CN105505564A - Method for rapidly extracting linseed oil - Google Patents

Method for rapidly extracting linseed oil Download PDF

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Publication number
CN105505564A
CN105505564A CN201510997296.3A CN201510997296A CN105505564A CN 105505564 A CN105505564 A CN 105505564A CN 201510997296 A CN201510997296 A CN 201510997296A CN 105505564 A CN105505564 A CN 105505564A
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CN
China
Prior art keywords
linseed oil
extraction
linseed
temperature
kettle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510997296.3A
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Chinese (zh)
Inventor
滕春娟
田冠宇
邓林
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Guizhou Aerospace Wujiang Electro Mechanical Equipment Co Ltd
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Guizhou Aerospace Wujiang Electro Mechanical Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Guizhou Aerospace Wujiang Electro Mechanical Equipment Co Ltd filed Critical Guizhou Aerospace Wujiang Electro Mechanical Equipment Co Ltd
Priority to CN201510997296.3A priority Critical patent/CN105505564A/en
Publication of CN105505564A publication Critical patent/CN105505564A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B1/00—Production of fats or fatty oils from raw materials
    • C11B1/02—Pretreatment
    • C11B1/04—Pretreatment of vegetable raw material
    • 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
    • C11B1/104—Production of fats or fatty oils from raw materials by extracting using super critical gases or vapours

Abstract

The invention discloses a method for rapidly extracting linseed oil. The method includes the steps that the supercritical CO2 fluid extraction technology is adopted for extracting the linseed oil from linseeds at high pressure; when extracting is carried out, cooled linseed powder is put into a barrel of an extraction kettle, CO2 gas is injected into the extraction kettle, the temperature and the pressure in the extraction kettle are kept in the supercritical state of the CO2 gas, the CO2 gas is in contact with the linseed powder, the linseed oil in the linseed powder is dissolved into supercritical fluid accordingly, the fluid containing the linseed oil is subjected to throttling expansion from the extraction kettle and enters a separating kettle, and the linseed oil is separated and collected. Compared with an existing squeezing method and a low-pressure supercritical extraction method, the method is low in extracting temperature and small in energy consumption, active ingredients in the linseed oil are not damaged, and the extracted linseed oil has the advantages of being good in quality and high in purity; the technology is simple, the extraction period is short and only ranges from 1 h to 1.5 h, and the production period is greatly shortened.

