CN112481017A - Production method of linseed oil - Google Patents
Production method of linseed oil Download PDFInfo
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- CN112481017A CN112481017A CN202011268898.2A CN202011268898A CN112481017A CN 112481017 A CN112481017 A CN 112481017A CN 202011268898 A CN202011268898 A CN 202011268898A CN 112481017 A CN112481017 A CN 112481017A
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- linseed oil
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- metal salt
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- 235000021388 linseed oil Nutrition 0.000 title claims abstract description 62
- 239000000944 linseed oil Substances 0.000 title claims abstract description 62
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 239000003921 oil Substances 0.000 claims abstract description 28
- 235000019198 oils Nutrition 0.000 claims abstract description 28
- 239000010779 crude oil Substances 0.000 claims abstract description 25
- 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 claims abstract description 24
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 24
- -1 alkali metal salt Chemical class 0.000 claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 22
- 239000004927 clay Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 13
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- 229930003427 Vitamin E Natural products 0.000 claims abstract description 12
- 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 claims abstract description 12
- 238000007670 refining Methods 0.000 claims abstract description 12
- 235000019165 vitamin E Nutrition 0.000 claims abstract description 12
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- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 4
- 235000004426 flaxseed Nutrition 0.000 claims description 25
- 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 claims description 8
- 238000000605 extraction Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 150000002978 peroxides Chemical class 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- 235000016709 nutrition Nutrition 0.000 abstract description 5
- 239000004615 ingredient Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 8
- 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 description 8
- 240000006240 Linum usitatissimum Species 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 235000020661 alpha-linolenic acid Nutrition 0.000 description 4
- 239000008157 edible vegetable oil Substances 0.000 description 4
- 229960004488 linolenic acid Drugs 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 241000208202 Linaceae Species 0.000 description 3
- 235000019737 Animal fat Nutrition 0.000 description 2
- MBMBGCFOFBJSGT-KUBAVDMBSA-N all-cis-docosa-4,7,10,13,16,19-hexaenoic acid Chemical compound CC\C=C/C\C=C/C\C=C/C\C=C/C\C=C/C\C=C/CCC(O)=O MBMBGCFOFBJSGT-KUBAVDMBSA-N 0.000 description 2
- 235000019658 bitter taste Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 2
- 235000019197 fats Nutrition 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
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- 238000007689 inspection Methods 0.000 description 2
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- 238000012545 processing Methods 0.000 description 2
- BHQCQFFYRZLCQQ-UHFFFAOYSA-N (3alpha,5alpha,7alpha,12alpha)-3,7,12-trihydroxy-cholan-24-oic acid Natural products OC1CC2CC(O)CCC2(C)C2C1C1CCC(C(CCC(O)=O)C)C1(C)C(O)C2 BHQCQFFYRZLCQQ-UHFFFAOYSA-N 0.000 description 1
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 1
- 239000004380 Cholic acid Substances 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 102000015779 HDL Lipoproteins Human genes 0.000 description 1
- 108010010234 HDL Lipoproteins Proteins 0.000 description 1
- 102000007330 LDL Lipoproteins Human genes 0.000 description 1
- 108010007622 LDL Lipoproteins Proteins 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- JAZBEHYOTPTENJ-JLNKQSITSA-N all-cis-5,8,11,14,17-icosapentaenoic acid Chemical compound CC\C=C/C\C=C/C\C=C/C\C=C/C\C=C/CCCC(O)=O JAZBEHYOTPTENJ-JLNKQSITSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 235000012000 cholesterol Nutrition 0.000 description 1
- BHQCQFFYRZLCQQ-OELDTZBJSA-N cholic acid Chemical compound C([C@H]1C[C@H]2O)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC(O)=O)C)[C@@]2(C)[C@@H](O)C1 BHQCQFFYRZLCQQ-OELDTZBJSA-N 0.000 description 1
- 229960002471 cholic acid Drugs 0.000 description 1
- 235000019416 cholic acid Nutrition 0.000 description 1
- KXGVEGMKQFWNSR-UHFFFAOYSA-N deoxycholic acid Natural products C1CC2CC(O)CCC2(C)C2C1C1CCC(C(CCC(O)=O)C)C1(C)C(O)C2 KXGVEGMKQFWNSR-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000020669 docosahexaenoic acid Nutrition 0.000 description 1
- 229940090949 docosahexaenoic acid Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000020673 eicosapentaenoic acid Nutrition 0.000 description 1
- 229960005135 eicosapentaenoic acid Drugs 0.000 description 1
- JAZBEHYOTPTENJ-UHFFFAOYSA-N eicosapentaenoic acid Natural products CCC=CCC=CCC=CCC=CCC=CCCCC(O)=O JAZBEHYOTPTENJ-UHFFFAOYSA-N 0.000 description 1
- 235000004626 essential fatty acids Nutrition 0.000 description 1
- 235000021323 fish oil Nutrition 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229930013686 lignan Natural products 0.000 description 1
- 235000009408 lignans Nutrition 0.000 description 1
- 150000005692 lignans Chemical class 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000020660 omega-3 fatty acid Nutrition 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
Images
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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention discloses a linseed oil production method, which comprises the following steps: the method comprises the steps of selecting materials, mixing and pressing, heating crude oil, refining, drying in vacuum and standing, wherein activated clay modified by alkali metal salt is added in the processes of cold pressing and refining of linseed oil, and low-temperature pressing and precise filtering are adopted. The invention adds vitamin E oil and oxygen into the linseed oil to react, so that the linseed oil does not release oxygen any more, and thus, redundant oxygen is not generated after combination, and thus, the nutritional ingredients of the linseed oil are reserved to a greater extent.
