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Preparation method and product of prolamin microcapsule

A gliadin and microcapsule technology, applied in the field of preparation of gliadin microcapsules, can solve problems such as unfavorable large-scale production, difficulty in meeting production requirements of synthetic polymers, and achieve the effects of good dispersibility and simple operation

Active Publication Date: 2021-09-24
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 prolamin microcapsule
  • Preparation method and product of prolamin microcapsule
  • Preparation method and product of prolamin microcapsule

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 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.

[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 an ethanol / water mixture (v / v, mL:mL, 7 / 3) to prepare a 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 a product of a prolamin microcapsule. The preparation method comprises the following steps of: dispersing nanoparticles in grease, and ultrasonically mixing well to obtain an oil phase; dissolving prolamin in a mixed solution of absolute ethyl alcohol and deionized water, and performing ultrasonic dissolution completely to obtain a water-phase solution; adding the water-phase solution into the oil-phase dispersion liquid, and uniformly emulsifying to obtain an emulsion; heating and evaporating to remove the ethanol, and separating out and solidifying the prolamin to form a microcapsule structure; and performing repeated cleaning and vacuum drying to obtain microcapsule powder. According to the preparation method, a nanoparticle stabilizer and the prolamin are utilized to synergistically stabilize a double emulsion template, then the prolamin microcapsule is formed by removing the solvent and curing, the prepared prolamin microcapsule has structure controllability, formation of the microcapsule is influenced by the double emulsion template, and the size can be regulated and controlled by changing the concentration of the 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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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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