CN107904023A - A kind of method that remaining grease is extracted in the dry shrimp slag from krill degreasing - Google Patents
A kind of method that remaining grease is extracted in the dry shrimp slag from krill degreasing Download PDFInfo
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- CN107904023A CN107904023A CN201711394965.3A CN201711394965A CN107904023A CN 107904023 A CN107904023 A CN 107904023A CN 201711394965 A CN201711394965 A CN 201711394965A CN 107904023 A CN107904023 A CN 107904023A
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- slag
- extraction
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- pressure
- grease
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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
- C11B13/00—Recovery of fats, fatty oils or fatty acids from waste materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Abstract
The invention discloses a kind of method that remaining grease is extracted in dry shrimp slag from krill degreasing, include the following steps:1) by the dry shrimp sizing powder of krill degreasing, sieving, shrimp ground-slag is obtained;2) ethanol of setting concentration is added into shrimp ground-slag, carries out ultra high pressure extraction, the pressure of ultra high pressure extraction is 580 600MPa, and pressurize setting time, after release, repeats pressurised extraction 13 times, the pressure of extraction is 580 600MPa;3) material after release is taken out, filtering, boils off ethanol, obtain grease.Using ethanol as Extraction solvent, when being extracted using superhigh pressure extracting method to the grease in dry shrimp slag, extraction pressure is set as 600MPa or so, pressurize after a certain period of time, release, then 600MPa or so is boosted to again, effectively the grease in dry shrimp slag after degreasing can be extracted, and achieve higher oil yield, improve the lipid-producing of krill, cost is reduced, improves the competitiveness of product.
Description
Technical field
The present invention relates to a kind of method that grease is extracted in dry shrimp slag from krill degreasing, belong to food, chemistry and doctor
Medicine field.
Background technology
Krill is that the living resources for the substantial amounts for living in South Pole ocean (there are about hundred million tons of 5-50, different estimations
Method is variant).Krill grease rich content, fat content is because of season, age, gender, the abundant degree of food, environment
It is variant etc. factor.Contain abundant unrighted acid (such as EPA, DHA, DPA), astaxanthin and its fat, phosphorus in grease
The nutritional ingredients such as fat, vitamin E.At present, krill grease is the high value added product widely sold in the world, the former South Pole
Krill shrimp sauce product mainly originates from Canada, Japan, Norway, the U.S..After 2009, China have multiple producers start to produce it is attached
Close the euphausia superba sauce of international standard.
The method that shrimp sauce is extracted from krill is mainly that krill is scattered in the mixing of organic solvent or different organic solvents
Extracted in liquid, the protein content in the dry shrimp slag of remaining krill has reached more than 74%, the dry shrimp slag of the krill after degreasing
In ash content and the percentage composition of the material such as amino acid have certain rise both relative to unskimmed krill.And pass through degreasing
Afterwards, the most grease in krill (shrimp sauce) has been extracted, and remaining a small amount of fat residue is in shrimp slag, this part oil
Fat, which is difficult to reuse traditional shrimp sauce extracting method, to be extracted.
So do not have the research that degreasing is carried out to the dry shrimp slag of krill after degreasing also in the prior art, and it is existing
Krill degreasing method be difficult to apply in the degreasing of the dry shrimp slag of the krill after degreasing, the dry shrimp slag of krill after degreasing
Degreasing whether can be continued and how degreasing becomes a new research topic.
The content of the invention
For above-mentioned technical problem existing in the prior art, the object of the present invention is to provide one kind from krill degreasing
The method that remaining grease is extracted in dry shrimp slag, this method can further extract remaining a small amount of grease in the dry shrimp slag of degreasing,
The lipid-producing of krill is improved, improves the competitiveness of shrimp sauce product.
