CN113234526A - Low erucic acid and low glucosinolate rapeseed oil squeezing extraction method - Google Patents
Low erucic acid and low glucosinolate rapeseed oil squeezing extraction method Download PDFInfo
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- CN113234526A CN113234526A CN202110471763.4A CN202110471763A CN113234526A CN 113234526 A CN113234526 A CN 113234526A CN 202110471763 A CN202110471763 A CN 202110471763A CN 113234526 A CN113234526 A CN 113234526A
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- DPUOLQHDNGRHBS-UHFFFAOYSA-N Brassidinsaeure Natural products CCCCCCCCC=CCCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-UHFFFAOYSA-N 0.000 title claims abstract description 45
- URXZXNYJPAJJOQ-UHFFFAOYSA-N Erucic acid Natural products CCCCCCC=CCCCCCCCCCCCC(O)=O URXZXNYJPAJJOQ-UHFFFAOYSA-N 0.000 title claims abstract description 45
- DPUOLQHDNGRHBS-KTKRTIGZSA-N erucic acid Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-KTKRTIGZSA-N 0.000 title claims abstract description 45
- 235000019484 Rapeseed oil Nutrition 0.000 title claims abstract description 40
- 125000004383 glucosinolate group Chemical group 0.000 title claims abstract description 25
- 238000000605 extraction Methods 0.000 title claims description 12
- 235000019198 oils Nutrition 0.000 claims abstract description 43
- 239000002994 raw material Substances 0.000 claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims abstract description 15
- 239000012535 impurity Substances 0.000 claims abstract description 15
- 240000002791 Brassica napus Species 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 13
- 235000004426 flaxseed Nutrition 0.000 claims abstract description 10
- 235000011293 Brassica napus Nutrition 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 238000010791 quenching Methods 0.000 claims abstract description 8
- 230000000171 quenching effect Effects 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 claims description 39
- 238000003756 stirring Methods 0.000 claims description 36
- 238000007670 refining Methods 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 16
- 239000011259 mixed solution Substances 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 9
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 9
- 239000011425 bamboo Substances 0.000 claims description 9
- 239000003610 charcoal Substances 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 8
- 229940099596 manganese sulfate Drugs 0.000 claims description 8
- 235000007079 manganese sulphate Nutrition 0.000 claims description 8
- 239000011702 manganese sulphate Substances 0.000 claims description 8
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- IWHVCHNCTHGORM-UHDJGPCESA-M potassium;(e)-3-phenylprop-2-enoate Chemical compound [K+].[O-]C(=O)\C=C\C1=CC=CC=C1 IWHVCHNCTHGORM-UHDJGPCESA-M 0.000 claims description 8
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 8
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 8
- 238000005057 refrigeration Methods 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 7
- 229920002558 Curdlan Polymers 0.000 claims description 6
- 239000001879 Curdlan Substances 0.000 claims description 6
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 6
- 229940078035 curdlan Drugs 0.000 claims description 6
- 235000019316 curdlan Nutrition 0.000 claims description 6
- 238000005119 centrifugation Methods 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 2
- 235000019519 canola oil Nutrition 0.000 claims 5
- 239000000828 canola oil Substances 0.000 claims 5
- 244000082204 Phyllostachys viridis Species 0.000 claims 1
- 235000021388 linseed oil Nutrition 0.000 claims 1
- 239000000944 linseed oil Substances 0.000 claims 1
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 abstract description 4
- 239000003960 organic solvent Substances 0.000 abstract description 4
- 231100000331 toxic Toxicity 0.000 abstract description 3
- 230000002588 toxic effect Effects 0.000 abstract description 3
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 abstract description 2
- 235000020661 alpha-linolenic acid Nutrition 0.000 abstract description 2
- 229960004488 linolenic acid Drugs 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 1
- 235000015097 nutrients Nutrition 0.000 abstract 1
- 241001330002 Bambuseae Species 0.000 description 8
- 235000004977 Brassica sinapistrum Nutrition 0.000 description 6
- 240000006240 Linum usitatissimum Species 0.000 description 4
- 235000004431 Linum usitatissimum Nutrition 0.000 description 4
- GVJHHUAWPYXKBD-UHFFFAOYSA-N (±)-α-Tocopherol Chemical compound OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-UHFFFAOYSA-N 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 229920001282 polysaccharide Polymers 0.000 description 2
- 239000005017 polysaccharide Substances 0.000 description 2
- MJYQFWSXKFLTAY-OVEQLNGDSA-N (2r,3r)-2,3-bis[(4-hydroxy-3-methoxyphenyl)methyl]butane-1,4-diol;(2r,3r,4s,5s,6r)-6-(hydroxymethyl)oxane-2,3,4,5-tetrol Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O.C1=C(O)C(OC)=CC(C[C@@H](CO)[C@H](CO)CC=2C=C(OC)C(O)=CC=2)=C1 MJYQFWSXKFLTAY-OVEQLNGDSA-N 0.000 description 1
- 235000014698 Brassica juncea var multisecta Nutrition 0.000 description 1
