Litsea cubeba essence oil clathrate and preparation method thereof

A technology of Radix japonica and inclusion compound, which is applied in the field of plant essential oil bags and methods, can solve the problems of fast volatilization of essential oils, inconvenient carrying and placement, etc., and achieves the effects of enhancing the inhibitory effect, delaying the fumigation speed, and good slow-release effect.

Inactive Publication Date: 2013-02-13
GUANGDONG INST OF MICROORGANISM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But litsea cubeba essential oil volatilizes ...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Prepare 8g of β-cyclodextrin as a saturated aqueous solution at 40°C, place it in a temperature-controlled magnetic stirrer and stir it thoroughly, and add Tween20 so that its volume fraction in the saturated aqueous solution of β-cyclodextrin is 0.5% , to obtain a saturated aqueous solution of β-cyclodextrin containing Tween20; dissolve 1ml of Litsea Cubeba essential oil in 1ml of Tween20 aqueous solution with a volume fraction of 0.5%, and mix well to obtain Litsea Cubeba essential oil solution. Use a pipette gun to slowly add the Litsea Cubeba essential oil solution to the β-cyclodextrin saturated aqueous solution containing Tween20 to obtain a mixture of the β-cyclodextrin saturated aqueous solution containing Tween20 and the Litsea Cubeba essential oil solution. The above mixed solution was placed on a temperature-controlled magnetic stirrer and stirred for 3 hours, and then the mixed solution was placed in a refrigerator at 4°C for 12 hours to precipitate precipita...

Embodiment 2

[0015] Prepare 8g of β-cyclodextrin into a saturated aqueous solution at 60°C, place it in a temperature-controlled magnetic stirrer and stir it thoroughly, and add Tween20 to make its volume fraction in the saturated aqueous solution of β-cyclodextrin 0.1% , to obtain a β-cyclodextrin saturated aqueous solution containing Tween20; dissolve 1ml of Litsea Cubeba essential oil in 2ml of Tween20 aqueous solution with a volume fraction of 0.5%, and mix well to obtain Litsea Cubeba essential oil solution. Use a pipette gun to slowly add the Litsea Cubeba essential oil solution to the β-cyclodextrin saturated aqueous solution containing Tween20 to obtain a mixture of the β-cyclodextrin saturated aqueous solution containing Tween20 and the Litsea Cubeba essential oil solution. The above mixed solution was placed on a temperature-controlled magnetic stirrer and stirred for 4 hours, and then the mixed solution was placed in a refrigerator at 4°C for 12 hours to precipitate precipitates,...

Embodiment 3

[0017] Prepare 10g of β-cyclodextrin into a saturated aqueous solution at 60°C, place it in a temperature-controlled magnetic stirrer and stir it thoroughly, and add Tween20 to make its volume fraction in the saturated aqueous solution of β-cyclodextrin 0.3% , to obtain a β-cyclodextrin saturated aqueous solution containing Tween20; dissolve 1ml of Litsea cubeba essential oil in 4ml of Tween20 aqueous solution with a volume fraction of 0.5%, and mix well to obtain Litsea cubeba essential oil solution. Slowly add the Litsea cubeba essential oil solution to the β-cyclodextrin saturated aqueous solution containing Tween20 with a pipette gun to obtain a mixed solution of the Tween20-containing β-cyclodextrin saturated aqueous solution and the Litsea cubeba essential oil solution. Stir the above mixture on a temperature-controlled magnetic stirrer at 60°C for 3 hours, then place the mixture in a refrigerator at 4°C for 24 hours to precipitate out, filter with filter paper, collect t...

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PUM

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Abstract

The invention discloses Litsea cubeba essence oil clathrate and a preparation method of the Litsea cubeba essence oil clathrate. The method comprises the following steps: (1) preparing beta-cyclodextrin (beta-CD) saturated aqueous solution at a controlled temperature of 40-80 DEG C, stirring until smooth, and adding Tween 20 until the volume fraction of Tween 20 in beta-CD aqueous solution is 0.1%-0.5% to obtain Tween 20-containing beta-CD saturated aqueous solution; (2) adding Litsea cubeba essence oil into a solvent at volume ratio of 1:(1-4) to obtain Litsea cubeba essence oil solution; and (3) dropping Litsea cubeba essence oil solution into Tween 20-containing beta-CD saturated aqueous solution according to a ratio of 1:(8-12) mL/g of Litsea cubeba essence oil to beta-CD, stirring for 3-5 h at 40-80 DEG C, standing for 12-48 h at 0-4 DEG C for precipitation, filtering, collecting precipitate, washing, and freeze-drying to obtain Litsea cubeba essence oil clathrate. The clathrate can slowly release active ingredients of Litsea cubeba essence oil, has lasting effects in resisting mildew/bacteria and refreshing air, and is convenient to carry and use.

Description

technical field [0001] The invention belongs to the field of plant essential oil inclusions, and in particular relates to an inclusion compound of litsea cubeba essential oil and a preparation method thereof. Background technique [0002] Plant essential oil, also known as volatile oil or essential oil, is an oily liquid with unique aromatic flavor extracted from plants. It is obtained from flowers, bracts, leaves, branches, roots, bark, fruits, seeds, resins, etc. of herbaceous plants. Extracted in other ways. There are more than 3,000 kinds of known plant essential oils, of which about 300 kinds have important commercial value. In recent years, the antifungal and antibacterial activity of plant essential oils has received more and more attention. The report that plant essential oils have antibacterial activity was first seen in the 1880s. Cinnamon essential oil was found to kill anthracnose spores, and cinnamon and bulblet extracts were found to inhibit the growth of eig...

Claims

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Application Information

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IPC IPC(8): C11B9/00
Inventor 李文茹施庆珊麦蔼平欧阳友生陈仪本黄小茉
Owner GUANGDONG INST OF MICROORGANISM
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