In order to solve the above technical problems, the technical scheme is that:
A kind of method that remaining grease is extracted in dry shrimp slag from krill degreasing, includes the following steps:
1) by the dry shrimp sizing powder of krill degreasing, sieving, shrimp ground-slag is obtained;
2) ethanol of setting concentration is added into shrimp ground-slag, carries out ultra high pressure extraction, the pressure of ultra high pressure extraction is 580-
600MPa, pressurize setting time, after release, repeats pressurised extraction 1-3 times, the pressure of extraction is 580-600MPa;
3) material after release is taken out, filtering, boils off ethanol, obtain grease.
Ultra high pressure extraction full name is " extraction of superelevation isostatic cool pressing ", is the hydrostatic pressure for using super-pressure at normal temperatures
In feed liquid, kept for certain time in predetermined pressure, thing external and internal pressure to be extracted is reached balance, (it is flat that active ingredient reaches dissolving
Weighing apparatus) rapid release afterwards, increase material inside and outside permeable pressure head, the active ingredient in material is transferred in extracting solution, reaches extraction
The purpose of target component.Pressure has large effect to the extractability of solvent, by the use of superhigh pressure extracting method, by the use of ethanol as
For astaxanthin in Extraction solvent prawn when grease is extracted, extraction pressure is the oil such as astaxanthin in the range of 200-400MPa
The extracted amount of fat is maximum, and more than 400MPa, extracted amount is decreased obviously.So when this area uses ethanol as Extraction solvent, one
As the grease in krill is extracted using the extraction pressure of 200-400MPa, but even if using the extraction pressure into
Row extraction, can still remain more grease in the dry shrimp slag after degreasing, can with reasonable prediction, using ethanol as Extraction solvent,
It is difficult to effectively extract the remaining grease in dry shrimp slag using the extraction pressure of 200-400MPa.
Inventor has found through overtesting, using ethanol as Extraction solvent, using superhigh pressure extracting method in dry shrimp slag
Grease when being extracted, extraction pressure is set as 600MPa or so, after a certain period of time, release, then boosts again for pressurize
To 600MPa or so, effectively the grease in dry shrimp slag after degreasing can be extracted, this belongs to a breakthrough hair
It is existing, overcome the technology prejudice of this area.
Preferably, in step 1), the shrimp ground-slag crosses 80 mesh sieves.
Inventor has found that the granularity of shrimp ground-slag directly affects the specific surface area that shrimp ground-slag is contacted with solvent, and
Under different solvents, the influence of the granule size of shrimp ground-slag to the extraction effect of grease is different.And extraction pressure is in difference
Shrimp ground-slag particle diameter under to grease extraction there are different influences.Found by verification, superhigh pressure extracting method of the invention
During with the combination of particle size of the shrimp ground-slag, preferable extraction effect can be obtained, and the particle mean size of shrimp ground-slag it is excessive or it is too small all
It can influence the extraction effect of grease.
Preferably, in step 2), the mass concentration of the ethanol of addition is 85-100%.
It is further preferred that in step 2), the addition quality of ethanol is 8-20 times of shrimp ground-slag quality, is preferably 10-20
Times.To ensure that the grease in shrimp ground-slag is preferably extracted.
Preferably, in step 2), the pressure of ultra high pressure extraction is 600MPa.
Preferably, in step 2), the dwell time of ultra high pressure extraction is 10-15min.
Preferably, in step 2), the number for repeating pressurised extraction is 1 time.Repeat pressurised extraction can obtain for 1 time it is good
Grease extraction effect, repeats the increase of pressurised extraction number, oil yield, which has no, to be significantly improved.
Preferably, in step 3), by filtrate, rotary evaporation removes solvent under the conditions of 68-73 DEG C, obtains grease.
Beneficial effects of the present invention are:
, will when being extracted using superhigh pressure extracting method to the grease in dry shrimp slag using ethanol as Extraction solvent
Extraction pressure is set as 600MPa or so, and after a certain period of time, release, then boosts to 600MPa or so again for pressurize, can
Effectively the grease in dry shrimp slag after degreasing is extracted, and achieves higher oil yield, improves krill
Lipid-producing, reduces cost, improves the competitiveness of product.
