Preparation method of sandalwood essential oil microcapsules

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, and achieve improved slow-release performance, increased stability, and good solubility Effect

Active Publication Date: 2017-10-24
BAOJI UNIV OF ARTS & SCI
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Problems solved by technology

Xu Chang from Zhejiang Sci-tech University once reported that using tricalcium phosphate (TCP) as a dispersant, toluene-2,4-diisocyanate (TDI) and polyethylene glycol (PEG) as the oil phase and water phase reaction monomers, through high-speed shear based Dispersed interfacial polymerization prepares micron-sized microcapsules that wrap sandalwood essential oil in polyurethane wall material, yet this method has raw material price expensive, operation step is complicated, and equipment requirement is high, prepares sandalwood essential oil microcapsule shape and size big (average diameter is about 50μm) and other shortcomings
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

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  • Preparation method of sandalwood essential oil microcapsules
  • Preparation method of sandalwood essential oil microcapsules
  • Preparation method of sandalwood essential oil microcapsules

Examples

Experimental program
Comparison scheme
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] Get a certain amount of ethanol solution (10%), take 1g sandalwood essential oil as a benchmark, prepare the essential oil solution that mass concentration is 5%, 10%, 15%, 20%. Weigh quantitative β-cyclodextrin and dissolve it in aqueous ethanol (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 and r...

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 compound, that is, sandalwood essential oil Effect of β-cyclodextrin inclusion complex on oil loading of sandalwood essential oil. Accurately weigh 1.50 g of sandalwood essential oil microcapsules prepared in Example 1, place in a conical flask, heat on a heating mantle (the temperature of the heating mantle is 220° C.), weigh and record the quality every half an hour, until the quality 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 loss quality of the blank...

Embodiment 3

[0037] Embodiment 3: Research on the sustained release performance of sandalwood essential oil microcapsules

[0038]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.

[0039] 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 preparation method of sandalwood essential oil microcapsules. The method comprises steps as follows: a sandalwood essential oil alcoholic solution and a beta-cyclodextrin solution are prepared, then the sandalwood essential oil alcoholic solution is added to the beta-cyclodextrin solution, water-bath heating at the temperature of 54-57 DEG C and stirring are maintained in the adding process, heating is stopped after dropwise adding, the mixture is continuously stirred for 3-4 h and then left to stand over a night at the temperature of 3-5 DEG C, a mixed solution is obtained, filtered and recovered, precipitates are obtained and dried in a vacuum drying box, and the sandalwood essential oil microcapsules are obtained. The sandalwood essential oil is micro-capsuled with a proper method, the sandalwood essential oil can be kept for a longer time in the transportation and storage processes, oxidation loss caused when the sandalwood essential oil makes contact with light or oxygen is avoided, liquid-state essential oil can be converted into solid-state essential oil, the sandalwood essential oil microcapsules are convenient to carry and use, and the slow-release performance of aroma components of sandalwood is improved.

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 oil is a kind 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, and its physical pro...

Claims

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Application Information

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Patent Type & Authority Applications(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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