Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Litsea cubeba oil microcapsule and preparation method thereof

A technology of Radix japonica oil and microcapsules is applied in the fields of botanical equipment and methods, edible seed preservation, chemicals for biological control, etc. Long-lasting and easy-to-use effects

Inactive Publication Date: 2015-04-01
JIAYING UNIV +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using ethyl cellulose, highly substituted hydroxypropyl cellulose, acacia gum and maltodextrin as composite wall materials to prepare litsea grass Litsea cubeba oil microcapsules have obtained a solid product with good natural slow-release properties, which are used for mildew-proof and moth-proof effects, and have similar effects with the product of the present invention, but this litsea cubeba oil anti-mildew and moth-proof slow-release microcapsules are effective. The oil load is only about 22%, and the use effect is not ideal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Litsea cubeba oil microcapsule and preparation method thereof
  • Litsea cubeba oil microcapsule and preparation method thereof
  • Litsea cubeba oil microcapsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take 2g of sodium alginate, add 65mL of water, stir, heat to 55°C, keep constant temperature, and make it into a uniform viscous liquid; then add 6g of litsea cubeba oil, stir evenly; finally account for 1% of the total amount of emulsion A The aqueous solution containing 2% Tween-80 was stirred thoroughly to obtain emulsion A, which was set aside.

[0032] Another 1.6g of chitosan and 8g of anhydrous calcium chloride were added to 150mL of water to make a solution, and the pH was adjusted to 5.5 with acetic acid to obtain coagulation bath B for use.

[0033]Drop the emulsion A into the coagulation bath B with a needle to obtain milky white microcapsules, store them sealed for 30 minutes, filter, collect the microspheres, dry in an oven at 50°C for 1 hour, wash with 5mL of petroleum ether, and obtain yellow granular products . The embedding rate of essential oil is 95.1%, and the oil content of microcapsules is 57.9%.

Embodiment 2

[0035] Take 2g of sodium alginate, add 98mL of water, stir, heat to 55°C, keep constant temperature, and make it into a uniform viscous liquid; then add 8g of litsea cubeba oil, stir evenly; finally account for 0.8% of the total amount of emulsion A The aqueous solution containing 1% Tween-80 was stirred thoroughly to obtain emulsion A, which was set aside.

[0036] Take another 6.2g chitosan and 3.8g anhydrous calcium chloride, add 185mL water to make a solution, adjust the pH to 5 with acetic acid, and obtain the coagulation bath B for use.

[0037] Drop emulsion A into solution B with a needle to obtain milky white microcapsules, store them sealed for 40 minutes, filter, collect the microspheres, dry in an oven at 50°C for 2 hours, wash with 8 mL of petroleum ether, and obtain yellow granular products. The embedding rate of essential oil is 85.7%, and the oil content of microcapsules is 42.5%.

Embodiment 3

[0039] Take 3g of sodium alginate, add 97mL of water, stir, heat to 60°C, keep the temperature constant, and make it into a uniform viscous liquid; then add 9g of litsea cubeba oil, stir evenly; finally account for 1% of the total amount of emulsion A The aqueous solution containing 2% Tween-80 was stirred thoroughly to obtain emulsion A, which was set aside.

[0040] Another 3.2g of chitosan and 4.8g of anhydrous calcium chloride were added to 152mL of water to form a solution, and the pH was adjusted to 6 with 1mol / L sodium hydroxide solution to obtain coagulation bath B for use.

[0041] Drop emulsion A into solution B with a needle to obtain milky white microcapsules, store them sealed for 50 minutes, filter, collect the microspheres, dry in an oven at 50°C for 2 hours, wash with 10 mL of petroleum ether, and obtain yellow granular products. The embedding rate of essential oil is 91.4%, and the oil content of microcapsules is 51.2%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a litsea cubeba oil microcapsule and a preparation method thereof, belonging to the technical field of mildew-proof and insecticidal capsules, and its technical points include using litsea cubeba oil as the core material, sodium alginate as the main wall material and containing 1% The aqueous solution of ~5% chitosan and 2%~5% anhydrous calcium chloride is the coagulation bath liquid, which is made by composite coacervation method; the mass ratio of the sodium alginate and litsea cubeba oil is 1:1~4; The preparation method is mainly as follows: first prepare the emulsion A of sodium alginate and litsea cubeba oil, then prepare the aqueous solution of chitosan and anhydrous calcium chloride as the coagulation bath B, drop the emulsion A into the coagulation bath B, and solidify After a certain period of time, filter again to obtain the litsea cubeba oil microcapsules of the present invention; the present invention aims to provide a litsea cubeba oil with higher content of litsea cubeba oil, longer use time, mildew resistance and good insecticidal effect The microcapsule and its preparation method are mainly used for mildew prevention and insecticide of food, and also can be used for moldproof and insect prevention of clothes.

Description

technical field [0001] The present invention relates to a kind of microcapsule used for mildew prevention and insecticide, more specifically, relates to a kind of litsea cubeba oil microcapsule. The invention also relates to a preparation method of the litsea cubeba oil microcapsule. Background technique [0002] Litsea cubeba oil is a natural plant essential oil obtained by steam distillation of litsea cubeba fruit, bark and leaves. It has a strong lemon fragrance, and its main component is citral, and its content is generally 60% to 80%. Litsea cubeba oil has strong bactericidal and anti-insect activities. It has a very good inhibitory or killing effect on more than ten kinds of pathogenic bacteria such as Staphylococcus aureus, Neisseria gonorrhoeae, Escherichia coli and many molds such as Candida, trichophyton, Aspergillus niger, Aspergillus flavus and Aspergillus fumigatus , is known to be one of the plant natural products with the broadest antibacterial spectrum and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A23B9/26A01N65/24A01N25/28A01P1/00A01P3/00A01P7/04A01P17/00
Inventor 彭梦侠
Owner JIAYING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com