Description

A kind of method of rapid extraction linseed oil
Technical field
The present invention relates to a kind of method of rapid extraction linseed oil, belong to material extractive technique field.
Background technology
Linseed oil extracts from linseed oil, and linseed oil is annual or the seed of per nnial herb, and full seed oil length is generally more than 30%.Linseed oil contains the unsaturated fatty acidss such as abundant alpha-linolenic acid and linolic acid, and alpha-linolenic acid is a kind of unsaturated fatty acids very important to HUMAN HEALTH in linseed oil, and molecular formula is C 18h 30o 2, alpha-linolenic acid can increase intelligence, and improves memory, vision protection.There are some researches prove, lack alpha-linolenic acid will cause children's brain and retinal development slow, directly cause MR, exercise not harmony, the multiple symptom such as hyperkinetic syndrome and disease, so linseed oil has very wide market outlook.But alpha-linolenic acid is very easily by high temperature oxidation, thus its content in linseed oil is declined.At present, extract linseed oil many employings milling process and low-pressure supercritical extraction method, the former high temperature can destroy alpha-linolenic acid, and the method needs through a series of more complicated operation, and need a large amount of equipment and manpower, energy consumption is high, length consuming time, and extraction cost is high; Though the latter can overcome the former high temperature defect and reduce energy consumption, short time consumption is also longer.
Summary of the invention
The object of the present invention is to provide a kind of method of rapid extraction linseed oil, the method Extracting temperature is low, and energy consumption is little, does not destroy the effective constituent in linseed oil, and technique is simple, consuming time short, reduces the production cycle.
Technical scheme of the present invention: a kind of method of rapid extraction linseed oil, comprises the following steps:
(1) before extraction linseed oil is screened, predrying, pulverize, dry and cooling process;
(2) adopt soxhlet extraction to measure the crude fat content of the raw material processed through step (1), during mensuration, adopt apparatus,Soxhlet's, with sherwood oil (30 ~ 60) as solvent, refluxing extraction 24 hours, then calculate the crude fat content of raw material;
(3), during extraction, the linseed meal after step (1) process is put into the material barrel of extraction kettle, by CO 2gas inject extraction kettle, in maintenance extraction kettle, temperature and pressure is at CO 2the supercritical state of gas also makes it to contact with linseed meal, makes linseed oil be dissolved in supercritical CO 2among fluid;
(4) supercutical fluid containing linseed oil is entered separating still from extraction kettle through throttling expansion and parse linseed oil, and collect.
In preceding method, described screening refers to be chosen the impurity in linseed oil and the raw material that goes mouldy.
In preceding method, described predrying be that linseed oil is put into baking oven, the water content of drying 24 hours linseed oil at 50 ~ 60 DEG C of temperature or drying to linseed oil is not more than 5%.
In preceding method, described pulverizing the linseed oil after predrying is put into crusher for crushing become 20 order ~ 40 object linseed meals.
In preceding method, described oven dry and cooling step are that linseed meal is put into baking oven, at 50 ~ 60 DEG C of temperature, dry 12 hours to linseed meal; Linseed meal after oven dry continues to stay in stoving oven and naturally cools to normal temperature.The present invention, by predrying and oven dry twice drying process, significantly can reducing the moisture in raw material, making when extracting for CO 2the condition of supercritical temperature and pressure reduces, and can complete extraction at relatively low temperatures and pressures, efficiently can either complete extraction, also can work-ing life of extension fixture.And the material after pulverizing can fully and the CO of supercritical state 2fluid contact, significantly can improve percentage extraction.
In preceding method, described supercritical state temperature is 40 ~ 50 DEG C, and pressure is 65 ~ 70MPa; CO 2gas is 180 ~ 200kg/h by the flow of extraction kettle, and extraction time is 1 ~ 1.5h.
In preceding method, described collection puts into homogenizer by from the linseed oil with a collection of raw material abstraction, homogeneous rear filling, and lucifuge stored refrigerated.