- 235000006008 Brassica napus var napus Nutrition 0.000 description 1
- 235000006618 Brassica rapa subsp oleifera Nutrition 0.000 description 1
- 244000188595 Brassica sinapistrum Species 0.000 description 1
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 1
- 229930182475 S-glycoside Natural products 0.000 description 1
- 229930003427 Vitamin E Natural products 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010636 coriander oil Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 235000012041 food component Nutrition 0.000 description 1
- 235000021588 free fatty acids Nutrition 0.000 description 1
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 235000020778 linoleic acid Nutrition 0.000 description 1
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002107 myocardial effect Effects 0.000 description 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 150000003904 phospholipids Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000010499 rapseed oil Substances 0.000 description 1
- 229960001407 sodium bicarbonate Drugs 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 150000003569 thioglycosides Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
- 238000005406 washing Methods 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
- C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
-
- 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
- C11B3/10—Refining fats or fatty oils by adsorption
-
- 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
- C11B3/16—Refining fats or fatty oils by mechanical means
Abstract
The invention belongs to the technical field of rapeseed oil production, and particularly relates to a low erucic acid and low glucosinolate rapeseed oil squeezing and extracting method, which solves the problems of organic solvent pollution, low oil yield, toxic residue and the like of different degrees of rapeseed oil squeezing processes in the prior art, and the low erucic acid and low glucosinolate rapeseed oil squeezing and extracting method comprises the following steps: cleaning and drying the low erucic acid rapeseeds and flaxseeds, and then heating and baking; preserving the baking raw material in a cold storage, and then heating and baking again; carrying out microwave treatment on the secondary baking material, then quenching to room temperature, squeezing to obtain oil, centrifuging the squeezed oil to remove impurities, adding a fine preparation, and filtering; finally adding water for dispersion, and separating oil and water to obtain the rapeseed oil finished product. The rapeseed oil obtained by the invention is safe, sanitary and pollution-free, is rich in linoleic acid, alpha-linolenic acid and other nutrient components required by human body, has low erucic acid and glucosinolate content, and can not affect human health after being eaten for a long time.
Description
Technical Field
The invention relates to the technical field of rapeseed oil production, in particular to a low erucic acid and low glucosinolate rapeseed oil squeezing and extracting method.
Background
Rapeseed oil is commonly called rape oil, also called coriander oil, is transparent or semitransparent liquid obtained by pressing rape seeds, is one of main edible oils in China, is mainly produced in Yangtze river basin, southwest, northwest and the like, has the top yield in the world, and has high absorptivity of 99% to the rapeseed oil by human body. Therefore, the nutritional ingredients such as linoleic acid and other unsaturated fatty acids, vitamin E and the like contained in the health care wine can be well absorbed by the body, and the health care wine has certain efficacies of softening blood vessels and delaying senility. The traditional rapeseeds have high erucic acid and glucosinolate contents, wherein the erucic acid content is 20 to 60 percent, and are commonly called high erucic acid rapeseeds. When the rapeseed oil with high erucic acid content is eaten for a long time, the erucic acid is accumulated too much, so that the thickening of the blood vessel wall and the myocardial fat deposition are easily caused, and the human health is not facilitated.
In China, after efforts for nearly 10 years, the traditional inferior high erucic acid rapeseed oil is reformed into low erucic acid rapeseed oil with the best nutritional quality in bulk vegetable oil, and the double low rate of the rape in China reaches more than 90% by 2010. The low erucic acid rapeseed oil is prepared by squeezing low erucic acid rapeseed, and the erucic acid content is greatly reduced compared with the traditional rapeseed oil. The low erucic acid rapeseed oil can be prepared by mechanical extraction method or normal hexane extraction method, and the obtained essential oil is refined, decolored and deodorized to fully remove free fatty acid, phospholipid, pigment, peculiar smell and peculiar smell components, and miscible non-oil substances. The squeezing methods all have the problems of organic solvent pollution, low oil yield, toxic residue and the like in different degrees. Based on the statement, the invention provides a method for squeezing and extracting low erucic acid and low glucosinolate rapeseed oil.
