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Slow aromatic polyelectrolyte microcapsule with casein-sodium alginate serving as compound wall materials and preparation method of microcapsule

A technology of sodium alginate and polyelectrolyte, which is applied in the fields of cosmetics, food and coatings, can solve problems such as complicated operation, and achieve the effects of simple experimental conditions, convenient operation and increased added value.

Active Publication Date: 2017-08-11
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few public reports about the research on the fragrance-sustaining polyelectrolyte microcapsules with casein and sodium alginate as the wall materials and essence as the core material.
Moreover, the general complex coacervation method is prepared by the template method, using a cross-linking agent for curing, containing organic solvents and other substances, the template and organic solvent need to be removed, and the operation is cumbersome

Method used

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  • Slow aromatic polyelectrolyte microcapsule with casein-sodium alginate serving as compound wall materials and preparation method of microcapsule
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  • Slow aromatic polyelectrolyte microcapsule with casein-sodium alginate serving as compound wall materials and preparation method of microcapsule

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preparation example Construction

[0026] The preparation method of the fragrance-slowing polyelectrolyte microcapsule using casein-sodium alginate as the composite wall material involved in the present invention uses casein and sodium alginate as the wall material, essence as the core material, and obtains slow-flavoring polyelectrolyte microcapsules through a composite coacervation method. Fragrant casein-sodium alginate composite microcapsules. The prepared fragrance-sustaining polyelectrolyte microcapsules have a uniform spherical structure, and the diameter of the capsules is on the order of nanometers to micrometers, which effectively coats the essence. The inner wall material of the system is a natural polymer material, and there is no organic solvent, template and cross-linking agent, which avoids organic solvents and templates in traditional methods, and omits the cumbersome process of removing templates and solvents; the reaction conditions are mild, and it is easy to realize large-scale production ch...

Embodiment 1

[0038] Step 1: Preparation of Casein / Essence Mixture and Sodium Alginate Solution

[0039] Add 0.0165 g of casein powder (casein concentration is 0.33%, w / v) into the aqueous solution containing acid medium with a pH value of 2.5, and then add 0.1000 g of flavor powder (flavor concentration is 2.00%, w / v), allowed to mix well, and stirred overnight to obtain casein / flavor blend A. Dissolve 0.0835 g of sodium alginate in pure water (the concentration of sodium alginate is 1.67%, w / v), and stir overnight to obtain sodium alginate solution B.

[0040] Step 2: Preparation of fragrance-loaded slow-flavor casein-sodium alginate composite microcapsules

[0041] Place the casein / essence mixture A in step 1 in a water bath at 30°C for stirring at a speed of 13 rpm. During this process, start adding the sodium alginate solution B in step 1 dropwise until the addition is complete Afterwards, stirring was continued for 30 min to obtain fragrance-loaded slow-flavor casein-sodium alginate...

Embodiment 2

[0043] Step 1: Preparation of casein / essence mixture and sodium alginate solution

[0044] Add 0.0500 g of casein powder (concentration of casein is 1.00%, w / v) into an aqueous solution containing an acidic medium with a pH value of 2.5, and after it dissolves, add 0.1000 g of powdered essence (concentration of essence is 2.00%, w / v), allowed to mix well, and stirred overnight to obtain casein / flavor blend A. Dissolve 0.0500 g of sodium alginate in pure water (the concentration of sodium alginate is 1.00%, w / v), and stir overnight to obtain sodium alginate solution B.

[0045] Step 2: Preparation of fragrance-loaded slow-flavor casein-sodium alginate composite microcapsules

[0046] Place the casein / essence mixture A in step 1 in a water bath at 30°C for stirring at a speed of 13 rpm. During this process, start adding the sodium alginate solution B in step 1 dropwise until the addition is complete Afterwards, stirring was continued for 30 min to obtain fragrance-loaded slow-...

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Abstract

The invention relates to a slow aromatic polyelectrolyte microcapsule with casein-sodium alginate serving as compound wall materials and a preparation method of the microcapsule. At present, public reporting of research of the slow aromatic polyelectrolyte microcapsule with casein and sodium alginate serving as the wall materials and essence serving as a core material is rarely seen. The casein is added into water solution containing acid media, and essence powder is added after the casein is dissolved to obtain casein / essence mixed liquid A. Sodium alginate dissolving liquid B is prepared, the casein / essence mixed liquid A is stirred, and the sodium alginate dissolving liquid B is dripped to obtain the essence loaded slow aromatic casein-sodium composite microcapsule. The essence loaded slow aromatic casein-sodium composite microcapsule is obtained by a composite coagulation method and applied to the field of coatings, textiles and the like, practicability and additional values of products can be improved, the particle size of the slow aromatic microcapsule ranges from nano level to micron level, and the essence can be effectively coated, so that lasting slow aromatic effects are achieved.

Description

technical field [0001] The invention relates to the fields of food, cosmetics, coatings and the like, in particular to a fragrance-slowing polyelectrolyte microcapsule using casein-sodium alginate as a composite wall material and a preparation method thereof. Background technique [0002] Microcapsule technology refers to the use of natural or synthetic polymer materials to wrap dispersed solid, liquid, and even gaseous substances to form tiny particles with semipermeable or sealed capsules. Microcapsules can change the state, quality, volume and performance of materials, protect sensitive components, enhance stability, control the release of core materials, reduce or cover up bad taste, reduce volatility, isolate components and other functions, so it is used in food, medicine, It is widely used in textile, paint, agriculture, cosmetics industry and so on. In recent years, microencapsulation technology has developed very rapidly. On this basis, the fragrance-sustaining mic...

Claims

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Application Information

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IPC IPC(8): B01J13/02
CPCB01J13/02
Inventor 马建中张元霞徐群娜
Owner SHAANXI UNIV OF SCI & TECH
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