Chitin betaine surfactant composition and its preparation and agent

The technology of surfactant and compound is applied in the field of chitosan-betaine-type surfactant compound and its preparation and use, to achieve the effects of broadening the antibacterial range, maintaining the surface active function and improving the sterilization rate.

Inactive Publication Date: 2005-02-23
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although surfactants can inhibit and kill Gram-positive bacter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: chitosan (Mw is 78 * 10 4 , DD is 92%) be dissolved in 1wt% acetic acid solution, be mixed with the chitosan solution of 1wt%, adjust pH value to 5.4, the C 12 Alkyl amidopropyl dimethylamine betaine solution is diluted to 0.5%, and this surfactant solution is added in the chitosan solution of equal volume under stirring condition at room temperature, continues to stir for 2 hours, makes chitosan- A compound of betaine-type surfactants. The compound solution can completely inhibit the growth of Escherichia coli, Pseudomonas aeruginosa, Staphylococcus epidermidis, Staphylococcus aureus, and Candida albicans after being diluted 10 times. The antibacterial time is more than 120 hours, and most pathogenic bacteria are killed within 30 minutes. This compound solution can be directly used as a cleaning agent for fruits and vegetables, diluted 10 times when used, soaked fruits and vegetables for 30 minutes, rinsed with clean water, and then eaten; when used as d...

Embodiment 2

[0012] Embodiment 2: chitosan (Mw is 12 * 10 4 , DD is 85%) be dissolved in 1wt% acetic acid solution, be mixed with the chitosan solution of 2wt%, adjust pH value to 5.4, the C 18 Dilute the alkyl betaine solution to 0.05%, add this surfactant solution to an equal volume of chitosan solution under stirring at room temperature, continue to stir for 2 hours, and place it overnight to make a chitosan-betaine surface Compounds of active agents. This compound solution can completely inhibit the growth of Escherichia coli, Pseudomonas aeruginosa, Staphylococcus epidermidis, Staphylococcus aureus and Candida albicans, and the antibacterial time is greater than 120 hours. After being diluted 10 times, it can completely inhibit Escherichia coli, Pseudomonas aeruginosa, Staphylococcus epidermidis and Staphylococcus aureus, and the antibacterial time is more than 120 hours. This compound solution can be directly used as a cleaning agent for fruits and vegetables, diluted 10 times when...

Embodiment 3

[0013] Embodiment 3: chitosan (Mw is 154 * 10 4 , DD is 70%) dissolved in 1% acetic acid solution, prepared into 0.1% chitosan solution, adjust the pH value to 5.4, the C 8 Dilute the alkylamidopropyl dimethylamine betaine solution to 2%, add this surfactant solution to an equal volume of chitosan solution under stirring at room temperature, continue to stir for 2 hours, and place it overnight to form a shell A complex of polysaccharide-betaine surfactants. This compound solution can completely inhibit the growth of Escherichia coli, Pseudomonas aeruginosa, Staphylococcus epidermidis, Staphylococcus aureus and Candida albicans, and the antibacterial time is greater than 120 hours. After being diluted 2 times, it can completely inhibit the growth of Staphylococcus epidermidis, Staphylococcus aureus and Candida albicans, the antibacterial time is more than 120 hours, and the antibacterial time for Escherichia coli and Pseudomonas aeruginosa is 24 hours. This compound solution ...

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PUM

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Abstract

The invention publishes a kind of compound of chitosan betaine type surfactant. It contains: 0.05-1 wt% acetum, 0.025-1 wt% betaine type surfactant and the rest being water. The preparation method is: first, dissolve the chitosan in 0.1-0.2 wt% acetum to obtain 0.1-2 wt% chitosan liquid; secondly, accommodate pH to 3-6; finally, blend and insert 0.05-2 wt% betaine type surfactant and then blend sequentially for 1-3 hours to obtain the compound. The technology is secure and simple. Moreover, it produces no byproduct and answers for the request of environment-protecting. Additionally, the compound can restrain bacteria and epiphyte to grow for a long time and can be produced directly to cleaner of fruit and vegetable, sterilizing water of clothing and for various concourses, washing liquid and so forth.

Description

technical field [0001] The present invention relates to a compound of chitosan acetic acid solution and betaine type surfactant and its preparation method and application. The antibacterial property after compounding is much higher than that of chitosan and surfactant itself Enhanced, it can be used as cleaning agent, disinfectant, and hand sanitizer. Background technique [0002] Chitosan has antibacterial properties against bacteria and fungi at pH < 6, and it has good biocompatibility, non-toxic and no side effects, and is biodegradable in the environment, so it is an ideal natural antibacterial agent. But chitosan can only inhibit and kill bacteria, not fungi. People are enhancing its antibacterial and bactericidal properties in various ways, and applying it in various fields. By adjusting the molecular weight of chitosan, degree of deacetylation, solvent, pH, etc., or chitosan derivatization, is the method that people try to enhance the antibacterial properties of ...

Claims

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Application Information

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IPC IPC(8): A01N37/00C11D1/90
Inventor 杜予民刘慧
Owner WUHAN UNIV
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