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A kind of preparation method of sandalwood essential oil spherical microcapsule

A technology of sandalwood essential oil and microcapsules, which is applied in the field of preparation of sandalwood essential oil microcapsules, can solve the problems of expensive raw materials, large particle size, and high equipment requirements, so as to improve sustained release performance, stability, and stability Effect

Active Publication Date: 2021-10-12
BAOJI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Xu Chang from Zhejiang Sci-tech University once reported that tricalcium phosphate (TCP) was used as dispersant, toluene-2,4-diisocyanate (TDI) and polyethylene glycol (PEG) were used as oil phase and water phase reaction monomers, through high-speed shear Dispersed interfacial polymerization prepares micron-sized microcapsules that wrap sandalwood essential oil in polyurethane wall materials. However, this method has the advantages of expensive raw materials, complicated operation steps, high equipment requirements, and large shape and size of sandalwood essential oil microcapsules (the average diameter is about 50μm) and other disadvantages
In addition, due to the special physical and chemical properties of sandalwood essential oil itself, the shape of sandalwood essential oil microcapsules prepared by the β-cyclodextrin inclusion method with conventional process parameters is not spherical, and the particle size is relatively large, giving sandalwood essential oil microcapsules The industrial application, production and promotion of the industry bring a lot of inconvenience

Method used

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  • A kind of preparation method of sandalwood essential oil spherical microcapsule
  • A kind of preparation method of sandalwood essential oil spherical microcapsule
  • A kind of preparation method of sandalwood essential oil spherical microcapsule

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: the preparation of sandalwood essential oil microcapsule

[0031] Sandalwood essential oil microcapsules were prepared by controlling the ratio of sandalwood essential oil and β-cyclodextrin, and the properties of the target microcapsules were studied.

[0032] Take a certain amount of ethanol solution (10%), based on 1g of sandalwood essential oil, prepare essential oil solutions with mass concentrations of 5%, 10%, 15%, and 20%. Weigh quantitative β-cyclodextrin, and dissolve it in ethanol aqueous solution (ethanol / water=1 / 2, Volume ratio). Then the essential oil solution is slowly added dropwise to the β-cyclodextrin solution, so that the mass ratio of sandalwood essential oil to β-cyclodextrin is 4, 1, 1 / 2, 1 / 4, 1 / 6, 1 / 8, 1 / 10, 1 / 12, 1 / 14, 1 / 16, 1 / 18, 1 / 20, keep at 55°C and stir during the addition process, after the dropwise addition is completed, turn off the heating, cover and stir for a certain period of time Stand overnight at 4°C, then filter ...

Embodiment 2

[0033] Embodiment 2: Determination of volatile oil content in sandalwood essential oil microcapsules

[0034] The oil content of sandalwood essential oil β-cyclodextrin inclusion complex is one of the indicators reflecting the inclusion effect, which reflects the proportion of the core material (ie sandalwood essential oil) in the inclusion complex, that is, sandalwood essential oil Effect of β-cyclodextrin inclusion complex on oil loading of sandalwood essential oil. Accurately weigh 1.50 g of the sandalwood essential oil microcapsules prepared in Example 1, place them in a conical flask, heat them on an electric heating mantle (the temperature of the electric heating mantle is 220°C), weigh and record the mass every half an hour, until the mass remains constant Unchanged, combined with the obtained blank rate, the content of sandalwood essential oil in the sample can be obtained. In order to obtain a more accurate oil content, add a group of blank tests, obtain the weight l...

Embodiment 3

[0035] Embodiment 3: Research on the sustained release performance of sandalwood essential oil microcapsules

[0036]In this experiment, 37°C was selected as the research temperature, and the change law of the remaining mass of untreated essential oil and essential oil microcapsules was measured every hour to study the influence of microcapsules on the stability of essential oil. The volatilization curve of untreated essential oil and essential oil microcapsules with time is as follows: Figure 4 shown.

[0037] Depend on Figure 4 It can be seen that at 37 ° C, the volatilization of untreated sandalwood essential oil and essential oil microcapsules will increase linearly and slowly with time in the initial stage, and the volatilization of sandalwood essential oil microcapsules tends to a balanced state after 10 hours. On the whole, after placing the same time, the volatilization of sandalwood essential oil microcapsules is significantly lower than that of untreated sandalwo...

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Abstract

The invention provides a kind of preparation method of sandalwood essential oil microcapsules, the method comprises: preparation sandalwood essential oil alcohol solution and β-cyclodextrin solution, then sandalwood essential oil alcohol solution is added in the β-cyclodextrin solution, Keep heating and stirring in a water bath at 54-57°C during the addition process. After the dropwise addition is completed, stop heating, continue stirring for 3-4 hours and then stand at 3-5°C overnight to obtain a mixed solution, filter and recover the precipitate, and store in a vacuum oven Dry to get sandalwood essential oil microcapsules. The present invention microencapsulates the sandalwood essential oil through an appropriate method, which not only allows the sandalwood essential oil to be stored for a long time during transportation and storage, avoids oxidation loss caused by exposure to light and oxygen, but also converts the liquid essential oil into a solid state Essential oil, easy to carry and use, and enhances the slow-release properties of sandalwood aroma components.

Description

technical field [0001] The invention belongs to the technical field of plant essential oils and fragrances, in particular relates to the preparation technology of plant essential oil microcapsules, in particular to a preparation method of sandalwood essential oil microcapsules. Background technique [0002] Plant essential oils are a type of plant-derived secondary metabolites (the products of secondary metabolism depend on basic metabolism), which are composed of chemical molecules such as terpenes, aldehydes, esters, alcohols, etc., with small molecular weight and volatile. Most essential oils are colorless, light yellow or transparent liquids or pastes with a certain color that are easy to flow. The chemical composition is relatively complex, the chemical properties are active, easy to oxidize, poor thermal stability, and easy to volatilize. Sandalwood essential oil is extracted and concentrated from the trunk wood of the fragrant wood plant - sandalwood. Its physical pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B9/00B01J13/04
CPCB01J13/04B01J13/043C11B9/00
Inventor 马琳林启荣雷丹丹刘珊
Owner BAOJI UNIV OF ARTS & SCI
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