CN102429215B - Linolenic acid microcapsules and preparation method thereof - Google Patents
Linolenic acid microcapsules and preparation method thereof Download PDFInfo
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- CN102429215B CN102429215B CN2011103238499A CN201110323849A CN102429215B CN 102429215 B CN102429215 B CN 102429215B CN 2011103238499 A CN2011103238499 A CN 2011103238499A CN 201110323849 A CN201110323849 A CN 201110323849A CN 102429215 B CN102429215 B CN 102429215B
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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 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 the compositions such as fat, protein, edible fiber and viscose.Linseed oil claims again linseed oil, is the oil of producing from linseed, 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 absorb from food.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 the aspects such as reducing blood lipid, reduction blood viscosity and inhibition malignant tumour.Because alpha-linolenic acid is easy oxidation deterioration in the processes such as production and processing, storage and culinary art, produces unpleasant stench flavor, this not only affects its edible safety, also affects 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 (such as noodles, bread), makes people become a great problem to its picked-up.
Microcapsules refer to the miniature vessel with polymeric shell wall or the packing material made by natural or artificial synthetic macromolecular material.Microcapsules technology can change physical form, protection sensitive composition, isolation 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 under study for action, existing a lot of documents are mentioned the microcapsules technology that leukotrienes is relevant, but prior art all is to produce microcapsules take gelatin, Arabic gum and modified starch etc. as the wall material, need to use a large amount of synthetic emulsifiers in the production process, can affect the microcapsules edible safety, in addition, existing microcapsule wall material is sealed bad, cause wall material use amount large, 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 existing linolenic acid microcapsule above shortcomings, 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 as follows: a kind of preparation method of linolenic acid microcapsule may further comprise the steps:
Step 1: adopting linseed oil is that to prepare purity be 70～90% leukotrienes to raw material;
Step 2: be that 70～90% leukotrienes, flax glue and water mix with purity, be warming up to 50～60 ℃, under pressure 30～40MPa, made stable emulsion in high-pressure homogeneous 30 minutes, wherein, the mass ratio of described leukotrienes and flax glue is no more than 3: 2, and the quality of described 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: be to mix at 1: 4 in mass ratio with linseed oil and 1mol/L KOH-EtOH solution,, 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, wash with water to neutrality, reclaim n-hexane, namely get fatty acid mixed; Fatty acid mixed, urea and ethanol are successively joined in the reaction vessel in mass ratio at 1: 3: 5,75 ℃ lower stir 1 hour after, left standstill 12 hours in-15 ℃, remove by filter crystallization; Filtrate adds urea again, and repeat to stir, leave standstill and filtration etc. operates 1～3 time, and Recycled ethanol namely gets high-purity leukotrienes.What be worth emphasizing is, more stable in order to make high-purity alpha-linolenic acid, also can further make 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, affects 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 take high-purity leukotrienes as interior bag thing, take processing linseed oil gained byproduct flax glue as the wall material, the natural form that exists of simulation linseed prepares linolenic acid microcapsule, and the linolenic acid microcapsule of preparation has easy preservation, the microcapsules oil content is up to 60% advantage; Select high-purity leukotrienes, 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 front emulsifying agent of spray-drying, to guarantee edible safety; Expanded simultaneously the purposes of flax glue.
The specific embodiment
Below principle of the present invention and feature are described, institute only gives an actual example and to be used for explanation the present invention, is not be used to limiting scope of the present invention.
Flax glue is as raw material take linseed, from the flax seed husk skin, extract and get, flax glue is a kind of take polysaccharide as main, the natural polymer natural plant gum that contains a small amount of protein, the 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, in saving resource, improved the quality of product.The natural form that exists of having imitated linseed with flax glue inclusion leukotrienes, the nutritional labeling that can better preserve interior bag thing.
Embodiment 1
At first, the employing linseed oil is raw material, and it is 70% leukotrienes that urea adduct method prepares purity; Then, be to carry out high-pressure homogeneous processing after 30 minutes at 30MPa after 70% leukotrienes, flax glue and water mix with mass ratio at 2: 3: 30 with purity; At last, with the temperature 50 C charging, EAT is 170 ℃ with the flax glue after high-pressure homogeneous processing and linolenic mixture, and 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 that to prepare purity be 90% leukotrienes to the raw material urea adduct method; Then, be to carry out high-pressure homogeneous processing at 40MPa after 90% leukotrienes, flax glue and water mix with mass ratio at 3: 2: 50 with purity; At last, with the temperature 60 C charging, EAT is 230 ℃ with the flax glue after high-pressure homogeneous processing and linolenic mixture, and 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 to carry out high-pressure homogeneous processing at 35MPa after 80% leukotrienes and water mix with mass ratio at 1: 1: 16 with flax glue, purity; At last, with 55 ℃ of chargings, EAT is 210 ℃ with the flax glue after high-pressure homogeneous processing and linolenic mixture, and 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 only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, 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, described preparation method may further comprise the steps:
Step 1: adopting linseed oil is that to prepare purity be 70～90% leukotrienes to raw material;
Step 2: be 70～90% leukotrienes, flax glue and water mixing with purity and be warming up to 50～60 ℃, under pressure 30～40MPa, made emulsion in high-pressure homogeneous 30 minutes, wherein, the mass ratio of described leukotrienes and flax glue is up to 3: 2, and the quality of described water is flax glue and leukotrienes mixture quality 6～10 times;
Step 3: emulsion is carried out preparing microcapsules after the spray-drying.
2. the preparation method of described linolenic acid microcapsule according to 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: be to mix at 1: 4 in mass ratio with linseed oil and 1mol/L KOH-EtOH solution, 60 ℃ of stirred in water bath 1～2 hour to fully saponified, add watery hydrochloric acid and regulate pH to 1～1.5, with n-hexane extraction 2 times, merge the upper strata oily liquids, wash with water to neutrality, reclaim n-hexane, namely get fatty acid mixed; Fatty acid mixed, urea and ethanol are successively joined reaction vessel in mass ratio at 1: 3: 5,75 ℃ lower stir 1 hour after, left standstill 12 hours in-15 ℃, remove by filter crystallization; Filtrate adds urea again, and repeat to stir, leave standstill and filtration etc. operates 1～3 time, and Recycled ethanol namely gets high-purity leukotrienes.
3. the preparation method of described linolenic acid microcapsule according to 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. the preparation method of described linolenic acid microcapsule according to claim 1 is characterized in that, flax glue is scattered in 50～60 ℃ the water, adds purity again and is 70～90% leukotrienes and mix.
5. the preparation method of described linolenic acid microcapsule according to claim 1 is characterized in that spray-dired feeding temperature is 50～60 ℃ in the described step 3, and 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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| CN2011103238499A CN102429215B (en) | 2011-10-24 | 2011-10-24 | Linolenic acid microcapsules and preparation method thereof |
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| CN102429215B true CN102429215B (en) | 2013-05-01 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN103053910B (en) * | 2013-01-29 | 2014-05-14 | 李太和 | Method for producing omega-3 fatty acid food additive |
| CN103263401B (en) * | 2013-05-23 | 2014-10-08 | 吉林大学 | Pinenut oil pinolenic acid microcapsule and preparation method thereof |
| 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 |
| 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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| US20050181019A1 (en) * | 2003-07-03 | 2005-08-18 | Slim-Fast Foods Company, Division Of Conopco, Inc. | Nutrition bar |
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