Description
Technical Field
The invention relates to the field of food, and particularly relates to a linseed oil production method.
Background
Flaxseed is a commercial crop of the family flaxseed. The alpha-linolenic acid contained in the flaxseeds is scientifically detected to be the highest content of the current terrestrial land plants, is the essential fatty acid of the human body, can be converted into eicosapentaenoic acid and docosahexaenoic acid in the human body, and is the effective active ingredient in the fish oil. The animal fat mainly contains saturated fatty acid and cholesterol, and the alpha-linolenic acid in the linseed can convert low-density lipoprotein in the animal fat into high-density lipoprotein to form cholic acid to be discharged out of a body, so that the effects of reducing blood fat, blood pressure and fat are achieved. Flax (commonly called flax) is a traditional edible oil seed in northwest of China and is one of a few oil crops rich in alpha-linolenic acid. Linseed (flax seed) contains 38% -42% of oil, wherein the content of alpha-linolenic acid reaches about 57%, and is typical omega-3 edible oil. Meanwhile, the flaxseed also contains various nutritional ingredients such as protein, edible gum, vitamins, lignans and the like, and has great development and utilization values. In China, linseed oil has been used as edible oil for hundreds of years, the production and consumption of the edible linseed oil are mainly limited to a main flax production area for a long time, the edible linseed oil is low in commercialization degree, the majority of the edible linseed oil is processed in a small scale, the edible linseed oil is locally squeezed and consumed, the processing facilities are crude and simple, the squeezed oil is subjected to simple refining such as filtration, sedimentation and the like, even is not refined, and the quality inspection is rarely carried out due to insufficient conditions so as to be used as the finished edible oil. Cold-pressed linseed oil has a fragrance similar to nuts, while hot-pressed linseed oil after hot frying has a strong fragrance of linseed oil, but the production method and process of hot pressing seriously damage the nutritional value of the product, so that the health care function of the linseed oil is greatly reduced, once sampling inspection is carried out, the problems of unqualified physicochemical and sanitary indexes and the like often occur, and particularly foreign matters or toxic substances can be bred or brought in by exogenous factors in the processing process, such as: bitter taste of scorched paste caused by excessive seed frying, overproof benzopyrene, lubricating oil of a squeezing machine and the like hide food safety risks. In addition, no matter the hot-pressed linseed oil or the cold-pressed linseed oil is stored for a period of time, flocculent precipitates are generated, and strong bitter taste is accompanied, so that the oil product sale and market promotion are influenced.
In conclusion, there is a need to develop a production method that can effectively maintain the nutrients and flavor of linseed oil and can also effectively meet the requirements of physicochemical and hygienic indexes of the product.
Disclosure of Invention
The invention provides a linseed oil production method aiming at the problems in the prior art, and when the linseed oil production method is applied, alkali metal salt modified activated clay is added in the cold pressing and refining processes of the linseed oil, and low-temperature pressing and precise filtration are adopted, so that the linseed oil production method has the advantages that the nutritional ingredients of the original linseed oil can be perfectly maintained, meanwhile, the extraction process is simplified, and the linseed oil can be degummed, deacidified, decolored and deodorized at one time in the refining process. And the method completely adopts a physical mode without any chemical reaction process, avoids chemical residues generated in chemical refining, and improves the yield of the linseed oil.
