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A kind of gliadin-phenolic antioxidant nanoparticle and Pickering emulsion prepared therefrom

A technology of Pickering emulsion and gliadin, which is applied in the field of Pickering emulsion preparation, can solve the problems of complex anti-oil oxidation stability and poor physical stability, etc., and achieve improved anti-oxidation efficiency, high yield, Highly stable effect

Active Publication Date: 2021-06-15
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Patent CN110583972A discloses a protein-polyphenol complex and its preparation method and application. The obtained gelatin-red bayberry leaf proanthocyanidin complex can be used to prepare Pickering emulsion, but this preparation method can only combine protein with water-soluble Polyphenols are combined, and the prepared complex has poor oil oxidation stability and physical stability, which has strong limitations

Method used

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  • A kind of gliadin-phenolic antioxidant nanoparticle and Pickering emulsion prepared therefrom
  • A kind of gliadin-phenolic antioxidant nanoparticle and Pickering emulsion prepared therefrom
  • A kind of gliadin-phenolic antioxidant nanoparticle and Pickering emulsion prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Example 1 Preparation of a Zein-Gallic Acid Composite Nanoparticle

[0067] (1) 1 g of zein powder and 3 mmol of gallic acid were dissolved in 40 mL of 70% (v / v) ethanol aqueous solution under the conditions of 60 W ultrasonic and 600 rpm stirring to obtain a zein-gallic acid ethanol solution;

[0068] (2) Add the mixed zein-gallic acid ethanol solution dropwise to 120 mL of Tween 20 aqueous solution containing 0.05 g under the condition of 200 rpm magnetic stirring to obtain the dispersed zein-gallic acid composite nanoparticles liquid;

[0069] (3) Subsequently, the nanoparticle dispersion liquid was rotary evaporated and concentrated to a volume of 50 mL, and the ethanol was removed to obtain a zein-gallic acid composite nanoparticle solution.

[0070] The average particle diameter of the zein-gallic acid composite nanoparticles prepared in this example is 70 nm. Such as figure 1 shown.

Embodiment 2

[0071] Example 2 Preparation of a Zein-Gallic Acid Composite Nanoparticle

[0072] (1) 1 g of zein powder and 3 mmol of gallic acid were dissolved in 25 mL of 90% (v / v) aqueous ethanol under conditions of 50 W ultrasound and 600 rpm stirring to obtain a zein-gallic acid ethanol solution;

[0073] (2) Add the mixed zein-gallic acid ethanol solution dropwise to 80 mL of Tween 20 aqueous solution containing 0.05 g under the condition of 200 rpm magnetic stirring to obtain the dispersed zein-gallic acid composite nanoparticles liquid;

[0074] (3) Subsequently, the nanoparticle dispersion liquid was rotary evaporated and concentrated to a volume of 50 mL, and the ethanol was removed to obtain a zein-gallic acid composite nanoparticle solution.

[0075] The average particle diameter of the zein-gallic acid composite nanoparticles prepared in this example is 170 nm. Such as figure 1 shown.

Embodiment 3

[0076] Example 3 Preparation of a Zein-Gallic Acid Composite Nanoparticle

[0077] (1) 1 g of zein powder and 3 mmol of gallic acid were dissolved in 15 mL of 90% (v / v) aqueous ethanol under conditions of 50 W ultrasound and 600 rpm stirring to obtain a zein-gallic acid ethanol solution;

[0078] (2) Add the mixed zein-gallic acid ethanol solution dropwise to 65 mL of Tween 20 aqueous solution containing 0.05 g under the condition of 200 rpm magnetic stirring to obtain zein-gallic acid composite nanoparticle dispersion liquid;

[0079] (3) Subsequently, the nanoparticle dispersion liquid was rotary evaporated and concentrated to a volume of 50 mL, and the ethanol was removed to obtain a zein-gallic acid composite nanoparticle solution.

[0080] The average particle diameter of the zein-gallic acid composite nanoparticles prepared in this example is 300 nm. Such as figure 1 shown.

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Abstract

The invention discloses a prolamin-phenolic antioxidant nanoparticle and a Pickering emulsion with interface enriched antioxidants prepared therefrom. The preparation method is to control the phenolic antioxidant, prolamin and hydrophilic emulsifier through the anti-solvent precipitation method to prepare the gliadin-phenolic antioxidant composite nanometer with a particle size of 70-300nm, concentrated distribution and high yield. particle. The prepared composite nanoparticle can stabilize the oil-in-water emulsion with 10-50% oil phase, and the prepared Pickering emulsion has good fluidity and high physical stability. The combination of phenolic antioxidants in prolamin nanoparticles with high interface adsorption rate can effectively increase the concentration of interface antioxidants and improve the antioxidant efficiency of antioxidants. The prolamin-phenolic antioxidant composite nanoparticle is used as a stabilizer of the Pickering emulsion, and the Pickering emulsion preparation with high physical stability and excellent oxidation resistance can be prepared.

Description

technical field [0001] The invention relates to the technical field of Pickering emulsion preparation. More specifically, it relates to a prolamin-phenolic antioxidant nanoparticle and a Pickering emulsion enriched in interface antioxidant prepared therefrom. Background technique [0002] Pickering emulsion is an emulsion stabilized by solid nanoparticles, which can be used in food, drug embedding, delivery and texture improvement. Emulsion products are prone to oil oxidation during storage, resulting in a decline in the sensory and nutritional quality of the emulsion. Usually, phenolic antioxidants are added to the emulsion product system to prevent oil oxidation. Highly polar phenolic antioxidants have a high distribution coefficient in the continuous phase, and low-polar phenolic antioxidants have a high distribution coefficient in the oil phase, and the oil-water interface of the emulsion is the starting point and diffusion point of lipid oxidation. Therefore, the anti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L89/00C08K5/13C08K5/134C08J3/03
CPCC08J3/03C08K5/13C08K5/1345C08L2201/08C08L89/00
Inventor 肖杰赵梓军陈霞王文博王玲
Owner SOUTH CHINA AGRI UNIV
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