CN102429215A - Linolenic acid microcapsules and preparation method thereof - Google Patents
Linolenic acid microcapsules and preparation method thereof Download PDFInfo
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- CN102429215A CN102429215A CN2011103238499A CN201110323849A CN102429215A CN 102429215 A CN102429215 A CN 102429215A CN 2011103238499 A CN2011103238499 A CN 2011103238499A CN 201110323849 A CN201110323849 A CN 201110323849A CN 102429215 A CN102429215 A CN 102429215A
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Abstract
The invention relates to linolenic acid microcapsules and a preparation method thereof. The preparation method comprises the following steps of: adopting the linseed oil as the raw material to prepare the linolenic acid of which the purity is 70-90%; uniformly mixing the linolenic acid of which the purity is 70-90%, linseed gum and water, and heating to 50-60 DEG C; homogenizing at 30-40 MPa for 30 min to obtain the emulsion liquid; finally atomizing and drying the emulsion liquid to prepare the microcapsules. The linolenic acid microcapsules prepared by the invention has the advantages that the microcapsules have long shelf-life and high oil content rate which is up to 60%. The linolenic acid microcapsules adopt the high-pure linolenic acid, so the active component Alpha-linolenic acid of the microcapsules in unit mass is increased for two times; the linolenic acid microcapsules and the preparation method thereof switch the linseed oil into the linolenic acid, the water solubility of the linolenic acid is improved, and the compatibility between the linolenic acid and the linseed gum is improved, so the emulsification before atomizing and drying can be smoothly implemented, the emulsifying agent does not need to use, and the edible safety of the microcapsules can be ensured; and the linolenic acid microcapsules and the preparation method thereof adopt the linseed gum as the wall material of the microcapsules, so that the use of the linseed gum is enlarged.
Description
Technical field
The present invention relates to a kind of capsule and preparation method thereof, relate in particular to a kind of linolenic acid microcapsule and preparation method thereof.
Background technology
Flax is a flax family (Linaceae), linum is annual or herbaceos perennial, is one of main economic crops in China, also is the main oil crops of China North China, northwest extremely frigid zones.Linseed is the seed of flax, contains compositions such as fat, protein, edible fiber and viscose.Linseed oil is claimed linseed oil again, is the oil of from linseed, producing, and contains 45～53% alpha-linolenic acids, 19～29% oleic acid, 14～18% linoleic acid, 9～11% saturated fatty acids.
As everyone knows, alpha-linolenic acid is universally acknowledged essential fatty acid, and human body can not self synthesize, and can only from food, absorb.A large amount of scientific research both at home and abroad shows that alpha-linolenic acid has very important using value at aspects such as improving human nutrition structure and enhancing health; As find that alpha-linolenic acid grows infant's brain; Regulate immune system, all there is certain effect aspects such as reducing blood lipid, reduction blood viscosity and inhibition malignant tumour.Because alpha-linolenic acid is prone to oxidation deterioration in processes such as production and processing, storage and culinary art, produce unpleasant stench flavor, this not only influences its edible safety, also influences popularizing and promoting of it, and then finally has a strong impact on the performance of its nutrition and health care function.In addition, liquid alpha-linolenic acid also is difficult to be added in the daily bread (like noodles, bread), makes people become a great problem to its picked-up.
Microcapsules are meant miniature vessel with polymeric shell wall or the packing material of being processed by natural or artificial synthetic macromolecular material.Microcapsules technology can change physical form, protection sensitive composition, isolates active material and reduce volatility etc.In recent years, microcapsules technology is one of focus that attracts people's attention in high added value oil and fat product preparation field.
Find that under study for action existing a lot of documents are mentioned the microcapsules technology that leukotrienes is relevant, but prior art all is to be that the wall material is produced microcapsules with gelatin, Arabic gum and modified starch etc.; A large amount of synthetic emulsifiers need be used in the production process, the microcapsules edible safety can be influenced, in addition; Existing microcapsule wall material is sealed bad; Cause wall material use amount big, as document usually the microcapsules oil content of report less than 40%, linolenic acid content less than 18% in the microcapsules of unit mass.
Summary of the invention
The present invention is directed to the above-mentioned deficiency that existing linolenic acid microcapsule exists, a kind of linolenic acid microcapsule and preparation method thereof is provided.
The technical scheme that the present invention solves the problems of the technologies described above is following: a kind of preparation method of linolenic acid microcapsule may further comprise the steps:
Step 1: the employing linseed oil is 70～90% leukotrienes for feedstock production purity;
Step 2: with purity is that 70～90% leukotrienes, flax glue and water mix; Be warming up to 50～60 ℃; Under pressure 30～40MPa, processed stable emulsion in high-pressure homogeneous 30 minutes; Wherein, the mass ratio of said leukotrienes and flax glue is no more than 3: 2, and the quality of said water is flax glue and leukotrienes mixture quality 6～10 times;
Step 3: emulsion is carried out preparing microcapsules after the spray-drying, and drying parameter is: feeding temperature is 50～60 ℃, and EAT is 170～230 ℃, and leaving air temp is 70～90 ℃.
