Litsea cubeba oil mildew and moth proof slow release microcapsule and preparation method

A technology of slow-release microcapsules and litsea cubeba oil, which is applied in botany equipment and methods, pest control, chemicals for biological control, etc., can solve the problems of not having slow-release properties, and achieve the convenience of use Effect

Inactive Publication Date: 2012-10-10
HUBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Microcapsule slow-release technology has been successfully applied in the fields of food, chemical industry, medicine, biotechnology, etc., but the research on the preparation of functional ingredients into microcapsule slow-release body-type anti-mildew, antibacterial, and anthelmintic products has not been reported. Litsea cubeba There are very few reports on the preparation of essential oil microcapsules, but none of the microcapsule products prepared in the reports have sustained-release properties

Method used

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  • Litsea cubeba oil mildew and moth proof slow release microcapsule and preparation method
  • Litsea cubeba oil mildew and moth proof slow release microcapsule and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Add 10g of N-methylpyrrolidone to 100g of ethyl cellulose, heat to 90°C, stir to dissolve, and obtain ethyl cellulose viscous liquid;

[0029] 2) Heat 650g of water to 90°C, add 100g of high-substituted hydroxypropyl cellulose, 60g of gum arabic, and 20g of maltodextrin under stirring until all are dissolved, add the above ethyl cellulose viscous liquid, and stir at 90°C for 40 minute, cooled to room temperature, added emulsifier containing 2g Span80 and 2g Tween80 and 100g litsea cubeba oil under stirring, and dispersed at a high speed of 1000 rpm to obtain litsea cubeba oil emulsion;

[0030] 3) The above emulsion is homogenized in the first stage at 30MPa, and in the second stage at 5MPa, and then spray-dried at a feed rate of 25g / min, an inlet air temperature of 195°C, and an outlet air temperature of 90°C to obtain a slow-release Litsea cubeba oil anti-mildew and anti-moth slow-release microcapsules. The prepared litsea cubeba oil microcapsules had an effective...

Embodiment 2

[0032] 1) Add 15g of N-methylpyrrolidone to 100g of ethyl cellulose, heat to 90°C, stir to dissolve, and obtain ethyl cellulose viscous liquid;

[0033] 2) Heat 700g of water to 90°C, add 50g of high-substituted hydroxypropyl cellulose, 50g of gum arabic, and 50g of maltodextrin under stirring until all of them are dissolved, add the above ethyl cellulose viscous liquid, and stir at 90°C for 30 minute, cooled to room temperature, added emulsifier containing 2g Span80 and 2g Tween80 and 100g litsea cubeba oil under stirring, and dispersed at a high speed of 900 rpm to obtain litsea cubeba oil emulsion;

[0034]3) The above-mentioned emulsion is homogenized in the first stage at 30MPa, and in the second stage at 5MPa, and then spray-dried at a feed rate of 20g / min, an inlet air temperature of 180°C, and an outlet air temperature of 85°C to obtain a slow-release Litsea cubeba oil anti-mildew and anti-moth slow-release microcapsules. The effective oil loading capacity of the obta...

Embodiment 3

[0036] 1) Add 12g of N-methylpyrrolidone to 100g of ethyl cellulose, heat to 90°C, stir to dissolve, and obtain ethyl cellulose viscous liquid;

[0037] 2) Heat 600g of water to 90°C, add 60g of high-substituted hydroxypropyl cellulose, 20g of gum arabic, and 20g of maltodextrin under stirring until all of them are dissolved, add the above ethyl cellulose viscous liquid, and stir at 90°C for 20 minute, cooled to room temperature, added emulsifier containing 1g Span80 and 1g Tween80 and 100g litsea cubeba oil under stirring, and dispersed at a high speed of 800 rpm to obtain litsea cubeba oil emulsion;

[0038] 3) The above emulsion is homogenized in the first stage at 30MPa, and in the second stage at 5MPa, and then spray-dried at a feed rate of 15g / min, an inlet air temperature of 165°C, and an outlet air temperature of 75°C to obtain a slow-release Litsea cubeba oil anti-mildew and anti-moth slow-release microcapsules. The prepared litsea cubeba oil microcapsules had an eff...

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Abstract

The invention provides a litsea cubeba oil mildew and moth proof slow release microcapsule and a preparation method. The Litsea cubeba oil mildew and moth proof slow release microcapsule comprises a wall material and the wall material-coated litsea cubeba oil, the wall material is prepared by employing ethyl cellulose, high-substitution hydroxypropyl cellulose, Arabic gum and maltodextrin. The preparation method comprises the following steps: dissolving ethyl cellulose by N-methyl-2-pyrrolidone to obtain ethyl cellulose viscous fluid; taking high-substitution hydroxypropyl cellulose, Arabic gum and maltodextrin and mixing by water to completely dissolve, adding the prepared ethyl cellulose viscous fluid, then adding the litsea cubeba oil under stirring, dispersing with high speed, homogenizing, spraying and drying to obtain the products. According to the invention, the screened wall material enables penetration and diffusion on the litsea cubeba oil, and enables optimization of the microcapsule preparation technology; the screened wall material can be prepared to the solid state microcapsule mildew and moth proof product with characteristics of green health, high efficiency and notoxicity, convenient usage and slow release property.

Description

technical field [0001] The invention relates to a daily anti-mildew and anti-moth agent, in particular to an anti-mold and anti-moth slow-release microcapsule of litsea cubeba oil and a preparation method thereof. Background technique [0002] Anti-mildew and anti-moth agents are widely used daily consumer goods in our country, especially in the rainy season in the Jiangnan area. The vast majority of such products currently on the market are "camphor balls" with p-dichlorobenzene as the main component, and there are very few anti-mold and moth-proof agents with natural camphor (camphor) as the main component. P-dichlorobenzene is a derivative of aromatic compounds obtained by fractional distillation of petroleum or coal tar. Studies since the late 1940s have shown that it has definite toxic effects on the human body. Prolonged exposure can cause symptoms such as dizziness and vomiting , Excessive use can cause liver and lung damage, acute hemolytic anemia, large doses of ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/28A01N65/24A01P3/00A01P7/04A01P17/00
Inventor 周立新朱永翠
Owner HUBEI UNIV
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