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Microcapsule

A technology of microcapsules and dextran, which is applied in the direction of microcapsules, nanocapsules, capsule delivery, etc., can solve the problems that cannot meet the needs of embedding active ingredients, the particle size of microcapsules is large, and the embedding rate is low. Improve functional value and product attributes and consumer acceptance, increase the content of active substances, and reduce the effect of postprandial blood sugar

Inactive Publication Date: 2017-07-28
QINGHAI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Microencapsulation technology is already a very mature technology. The microcapsules formed by traditional microcapsule wall materials cannot meet the needs of embedding active ingredients in liquid state due to their large particle size, low embedding rate and difficulty in control.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1) Disperse 3g of crude barley β-glucan (70%) (equivalent to 2.1g of pure highland barley β-glucan (100%)) in 500mL of pure water, place it in a water bath at 80°C Put in a water bath for 1 hour, and keep stirring to fully dissolve the dextran. After the dissolving process was completed, the highland barley β-glucan aqueous solution was cooled to room temperature and then centrifuged. After the centrifugation, the precipitate was discarded, and the highland barley β-glucan solution was collected for later use.

[0049] 2) Then, 0.5 mL of 2-octenyl succinic anhydride (2-OSA) was added dropwise to 100 mL of highland barley β-glucan solution, and reacted at 55 °C for 4.5 h. During the reaction process, 3% (w / v) sodium hydroxide was used to control the pH of the system at about 8.0. After the reaction was completed, the system was cooled to room temperature and continued to stir. Finally, 2 mol / L hydrochloric acid was added dropwise to the reaction system to control the ...

Embodiment 2

[0053] 1) Disperse 300g of highland barley β-glucan crude product (70%) (equivalent to 210g of highland barley β-glucan (100%)) in 50L of pure water, place it in a water bath at 80°C for 1 hour, And keep stirring to fully dissolve the glucan. After the dissolution process is over, cool the highland barley β-glucan aqueous solution to room temperature and then centrifuge. After the centrifugation is completed, discard the precipitate and collect the highland barley β-glucan solution. spare.

[0054] 2) Then, 50mL of 2-octenyl succinic anhydride (2-OSA) was added dropwise to 10L of highland barley β-glucan solution, and reacted at 55°C for 4.5h. During the reaction process, 3% (w / v) sodium hydroxide was used to control the pH of the system at about 8.0. After the reaction was completed, the system was cooled to room temperature and continued to stir. Finally, 2 mol / L hydrochloric acid was added dropwise to the reaction system to control the pH of the system at about 6.0, and c...

Embodiment 4

[0062] The preparation of embodiment 4 microcapsules

[0063] Take the modified highland barley β-glucan and dissolve it in hot water to obtain 100ml of 2mg / ml modified highland barley β-glucan solution; mix it with 0.1g of black fruit wolfberry anthocyanin evenly, control the pH at 3.5, and heat it at 45°C Stir at low temperature for 30 minutes, centrifuge at high speed, and collect the precipitate to obtain anthocyanin microcapsules.

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Abstract

The invention provides a microcapsule which comprises an embedding material and an active component with poor stability, wherein the embedding material is modified beta-glucose. Unstable bioactive substances in a water-phase system are embedded by the aid of technique, so that the stability of the bioactive substances is improved.

Description

technical field [0001] The present invention relates to a kind of microcapsule. Background technique [0002] Microencapsulation technology is already a very mature technology. The microcapsules formed by traditional microcapsule wall materials cannot meet the needs of embedding active ingredients in liquid state due to their large particle size, low embedding rate and difficulty in control. . However, polysaccharides and oligosaccharides have become the focus of current research and are widely used in the transportation of biologically active substances. Polysaccharides can adsorb or embed active substances through non-covalent interactions as their transport carriers. Natural polysaccharides can also be hydrophobized to form amphiphilic polymers, which can spontaneously assemble in aqueous solution to form micelle-like particles with independent structures. Such hydrophobic polysaccharide carriers can not only significantly improve the stability of biologically active su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L33/125A23L33/105A23P10/30A61K9/51A61K47/36A61K31/352
CPCA23V2002/00A61K9/5161A61K31/352A23V2200/32
Inventor 王树林陈虎秦艳婷刘荟萃杭园园曹得霞
Owner QINGHAI UNIVERSITY
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