Embodiment
It is noted that described further below is all illustrative, it is intended to provides further instruction to the application.It is unless another
Indicate, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Embodiment one
By the dry shrimp slag of 6kg krill degreasings (aqueous≤7%, mass percent), load flour mill funnel, by per minute
0.5kg dischargings, 8000 revs/min of rotating speed.Levigate shrimp ground-slag crosses 80 mesh sieves.Remaining dry shrimp slag is ground under identical condition
Powder, until the dry shrimp slags of whole are all able to levigate, 80 mesh sieves excessively.
85% ethanol 500ml is added in the shrimp ground-slag for crossing 80 mesh to 50g, is placed on pressurised extraction in extra-high tension unit, pressure
For 600MPa, the dwell time is 10 minutes.Then unload and be depressed into normal pressure, do not take out material.Repeat above extraction process once.Take out
Material, filtering after stirring uniformly.Filtrate rotary evaporation under the conditions of 68-73 DEG C.Obtain oily 2.6g, oil yield 5.2%.
Embodiment two
By the dry shrimp slag of 6kg krill degreasings (aqueous≤7%, mass percent), load flour mill funnel, by per minute
0.8kg dischargings, 8000 revs/min of rotating speed.Levigate shrimp ground-slag crosses 80 mesh sieves.Remaining dry shrimp slag is ground under identical condition
Powder, until whole shrimp slags are all able to levigate, 80 mesh sieves excessively.
95% ethanol 500ml is added in the shrimp ground-slag for crossing 80 mesh to 50g, is placed on pressurised extraction in extra-high tension unit, pressure
For 600MPa, the dwell time is 15 minutes.Then unload and be depressed into normal pressure, do not take out material.Repeat above procedure once.Extract
Material, filtering after stirring uniformly.Filtrate rotary evaporation under the conditions of 68-73 DEG C.Obtain oily 2.7g, oil yield 5.4%.
Embodiment three
By the dry shrimp slag of 6kg krill degreasings (aqueous≤7%, mass percent), load flour mill funnel, by per minute
0.6kg dischargings, 8000 revs/min of rotating speed.Levigate shrimp med crosses 80 mesh sieves.Remaining slag is milled under identical condition, until
Whole shrimp slags are all able to levigate, 80 mesh sieves excessively.
The shrimp ground-slag that 80 mesh are crossed to 50g adds absolute ethyl alcohol 500ml, is placed on pressurised extraction in extra-high tension unit, pressure is
600MPa, dwell time are 12 minutes.Then unload and be depressed into normal pressure, do not take out material.Repeat above procedure once.Take out material,
Filtering after agitation uniformly.Filtrate rotary evaporation under the conditions of 68-73 DEG C.Obtain oily 2.5g, oil yield 5%.
Comparative example one
With being distinguished as embodiment one:The shrimp ground-slag that 80 mesh are crossed to 50g adds 85% ethanol 500ml, is placed on super-pressure and sets
Standby middle pressurised extraction, pressure 600MPa, dwell time are 10 minutes.Then unload and be depressed into normal pressure, not repeatedly pressurised extraction mistake
Journey, directly takes out material, filtering after stirring uniformly.Filtrate rotary evaporation under the conditions of 68-73 DEG C.Oily 0.5g is obtained, oil yield is
1%.
Comparative example two
With being distinguished as embodiment one:The shrimp ground-slag that 80 mesh are crossed to 50g adds 85% ethanol 500ml, is placed on super-pressure and sets
Standby middle pressurised extraction, pressure 300MPa, dwell time are 10 minutes.Then unload and be depressed into normal pressure, do not take out material.More than repeating
Extraction process is once.Material is taken out, filtering after stirring uniformly.Filtrate rotary evaporation under the conditions of 68-73 DEG C.Oily 0.6g is obtained, is obtained
Oil cut rate is 1.2%.