On the basis of technique scheme, the present invention can also do following improvement.
Further, when step 1 when to adopt urea adduct method to prepare purity be 70～90% leukotrienes, its concrete process conditions are: is 1: 4 mixing with 1mol/L KOH-EtOH solution by mass ratio with linseed oil;, add watery hydrochloric acid and regulate pH to 1～1.5 to fully saponified 60 ℃ of stirred in water bath 1～2 hour, with n-hexane extraction 2 times; Merge the upper strata oily liquids; Water is washed till neutrality, reclaims n-hexane, promptly gets fatty acid mixed; Fatty acid mixed, urea and ethanol are successively joined in the reaction vessel by mass ratio at 1: 3: 5,75 ℃ down stir 1 hour after, left standstill 12 hours in-15 ℃, remove by filter crystallization; Filtrating adds urea once more, and repeat to stir, leave standstill and filtration etc. operated 1～3 time, reclaims ethanol, promptly gets high-purity leukotrienes.What be worth to stress is, more stable in order to make high-purity alpha-linolenic acid, also can further process ethyl linolenate or methyl linolenate etc.
Further, when step 1 when to adopt molecularly distilled to prepare purity be 70～90% leukotrienes, its concrete process conditions are: distillation pressure 0.2～0.3Pa, and 120 ℃ of vapo(u)rizing temperatures, knifing rotating speed 200r/min distills 2～4 times.
In spray process, air intake and leaving air temp are the key factors of product quality.Too high temperature can make the exterior wall material of microcapsules produce slight crack, influences the effect of packing.Temperature is the moisture height of low production too, and product should not keep.
The invention has the beneficial effects as follows: the present invention is interior bag thing with high-purity leukotrienes; With processing linseed oil gained byproduct flax glue is the wall material; The natural form that exists of simulation linseed prepares linolenic acid microcapsule, and the linolenic acid microcapsule of preparation has the preservation of being prone to, the microcapsules oil content is up to 60% advantage; Select high-purity leukotrienes for use, linolenic acid content improves nearly twice in the microcapsules of unit mass thereby make; Convert linseed oil to leukotrienes, can avoid the use of the preceding emulsifying agent of spray-drying, to guarantee edible safety; Expanded the purposes of flax glue simultaneously.
The specific embodiment
Below principle of the present invention and characteristic are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
Flax glue is to be raw material with the linseed, from the flax seed husk skin, extract and get, flax glue be a kind of be main with polysaccharide; The natural polymer natural plant gum that contains a small amount of protein; Characteristics such as have that viscosity height, emulsibility are strong, moisture retention and suspension stability are outstanding, edible safety is one of glue kind that is developing in the world at present; And be the auxiliary material that in the process of processing linseed, obtains, when saving resource, improved the quality of product.With flax glue inclusion leukotrienes is the natural form that exists of having imitated linseed, the nutritional labeling of bag thing in can better preserving.
Embodiment 1
At first, the employing linseed oil is a raw material, and it is 70% leukotrienes that urea adduct method prepares purity; Then, be that 70% leukotrienes, flax glue and water mix the back with mass ratio and carries out high-pressure homogeneous processing after 30 minutes at 30MPa at 2: 3: 30 with purity; At last, will be through the flax glue after the high-pressure homogeneous processing and linolenic mixture with 50 ℃ of chargings of temperature, EAT is 170 ℃, leaving air temp is to carry out preparing microcapsules after the spray-drying under 70 ℃ of conditions.
The oil content of the linolenic acid microcapsule of process embodiment 1 preparation is 40%, and the microcapsules leukotrienes of unit mass is 28%.
Embodiment 2
At first, adopting linseed oil is 90% leukotrienes for the raw material urea adduct method prepares purity; Then, be that 90% leukotrienes, flax glue and water mix the back with mass ratio and carries out high-pressure homogeneous processing at 40MPa at 3: 2: 50 with purity; At last, will be through the flax glue after the high-pressure homogeneous processing and linolenic mixture with 60 ℃ of chargings of temperature, EAT is 230 ℃, leaving air temp is to carry out preparing microcapsules after the spray-drying under 90 ℃ of conditions.
The oil content of the linolenic acid microcapsule of process embodiment 2 preparations is 60%, and the microcapsules linolenic acid content of unit mass is 54%.
Embodiment 3
At first, adopting linseed oil is that raw molecule distillation preparation purity is 80% leukotrienes; Then, be that 80% leukotrienes and water mix the back with mass ratio and carries out high-pressure homogeneous processing at 35MPa at 1: 1: 16 with flax glue, purity; At last, will be through the flax glue after the high-pressure homogeneous processing and linolenic mixture with 55 ℃ of chargings, EAT is 210 ℃, leaving air temp is to carry out preparing microcapsules after the spray-drying under 80 ℃ of conditions.
