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Preparation method of zein-gallic acid composite colloidal particles and emulsion thereof

A technology of zein and gallic acid, applied in food ingredients as emulsifiers, food science, food ingredients, etc., can solve the problems of environmental sensitivity and poor stability

Pending Publication Date: 2021-04-27
JILIN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to its strong hydrophobicity, zein is prone to disadvantages such as poor stability and environmental sensitivity when used alone to prepare emulsions.

Method used

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  • Preparation method of zein-gallic acid composite colloidal particles and emulsion thereof
  • Preparation method of zein-gallic acid composite colloidal particles and emulsion thereof
  • Preparation method of zein-gallic acid composite colloidal particles and emulsion thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method of zein-gallic acid composite colloidal particles and emulsion thereof, comprising the steps of:

[0037] S1. Weigh 2 g of zein powder and dissolve it in 100 ml of 70% ethanol solution, place it in a stirring device, stir at 800 rpm for 2 hours, prepare a 2% zein solution, and store it in a refrigerator at 5°C overnight;

[0038] S2. Take the zein solution prepared in step S1, add 0.2 g of gallic acid powder at a rotating speed of 850 rpm, and continue stirring until the gallic acid is completely dissolved, that is, the zein-gallic acid stock solution;

[0039] S3. Rotate and stir the zein-gallic acid stock solution prepared in step S2 under the condition of 1000 rpm, pour it into distilled water 2.4 times its volume in a thin stream, stir for 15 minutes and remove the ethanol in the solution by rotary evaporation, namely Obtain zein-gallic acid composite colloid particle solution;

[0040] S4. Pour the composite colloid particle solution prepared...

Embodiment 2

[0044] A preparation method of zein-gallic acid composite colloidal particles and emulsion thereof, comprising the steps of:

[0045] S1. Weigh 1.5g of zein powder and dissolve it in 100ml of 70% ethanol solution, place it in a stirring device, stir at 850rpm for 2.5h, prepare a 2% zein solution, and place it in a refrigerator at 3°C stored overnight;

[0046] S2. Take the zein solution prepared in step S1, add 0.4 g of gallic acid powder at a rotating speed of 800 rpm, and continue stirring until the gallic acid is completely dissolved, that is, the zein-gallic acid stock solution;

[0047]S3. Rotate and stir the zein-gallic acid stock solution prepared in step S2 under the condition of 1100 rpm, pour it into distilled water 2.5 times its volume in a thin stream, stir for 14 minutes and remove the ethanol in the solution by rotary evaporation, that is Obtain zein-gallic acid composite colloid particle solution;

[0048] S4. Pour the composite colloidal particle solution pre...

Embodiment 3

[0052] A preparation method of zein-gallic acid composite colloidal particles and emulsion thereof, comprising the steps of:

[0053] S1. Weigh 2 g of zein powder and dissolve it in 100 ml of 70% ethanol solution, place it in a stirring device, stir at 860 rpm for 2 hours, prepare a 2% zein solution, and store it in a refrigerator at 4°C overnight;

[0054] S2. Take the zein solution prepared in step S1, add 0.6 g of gallic acid powder at a rotating speed of 900 rpm, and continue stirring until the gallic acid is completely dissolved, that is, the zein-gallic acid stock solution;

[0055] S3. Rotate and stir the zein-gallic acid stock solution prepared in step S2 at 1200rpm, pour it into distilled water twice its volume in a thin stream, stir for 12min and remove the ethanol in the solution by rotary evaporation, that is Obtain zein-gallic acid composite colloid particle solution;

[0056] S4. Pour the composite colloid particle solution prepared in S3 into a plate, use a va...

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Abstract

The invention discloses a preparation method of zein-gallic acid composite colloidal particles and emulsion thereof. The method comprises the following steps of preparing a 2% zein ethanol solution, and performing storage in a refrigerator overnight; adding gallic acid according to a proportional relation under a rotary stirring condition, and performing continuous stirring until the gallic acid is completely dissolved; pouring a mixture solution into distilled water, and performing stirring and rotary evaporation to remove ethanol; treating the mixed solution free of the ethanol is removed to obtain the composite colloidal particles; and mixing the mixed solution free of the ethanol with corn oil with the same volume as the mixed solution free of the ethanol, and performing homogenizing at a high speed to obtain the stable oil-in-water emulsion of the zein-gallic acid composite colloidal particles.

Description

technical field [0001] The invention relates to the technical field of preparation of composite colloidal particles, in particular to a preparation method of zein-gallic acid composite colloidal particles and emulsion thereof. Background technique [0002] With the development of science and technology, extensive research on corn nutrition and economic value, corn processing has been industrialized, but a large number of by-products will be produced during the processing. Zein is one of the main by-products in corn processing. Because it contains a relatively high proportion (about 50%) of hydrophobic amino acids, it cannot be dispersed in pure water but can be dispersed in aqueous ethanol. Most of the media used in most processing industries, especially in the food processing industry, is water, so the application of zein is largely limited. At present, zein is mainly used in the preparation of animal feed and even discharged directly after corn processing, which not only ...

Claims

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Application Information

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IPC IPC(8): A23L29/00A23L29/10
CPCA23L29/10A23L29/045A23L29/035A23V2002/00A23V2200/02A23V2200/222A23V2250/5482
Inventor 刘回民葛思彤刘景圣刘美宏郑明珠蔡丹
Owner JILIN AGRICULTURAL UNIV
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