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Preparation process capable of increasing encapsulation rate of essential oil microcapsules

A preparation process and microcapsule technology, which is applied in the field of preparation process to improve the embedding rate of essential oil microcapsules, can solve the problems of small molecule residues and microcapsule effects, and achieve the goals of avoiding use and residues, improving stability, and improving overall performance Effect

Inactive Publication Date: 2016-10-26
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the emulsifiers selected for core material emulsification, such as monoglyceride and span80, will inevitably have some small molecules remaining in the microcapsules, which will have a certain impact on the microcapsules

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (a) Weigh 0.2 g of methyl cellulose and dissolve it in distilled water to prepare a 0.3% methyl cellulose aqueous solution. Stir with a mechanical stirrer at a stirring speed of 100 r / min for 60 min and set aside. Slowly add 0.8ml of tea tree oil essential oil into the methyl cellulose solution, and mechanically stir while adding, stir for 30min and homogenize (10000r, 10min) for later use;

[0022] (b) Dissolve 0.6g chitosan in distilled water to form a chitosan solution with a concentration of 0.5% for subsequent use. After 60 minutes of mechanical stirring at a speed of 200 r / min, homogenize for 10 minutes, and then stir at a speed of 80 r / min. Under the condition of 1 min, the chitosan solution was added dropwise to the above mixed solution of methylcellulose-tea tree oil; 3.0 g of sodium alginate was dissolved in distilled water to form a sodium alginate solution with a concentration of 8.0%. After 60 min of mechanical stirring at 200 r / min, homogenize, add the so...

Embodiment 2

[0026] (a) Weigh 0.8 g of methyl cellulose and dissolve it in distilled water to prepare a 1.6% methyl cellulose aqueous solution. Stir with a mechanical stirrer at a stirring speed of 150 r / min for 90 min and set aside. Slowly add 1.0ml of citral to the methylcellulose solution dropwise, and mechanically stir while adding, stir for 60min and homogenize (10000r, 10min) for later use;

[0027] (b) 1.0g chitosan was dissolved in distilled water to form a chitosan solution with a concentration of 5% for subsequent use. After 90 minutes of mechanical stirring at a speed of 400 r / min, it was homogenized for 10 minutes, and then the mechanical stirring speed was 120 r / min. Under the condition of min, the chitosan solution was added dropwise to the above methylcellulose-citral mixed solution; 6.0g sodium alginate was dissolved in distilled water to form a concentration of 2.0% sodium alginate, at a speed of 400 After 60 minutes of mechanical stirring at r / min, homogenize, add the so...

Embodiment 3

[0032] (a) Weigh 1.4 g of methylcellulose and dissolve it in distilled water to prepare a 3% aqueous solution of methylcellulose. Stir with a mechanical stirrer at a stirring speed of 200 r / min for 60 min and set aside. Slowly add 1.0ml of 2-phenylethanol essential oil into the methylcellulose solution dropwise, and mechanically stir while adding, stir for 50min and homogenize (10000r, 10min) for later use;

[0033] (b) Dissolve 3.0g of sodium alginate in 100ml of water, homogenize after 60 minutes of mechanical stirring at a speed of 280 r / min, and add the sodium alginate solution drop by drop under the condition of a mechanical stirring speed of 150 r / min into the above-mentioned methylcellulose-2-phenylethanol mixed solution; dissolve 1.0g of methylcellulose in 50ml of water, homogenize after 60min of mechanical stirring at a speed of 200 r / min, and add the methylcellulose solution drop by drop Add dropwise to the above-mentioned methylcellulose-2-phenylethyl alcohol-sodiu...

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Abstract

The invention relates to a preparation process capable of increasing the encapsulation rate of essential oil microcapsules. The preparation process capable of increasing the encapsulation rate of essential oil microcapsules comprises the following steps: (1) emulsification of essential oil; (2) forming of microcapsules; (3) drying of the microcapsules. The preparation process has the benefits as follows: the essential oil microcapsules reduce reaction sensitivity of essential oil to external environmental factors such as pH value, oxygen, humidity, heat, light and other substances; diffusion and volatilization loss of effective active ingredients in the essential oil are reduced, and the stability is improved; liquid essential oil is turned into a solid state, and transportation and storage are facilitated; controllable release and even specific release of the essential oil are realized, and the utilization efficiency of the essential oil is improved; the sense effect of the essential oil is improved, and the market acceptability is improved. Besides, the essential oil encapsulation rate is increased with methyl cellulose as a core emulsifier in the process, use and residues of small molecular emulsifiers are avoided, and the overall performance of the microcapsules is improved with methyl cellulose as an inner-layer wall material.

Description

technical field [0001] The invention relates to a preparation process for improving the embedding rate of essential oil microcapsules. Background technique [0002] In recent years, there have been many reports on essential oil microcapsules, mainly involving the preparation and sustained release of essential oil microcapsules. Microencapsulation can indeed play a sustained release role in essential oils. However, most of the essential oil microencapsulation adopts the emulsification embedding method. After the core material and the wall material liquid are mixed and emulsified, the core material is embedded in a protective wall material, and then the emulsion is dried. When heated, a network structure is formed, and small molecular substances such as water or other solvents dissolve smoothly through the "mesh" due to heat evaporation, while the core material with larger molecules stays in the "net" and forms after drying. capsule. However, the emulsifiers selected for emu...

Claims

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Application Information

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IPC IPC(8): A23L5/00
Inventor 尹学琼张松朱莉
Owner HAINAN UNIVERSITY
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