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Osmanthus flower essence-silk fibroin microcapsule and preparation method thereof

A technology of silk fibroin and sweet-scented osmanthus essence, applied in the field of fine chemical industry, can solve the problems of difficult industrial production, complicated preparation method, high temperature heating, etc. Effect

Active Publication Date: 2018-09-04
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The second object of the present invention is to provide a kind of sweet-scented osmanthus essence-silk with simple preparation method and beneficial to industrial production in order to solve technical problems such as high temperature heating, complicated preparation method and difficulty in industrialized production in the preparation process of above-mentioned silk fibroin microcapsules. A preparation method of fibroin microcapsules, the preparation method is to emulsify osmanthus essence with silk fibroin, then add an inducer and freeze to induce the self-assembly of silk fibroin to form a shell of essence microcapsules, and add a cross-linking agent to solidify the silk fibroin after thawing Osmanthus fragrans essence-silk fibroin microcapsules obtained from protein shell

Method used

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  • Osmanthus flower essence-silk fibroin microcapsule and preparation method thereof
  • Osmanthus flower essence-silk fibroin microcapsule and preparation method thereof
  • Osmanthus flower essence-silk fibroin microcapsule and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0057] A sweet-scented osmanthus essence-silk fibroin microcapsule, calculated by mass percentage, the composition and content of the raw materials used in its preparation process are as follows:

[0058]

[0059]

[0060] The molecular weight of described polyvinyl alcohol is 75000-80000;

[0061] The inducer is ethanol;

[0062] The crosslinking agent is glutaraldehyde.

[0063] The preparation method of above-mentioned a kind of sweet-scented osmanthus essence-silk fibroin microcapsules specifically comprises the steps:

[0064] (1) Add 4g of silk fibroin to 78.7g of deionized water to obtain an aqueous solution of silk fibroin, then add 8g of sweet-scented osmanthus essence to the aqueous solution of silk fibroin, control the rotation speed at 500rpm, and stir and mix at a temperature of 30°C 30min, homogeneous 5min under 10000r / min then, obtain milky white sweet-scented osmanthus essence emulsion;

[0065] (2), 1.5g polyvinyl alcohol and 7.5g ethanol are added su...

Embodiment 2

[0068] A sweet-scented osmanthus essence-silk fibroin microcapsule, calculated by mass percentage, the composition and content of the raw materials used in its preparation process are as follows:

[0069]

[0070] The molecular weight of described polyvinyl alcohol is 75000-80000;

[0071] The inducer is polyethylene glycol with a molecular weight of 380-400;

[0072] The crosslinking agent is glutaraldehyde.

[0073] The preparation method of above-mentioned a kind of sweet-scented osmanthus essence-silk fibroin microcapsules specifically comprises the steps:

[0074] (1) Add 5g of silk fibroin to 80.9g of deionized water to obtain a silk fibroin aqueous solution, then add 10g of sweet-scented osmanthus essence to the silk fibroin aqueous solution, control the rotation speed at 500rpm, and stir and mix at a temperature of 30°C 20min, then homogeneous 5min under 10000r / min, obtain milky osmanthus essence emulsion;

[0075] (2), 0.9g polyvinyl alcohol and 3g polyethylene ...

Embodiment 3

[0079] A sweet-scented osmanthus essence-silk fibroin microcapsule, calculated by mass percentage, the composition and content of the raw materials used in its preparation process are as follows:

[0080]

[0081] The molecular weight of described polyvinyl alcohol is 75000-80000;

[0082] The inducer is ethanol;

[0083] The crosslinking agent is glutaraldehyde.

[0084] (1) Add 2g of silk fibroin to 88g of deionized water to obtain an aqueous silk fibroin solution, then add 6g of sweet-scented osmanthus essence to the aqueous silk fibroin solution, control the speed at 300rpm, and stir and mix for 20min at a temperature of 30°C , then homogenized for 5min at 10000r / min to obtain milky osmanthus essence emulsion;

[0085] (2), 0.5g polyvinyl alcohol and 3g ethanol are added successively in the milky white sweet-scented osmanthus essence emulsion of step (1) gained, the control rotating speed is 300rpm, temperature is to carry out stirring and mixing 30min under the condi...

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Abstract

The invention discloses an osmanthus flower essence-silk fibroin microcapsule and a preparation method thereof. The osmanthus flower essence-silk fibroin microcapsule is prepared from the following raw materials in percentage by weight: 6 to 10 percent of osmanthus flower essence, 2 to 5 percent of silk fibroin, 0.5 to 1.5 percent of polyvinyl alcohol, 3 to 9 percent of an inducer, 0.1 to 0.5 percent of a crosslinking agent and the balance of deionized water. The osmanthus flower essence-silk fibroin microcapsule is prepared by the steps of emulsifying the osmanthus flower essence by the silkfibroin, adding the inducer and performing freeze-induced self-assembling to obtain the osmanthus flower essence-silk fibroin microcapsule, wherein the average grain diameter is 3.4 to 5.3 microns, and the maximal essence carrying quantity can reach as high as 45 to 47 percent. The osmanthus flower essence-silk fibroin microcapsule provided by the invention has high biological safety and can be widely applied to the fields of medicines, daily chemicals, textiles, leather and the like.

Description

technical field [0001] The invention relates to an osmanthus essence microcapsule and a preparation method thereof, belonging to the field of fine chemicals. Background technique [0002] Silk is one of the earliest natural proteins used by human beings. It has good biocompatibility, non-toxic, non-polluting, non-irritating and other characteristics. Silk fibroin is a natural protein prepared by dissolving and dialysis after silk degumming. Silk fibroin consists of alternating blocks of hydrophobic and hydrophilic amino acids along the molecular chain, giving the silk fibroin molecule its amphipathic character. Silk fibroin self-assembles at the fluid interface to form a stable viscoelastic surface or interface layer, which can be used to prepare microcapsules or microspheres. At present, the main methods for preparing silk fibroin capsules or microspheres include spray drying method, complex coacervation method, salting out method, solvent diffusion method and so on. How...

Claims

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Application Information

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IPC IPC(8): B01J13/02
CPCB01J13/02
Inventor 胡静何磊邓维钧
Owner SHANGHAI INST OF TECH
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