Constant-temperature double-layer natural essential oil bacteriostatic agent and preparation method thereof

A technology of natural essential oils and antibacterial agents, applied in the field of phytochemistry, can solve the problems of natural essential oils such as easy volatilization and short service life, and achieve the effects of not being volatile, inhibiting deterioration and corruption, and inhibiting the growth of bacteria

Inactive Publication Date: 2014-08-27
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the volatility of natural essential oils has great limitations in its application. First, natural essential oils are easy to volatilize once they are in direct contact with the air, and need to be sealed and stored; Light preservation, and its service life becomes correspondingly shorter

Method used

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  • Constant-temperature double-layer natural essential oil bacteriostatic agent and preparation method thereof
  • Constant-temperature double-layer natural essential oil bacteriostatic agent and preparation method thereof
  • Constant-temperature double-layer natural essential oil bacteriostatic agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The parts by weight of the prepared raw materials are 4.5 parts of urea, 15 parts of formaldehyde, and 2.2 parts of melamine, and in a three-hole flask connected with a reflux device and a constant temperature magnetic stirrer, a formaldehyde solution with a mass fraction of 37% is added, adjusted with triethanolamine. Its pH value is 7.0~7.5, add 4.5 parts of 95% urea and melamine to the formaldehyde solution, and add deionized water to 60mL, adjust the pH value to 8.5 with triethanolamine, at a constant temperature of 70 ° C, stirring speed 400r / urea-formaldehyde resin prepolymer was obtained by reacting for 1 h under the condition of min; weighed 20 parts of n-tetradecane as the core material, 0.45 parts of Span-80, 0.55 parts of Tween-80, and 40 parts of deionized water. Homogenously emulsify n-tetradecane, Span-80, Tween-80 and deionized water under the action of a high-shear dispersing emulsifier to obtain a uniform organic phase change material emulsion; weigh th...

Embodiment 2

[0066] The parts by weight of the prepared raw materials are 5.0 parts of urea, 18 parts of formaldehyde, and 2.5 parts of melamine, and in a three-hole flask connected with a reflux device and a constant temperature magnetic stirrer, a formaldehyde solution with a mass fraction of 37% is added, adjusted with triethanolamine. Its pH value is 7.0~7.5, add 5.0 parts of 95% urea and melamine to the formaldehyde solution, and add deionized water to 60mL, adjust the pH value to 8.5 with triethanolamine, at a constant temperature of 70°C and a stirring speed of 400r / urea-formaldehyde resin prepolymer was obtained by reacting for 1 h under the condition of min; weighed 25 parts of n-tetradecane as the core material, 0.48 parts of Span-80, 0.52 parts of Tween-80, and 45 parts of deionized water. Homogenously emulsify n-tetradecane, Span-80, Tween-80 and deionized water under the action of a high-shear dispersing emulsifier to obtain a uniform organic phase change material emulsion; we...

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Abstract

The invention discloses a constant-temperature double-layer natural essential oil bacteriostatic agent prepared from the following components: a natural essential oil, beta-cyclodextrin, urea, formaldehyde, melamine, Span-80, Twain-80, n-tetradecane, polyvinyl alcohol, a sodium chloride solution and deionized water. The invention also provides a preparation method of the bacteriostatic agent. The preparation method comprises the steps: by adopting in situ polymerization, the surface of the low-temperature organic phase-change material n-tetradecane is wrapped with a urea formaldehyde resin obtained by carrying out a condensation polymerization reaction of urea and formaldehyde, and thus an inner-layer modified urea formaldehyde resin low-temperature organic phase-change microcapsule is obtained; then the natural essential oil is adsorbed on the wall of the inner-layer modified urea formaldehyde resin low-temperature organic phase-change microcapsule, an outer layer is wrapped with beta-cyclodextrin as raw material, and thus the constant-temperature double-layer natural essential oil bacteriostatic agent is obtained. The constant-temperature double-layer natural essential oil bacteriostatic agent overcomes application limitations of the natural essential oil and the low-temperature organic phase-change material, improves the utilization rate of the natural essential oil, also has the microcapsule characteristic of slow release, and expands the application fields of the natural essential oil and the low-temperature organic phase-change material.

Description

technical field [0001] The invention belongs to the field of phytochemistry, and in particular relates to a bacteriostatic agent, in particular to a thermostatic double-layer natural essential oil bacteriostatic agent and a preparation method thereof. Background technique [0002] Natural essential oils refer to the volatile aromatic substances extracted from the flowers, leaves, stems, roots or fruits of plants through steam distillation, extrusion, cold soaking or solvent extraction. Natural essential oils not only have a more psychological effect of soothing and invigorating the spirit, but also have the function of soothing and alleviating symptoms for certain diseases. The essence of natural essential oils can prevent infectious diseases, fight bacteria, viruses, molds, prevent inflammation, prevent spasms, promote cell metabolism and cell regeneration, and are very helpful for many diseases, and some essential oils can regulate endocrine organs and promote hormone secr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/28A01N65/22A01N65/34A01N25/10C09K5/06A01P1/00A01P3/00
Inventor 叶琳徐单单刘钦矿杨晓波宋晓秋
Owner SHANGHAI INST OF TECH
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