Comparative example three
With being distinguished as embodiment one:The shrimp ground-slag that 80 mesh are crossed to 50g adds 85% ethanol 500ml, is placed on super-pressure and sets
Standby middle pressurised extraction, pressure 300MPa, dwell time are 10 minutes.Then unload and be depressed into normal pressure, do not take out material.Repeat to pressurize
To 600MPa, pressurize is for a period of time.Material is taken out, filtering after stirring uniformly.Filtrate rotary evaporation under the conditions of 68-73 DEG C.
Oily 0.8g, oil yield 1.6%.
Comparative example four
With being distinguished as embodiment one:The shrimp ground-slag that 80 mesh are crossed to 50g adds 85% ethanol 500ml, is placed on super-pressure and sets
Standby middle pressurised extraction, pressure 600MPa, dwell time are 10 minutes.Then unload and be depressed into normal pressure, do not take out material.Repeat to pressurize
To 400MPa, pressurize is for a period of time.Material is taken out, filtering after stirring uniformly.Filtrate rotary evaporation under the conditions of 68-73 DEG C.
Oily 1g, oil yield 2%.
The foregoing is merely the preferred embodiment of the application, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. the method for remaining grease is extracted in a kind of dry shrimp slag from krill degreasing, it is characterised in that:Include the following steps:
1) the dry shrimp slag of krill degreasing is milled, sieves, obtain shrimp ground-slag;
2) ethanol of setting concentration is added into shrimp ground-slag, carries out ultra high pressure extraction, the pressure of ultra high pressure extraction is 580-
600MPa, pressurize setting time, after release, repeats pressurised extraction 1-3 times, the pressure of extraction is 580-600MPa;
3) material after release is taken out, filtering, boils off ethanol, obtain grease.
2. according to the method described in claim 1, it is characterized in that:In step 1), the shrimp ground-slag crosses 80 mesh sieves.
3. according to the method described in claim 1, it is characterized in that:In step 2), the mass concentration of the ethanol of addition is 85-
100%.
4. according to the method described in claim 3, it is characterized in that:In step 2), the addition quality of ethanol is shrimp ground-slag quality
8-20 times.
5. according to the method described in claim 4, it is characterized in that:The addition quality of ethanol is 10-20 times of shrimp ground-slag quality.
6. according to the method described in claim 1, it is characterized in that:In step 2), the pressure of ultra high pressure extraction is 600MPa.
7. according to the method described in claim 6, it is characterized in that:In step 2), the dwell time of ultra high pressure extraction is 10-
15min。
8. according to the method described in claim 1, it is characterized in that:In step 2), the number for repeating pressurised extraction is 1 time.
9. according to the method described in claim 1, it is characterized in that:In step 3), filtrate is rotated to steaming under the conditions of 68-73 DEG C
Hair removes solvent, obtains grease.
10. according to the method described in claim 9, it is characterized in that:In step 3), the temperature of rotary evaporation is 70 DEG C.
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CN201711394965.3A CN107904023B (en) | 2017-12-21 | 2017-12-21 | Method for extracting residual grease from degreased dried shrimp residues of Antarctic krill |
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CN201711394965.3A CN107904023B (en) | 2017-12-21 | 2017-12-21 | Method for extracting residual grease from degreased dried shrimp residues of Antarctic krill |
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CN111139126A (en) * | 2020-01-14 | 2020-05-12 | 广东海洋大学 | Extraction method and application of fish oil |
CN114525168A (en) * | 2022-01-04 | 2022-05-24 | 中国水产科学研究院东海水产研究所 | Method for extracting antarctic krill oil from antarctic krill powder raw material |
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CN114525168A (en) * | 2022-01-04 | 2022-05-24 | 中国水产科学研究院东海水产研究所 | Method for extracting antarctic krill oil from antarctic krill powder raw material |
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