days, and tunning is used as feed, and in rapeseed meal, water, salt and saccharomycetic weight ratio be 100:16:2:2.5.
The above, it is only better example of the present invention, not any pro forma restriction is done to the present invention, anyly do not depart from technical solution of the present invention content, the any simple modification done above example according to technical spirit of the present invention, coversion material equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a preparation method for rapeseed oil, is characterized in that, comprises the following steps:
(1) clean: the grey the foreign material first removing of vegetable seed windmill being lighter than vegetable seed, then sieve by thickness, removing is greater than and is less than the foreign material of vegetable seed respectively, then vegetable seed is put into water, gently rub 5 ~ 10min with have gentle hands, removing overlays on the mud on vegetable seed surface, then is pulled out by vegetable seed;
(2) seed is fried: the vegetable seed pulled out is put into jacketed kettle, controlling just to fry temperature is 150 ~ 200 DEG C, time is 20 ~ 30min, then temperature is adjusted to 100 ~ 120 DEG C, after frying 15 ~ 25min, temperature is adjusted to 80 ~ 100 DEG C, the moisture content of frying to vegetable seed is 8 ~ 12%, can take the dish out of the pot;
(3) grind: sent in shredder by vegetable seed after frying, add water and grind, the consumption of water is 30 ~ 40% of vegetable seed weight, and in water, add the salt of the water yield 0.4 ~ 0.6%, after passing into ozone 30 ~ 40min, carry out profit layering, obtain preliminary grinding crude oil and vegetable seed slag;
(4) leach: vegetable seed slag and normal hexane are sent in leacher according to certain mass ratio, when temperature be 56 ~ 65 DEG C, rotating speed carry out when being 100 ~ 120 turns/min leaching process, treatment time is 30 ~ 40min, then spray infiltration is carried out, obtain mixing oil and rapeseed meal, mixing oil is sent in vaporizer, evaporation process 40 ~ 60min at the temperature of 90 ~ 95 DEG C, again mixing oil is proceeded in stripping tower, temperature be 115 ~ 125 DEG C, pressure is 0.2 ~ 0.3kg/cm
2condition under stripping process 20 ~ 30min, obtain Extractive crudeoil;
(5) refining: preliminary grinding crude oil and Extractive crudeoil are mixed to get mixing crude oil, carries out refining by mixing crude oil and obtains finished product rapeseed oil.
2. the preparation method of rapeseed oil as claimed in claim 1, it is characterized in that, in described step (2), when frying seed, controlling just to fry temperature is 180 DEG C, time is 25min, then temperature is adjusted to 110 DEG C, after frying 20min, temperature is adjusted to 90 DEG C, stir-fry is 10% to the moisture content of vegetable seed, can take the dish out of the pot.
3. the preparation method of rapeseed oil as claimed in claim 1, it is characterized in that, in described step (2), when frying seed, be by cleaning in step (1) after vegetable seed first dry at the temperature of 70 ~ 80 DEG C to moisture content be 20 ~ 30%, and then vegetable seed is sent in microwave oscillator, be that under the condition of 600 ~ 800W, drying treatment to the moisture content of vegetable seed is 8 ~ 12% at microwave power.
4. the preparation method of the rapeseed oil as described in claim 1 or 3, it is characterized in that, in described step (2), when frying seed, be by cleaning in step (1) after vegetable seed first dry at the temperature of 75 DEG C to moisture content be 25%, and then vegetable seed is sent in microwave oscillator, be that under the condition of 700W, drying treatment to the moisture content of vegetable seed is 10% at microwave power.
5. the preparation method of rapeseed oil as claimed in claim 1, it is characterized in that, in described step (3), add camellia seed kernels and maize germ grinds together in vegetable seed, the camellia seed kernels wherein added and the gross weight of maize germ are 2 ~ 5% of vegetable seed weight.
6. the preparation method of rapeseed oil as claimed in claim 1, it is characterized in that, described camellia seed kernels and the moisture content of maize germ are 6 ~ 10%.
7. the preparation method of rapeseed oil as claimed in claim 1, it is characterized in that, in described step (4), the mass ratio of vegetable seed slag and normal hexane is 1:0.2 ~ 0.4.
8. the preparation method of the rapeseed oil as described in claim 1 or 7, it is characterized in that, add water in described rapeseed meal, salt and yeast ferment, the temperature of fermentation is 25 ~ 30 DEG C, fermentation time is 2 ~ 3 days, tunning is used as feed, and in rapeseed meal, water, salt and saccharomycetic weight ratio be 100:10 ~ 20:1 ~ 3:2 ~ 3.
9. the preparation method of rapeseed oil as claimed in claim 1, it is characterized in that, described refining comprises aquation, comes unstuck, decolours, deodorization and filtration, aquation: the water adding its weight 20 ~ 25% in rapeseed oil mixing crude oil carries out aquation, churning time is after 40 ~ 45min, and filtering separation is except anhydrating; Come unstuck: the degumming agent adding its weight 1 ~ 2% in mixing crude oil, usually time 15 ~ 20min, stirs, and rotating speed is 60 turns/hour; Decolouring: be put in bleacher by rapeseed oil mixing crude oil and decolour, adopts activated carbon decolorizing, and the consumption of gac is 2 ~ 4% of mixing crude oil amount; Deodorization: rapeseed oil mixing crude oil is placed on deodorization at the temperature of 200 ~ 220 DEG C, the time is 50 ~ 60min; Filter: add in rapeseed oil mixing crude oil using perlite as filtering medium, filter at the temperature of 20 ~ 40 DEG C, perlitic add-on is 1.2 ~ 2% of mixing crude oil weight, and the oil filtering gained is rapeseed oil finished product.
10. the preparation method of rapeseed oil as claimed in claim 9, is characterized in that, described degumming agent is polynite 70 ~ 74%, water glass 18 ~ 20%, poly carboxylic acid 3 ~ 5%, citric acid 10 ~ 20% and perlite 1 ~ 2% be prepared from.
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