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Preparation method and product of gliadin microcapsules

A technology of gliadin and microcapsules, which is applied in the field of preparation of gliadin microcapsules, can solve the problems of unfavorable large-scale production and difficulty in meeting the production requirements of synthetic polymers, and achieve the effect of good dispersion and simple operation

Active Publication Date: 2022-04-15
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the fields involved in microcapsules have strict requirements on the safety, degradability and edibility of materials, the existing synthetic polymers have been difficult to meet the production requirements
[0003] Glamin is a biopolymer that is safe, non-toxic, edible, and has the advantages of strong tolerance, easy film formation, anti-oxidation, antibacterial, etc. It is widely used in the production of adhesives, food coating films, and degradable plastics etc., the research on gliadin microcapsules has been reported, and the invention patent with the application number CN201910205859.9 discloses a method for preparing zein-based microcapsules, which combines zein with nano-titanium dioxide precursor Adding it into two immiscible solvents, two phases are added dropwise and mixed to obtain microcapsules through interfacial polymerization. In this preparation process, the precursor needs to be dissolved in a certain toxic organic solvent such as tetrahydrofuran. In addition, the strict drop mixing step is not conducive to mass production

Method used

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  • Preparation method and product of gliadin microcapsules
  • Preparation method and product of gliadin microcapsules
  • Preparation method and product of gliadin microcapsules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Dissolving zein powder in an ethanol / water mixture (v / v, mL:mL, 7 / 3) to prepare a 20% zein ethanol / water solution;

[0040] (2) Get 0.2g of silicon dioxide and disperse it in 20mL of caprylic / capric triglyceride as the oil phase;

[0041] (3) Add 4 mL of prefabricated zein ethanol / water solution to 20 mL of oil phase, and homogeneously emulsify to obtain multiple emulsions, see figure 1 ;

[0042] (4) Remove the ethanol and part of the water in the previously prepared emulsion by heating with rotary evaporation at 45°C, so that the zein protein precipitates and solidifies, and the obtained precipitate is washed with n-hexane for more than three times and vacuum-dried at 50°C for 12 hours to obtain the alcohol Soluble Protein Microcapsules.

[0043] (5) The test results show that the particle size of the microcapsules is about 10-30 μm, see figure 2 and image 3 .

Embodiment 2

[0045] (1) Dissolving zein powder in an ethanol / water mixture (v / v, mL:mL, 7 / 3) to prepare a 20% zein ethanol / water solution;

[0046] (2) Take 0.1g of silicon dioxide and disperse it in 20mL of caprylic / capric triglyceride as the oil phase;

[0047] (3) Add 4 mL of prefabricated zein ethanol / water solution into 20 mL of oil phase, and homogeneously emulsify to obtain a multiple emulsion;

[0048] (4) Remove the ethanol and part of the water in the previously prepared emulsion by heating with rotary evaporation at 45°C, so that the zein is precipitated and solidified, and the obtained precipitate is washed with n-hexane for more than three times and vacuum-dried at 50°C for 12 hours to obtain the alcohol Soluble Protein Microcapsules.

[0049] (5) The test results show that the particle size of the microcapsules is about 5-30 μm, see Figure 4 .

Embodiment 3

[0051] (1) Dissolving zein powder in ethanol / water mixture (v / v, mL:mL, 7 / 3) to prepare 20% zein ethanol / water solution;

[0052] (2) Get 0.4g of silicon dioxide and disperse it in 20mL of caprylic / capric triglyceride as the oil phase;

[0053](3) Add 4 mL of prefabricated zein ethanol / water solution into 20 mL of oil phase, and homogeneously emulsify to obtain a multiple emulsion;

[0054] (4) Remove the ethanol and part of the water in the previously prepared emulsion by heating with rotary evaporation at 45°C, so that the zein protein precipitates and solidifies, and the obtained precipitate is washed with n-hexane for more than three times and vacuum-dried at 50°C for 12 hours to obtain the alcohol Soluble Protein Microcapsules.

[0055] (5) The test results show that the particle size of the microcapsules is about 10-20 μm, see Figure 5 .

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Abstract

The invention discloses a preparation method and product of gliadin microcapsules, comprising: dispersing nano particles in oil, ultrasonically mixing uniformly to obtain an oil phase; dissolving gliadin in a mixed solution of absolute ethanol and deionized water In the process, the ultrasonic solution is completely dissolved to obtain a water phase solution; the water phase solution is added to the oil phase dispersion to emulsify it evenly, and the emulsion is obtained; the ethanol is removed by heating and evaporation, and the prolamin is precipitated and solidified into a microcapsule structure; Washing, vacuum drying to obtain microcapsule powder. The present invention utilizes the nanoparticle stabilizer and prolamin to synergistically stabilize the double emulsion template, and then removes the solvent and solidifies to form prolamin microcapsules. The prepared prolamin microcapsules have structural controllability, and the formation of the microcapsules is controlled by the double emulsion. Influenced by the template, the size can be adjusted by changing the concentration of nanoparticles or the ratio of oil to ethanol.

Description

technical field [0001] The invention belongs to the technical field of biological material preparation, and in particular relates to a preparation method and product of gliadin microcapsules. Background technique [0002] As a new type of carrier technology, microcapsules have shown good application prospects in the fields of medicine, food, and cosmetics. Many studies have proved that microcapsule carriers can be used for sustained release of drugs, slow fragrance of spices and flavors, protection of sensitive active ingredients and lipid anti-oxidation, etc. Because the fields involved in microcapsules have strict requirements on the safety, degradability and edibility of materials, the existing synthetic polymers have been difficult to meet the production requirements. [0003] Glamin is a biopolymer that is safe, non-toxic, edible, and has the advantages of strong tolerance, easy film formation, anti-oxidation, antibacterial, etc. It is widely used in the production of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/04
CPCB01J13/043
Inventor 李云兴胡晓峰蒋航蒋伟杰杨成
Owner JIANGNAN UNIV
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