The invention is realized by the following technical scheme:
a process for producing linseed oil, said process comprising the steps of:
s1, selecting flaxseeds, screening, drying and controlling the water content in the flaxseeds to be between 5 and 10 percent;
s2, mixing and pressing, namely putting the flaxseeds and the activated clay modified by the alkali metal salt into a double-screw oil press to be uniformly mixed, and then pressing for 30-40 min to obtain flaxseed crude oil;
s3, filtering, namely precipitating and fishing out residues of the squeezed crude oil through a oil clarifying tank, then filtering the crude oil in a filter to obtain crude oil, and sending the squeezed cold-pressed cake to an extraction workshop for residual oil extraction;
s4, heating the crude oil obtained after filtration in the step S3, mixing the heated crude oil with activated clay modified by alkali metal salt, and then sending the mixture into a mixer for mixing and stirring;
s5, refining, centrifuging in a centrifuge to remove most of the activated clay modified by alkali metal salt, filtering, and further filtering out residual trace alkali metal salt modified activated clay to obtain refined linseed oil;
s6, adding vitamin E oil: adding 5% of vitamin E oil into refined linseed oil, stirring and standing to fully and uniformly mix the two kinds of oil;
and S7, vacuum drying and standing, wherein the refined linseed oil obtained after filtration in the step S5 is sent to a vacuum drier for vacuum drying, then is cooled and stands for 2-3 days to obtain a linseed oil finished product.
Furthermore, the flaxseed oil production method is characterized in that the moisture and volatile matter content of flaxseeds is less than or equal to 0.10 percent, the acid value (KOH) is less than or equal to 5.0mg/g, and the peroxide value is less than or equal to 10 mmol/kg.
Further, in a linseed oil production method, the mass ratio of the linseed to the alkali metal salt modified activated clay is 100: (5-10).
Further, in the linseed oil production method, the thickness of the cold pressed cake in the step S3 is less than or equal to 10mm, the mass percent of water is 7-10%, and the mass percent of residual oil is less than or equal to 10.0%.
Further, in the linseed oil production method, the heating temperature of the crude oil in the step S4 is 20-60 ℃.
Further, in a linseed oil production method, the weight ratio of the crude oil to the alkali metal salt modified activated clay in step S4 is 100: (5-10).
Further, the linseed oil production method is characterized in that the alkali metal salt is one or more of potassium carbonate, sodium carbonate and calcium carbonate.
In summary, the following beneficial effects of the invention are:
1. the invention relates to a linseed oil production method, which adds alkali metal salt modified activated clay in the cold pressing and refining processes of linseed oil, adopts low-temperature pressing and precise filtration, has the advantages that the nutrient components of the original linseed can be perfectly retained, simultaneously, the process simplifies the extraction process, and the linseed oil can be degummed, deacidified, decolored and deodorized once in the refining process. And the method completely adopts a physical mode without any chemical reaction process, avoids chemical residues generated in chemical refining, and improves the yield of the linseed oil.
2. According to the method for producing the linseed oil, three polyunsaturated double bonds in the molecular structure of the linseed oil are easily oxidized, the vitamin E is added into the linseed oil, the vitamin E contains a plurality of unsaturated double bonds, the natural molecular structure of the vitamin E oil is a closed-loop structure, once the vitamin E reacts with oxygen, the vitamin E oil cannot release oxygen any more, and therefore after combination, redundant oxygen cannot be generated, and the nutritional ingredients of the linseed oil are reserved to a greater extent.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
As shown in fig. 1, a method for producing linseed oil, the method comprising the steps of:
s1, selecting flaxseeds, screening, drying and controlling the water content in the flaxseeds to be between 5 and 10 percent;
s2, mixing and pressing, namely putting the flaxseeds and the activated clay modified by the alkali metal salt into a double-screw oil press to be uniformly mixed, and then pressing for 30-40 min to obtain flaxseed crude oil;
s3, filtering, namely precipitating and fishing out residues of the squeezed crude oil through a oil clarifying tank, then filtering the crude oil in a filter to obtain crude oil, and sending the squeezed cold-pressed cake to an extraction workshop for residual oil extraction;
s4, heating the crude oil obtained after filtration in the step S3, mixing the heated crude oil with the activated clay modified by the alkali metal salt, and then sending the mixture into a mixer for mixing and stirring;
s5, refining, centrifuging in a centrifuge to remove most of the activated clay modified by alkali metal salt, filtering, and further filtering out residual trace alkali metal salt modified activated clay to obtain refined linseed oil;
s6, adding vitamin E oil: adding 5% of vitamin E oil into refined linseed oil, stirring and standing to fully and uniformly mix the two kinds of oil;
and S7, vacuum drying and standing, wherein the refined linseed oil obtained after filtration in the step S5 is sent to a vacuum drier for vacuum drying, then is cooled and stands for 2-3 days to obtain a linseed oil finished product.
