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Starch-based dextrin modified zein nanoparticles as well as preparation method and application thereof

A zein and nanoparticle technology, applied in powder delivery, organic active ingredients, cosmetic preparations, etc., can solve problems such as application limitation, multiple emulsion thermodynamic instability, etc., and achieve simple preparation method, easy industrial production, strong strength. The effect of antioxidant properties

Active Publication Date: 2020-12-25
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its application is greatly limited due to the thermodynamically unstable properties of multiple emulsions due to the flocculation, coalescence and migration of inner and outer aqueous phase components of oil droplets.

Method used

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  • Starch-based dextrin modified zein nanoparticles as well as preparation method and application thereof
  • Starch-based dextrin modified zein nanoparticles as well as preparation method and application thereof
  • Starch-based dextrin modified zein nanoparticles as well as preparation method and application thereof

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preparation example Construction

[0029] One aspect of the embodiments of the present invention provides a method for preparing starch-based dextrin-modified zein nanoparticles, comprising:

[0030] The first mixed reaction system containing zein, tea polyphenol ester, sodium hydroxide, ethanol and water was reacted at 25° C. for 24 h to obtain a zein-tea polyphenol ester covalent complex, and then the covalent complex containing corn The second mixed reaction system of prolamin-tea polyphenol ester covalent complex, sodium carbonate, ethanol and water was reacted at 25°C for 4 hours to obtain hollow zein-tea polyphenol ester nanoparticles;

[0031] Co-precipitation reaction occurs in the third mixed reaction system comprising carboxymethyl dextrin, tea polyphenol ester, ethanol and water to obtain carboxymethyl dextrin-tea polyphenol ester covalent complex;

[0032] And, the fourth mixed reaction system comprising the hollow zein-tea polyphenol ester nanoparticles, the carboxymethyl dextrin-tea polyphenol est...

Embodiment 1

[0105] (1) Preparation of hollow zein-tea polyphenol ester nanoparticles

[0106]Dissolve zein and tea polyphenol ester in 80% (v / v) ethanol solution respectively, adjust the pH value to 9.0 with 0.1mol / L sodium hydroxide solution after mixing, and stir continuously at 25°C The reaction was carried out for 24 hours. After the reaction was completed, the obtained mixed solution was ultrasonically dialyzed in a water bath for 24 hours, during which the dialysate was replaced 8 times to remove free tea polyphenol esters. Finally, the solution was freeze-dried to obtain zein-tea Polyphenol ester covalent complexes;

[0107] Dissolve 2 g of zein-tea polyphenol ester covalent complex in 100 mL of ethanol solution (80% by volume), stir at 800 rpm for 2 h, and let stand to dissolve completely. Water ethanol is uniformly mixed by volume ratio 3:7 to form an ethanol suspension of sodium carbonate, the above suspension is mixed with zein-tea polyphenol ester covalent complex solution by...

Embodiment 2

[0121] (1) Preparation of hollow zein-tea polyphenol ester nanoparticles

[0122] Dissolve zein and tea polyphenol ester in 80% (v / v) ethanol solution respectively, adjust the pH value to 9.0 with 0.1mol / L sodium hydroxide solution after mixing, and stir continuously at 25°C The reaction was carried out for 24 hours. After the reaction was completed, the obtained mixed solution was ultrasonically dialyzed in a water bath for 24 hours, during which the dialysate was replaced 8 times to remove free tea polyphenol esters. Finally, the solution was freeze-dried to obtain zein-tea Polyphenol ester covalent complexes;

[0123] Dissolve 2 g of zein-tea polyphenol ester covalent complex in 100 mL of ethanol solution (80% by volume), stir at 800 rpm for 2 h, and let stand to dissolve completely. Water ethanol is uniformly mixed by volume ratio 3:7 to form an ethanol suspension of sodium carbonate, the above suspension is mixed with zein-tea polyphenol ester covalent complex solution b...

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Abstract

The invention discloses starch-based dextrin modified zein nanoparticles as well as a preparation method and application thereof. The invention also discloses a preparation method of the W2 / O2 / (O1 / W1)type multi-emulsion. The preparation method comprises the following steps: mixing polyglycerol ricinoleate with corn oil to form a first oil phase, mixing a mixed solution of sodium chloride and gelatin as a first water phase with the obtained first oil phase, and performing high-pressure homogenization treatment to obtain a W2 / O2 type primary emulsion; mixing a second oil phase with a suspensionof nanoparticles as a second water phase, and performing high-pressure homogenization treatment to prepare an O1 / W1 type Pickering emulsion; and mixing the emulsion with the W2 / O2 type primary emulsion, and performing high-pressure homogenization treatment to obtain the W2 / O2 / (O1 / W1) type multiple emulsion. The preparation method of the multiple emulsion is simple, mild in reaction condition andsuitable for industrial production, and can be applied to the fields of food, medicines, cosmetics and the like.

Description

technical field [0001] The invention belongs to the technical field of emulsification, in particular to a starch-based dextrin-modified zein nanoparticle and a preparation method and application thereof, in particular to a hollow zein-tea polyphenol ester / carboxymethyl dextrin -Tea polyphenol ester nanoparticles and preparation method thereof, and hollow zein-tea polyphenol ester / carboxymethyl dextrin-tea polyphenol ester nanoparticles for preparing W 2 / O 2 / (O 1 / W 1 ) application in multiple emulsions. Background technique [0002] As a new type of antioxidant with strong free radical scavenging rate, tea polyphenol esters retain some special physiological effects of tea polyphenols, and have been widely studied in the field of food and medicine in recent years. However, the multiple phenolic hydroxyl groups contained in polyphenols make them unstable to light, high temperature and alkaline conditions, and their bioavailability is also reduced. Many studies have show...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L29/00A61K9/19A61K9/113A61K47/42A61K47/36A61K31/353A61P39/06A61K8/02A61K8/06A61K8/64A61K8/73A61K8/49A61Q19/08
CPCA23L29/045A23L29/035A23L29/03A61K9/19A61K9/113A61K47/42A61K47/36A61K31/353A61P39/06A61K8/0225A61K8/066A61K8/64A61K8/73A61K8/498A61Q19/08
Inventor 章宝孟然李小龙刘文杰王毓敏
Owner HEFEI UNIV OF TECH