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Preparation method of rose essence embeded spice and method for controllably releasing rose essence by carbon dioxide

A technology of rose essence and carbon dioxide, applied in the direction of essential oil/perfume, fat production, etc., can solve the problems of poor release ability, limit the application effect of rose essential oil, etc., and achieve the effect of controlled release

Pending Publication Date: 2021-03-26
ZHENGZHOU TOBACCO RES INST OF CNTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned embedding methods have achieved the purpose of improving the dispersibility and enhancing the stability in the aqueous solution system to a certain extent, but most of the embedding methods have poor release ability, which will also limit the application effect of rose essential oil

Method used

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  • Preparation method of rose essence embeded spice and method for controllably releasing rose essence by carbon dioxide
  • Preparation method of rose essence embeded spice and method for controllably releasing rose essence by carbon dioxide
  • Preparation method of rose essence embeded spice and method for controllably releasing rose essence by carbon dioxide

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Experimental program
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Effect test

Embodiment 1

[0033] The preparation method of the rose essence embedded perfume of the present embodiment may further comprise the steps:

[0034] 1) Add 6.8g of imidazole and 8.0g of acrylonitrile to 25ml of methanol, react at 60°C for 3h, distill off the solvent under reduced pressure to obtain β-cyanoethylimidazole, dissolve it in 30ml of acetonitrile, and add 22.1g of bromine Dodecane was reacted at 100°C for 15h, acetonitrile was distilled off under reduced pressure, 50ml of 15wt% NaOH solution and 30ml of chloroform were added, and kept at 25°C for 1h. Separate the organic phase; wash the organic phase with 30 ml of deionized water to neutrality, and distill off the chloroform solvent under reduced pressure to obtain N-dodecyl imidazole.

[0035] 2) 0.1g of rose essential oil, 0.1g of N-dodecyl imidazole, and 50ml of water are mixed to form a mixed solution, and CO is introduced into the mixed solution at 0.25L / min 2 Gas 30min, can obtain the aqueous solution (forming stable aggrega...

Embodiment 2

[0037] The preparation method of the rose essence embedded perfume of the present embodiment may further comprise the steps:

[0038] 1) Add 6.8g of imidazole and 8.0g of acrylonitrile to 30ml of methanol, react at 50°C for 4h, distill off the solvent under reduced pressure to obtain β-cyanoethylimidazole, dissolve it in 25ml of acetonitrile, add 22g of bromo Dodecane was reacted at 110°C for 11h, acetonitrile was distilled off under reduced pressure, 50ml of 15wt% NaOH solution and 30ml of chloroform were added, and kept at 25°C for 1h. Separate the organic phase; wash the organic phase with 30 ml of deionized water to neutrality, and distill off the chloroform solvent under reduced pressure to obtain N-dodecyl imidazole.

[0039] 2) 0.1g of rose essential oil, 0.1g of N-dodecyl imidazole and 50ml of water are mixed to form a mixed solution, and CO is introduced into the mixed solution at 0.10L / min 2 Gas 1h, can obtain the aqueous solution of embedding rose essence stably. ...

Embodiment 3

[0041] The preparation method of the rose essence embedded perfume of the present embodiment may further comprise the steps:

[0042] 1) Add 6.8g of imidazole and 8.0g of acrylonitrile to 25ml of methanol, react at 60°C for 3h, distill off the solvent under reduced pressure to obtain β-cyanoethylimidazole, dissolve it in 30ml of acetonitrile, and add 22.1g of bromine Dodecane was reacted at 115°C for 15h, acetonitrile was distilled off under reduced pressure, 50ml of 15wt% NaOH solution and 30ml of chloroform were added, and kept at 25°C for 1h. Separate the organic phase; wash the organic phase with 30 ml of deionized water to neutrality, and distill off the chloroform solvent under reduced pressure to obtain N-dodecyl imidazole.

[0043]2) 0.15g of rose essential oil, 0.15g of N-dodecyl imidazole and 50ml of water are mixed to form a mixed solution, and CO is introduced into the mixed solution at 0.25L / min 2 Gas 50min, can obtain the aqueous solution of embedding rose essen...

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Abstract

The invention belongs to the field of spice preparation, and particularly relates to a preparation method of a rose essence embedded spice and a method for controllably releasing rose essence by carbon dioxide. The method comprises the steps: 1) mixing rose essential oil, N-alkyl imidazole and water to prepare a mixed solution; and 2) mixing the mixed solution with carbon dioxide to form an aggregate solution system. According to the rose essence embedding spice and the preparation method thereof, N-alkyl imidazole reacts with carbon dioxide in a water system to generate N-alkyl imidazole bicarbonate with surface activity, and the N-alkyl imidazole bicarbonate can embed rose essence in an aggregate form and form a stable aggregate solution system, so that the rose essence embedded spice which is stable in a normal state is constructed. By utilizing the sensitivity of the N-alkyl imidazole bicarbonate to CO2 in a water system, the N-alkyl imidazole bicarbonate can be reversely convertedinto the N-alkyl imidazole, and the N-alkyl imidazole has no surface activity, so that the controlled release of an embedding system is realized.

Description

technical field [0001] The invention belongs to the field of perfume preparation, and in particular relates to a method for preparing rose essence-embedded fragrance and a method for carbon dioxide controllable release of rose essence. Background technique [0002] Rose essential oil is a precious natural fragrance, mainly used in food, health products and daily chemical fields. However, rose essential oil is insoluble in water, and also has characteristics such as strong volatility and light and heat sensitivity, which cause rose essential oil to be easily lost and destroyed under storage and application conditions, which greatly limits its application. [0003] At present, rose essential oil is often treated with embedding technology to enhance the solubility and stability of rose essential oil in water. Xu Shitao and others used saccharified glass as the wall material, and obtained rose essential oil microcapsules after homogenization, freezing, drying, and crushing (the...

Claims

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Application Information

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IPC IPC(8): C11B9/00
CPCC11B9/0003
Inventor 史清照张启东华辰凤徐秀娟胡军毛健柴国璧范武宋瑜冰刘俊辉屈展宗永立
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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