Specifically, the water content and volatile matter content of the flaxseeds are less than or equal to 0.10 percent, the acid value (KOH) is less than or equal to 5.0mg/g, and the peroxide value is less than or equal to 10 mmol/kg.
Specifically, the mass ratio of the linseed to the alkali metal salt modified activated clay in (1) is 100: (5-10).
Specifically, the thickness of the cold-pressed cake in the step S3 is less than or equal to 10mm, the mass percent of water is 7-10%, and the mass percent of residual oil is less than or equal to 10.0%.
Specifically, the heating temperature of the crude oil in the step S4 is 20-60 ℃.
Specifically, the weight ratio of the crude oil to the alkali metal salt-modified activated clay in step S4 is 100: (5-10).
Specifically, the alkali metal salt is one or more of potassium carbonate, sodium carbonate and calcium carbonate.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A process for producing linseed oil, characterized in that the process comprises the steps of:
s1, selecting flaxseeds, screening, drying and controlling the water content in the flaxseeds to be between 5 and 10 percent;
s2, mixing and pressing, namely putting the flaxseeds and the activated clay modified by the alkali metal salt into a double-screw oil press to be uniformly mixed, and then pressing for 30-40 min to obtain flaxseed crude oil;
s3, filtering, namely precipitating and fishing out residues of the squeezed crude oil through a oil clarifying tank, then filtering the crude oil in a filter to obtain crude oil, and sending the squeezed cold-pressed cake to an extraction workshop for residual oil extraction;
s4, heating the crude oil obtained after filtration in the step S3, mixing the heated crude oil with the activated clay modified by the alkali metal salt, and then sending the mixture into a mixer for mixing and stirring;
s5, refining, centrifuging in a centrifuge to remove most of the activated clay modified by alkali metal salt, filtering, and further filtering out residual trace alkali metal salt modified activated clay to obtain refined linseed oil;
s6, adding vitamin E oil: adding 5% of vitamin E oil into refined linseed oil, stirring and standing to fully and uniformly mix the two kinds of oil;
and S7, vacuum drying and standing, wherein the refined linseed oil obtained after filtration in the step S5 is sent to a vacuum drier for vacuum drying, then is cooled and stands for 2-3 days to obtain a linseed oil finished product.
2. The method of claim 1, wherein the flaxseed oil has a moisture and volatile content of less than or equal to 0.10%, an acid number (KOH) of less than or equal to 5.0mg/g, and a peroxide number of less than or equal to 10 mmol/kg.
3. The flaxseed oil production method of claim 1, wherein the mass ratio of flaxseed to alkali metal salt-modified activated clay is 100: (5-10).
4. The linseed oil production method according to claim 1, wherein the thickness of the cold pressed cake in the step S3 is less than or equal to 10mm, the mass percent of water is 7-10%, and the mass percent of residual oil is less than or equal to 10.0%.
5. The linseed oil production method according to claim 1, wherein the crude oil heating temperature in the step S4 is 20-60 ℃.
6. The linseed oil production method according to claim 1, wherein the weight ratio of the crude oil to the alkali metal salt modified activated clay in step S4 is 100: (5-10).
7. The linseed oil production method according to claim 1, wherein said alkali metal salt is one or more of potassium carbonate, sodium carbonate, calcium carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011268898.2A CN112481017A (en) | 2020-11-13 | 2020-11-13 | Production method of linseed oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011268898.2A CN112481017A (en) | 2020-11-13 | 2020-11-13 | Production method of linseed oil |
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| CN112481017A true CN112481017A (en) | 2021-03-12 |
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| CN202011268898.2A Pending CN112481017A (en) | 2020-11-13 | 2020-11-13 | Production method of linseed oil |
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| CN114480010A (en) * | 2021-12-28 | 2022-05-13 | 宁夏君星坊食品科技有限公司 | Automatic production process for cold pressing of edible vegetable oil |
| CN114507562A (en) * | 2021-12-31 | 2022-05-17 | 宁夏君星坊食品科技有限公司 | Automatic production process for cold refining of edible vegetable oil |
| CN116103080A (en) * | 2021-11-10 | 2023-05-12 | 李石平 | Linseed oil not easy to generate bitter taste and preparation method thereof |
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| CN116103080A (en) * | 2021-11-10 | 2023-05-12 | 李石平 | Linseed oil not easy to generate bitter taste and preparation method thereof |
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| CN114507562A (en) * | 2021-12-31 | 2022-05-17 | 宁夏君星坊食品科技有限公司 | Automatic production process for cold refining of edible vegetable oil |
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