Disclosure of Invention
The invention aims to solve the problems of organic solvent pollution, low oil yield, toxic residue and the like of the rapeseed oil squeezing process in different degrees in the prior art, and provides a method for squeezing and extracting low erucic acid and low glucosinolate rapeseed oil.
A method for squeezing and extracting low erucic acid and low glucosinolate rapeseed oil comprises the following steps:
s1, selecting low erucic acid rapeseeds and flaxseeds as raw materials, cleaning, sending the raw materials to a multifunctional roller baking machine, drying for 1-2 hours at the temperature of 50-80 ℃, then heating to 160 ℃ and baking for 4-6 hours to obtain a baking raw material;
s2, sending the baking raw material to a refrigeration house for storage, taking out the baking raw material and sending the baking raw material to a multifunctional roller baking machine again, heating to 140-;
s3, performing microwave treatment on the secondary baking material, quenching to room temperature after the microwave treatment is completed, performing squeezing oil, centrifuging and removing impurities from the squeezing oil, adding a fine preparation, performing ultrasonic dispersion treatment for 1-2 hours, and filtering;
s4, adding water into the filtered refined oil, stirring and dispersing, standing for layering, and separating oil from water to obtain the rapeseed oil finished product.
Preferably, in the step S1, the mass ratio of the canola to the linseed is 2-5: 1.
Preferably, the temperature increase rate in step S1 is 2 to 8 ℃/min.
Preferably, the temperature of the refrigerator in the step S2 is-10-0 ℃, and the preservation time is 30-70 h.
Preferably, the temperature increase rate in the step S2 is 10-20 ℃/min.
Preferably, the microwave treatment power in the step S3 is 500-.
Preferably, the centrifugation rotation speed in the step S3 is 8000-10000r/min, and the centrifugation time is 10-20 min.
Preferably, the refining agent in step S3 is prepared by the following method:
(1) sequentially adding 3 parts by weight of potassium cinnamate, 3 parts by weight of manganese sulfate and 1 part by weight of sodium bicarbonate into 35 parts by weight of water; stirring, dispersing and dissolving to obtain a mixed solution;
(2) adding 18 parts by weight of bamboo charcoal into the mixed solution, stirring and dispersing uniformly, adding 5 parts by weight of curdlan while stirring, stirring and mixing uniformly, drying, grinding and sieving with a 80-120-mesh sieve to obtain the refining agent.
Preferably, the mass ratio of the refined oil to the water in the step S4 is 1-3: 1.
The squeezing extraction method of the low erucic acid and low glucosinolate rapeseed oil provided by the invention has the following beneficial effects:
1. the invention adopts low erucic acid rapeseed and flaxseed as main raw materials, the raw materials are roasted, frozen, roasted, microwave and other pretreatment operations before pressing, so that the raw materials are subjected to rapid cooling and rapid heating for a plurality of times of stimulation, the quality and the oil yield of oil products are effectively improved in the process of curing the raw materials, the raw materials are pressed at room temperature, the natural flavor and the taste of the oil products are ensured to the greatest extent, centrifugal impurity removal and refining agent adding refining are carried out for washing, the impurity removal, decoloration and deodorization of the oil products are effectively realized, meanwhile, the introduction of organic solvent is avoided, the obtained rapeseed oil is safe, sanitary and pollution-free, is rich in linoleic acid, alpha-linolenic acid and other nutritional components required by human bodies, has low erucic acid and glucosinolate contents, and cannot influence the human health after long-term eating.