Owing to adopting technique scheme, the invention has the advantages that: compare with low-pressure supercritical extraction method with existing milling process, the present invention not only Extracting temperature is low, and energy consumption is little, does not destroy the effective constituent in linseed oil, it is good that the linseed oil extracted has quality, the advantage that purity is high, and technique of the present invention is simple, and extraction cycle is short, only 1 ~ 1.5h, shortens the production cycle greatly.In addition, the CO under the present invention's above-critical state 2fluid, as extraction solvent, recycles in same system, and not only technique is simple, and energy consumption is low, and solvent-oil ratio is little, and price is cheap, therefore extracts cost low.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearly, below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1:
When extracting linseed oil, first the linseed oil after screening is put into baking oven, at 50 DEG C of temperature, it is dried 24 hours, then the linseed oil after predrying is put into crusher for crushing and become 20 object linseed meals, linseed meal is put into baking oven, at 50 DEG C of temperature, it is dried 12 hours; Linseed meal after oven dry continues to stay in stoving oven and naturally cools to normal temperature; The crude fat content that soxhlet extraction measures raw material is 35.2%.Take the material barrel that cooled linseed meal 3125.0g puts into extraction kettle, by CO 2gas inject extraction kettle extracts, and extraction temperature is 40 DEG C, and pressure is 65MPa; CO 2gas is 180kg/h by the flow of extraction kettle, extraction time is 1h, makes the linseed oil in linseed meal be dissolved among supercutical fluid, the fluid containing linseed oil is entered separating still from extraction kettle through throttling expansion and parses, obtain linseed oil 935.5g, its extraction yield is 85.04%.Finally, the linseed oil of extraction is put into homogenizer, homogeneous rear filling, and lucifuge stored refrigerated.
Embodiment 2:
When extracting linseed oil, first the linseed oil after screening is put into baking oven, at 50 DEG C of temperature, it is dried 24 hours, then the linseed oil after predrying is put into crusher for crushing and become 20 object linseed meals; Then linseed meal is put into baking oven, at 50 DEG C of temperature, it is dried 12 hours; Linseed meal after oven dry continues to stay in stoving oven and naturally cools to normal temperature; The crude fat content that soxhlet extraction measures raw material is 35.2%.Take the material barrel that cooled linseed meal 4294.5g puts into extraction kettle, by CO 2gas inject extraction kettle extracts, and extraction temperature is 40 DEG C, and pressure is 67MPa; CO 2gas is 180kg/h by the flow of extraction kettle, extraction time is 1.5h, makes the linseed oil in linseed meal be dissolved among supercutical fluid, the fluid containing linseed oil is entered separating still from extraction kettle through throttling expansion and parses, obtain linseed oil 1318.0g, its extraction yield is 87.2%.Finally, the linseed oil of extraction is put into homogenizer, homogeneous rear filling, and lucifuge stored refrigerated.
Embodiment 3:
When extracting linseed oil, first the linseed oil after screening is put into baking oven, at 60 DEG C of temperature, it is dried 24 hours; Linseed oil after predrying is put into crusher for crushing and becomes 40 object linseed meals; Then linseed meal is put into baking oven, at 60 DEG C of temperature, it is dried 12 hours; Linseed meal after oven dry continues to stay in stoving oven and naturally cools to normal temperature; The crude fat content that soxhlet extraction measures raw material is 35.2%.Take the material barrel that cooled linseed meal 3487.0g puts into extraction kettle, by CO 2gas inject extraction kettle extracts, and extraction temperature is 50 DEG C, and pressure is 70MPa; CO 2gas is 200kg/h by the flow of extraction kettle, extraction time is 1.5h, makes the linseed oil in linseed meal be dissolved among supercutical fluid, the fluid containing linseed oil is entered separating still from extraction kettle through throttling expansion and parses, obtain linseed oil 1086.0g, its extraction yield is 88.47%.Finally, the linseed oil of extraction is put into homogenizer, homogeneous rear filling, and lucifuge stored refrigerated.
The result of above-described embodiment is as follows:
Sequence number Extracting pressure/MPa Extraction temperature/DEG C Extraction time/h Raw material/g Extract/g Extraction yield/%
1 65 40 1 3125.0 935.5 85.04
2 67 40 1.5 4294.5 1318.0 87.2
3 70 50 1.5 3487.0 1086.0 88.47
Certainly, more than just embody rule example of the present invention, the technical scheme that the present invention also has other embodiment, all employings to be equal to replacement or equivalent transformation to be formed, all drops within protection domain of the presently claimed invention.

