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Pickering emulsion and preparation method thereof

An emulsion and raw material liquid technology, applied in the field of biomass materials and colloid chemistry, can solve the problems of short fruit preservation time and so on

Active Publication Date: 2021-08-13
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But existing chitosan Pickering emulsion still has the shorter defect to the fresh-keeping time of fruit

Method used

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  • Pickering emulsion and preparation method thereof
  • Pickering emulsion and preparation method thereof
  • Pickering emulsion and preparation method thereof

Examples

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preparation example Construction

[0030] A first aspect of the present invention provides a kind of preparation method of Pickering emulsion, comprises the following steps:

[0031] Mixing the chitosan-chlorogenic acid raw material solution with cinnamaldehyde essential oil to obtain a mixed solution;

[0032] The mixed solution is post-treated to obtain a Pickering emulsion; post-processing includes shearing treatment and homogenization treatment in turn;

[0033] The chitosan-chlorogenic acid raw material solution at least includes chitosan-chlorogenic acid nanoparticles.

[0034] In the present invention, the chitosan-chlorogenic acid raw material solution comprising at least chitosan-chlorogenic acid nanoparticles is mixed with cinnamaldehyde to obtain a mixed solution, and the mixed solution contains chitosan-chlorogenic acid nanoparticles and cinnamaldehyde essential oil, followed by post-treatment of the mixed solution including shear treatment and homogenization treatment, so that the chitosan-chlorog...

Embodiment 1

[0080] The Pickering emulsion of the present embodiment is prepared by the method comprising the following steps;

[0081] 1) prepare chitosan acid solution

[0082] 0.8g chitosan is dissolved in the acetic acid solution that molar concentration is 0.3mol / L, after fully dissolving, adjust solution pH to 4.8, obtain chitosan acidic solution;

[0083] 2) Prepare chitosan-chlorogenic acid solution

[0084] Add 0.4g of chlorogenic acid to 100mL of chitosan acidic solution obtained in step 1), fully dissolve to obtain chitosan-chlorogenic acid solution;

[0085] 3) Prepare TPP aqueous solution

[0086]Dissolve 0.05g of sodium tripolyphosphate (TPP) in distilled water, and constant volume in a 50mL volumetric flask to obtain a TPP aqueous solution;

[0087] 4) Preparation of chitosan-chlorogenic acid nanoparticles

[0088] Add 100mL of chitosan-chlorogenic acid solution dropwise into the TPP aqueous solution, stir for 2h, centrifuge at 4000r / min for 10min, retain the precipitate...

Embodiment 2

[0097] The Pickering emulsion of the present embodiment is prepared by the method comprising the following steps;

[0098] 1) prepare chitosan acid solution

[0099] 0.8g chitosan is dissolved in the acetic acid solution that molar concentration is 0.3mol / L, after fully dissolving, adjust solution pH to 4.8, obtain chitosan acidic solution;

[0100] 2) Prepare chitosan-chlorogenic acid solution

[0101] Add 0.4g of chlorogenic acid to 100mL of chitosan acidic solution obtained in step 1), fully dissolve to obtain chitosan-chlorogenic acid solution;

[0102] 3) Prepare TPP aqueous solution

[0103] Dissolve 0.05g of sodium tripolyphosphate (TPP) in distilled water, and constant volume in a 50mL volumetric flask to obtain a TPP aqueous solution;

[0104] 4) Preparation of chitosan-chlorogenic acid nanoparticles

[0105] Add 100mL of chitosan-chlorogenic acid solution dropwise into the TPP aqueous solution, stir for 2h, centrifuge at 4000r / min for 10min, retain the precipitat...

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Abstract

The invention provides a Pickering emulsion and a preparation method thereof. The preparation method of the Pickering emulsion comprises the following steps: mixing a chitosan-chlorogenic acid raw material solution with cinnamyl aldehyde essential oil to obtain a mixed solution; and sequentially performing shearing treatment and homogenizing treatment on the mixed solution to obtain a Pickering emulsion. The chitosan-chlorogenic acid raw material solution at least comprises chitosan-chlorogenic acid nanoparticles. The Pickering emulsion prepared by the preparation method disclosed by the invention can significantly prolong the shelf life of fruits and vegetables, and the preparation method is simple to operate and relatively low in cost.

Description

technical field [0001] The invention relates to a Pickering emulsion and a preparation method thereof, belonging to the field of biomass materials and colloid chemistry. Background technique [0002] Fresh-cut fruits and vegetables refer to a series of processes such as screening, cleaning, cutting, processing, fresh-keeping, and packaging of fresh and complete fruits or vegetables to form 100% usable products, and make the resulting products It can stay fresh for a period of time. Fresh-cut fruits and vegetables are favored by consumers around the world for their freshness, nutrition, health and convenience. However, due to the mechanical damage of fresh-cut fruits and vegetables during processing, the metabolic reaction and respiration of fresh-cut fruits and vegetables will be aggravated, causing a series of physiological and biochemical changes, such as the outflow of dissolved substances in cells, accelerated cell aging and tissue browning, etc., greatly reducing the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/16A23B7/154
CPCA23B7/16A23B7/154A23V2002/00A23V2200/10A23V2250/028A23V2250/5072A23V2250/511
Inventor 郜海燕陈杭君牛犇房祥军吴伟杰许凤
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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