2. Adding potassium cinnamate, manganese sulfate and sodium bicarbonate into water to dissolve to obtain a mixed solution; dispersing bamboo charcoal into the mixed solution, adding coagulated polysaccharide, stirring, mixing, oven drying, and grinding to obtain refining agent; the refining agent obtained by the invention has a stable porous structure, the adopted bamboo charcoal also has a microporous structure, and the micropores are coated by the macropores, so that the refining agent has double decoloring and deodorizing effects, and the selected raw materials of the refining agent are safe and easy to remove, and cannot influence the quality of an oil product.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The invention provides a squeezing extraction method of low erucic acid and low glucosinolate rapeseed oil, which comprises the following steps:
s1, selecting low erucic acid rapeseeds and flaxseeds as raw materials according to the mass ratio of 2:1, cleaning, sending the raw materials to a multifunctional roller baking machine, drying for 1 hour at the temperature of 50 ℃, controlling the heating rate to be 2 ℃/min, heating to 140 ℃, and baking for 4 hours to obtain a baking raw material;
s2, conveying the baking raw materials into a refrigeration house, preserving for 30h at the temperature of minus 10 ℃, taking out, conveying into a multifunctional roller baking machine again, controlling the heating rate to be 10 ℃/min, heating to 140 ℃, and baking for 3h to obtain secondary baking materials;
s3, performing microwave treatment on the secondary baking material, wherein the microwave treatment power is 500W, the microwave treatment time is 5min, quenching to room temperature after the treatment is completed, pressing oil, performing centrifugal impurity removal on the pressed oil, wherein the centrifugal rotation speed is 8000r/min, the centrifugal time is 10min, and adding a fine preparation after the impurity removal, performing ultrasonic dispersion treatment for 1h, and filtering;
the refining agent in the step S3 is prepared by the following method:
(1) sequentially adding 3 parts by weight of potassium cinnamate, 3 parts by weight of manganese sulfate and 1 part by weight of sodium bicarbonate into 35 parts by weight of water; stirring, dispersing and dissolving to obtain a mixed solution;
(2) adding 18 parts by weight of bamboo charcoal into the mixed solution, stirring and dispersing uniformly, adding 5 parts by weight of coagulated polysaccharide while stirring, drying, grinding and sieving with a 80-mesh sieve after stirring and mixing uniformly to obtain a refining agent;
s4, adding water into the filtered refined oil according to the mass ratio of 1:1, stirring and dispersing, standing for layering, and separating oil from water to obtain the rapeseed oil finished product.
Example two
The invention provides a squeezing extraction method of low erucic acid and low glucosinolate rapeseed oil, which comprises the following steps:
s1, selecting low erucic acid rapeseed and linseed according to the mass ratio of 3:1, cleaning, sending to a multifunctional roller baking machine, drying at 60 ℃ for 1.2h, controlling the heating rate to be 3 ℃/min, heating to 145 ℃, and baking for 4.5h to obtain a baking raw material;
s2, conveying the baking raw materials into a refrigeration house, preserving for 40h at the temperature of-8 ℃, taking out, conveying into a multifunctional roller baking machine again, controlling the heating rate to be 12 ℃/min, heating to 145 ℃, and baking for 3.5h to obtain secondary baking materials;
s3, performing microwave treatment on the secondary baking material, wherein the microwave treatment power is 550W, the microwave treatment time is 6min, quenching to room temperature after the treatment is completed, pressing oil, performing centrifugal impurity removal on the pressed oil, the centrifugal rotation speed is 8500r/min, the centrifugal time is 12min, and adding a refining agent for ultrasonic dispersion treatment for 1.2h and filtering after the impurity removal is completed;
the refining agent in the step S3 is prepared by the following method:
(1) sequentially adding 3 parts by weight of potassium cinnamate, 3 parts by weight of manganese sulfate and 1 part by weight of sodium bicarbonate into 35 parts by weight of water; stirring, dispersing and dissolving to obtain a mixed solution;
(2) adding 18 parts by weight of bamboo charcoal into the mixed solution, stirring and dispersing uniformly, adding 5 parts by weight of curdlan while stirring, stirring and mixing uniformly, drying, grinding and sieving by a 90-mesh sieve to obtain a refining agent;
s4, adding water into the filtered refined oil according to the mass ratio of 1.5:1, stirring and dispersing, standing for layering, and separating oil from water to obtain the rapeseed oil finished product.