Claims (7)

1. a method for rapid extraction linseed oil, is characterized in that comprising the following steps:
(1) before extraction linseed oil is screened, predrying, pulverize, dry and cooling process;
(2) soxhlet extraction is adopted to measure the crude fat content of the raw material processed through step (1), with sherwood oil (30 ~ 60) for solvent;
(3), during extraction, the linseed meal after step (1) process is put into the material barrel of extraction kettle, by CO 2gas inject extraction kettle, in maintenance extraction kettle, temperature and pressure is at CO 2the supercritical state of gas also makes it to contact with linseed meal, makes linseed oil be dissolved in supercritical CO 2among fluid;
(4) supercutical fluid containing linseed oil is entered separating still from extraction kettle through throttling expansion and parse linseed oil, and collect.
2. the method for rapid extraction linseed oil according to claim 1, is characterized in that: described screening refers to be chosen the impurity in linseed oil and the raw material that goes mouldy.
3. the method for rapid extraction linseed oil according to claim 1, is characterized in that: described predrying be that linseed oil is put into baking oven, the water content of drying 24 hours linseed oil at 50 ~ 60 DEG C of temperature or drying to linseed oil is not more than 5%.
4. the method for rapid extraction linseed oil according to claim 1, is characterized in that: described pulverizing the linseed oil after predrying is put into crusher for crushing become 20 order ~ 40 object linseed meals.
5. the method for rapid extraction linseed oil according to claim 1, is characterized in that: described oven dry and cooling step are that linseed meal is put into baking oven, at 50 ~ 60 DEG C of temperature, dry 12 hours to linseed meal; Linseed meal after oven dry continues to stay in stoving oven and naturally cools to normal temperature.
6. the method for rapid extraction linseed oil according to claim 1, is characterized in that: described supercritical state temperature is 40 ~ 50 DEG C, and pressure is 65 ~ 70MPa; CO 2gas is 180 ~ 200kg/h by the flow of extraction kettle, and extraction time is 1 ~ 1.5h.
7. the method for rapid extraction linseed oil according to claim 1, is characterized in that: described collection puts into homogenizer by from the linseed oil with a collection of raw material abstraction, homogeneous rear filling, and lucifuge stored refrigerated.
CN201510997296.3A 2015-12-28 2015-12-28 Method for rapidly extracting linseed oil Pending CN105505564A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105733802A (en) * 2016-04-13 2016-07-06 上海本真食品有限公司 Flax seed oil capable of reducing high blood pressure, high blood lipid and high blood sugar and preparation method thereof
CN112592760A (en) * 2020-12-25 2021-04-02 北京市粮食科学研究院 Supercritical extraction method and device for crushing material under reduced pressure in machine
CN115669842A (en) * 2022-11-07 2023-02-03 中科京川(四川)生物科技有限公司 Unsaturated fatty acid-nervonic acid compound solid beverage and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN101457174A (en) * 2009-01-05 2009-06-17 中国农业大学 Method for quick-speed extracting flaxseed oil
CN103333740A (en) * 2013-07-16 2013-10-02 河北农业大学 Linseed oil and supercritical CO2 extraction method thereof
CN103881809A (en) * 2012-12-24 2014-06-25 项德才 Method for preparing flaxseed oil
CN104194924A (en) * 2014-07-31 2014-12-10 濮阳市天行健生物科技有限公司 Method for extracting linseed oil with supercritical CO2
CN105038971A (en) * 2015-08-09 2015-11-11 查光圣 Linseed oil supercritical fluid extraction technology

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101457174A (en) * 2009-01-05 2009-06-17 中国农业大学 Method for quick-speed extracting flaxseed oil
CN103881809A (en) * 2012-12-24 2014-06-25 项德才 Method for preparing flaxseed oil
CN103333740A (en) * 2013-07-16 2013-10-02 河北农业大学 Linseed oil and supercritical CO2 extraction method thereof
CN104194924A (en) * 2014-07-31 2014-12-10 濮阳市天行健生物科技有限公司 Method for extracting linseed oil with supercritical CO2
CN105038971A (en) * 2015-08-09 2015-11-11 查光圣 Linseed oil supercritical fluid extraction technology

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105733802A (en) * 2016-04-13 2016-07-06 上海本真食品有限公司 Flax seed oil capable of reducing high blood pressure, high blood lipid and high blood sugar and preparation method thereof
CN112592760A (en) * 2020-12-25 2021-04-02 北京市粮食科学研究院 Supercritical extraction method and device for crushing material under reduced pressure in machine
CN112592760B (en) * 2020-12-25 2023-11-03 北京市粮食科学研究院 Supercritical extraction method and device for crushing materials under reduced pressure in machine
CN115669842A (en) * 2022-11-07 2023-02-03 中科京川(四川)生物科技有限公司 Unsaturated fatty acid-nervonic acid compound solid beverage and preparation method thereof
CN115669842B (en) * 2022-11-07 2023-12-01 中科京川(四川)生物科技有限公司 Unsaturated fatty acid-nervonic acid compound solid beverage and preparation method thereof

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