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Soluble chitosan-PVP compound emulsifier as well as preparation method and application thereof

A chitosan and soluble technology, which is used in the application of emulsifiers and the preparation of soluble chitosan-PVP composite emulsifiers, can solve the problem of low stability of PVP emulsifiers and achieve stable properties and strong emulsifying ability

Active Publication Date: 2021-09-24
ZHEJIANG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of low stabilization effect of PVP emulsifier in the prior art, the present invention provides an environment-friendly compound emulsifier with simple preparation method and strong emulsifying ability

Method used

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  • Soluble chitosan-PVP compound emulsifier as well as preparation method and application thereof
  • Soluble chitosan-PVP compound emulsifier as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] When soluble chitosan: PVP (K90) = 1:1 (mass ratio), mix 10g soluble chitosan (molecular weight 500), 10g PVP (K90) and dissolve in 100mL distilled water, heat in a water bath at 40°C , stirred for 1.5h, sealed and stored at 4°C for 3h, and vacuum freeze-dried the obtained soluble chitosan-PVP complex solution at -30°C for 24h to obtain 20g of a freeze-dried preparation of the soluble chitosan-PVP complex. Use 10mL of distilled water to prepare emulsifiers with mass fractions of 5%, 10%, and 15%, respectively.

Embodiment 2

[0027] When soluble chitosan:PVP(K90)=2:1 (mass ratio), mix 10g soluble chitosan (molecular weight 500), 5g PVP(K90) and dissolve in 100mL distilled water, heat in a water bath at 40 ℃, stirred for 1.5h, sealed at 4°C for 3h, and the soluble chitosan-PVP complex solution was vacuum freeze-dried at -30°C for 24h to obtain a freeze-dried preparation of 15 g of the soluble chitosan-PVP complex. The mass fractions prepared by using 10 mL of distilled water are respectively 5%, 10%, and 15% emulsifiers.

Embodiment 3

[0029] When soluble chitosan: PVP (K90) = 3:1 (mass ratio), mix 12g soluble chitosan (molecular weight 500), 4g PVP (K90) and dissolve in 100mL distilled water, heat in a water bath at 40°C , stirred for 1.5 h, sealed and stored at 4° C. for 3 h, and the soluble chitosan-PVP complex solution was vacuum freeze-dried at -30° C. for 24 h to obtain 16 g of a freeze-dried preparation of the soluble chitosan-PVP complex. The mass fractions prepared by using 10 mL of distilled water are respectively 5%, 10%, and 15% emulsifiers.

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Abstract

The invention provides preparation of a soluble chitosan-PVP compound emulsifier and application of the emulsifier in essential oil emulsion. The soluble chitosan-PVP compound emulsifier is prepared according to a following method: mixing soluble chitosan and polyvinylpyrrolidone, dissolving in distilled water, and performing heating and stirring at 30-50 DEG C for 1-2 hours to obtain the soluble chitosan-PVP compound emulsifier. The preparation method is simple and low in raw material cost; the provided compound emulsifier is stable in property and high in emulsifying capacity; and the soluble chitosan and the PVP are used as raw materials, so that the emulsifier is free from problems of phytotoxicity, pollution and the like, and is an environment-friendly emulsifier.

Description

technical field [0001] The invention relates to the technical field of emulsifiers, in particular to a preparation method of a soluble chitosan-PVP composite emulsifier and its application as an emulsifier. Background technique [0002] Emulsions are generally thermodynamically unstable systems. In order to keep the emulsion relatively stable for a period of time, it is necessary to add a suitable emulsifier to achieve this. An emulsifier is a surfactant that adsorbs to the oil-water interface during emulsification and forms a physical barrier around the droplet. This layer of physical barrier can reduce the interfacial tension and increase the steric hindrance, which is helpful for the formation of the emulsion, and also prevents the droplets from getting too close together after the emulsion is formed, thereby improving the stability of the emulsion. Emulsion has good stability, which is the prerequisite for the application of emulsion in real life, and it is also one of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/00B01F17/52A23D9/04A23L29/10C11B9/00C11B9/02C09K23/00C09K23/52
CPCA23D9/04A23L29/10C11B9/00C11B9/02A23V2002/00A23V2200/222
Inventor 王纯洁石慧付媛丽金志敏龚国华
Owner ZHEJIANG UNIV OF TECH
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