Plant essential oil microemulsion and preparation method thereof

A plant essential oil and microemulsion technology, applied in food science, food ingredients as emulsifiers, food ingredients containing natural extracts, etc., to achieve significant economic benefits, good stability, and expand the scope of application

Inactive Publication Date: 2018-04-13
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the prior art reports on the bacteriostatic effect of microemulsions, but few reports on its acid, alkali, salt, and sugar tolerance

Method used

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  • Plant essential oil microemulsion and preparation method thereof
  • Plant essential oil microemulsion and preparation method thereof
  • Plant essential oil microemulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0035] The present invention provides a kind of preparation method of plant essential oil microemulsion described in above-mentioned technical scheme, comprises the following steps:

[0036] Mix food-grade Tween 80 and ethanol to obtain a mixed surfactant;

[0037] The mixed surfactant is mixed with the mixture of oregano essential oil and thyme essential oil, and mixed with water while stirring to obtain a plant essential oil microemulsion.

[0038] In the present invention, the mixing temperature of the food-grade Tween 80 and ethanol is preferably 30-45° C., more preferably 35-42° C.; the mixing time is preferably 10-20 minutes, more preferably 15-20 minutes. In a specific embodiment of the present invention, the mixing temperature of the food-grade Tween 80 and ethanol is 38° C., and the mixing time is 15 minutes.

[0039] In the present invention, the temperature at which the mixed surfactant is mixed with the mixture of oregano essential oil and thyme essential oil is p...

Embodiment 1

[0046] Add 6.4g of absolute ethanol to 19.2g of Tween 80, and stir at 38°C for 15 minutes to obtain a mixed surfactant;

[0047] Mix 1.3g of oregano essential oil and 1.3g of thyme essential oil, and stir at room temperature to obtain an oil phase;

[0048] Add the above oil phase to the mixed surfactant, stir until uniform at 38°C, then add 71.8g of deionized water dropwise while stirring to obtain a plant essential oil microemulsion, which is sealed and stored at room temperature at 28°C until use.

[0049] The appearance of the plant essential oil microemulsion prepared by embodiment 1 is as follows: figure 1 , figure 1 The appearance figure of the plant essential oil microemulsion prepared for the embodiment of the present invention 1; By figure 1 It can be seen that it is light yellow, uniform and transparent liquid under natural light, and there is no significant difference in appearance. figure 2 It is the appearance diagram of the plant essential oil microemulsion ...

Embodiment 2

[0061] Add 7.7g of absolute ethanol to 15.38g of Tween 80, and stir at 38°C for 15 minutes to obtain a mixed surfactant;

[0062] Mix 1.28g of oregano essential oil and 1.28g of thyme essential oil, and stir at room temperature to obtain an oil phase;

[0063] Add the above oil phase to the mixed surfactant, stir at 38°C until uniform, then add 74.36g of deionized water dropwise while stirring to obtain a plant essential oil microemulsion, which is sealed and stored at room temperature at 28°C until use.

[0064] The present invention carries out the mensuration of particle diameter, Zeta potential, pH value physicochemical parameter to the plant essential oil microemulsion prepared in embodiment 2, and the test result is: the plant essential oil microemulsion prepared in embodiment 2 is an acidic system; the zeta potential of microemulsion ( -22.09±0.22)mV, with good stability.

[0065] Particle size distribution test results see image 3 ;-- the particle size distribution ...

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Abstract

The invention provides a plant essential oil microemulsion and a preparation method thereof. The microemulsion is prepared from components in parts by weight as follows: 2-4 parts of a mixture of origanum vulgare essential oil and thyme essential oil, 14-22 parts of food-grade Tween, 4-11 parts of ethanol and 65-80 parts of water. The plant essential oil microemulsion has acid and base resistance,salt resistance, sugar resistance and good stability under the synergistic effect of the components; the plant essential oil microemulsion is weakly acid, is a light yellow and transparent liquid inappearance, is particularly applicable to transparent products and has significant economic benefits. The microemulsion is an O/W (oil in water) system and can be diluted infinitely by water in any ratio, the problem of poor hydrophilic property of pure plant essential oil is solved, and the application range of the plant essential oil in the food field is greatly enlarged. The plant essential oilmicroemulsion takes water as the main solvent and a large number of organic solvents can be saved, thus, the plant essential oil microemulsion is a novel green and environment-friendly dosage form.

Description

technical field [0001] The invention relates to the technical field of plant essential oil emulsification, in particular to a plant essential oil microemulsion and a preparation method thereof. Background technique [0002] Microemulsion is a kind of isotropic, transparent or translucent appearance, thermodynamically stable dispersion system spontaneously formed by a certain proportion of surfactants, co-surfactants, water and oil, which belongs to a system of cross-linked colloids. my country's research on microemulsions began in the early 1980s, and considerable achievements have been made in theoretical and applied research. Microemulsions are mainly divided into O / W (oil-in-water) type, W / O (water-in-oil) type and bicontinuous type. [0003] Guo Jintang et al. used clove oil-cinnamon oil-garlic oil as the oil phase, Tween-80 as the surfactant, glycerin as the co-surfactant, and distilled water as the water phase. Sex etc. are good. Hamouda and Baker prepared a soybean...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L29/00A23L29/10
CPCA23L29/035A23L29/04A23L29/10A23V2002/00A23V2200/222A23V2250/21A23V2250/082
Inventor 吴克刚崔绮嫦
Owner GUANGDONG UNIV OF TECH
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