Essential oil nanoparticles and preparation method thereof as well as application of essential oil nanoparticles to preparation of mosquito-repelling product

A technology of nanoparticles and essential oils, applied in the field of daily chemicals, can solve the problems of loss and volatilization, easy dispersion and deterioration, unstable properties, etc., and achieve the effects of improving stability, improving water solubility, and lasting mosquito repellent effect.

Active Publication Date: 2017-03-22
广州睿森生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, plant essential oil is a mixture of various chemical components without fixed boiling point and freezing point. Development and application are greatly restricted

Method used

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  • Essential oil nanoparticles and preparation method thereof as well as application of essential oil nanoparticles to preparation of mosquito-repelling product
  • Essential oil nanoparticles and preparation method thereof as well as application of essential oil nanoparticles to preparation of mosquito-repelling product
  • Essential oil nanoparticles and preparation method thereof as well as application of essential oil nanoparticles to preparation of mosquito-repelling product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Dissolve 17g of cetyltrimethylammonium bromide solution in 340mL of deionized water, ultrasonically dissolve it completely, then add 56mL of NaOH solution (2M), heat to 80°C, and add 87g of ethyl orthosilicate while stirring , react for 6h, filter, then dissolve in 60mL of methanol, add 10mL of concentrated hydrochloric acid dropwise, heat to 70°C, pickle with acid for 18h, collect the precipitate by filtration, wash with methanol and deionized water several times, and dry to obtain mesoporous silica 25g.

[0077] 3g sucrose stearate, 30g Nepeta essential oil, 20g cinnamon essential oil were dissolved in 80mL of 50°C water, then 25g of mesoporous silica was added, ultrasonicated for 1h, and then 100mL of dextran quaternary ammonium salt solution was added dropwise to it ( 0.5g / mL), ultrasonication for 8min, centrifugation (10000rpm, 10min), washing with deionized water several times, drying to obtain 120g of nanoparticles.

Embodiment 2

[0079] Dissolve 26g of cetyltrimethylammonium bromide solution in 520mL of deionized water, ultrasonically dissolve it completely, then add 89mL of NaOH solution (2M), heat to 75°C, and add 130g of ethyl orthosilicate while stirring , react for 7 hours, filter, then dissolve in 70mL of methanol, add 15mL of concentrated hydrochloric acid dropwise, heat to 65°C, wash with acid for 22 hours, collect the precipitate by filtration, wash with methanol and deionized water several times, and dry to obtain mesoporous silica 37g.

[0080] Dissolve 5g of sucrose stearate, 2g of rosemary essential oil, 18g of chestnut flower essential oil, 10g of small crown smoked leaf essential oil, 5g of galangal essential oil, 20g of guava chrysanthemum essential oil, 3g of thyme essential oil, 12g of lantana essential oil, and 5g of tea tree essential oil. In 115mL of 55°C water, add 37g of mesoporous silica, sonicate for 0.5h, then add dropwise 150mL of dextran quaternary ammonium salt solution (0....

Embodiment 3

[0082] Dissolve 35g of cetyltrimethylammonium bromide solution in 700mL of deionized water, ultrasonically dissolve it completely, then add 122mL of NaOH solution (2M), heat to 85°C, and add 174g of ethyl orthosilicate while stirring , react for 8 hours, filter, then dissolve in 80mL of methanol, add 20mL of concentrated hydrochloric acid dropwise, heat to 60°C, wash with acid for 24h, collect the precipitate by filtration, wash with methanol and deionized water several times, and dry to obtain mesoporous silica 50g.

[0083] Mix 7g sucrose stearate with 12g nepeta essential oil, 15g cinnamon essential oil, 3g rosemary essential oil, 20g chestnut flower essential oil, 10g small crown smoked leaf essential oil, 3g galangal essential oil, 10g guaymer essential oil, 5g thyme essential oil, 15g Lantana essential oil and 7g tea tree essential oil were dissolved in 150mL of water at 60°C, then 50g of mesoporous silica was added, ultrasonicated for 1h, then 200mL of dextran quaternar...

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Abstract

The invention relates to the technical field of daily chemical products and particularly relates to essential oil nanoparticles and a preparation method thereof as well as application of the essential oil nanoparticles to preparation of a mosquito-repelling product. Plant essential oil is used as a mosquito-repelling agent, and all the plant essential oils have synergistic interaction and mutual promotion effects, so that the mosquito-repelling effect is good. Each type of the essential oil is covered with mesoporous silicon dioxide, so that the essential oil can be more stable and has a slow releasing effect. The nanoparticles are added into the mosquito-repelling product so that the adding amount of the essential oil in mosquito-repelling emulsion is reduced and the acting time also is prolonged. According to the mosquito-repelling emulsion provided by the invention, the essential oil, vegetable oil and purslane herb extract can also have anti-allergy and anti-inflammation, and itch-reliving and swelling-eliminating effects, and the irritation on skins is reduced, so that the mosquito-repelling emulsion has better safety and more efficient mosquito-repelling effect. An experiment shows that under a proper proportion, the effective mosquito-repelling time of the mosquito-repelling emulsion provided by the invention can reach 14.1h; and after 18h, the effective repelling rate can still reach 87.3%.

Description

technical field [0001] The invention relates to the technical field of daily chemicals, in particular to an essential oil nano particle, a preparation method thereof and an application in preparing mosquito repellent products. Background technique [0002] There are many kinds of mosquitoes. There are more than 3,000 species in the world. Among them, there are more than 300 species of mosquitoes in my country. They are widely distributed. The common ones are Anopheles, Culex, and Aedes. Although mosquitoes are small, the damage they cause is not small. They are common harmful insects in summer and autumn. Mosquitoes not only bite and suck blood and cause itching, but also transmit many diseases, such as malaria, Japanese encephalitis, filariasis, dengue fever and yellow fever. As a vector of disease, humans have recognized the importance of mosquito control. Since the 1940s, some highly effective insecticides such as hexachlorocyclohexane (666), bis-p-chlorophenyltrichloroe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/92A61K8/9789A61K8/25A61K8/73A61Q17/02
CPCA61K8/25A61K8/73A61K8/922A61K8/97A61K2800/56A61Q17/02
Inventor 魏坤王晓慧秦烨芝胡露谢水林
Owner 广州睿森生物科技有限公司
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