EXAMPLE III
The invention provides a squeezing extraction method of low erucic acid and low glucosinolate rapeseed oil, which comprises the following steps:
s1, selecting low erucic acid rapeseed and linseed according to the mass ratio of 3.5:1, cleaning, sending to a multifunctional roller baking machine, drying at 65 ℃ for 1.5h, controlling the heating rate to be 5 ℃/min, heating to 150 ℃, and baking for 5h to obtain a baking raw material;
s2, conveying the baking raw materials into a refrigeration house, preserving for 50h at the temperature of minus 5 ℃, taking out, conveying into a multifunctional roller baking machine again, controlling the heating rate to be 15 ℃/min, heating to 150 ℃, and baking for 4h to obtain secondary baking materials;
s3, performing microwave treatment on the secondary baking material, wherein the microwave treatment power is 600W, the microwave treatment time is 8min, quenching to room temperature after the treatment is completed, pressing oil, performing centrifugal impurity removal on the pressed oil, wherein the centrifugal rotation speed is 9000r/min, the centrifugal time is 15min, and adding a refining agent for ultrasonic dispersion treatment for 1.5h and filtering after the impurity removal is completed;
the refining agent in the step S3 is prepared by the following method:
(1) sequentially adding 3 parts by weight of potassium cinnamate, 3 parts by weight of manganese sulfate and 1 part by weight of sodium bicarbonate into 35 parts by weight of water; stirring, dispersing and dissolving to obtain a mixed solution;
(2) adding 18 parts by weight of bamboo charcoal into the mixed solution, stirring and dispersing uniformly, adding 5 parts by weight of curdlan while stirring, stirring and mixing uniformly, drying, grinding and sieving with a 100-mesh sieve to obtain a refining agent;
s4, adding water into the filtered refined oil according to the mass ratio of 2:1, stirring and dispersing, standing for layering, and separating oil from water to obtain the rapeseed oil finished product.
Example four
The invention provides a squeezing extraction method of low erucic acid and low glucosinolate rapeseed oil, which comprises the following steps:
s1, selecting the raw materials of low erucic acid rapeseed and linseed according to the mass ratio of 4:1, cleaning, then sending the raw materials to a multifunctional roller baking machine, drying for 1.8 hours at the temperature of 70 ℃, then controlling the heating rate to be 7 ℃/min, heating to 155 ℃, and baking for 5.5 hours to obtain a baking raw material;
s2, conveying the baking raw materials into a refrigeration house, preserving for 60h at the temperature of-2 ℃, taking out, conveying into a multifunctional roller baking machine again, controlling the heating rate to be 18 ℃/min, heating to 155 ℃, and baking for 4.5h to obtain secondary baking materials;
s3, performing microwave treatment on the secondary baking material, wherein the microwave treatment power is 650W, the microwave treatment time is 9min, quenching to room temperature after the treatment is completed, pressing oil, performing centrifugal impurity removal on the pressed oil, the centrifugal rotation speed is 9500r/min, the centrifugal time is 18min, and adding a refining agent for ultrasonic dispersion treatment for 1.8h and filtering after the impurity removal is completed;
the refining agent in the step S3 is prepared by the following method:
(1) sequentially adding 3 parts by weight of potassium cinnamate, 3 parts by weight of manganese sulfate and 1 part by weight of sodium bicarbonate into 35 parts by weight of water; stirring, dispersing and dissolving to obtain a mixed solution;
(2) adding 18 parts by weight of bamboo charcoal into the mixed solution, stirring and dispersing uniformly, adding 5 parts by weight of curdlan while stirring, stirring and mixing uniformly, drying, grinding and sieving with a 110-mesh sieve to obtain a refining agent;
s4, adding water into the filtered refined oil according to the mass ratio of 2.5:1, stirring and dispersing, standing for layering, and separating oil from water to obtain the rapeseed oil finished product.
EXAMPLE five
The invention provides a squeezing extraction method of low erucic acid and low glucosinolate rapeseed oil, which comprises the following steps:
s1, selecting low erucic acid rapeseeds and flaxseeds as raw materials according to the mass ratio of 5:1, cleaning, sending the raw materials to a multifunctional roller baking machine, drying for 2 hours at the temperature of 80 ℃, then controlling the heating rate to be 8 ℃/min, heating to 160 ℃, and baking for 6 hours to obtain a baking raw material;
s2, conveying the baking raw materials into a refrigeration house, preserving for 70h at the temperature of 0 ℃, taking out, conveying into a multifunctional roller baking machine again, controlling the heating rate to be 20 ℃/min, heating to 160 ℃, and baking for 5h to obtain secondary baking materials;
s3, performing microwave treatment on the secondary baking material, wherein the microwave treatment power is 700W, the microwave treatment time is 10min, quenching to room temperature after the treatment is completed, pressing oil, performing centrifugal impurity removal on the pressed oil, the centrifugal rotation speed is 10000r/min, the centrifugal time is 20min, and adding a fine preparation after the impurity removal, performing ultrasonic dispersion treatment for 2h, and filtering;
the refining agent in the step S3 is prepared by the following method:
(1) sequentially adding 3 parts by weight of potassium cinnamate, 3 parts by weight of manganese sulfate and 1 part by weight of sodium bicarbonate into 35 parts by weight of water; stirring, dispersing and dissolving to obtain a mixed solution;
(2) adding 18 parts by weight of bamboo charcoal into the mixed solution, stirring and dispersing uniformly, adding 5 parts by weight of curdlan while stirring, stirring and mixing uniformly, drying, grinding and sieving with a 120-mesh sieve to obtain a refining agent;
s4, adding water into the filtered refined oil according to the mass ratio of 3:1, stirring and dispersing, standing for layering, and separating oil from water to obtain the rapeseed oil finished product.