The oil content of the linolenic acid microcapsule of process embodiment 3 preparations is 50%, and the microcapsules linolenic acid content of unit mass is 40%.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. the preparation method of a linolenic acid microcapsule is characterized in that, said preparation method may further comprise the steps:
Step 1: the employing linseed oil is 70～90% leukotrienes for feedstock production purity;
Step 2: purity is 70～90% leukotrienes, flax glue and water mixing and is warming up to 50～60 ℃; Under pressure 30～40MPa, processed emulsion in high-pressure homogeneous 30 minutes; Wherein, The mass ratio of said leukotrienes and flax glue is up to 3: 2, and the quality of said water is flax glue and leukotrienes mixture quality 6～10 times;
Step 3: emulsion is carried out preparing microcapsules after the spray-drying.
2. according to the preparation method of the said linolenic acid microcapsule of claim 1, it is characterized in that, when step 1 when to adopt urea adduct method to prepare purity be 70～90% leukotrienes; Its concrete process conditions are: is mixing in 1: 4 with linseed oil and 1mol/L KOH-EtOH solution by mass ratio;, add watery hydrochloric acid and regulate pH to 1～1.5 to fully saponified 60 ℃ of stirred in water bath 1～2 hour, with n-hexane extraction 2 times; Merge the upper strata oily liquids; Water is washed till neutrality, reclaims n-hexane, promptly gets fatty acid mixed; Fatty acid mixed, urea and ethanol are successively joined reaction vessel by mass ratio at 1: 3: 5,75 ℃ down stir 1 hour after, left standstill 12 hours in-15 ℃, remove by filter crystallization; Filtrating adds urea once more, and repeat to stir, leave standstill and filtration etc. operated 1～3 time, reclaims ethanol, promptly gets high-purity leukotrienes.
3. according to the preparation method of the said linolenic acid microcapsule of claim 1; It is characterized in that; When step 1 when to adopt molecularly distilled to prepare purity be 70～90% leukotrienes, its concrete process conditions are: distillation pressure 0.2～0.3Pa, 120 ℃ of vapo(u)rizing temperatures; Knifing rotating speed 200r/min distills 2～4 times.
4. according to the preparation method of the said linolenic acid microcapsule of claim 1, it is characterized in that, flax glue is scattered in 50～60 ℃ the water, add purity again and be 70～90% leukotrienes and mix.
5. according to the preparation method of the said linolenic acid microcapsule of claim 1, it is characterized in that spray-dired feeding temperature is 50～60 ℃ in the said step 3, EAT is 170～230 ℃, and leaving air temp is 70～90 ℃.
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| CN2011103238499A CN102429215B (en) | 2011-10-24 | 2011-10-24 | Linolenic acid microcapsules and preparation method thereof |
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Cited By (6)
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| CN102934703A (en) * | 2012-11-13 | 2013-02-20 | 中国食品发酵工业研究院 | Flaxseed oil microcapsule and production method thereof |
| CN103053910A (en) * | 2013-01-29 | 2013-04-24 | 李太和 | Method for producing omega-3 fatty acid food additive |
| CN103263013A (en) * | 2013-05-31 | 2013-08-28 | 烟台燕园科玛生物技术开发有限公司 | Method for preparing alpha-linolenic acid powder by adopting spray drying |
| CN103263401A (en) * | 2013-05-23 | 2013-08-28 | 吉林大学 | Pinenut oil pinolenic acid microcapsule and preparation method thereof |
| CN103461988A (en) * | 2013-07-29 | 2013-12-25 | 河北欣奇典生物科技有限公司 | High-content alpha-linolenic acid microcapsule and manufacturing method thereof |
| CN108433109A (en) * | 2018-03-12 | 2018-08-24 | 云南雪域印象生物科技有限公司 | Nutrient powder |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102934703A (en) * | 2012-11-13 | 2013-02-20 | 中国食品发酵工业研究院 | Flaxseed oil microcapsule and production method thereof |
| CN102934703B (en) * | 2012-11-13 | 2015-07-15 | 中国食品发酵工业研究院 | Flaxseed oil microcapsule and production method thereof |
| CN103053910A (en) * | 2013-01-29 | 2013-04-24 | 李太和 | Method for producing omega-3 fatty acid food additive |
| CN103263401A (en) * | 2013-05-23 | 2013-08-28 | 吉林大学 | Pinenut oil pinolenic acid microcapsule and preparation method thereof |
| CN103263013A (en) * | 2013-05-31 | 2013-08-28 | 烟台燕园科玛生物技术开发有限公司 | Method for preparing alpha-linolenic acid powder by adopting spray drying |
| CN103263013B (en) * | 2013-05-31 | 2014-02-26 | 烟台燕园科玛生物技术开发有限公司 | Method for preparing alpha-linolenic acid powder by adopting spray drying |
| CN103461988A (en) * | 2013-07-29 | 2013-12-25 | 河北欣奇典生物科技有限公司 | High-content alpha-linolenic acid microcapsule and manufacturing method thereof |
| CN103461988B (en) * | 2013-07-29 | 2015-05-13 | 河北欣奇典生物科技有限公司 | High-content alpha-linolenic acid microcapsule and manufacturing method thereof |
| CN108433109A (en) * | 2018-03-12 | 2018-08-24 | 云南雪域印象生物科技有限公司 | Nutrient powder |
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