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High internal phase gelatinous wheat gliadin Pickering emulsion and preparation method thereof

A wheat prolamin, gel-like technology, applied in the direction of mixing methods, plant protein processing, chemical instruments and methods, etc., can solve problems such as phase transition, and achieve the effect of simple method, high stability and easy operation of the method

Inactive Publication Date: 2017-04-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, phase transitions are extremely prone to occur during the fabrication of such HIPEs emulsions
Currently, there is no literature report on Pickering HIPEs stabilized by protein, therefore, it is extremely challenging to prepare Pickering HIPEs from wheat prolamin particles

Method used

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  • High internal phase gelatinous wheat gliadin Pickering emulsion and preparation method thereof
  • High internal phase gelatinous wheat gliadin Pickering emulsion and preparation method thereof
  • High internal phase gelatinous wheat gliadin Pickering emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Accurately weigh 0.5g of wheat prolamin and dissolve it in 20ml of ethanol solution whose volume concentration is 70%;

[0040] Dissolve 0.025g chitosan in 50ml of acetic acid solution with a volume concentration of 1%, pour the alcohol solution into the obtained acetic acid solution while homogenizing, homogenize for 4min at a speed of 6000rpm, at 40°C, under a vacuum of 0.1Mpa Rotary evaporation for 20min;

[0041] Afterwards, adjust the pH value of the resulting solution to 5.0, take 9ml, 8ml, 7ml, 6ml, 5ml, 4ml, 3ml, 2ml, and 1ml solutions respectively; 8ml and 9ml corn oil were mixed and sheared and emulsified to obtain wheat prolamin Pickering emulsion respectively. The rotational speed of the shear emulsification is 3000rpmrpm, and the time is 2min.

[0042] In this example, wheat prolamin emulsions with oil phase ratios of 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, and 90% were respectively obtained by embedding different oil phases. Other conditions Unchanged, ...

Embodiment 2

[0047] Accurately weigh 0.5g of wheat prolamin and dissolve it in 20ml of ethanol solution with a volume concentration of 70%; dissolve 0.025g of chitosan in 50ml of an acetic acid solution with a volume concentration of 1%, and pour the alcohol solution into it while homogenizing In the acetic acid solution, homogenize for 4 minutes at a speed of 6000 rpm, rotate and evaporate for 20 minutes at 40°C and a vacuum of 0.1 Mpa, then adjust the pH of the resulting solution to 5.0, take 2ml of the solution, mix it with 8ml of corn oil, and shear emulsify to obtain Wheat prolamin emulsion, wherein the rotation speed of shear emulsification is 5000rpm, and the time is 1min. Take 2ml of wheat prolamin and centrifuge at 10000rpm for 2min.

[0048] In this example, the storage stability of the wheat prolamin Pickering emulsion with 80% oil phase was compared after it was newly prepared and stored for 2 months. At the same time, the emulsion was subjected to centrifugation to explore its...

Embodiment 3

[0050] Accurately weigh 0.5g of wheat prolamin and dissolve it in 20ml of ethanol solution with a volume concentration of 70%; dissolve 0.025g of chitosan in 50ml of an acetic acid solution with a volume concentration of 1%, and pour the alcohol solution into it while homogenizing In the acetic acid solution, homogenize at 6000 rpm for 4 minutes; rotate at 40° C. and 0.1 Mpa vacuum for 20 minutes, and then adjust the pH of the obtained solution to 5.0.

[0051] Take 2ml of the obtained solution and 8ml of corn oil, mix and shear emulsify to obtain wheat prolamin emulsion.

[0052] Take 2ml of the prepared emulsion to test the rheological properties. The diameter of the plate used is 27.83, the temperature is 25°C, the frequency sweep range is set to 0.1-10Hz, and the stress is 1Pa. figure 1 ; Stress sweep frequency is set to 1Hz to obtain stress sweep figure 2 .

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Abstract

The present invention discloses a preparation method of a stable high internal phase gelatinous wheat gliadin Pickering emulsion. The preparation method comprises the following steps: (1) wheat gliadin is dissolved into an alcohol solution; (2) an chitosan acetic acid solution is prepared; (3) the obtained solution in the step (1) is poured into the chitosan acetic acid solution, homogenization is conducted, and the homogenized solution is subjected to rotary evaporation; (4) a pH value of the obtained solution in the step (3) is adjusted to be 4.0-6.0; and (5) the obtained solution in the step (4) is mixed with oil and the mixture is subjected to shear emulsification to obtain the stable high internal phase gelatinous wheat gliadin emulsion. The obtained wheat gliadin Pickering emulsion by the method is high in stability and good in viscoelasticity, and can be used for embedding a large amount of oil. The stable high internal phase gelatinous wheat gliadin Pickering emulsion is low in requirement for devices, and simple and easy to operate in the method, and has relatively good prospect in the application aspects of novel nutrient delivery carriers and food structure modification base materials.

Description

technical field [0001] The invention relates to a wheat prolamin emulsion, in particular to a stable high-internal-phase gel-like wheat prolamin Pickering emulsion and a preparation method thereof. Background technique [0002] Wheat gliadin is an ideal wall material. Wheat gliadin is one of the main storage proteins of wheat, and is the main component of gluten, a by-product of bulk starch processing. It has a wide range of sources and can be eaten. It has been reported in the world to use wheat prolamin colloidal particles as a drug carrier, but it has never been reported to use wheat prolamin to stabilize the oil-water interface. In addition, most of the relevant research on high internal phase emulsions at home and abroad is in the field of materials science, using high internal phase emulsions to form porous materials, sensor equipment, etc., because high internal phase protein emulsions are prone to anti-emulsion, instability, leakage, etc. Oil and other situations, ...

Claims

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Application Information

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IPC IPC(8): A23J1/12A23J3/18A23L29/30A61K47/42A61K47/36B01F3/08
CPCA61K47/36A61K47/42A23J1/12A23J3/18A23V2002/00B01F23/40A23V2250/511A23V2250/5486
Inventor 尹寿伟吴滋灵杨晓泉
Owner SOUTH CHINA UNIV OF TECH
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