Referring to GB/T11762-:
| example one | Example two | EXAMPLE III | Example four | EXAMPLE five | |
| Content of erucic acid/%) | 3.5 | 3.1 | 2.0 | 2.9 | 3.8 |
| Thioglycoside content/mu mol/g | 40.28 | 35.79 | 28.55 | 32.10 | 37.94 |
| Oil yield/% | 40.7 | 43.2 | 41.3 | 40.1 | 38.5 |
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A low erucic acid and low glucosinolate rapeseed oil squeezing extraction method is characterized by comprising the following steps:
s1, selecting low erucic acid rapeseeds and flaxseeds as raw materials, cleaning, sending the raw materials to a multifunctional roller baking machine, drying for 1-2 hours at the temperature of 50-80 ℃, then heating to 160 ℃ and baking for 4-6 hours to obtain a baking raw material;
s2, sending the baking raw material to a refrigeration house for storage, taking out the baking raw material and sending the baking raw material to a multifunctional roller baking machine again, heating to 140-;
s3, performing microwave treatment on the secondary baking material, quenching to room temperature after the microwave treatment is completed, performing squeezing oil, centrifuging and removing impurities from the squeezing oil, adding a fine preparation, performing ultrasonic dispersion treatment for 1-2 hours, and filtering;
s4, adding water into the filtered refined oil, stirring and dispersing, standing for layering, and separating oil from water to obtain the rapeseed oil finished product.
2. The method of claim 1, wherein the weight ratio of the canola oil to the flaxseed oil in the step S1 is 2-5: 1.
3. The pressing and extracting method of canola oil with low erucic acid and low glucosinolate as claimed in claim 1, wherein the temperature raising rate in step S1 is 2-8 ℃/min.
4. The squeezing and extracting method of low erucic acid and low glucosinolate rapeseed oil according to claim 1, wherein the temperature of the refrigerator in the step S2 is-10 to 0 ℃, and the preservation time is 30 to 70 hours.
5. The pressing and extracting method of canola oil with low erucic acid and low glucosinolate as claimed in claim 1, wherein the temperature raising rate in step S2 is 10-20 ℃/min.
6. The squeezing and extracting method of canola oil with low erucic acid and low glucosinolate as claimed in claim 1, wherein the microwave treatment power in step S3 is 500-700W, and the microwave treatment time is 5-10 min.
7. The squeezing and extracting method of low erucic acid and low glucosinolate rapeseed oil as claimed in claim 1, wherein the centrifugation speed in step S3 is 8000-10000r/min, and the centrifugation time is 10-20 min.
8. The pressing and extracting method of low erucic acid and low glucosinolate rapeseed oil according to claim 1, wherein the refining agent in the step S3 is prepared by the following steps:
(1) sequentially adding 3 parts by weight of potassium cinnamate, 3 parts by weight of manganese sulfate and 1 part by weight of sodium bicarbonate into 35 parts by weight of water; stirring, dispersing and dissolving to obtain a mixed solution;
(2) adding 18 parts by weight of bamboo charcoal into the mixed solution, stirring and dispersing uniformly, adding 5 parts by weight of curdlan while stirring, stirring and mixing uniformly, drying, grinding and sieving with a 80-120-mesh sieve to obtain the refining agent.
9. The squeezing extraction method of canola oil with low erucic acid and low glucosinolate as claimed in claim 1, wherein the mass ratio of refined oil to water in step S4 is 1-3: 1.
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