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A kind of citrus essential oil microcapsule and its preparation method and application

A technology for citrus essential oil and microcapsules, applied in the field of citrus essential oil microcapsules and their preparation, can solve the problems of limited performance improvement, low embedding rate, large particle size and the like

Active Publication Date: 2022-06-28
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the particle size of the microcapsules prepared in the prior art is large and the embedding rate is low, so that its performance improvement is relatively limited, such as the microcapsules prepared in "Preparation and Performance Research of Three Kinds of Plant Essential Oil Microcapsules". The particle size is above 1.91μm, and its maximum embedding rate is only 66%

Method used

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  • A kind of citrus essential oil microcapsule and its preparation method and application
  • A kind of citrus essential oil microcapsule and its preparation method and application
  • A kind of citrus essential oil microcapsule and its preparation method and application

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preparation example Construction

[0023] The invention provides a preparation method of citrus essential oil microcapsules, comprising the following steps:

[0024] (1) mixing chitosan quaternary ammonium salt with sodium alginate, acetic acid and water to obtain a composite wall material solution;

[0025] (2) mixing the composite wall material solution obtained in the step (1) with citrus essential oil and composite emulsifier, and emulsifying to obtain an emulsion;

[0026] (3) the emulsion obtained in the step (2) is mixed with an alkali, and a complex coagulation reaction is carried out to obtain the first product of the citrus essential oil microcapsules;

[0027] (4) mixing the first product of the citrus essential oil microcapsules obtained in the step (3) with calcium chloride, and carrying out a cross-linking curing reaction to obtain the citrus essential oil microcapsules.

[0028] Unless otherwise specified, the source of each component is not particularly limited in the present invention, and com...

Embodiment 1

[0067] (1) dissolving chitosan quaternary ammonium salt in an aqueous acetic acid solution with a mass concentration of 1% to obtain a chitosan quaternary ammonium salt solution; dissolving sodium alginate in distilled water to obtain a sodium alginate solution;

[0068] (2) Mix the chitosan quaternary ammonium salt solution and the sodium alginate solution to obtain a composite wall material solution (the mass ratio of chitosan quaternary ammonium salt and sodium alginate is 1:1, and the chitosan in the composite wall material solution is The total mass concentration of quaternary ammonium salt and sodium alginate is 2%);

[0069] (3) adding citrus essential oil, Tween-80 and Span-80 to the composite wall material solution obtained in step (2), emulsifying for 3min at 30000rpm and 25°C to obtain emulsion (citrus essential oil and composite wall material solution) The mass ratio of Tween-80 and Span-80 is 1:100, the mass ratio of Tween-80 and Span-80 is 1:1, and the mass ratio...

Embodiment 2

[0073] In the step (3) of Example 1, the mass ratio of the citrus essential oil and the composite wall material solution was replaced by 2:100, and other parameters were the same as those in Example 1 to obtain powdered citrus essential oil microcapsules.

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Abstract

The invention provides a citrus essential oil microcapsule and its preparation method and application, which belong to the field of anti-corrosion technology, comprising: mixing chitosan quaternary ammonium salt with sodium alginate, acetic acid and water to obtain a composite wall material solution; The essential oil is mixed with a complex emulsifier to obtain an emulsion, which is mixed with calcium chloride after complex coacervation, and cross-linked and solidified to obtain citrus essential oil microcapsules. In the present invention, citrus essential oil is a natural bactericide, which has high-efficiency, broad-spectrum, and safe antibacterial effects. The prepared microcapsules have a smaller particle size and higher embedding rate and drug loading, and have excellent antibacterial properties. During use, the core material can be slowly released to play an antibacterial effect and prolong the antibacterial effect time. The results of the examples show that the average particle diameter of the citrus essential oil microcapsules prepared by the present invention is 340nm, the embedding rate is 89.3%, and the drug loading is 44.65%. The antibacterial performance is good for a long time.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion, in particular to a citrus essential oil microcapsule and a preparation method and application thereof. Background technique [0002] Cosmetics occupy an important position in people's daily life. In order to ensure the stability of product performance, it must be added with antimicrobial substances, namely preservatives. With the advancement of scientific research, the society's research on preservatives has become more and more in-depth, and many traditional preservatives have been confirmed to have certain negative effects, which will affect human health. Therefore, "no added" preservative products are subject to market demand welcome. [0003] The non-volatile components of plant essential oils contain active substances that have excellent antioxidant, antiviral, antibacterial, and anti-inflammatory effects. Due to their naturalness and safety, they have been widely used in cosmetics, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/14
CPCB01J13/14
Inventor 王伟袁佳佳刘慧敏王肖肖魏泽丰刘清雷
Owner SHANGHAI INST OF TECH
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