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Method for loading plant active molecules in porous silicon dioxide slow-release molecular nest

A technology of porous silica and active molecules, applied in the chemical characteristics of fibers, textiles and papermaking, rayon manufacturing, etc., can solve the problem of insufficient drug loading and slow-release drugs, and uneven pore size of porous silica microspheres , without the use of encapsulated plant active ingredients, etc., to improve the bacteriostatic effect and hygroscopic performance, reduce the loss of active ingredients, and achieve the effect of size regulation

Inactive Publication Date: 2021-01-12
BESTEE MATERIAL (TSINGTAO) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But usually, the porous silica microspheres obtained by the above process usually have uneven pore size, different sizes, and small porosity, so that the drug loading capacity is reduced, and the effect of sufficient drug loading and sustained drug release cannot be achieved.
And there is no report of using it to encapsulate plant active ingredients and applying it to fiber masterbatch and spinning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Preparation method of porous silica active molecular nest

[0031] S1. Prepare porous silica molecular nests; add a certain amount of cetyltrimethylammonium bromide to the mixed solution of double distilled water and ethanol, add ammonia water as a catalyst, and add tetraethyl orthosilicate during stirring , continue to stir for 2h, dry at 80°C, heat the sample to 600°C at a rate of 1°C / min, and calcinate at this temperature for 6h to prepare a porous silica molecular nest;

[0032] S2. Prepare a saturated aqueous solution of plant extracts; select plant extracts, the appearance of powder is loose, no agglomeration, the color is brownish yellow, and uniform; the active ingredient content is ≥98%, the water content is ≤5%, and the total number of colonies is <99cfu / g , Salmonella and Escherichia coli shall not be detected. Add an appropriate amount of water into the beaker, heat the water bath to 90°C, then add the plant extract, stir until completely dissolve...

Embodiment 2

[0034] Example 2 Preparation method of porous silica active molecular nest

[0035] S1. Prepare porous silica molecular nests; add a certain amount of cetyltrimethylammonium bromide to the mixed solution of double distilled water and ethanol, add ammonia water as a catalyst, and add tetraethyl orthosilicate during stirring , continue to stir for 2h, dry at 70°C, heat the sample to 600°C at a rate of 1°C / min, and calcinate at this temperature for 6h to prepare a porous silica molecular nest;

[0036] S2. Prepare a saturated aqueous solution of plant extracts; select plant extracts, the appearance of powder is loose, no agglomeration, the color is brownish yellow, and uniform; the active ingredient content is ≥98%, the water content is ≤5%, and the total number of colonies is <99cfu / g , Salmonella and Escherichia coli shall not be detected. Add an appropriate amount of water into the beaker, heat the water bath to 90°C, then add the plant extract, stir until completely dissolve...

Embodiment 3

[0043] Example 3 Preparation method of porous silica active molecular nest

[0044] S1. Prepare porous silica molecular nests; add a certain amount of cetyltrimethylammonium bromide to the mixed solution of double distilled water and ethanol, add ammonia water as a catalyst, and add tetraethyl orthosilicate during stirring , continue to stir for 2h, dry at 90°C, heat the sample to 600°C at a rate of 1°C / min, and calcinate at this temperature for 6h to prepare a porous silica molecular nest;

[0045] S2. Prepare a saturated aqueous solution of plant extracts; select plant extracts, the appearance of powder is loose, no agglomeration, the color is brownish yellow, and uniform; the active ingredient content is ≥98%, the water content is ≤5%, and the total number of colonies is <99cfu / g , Salmonella and Escherichia coli shall not be detected. Add an appropriate amount of water into the beaker, heat the water bath to 90°C, then add the plant extract, stir until completely dissolve...

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Abstract

The invention provides a method for loading plant active molecules in a porous silicon dioxide slow-release molecular nest. The method comprises the following steps of S1, drying the porous silicon dioxide molecular nest; S2, grinding the silicon dioxide molecular nest for the first time; S3, preparing a solution; S4, mixing the silicon dioxide molecular nest and the active molecular solution formultiple times; and S5, performing drying and grinding. The porous silicon dioxide molecular nest prepared by the method is uniform in pore diameter, regular in size, large in porosity, large in specific surface area and large in plant extract loading capacity, the plant extract is encapsulated in the porous silicon dioxide molecular nest by adopting a core-shell structure, and active substances are slowly released, so that the loss, caused by high temperature in subsequent master batch and melt spinning processes, of active ingredients is reduced; and the antibacterial effect and the moistureabsorption performance of textile are improved.

Description

technical field [0001] The invention relates to the technical field of active molecular nests, in particular to a method for loading plant active molecules on porous silicon dioxide slow-release molecular nests. Background technique [0002] Silica, also known as silica, is widely distributed in nature, such as quartz and quartz sand. White or colorless, the higher iron content is pale yellow. Density 2.2~2.66. Melting point 1670°C (tridymite); 1710°C (cristobalite). The boiling point is 2230°C and the relative dielectric constant is 3.9. Insoluble in water and slightly soluble in acid, it can work with molten alkalis in granular state. It is used to make glass, water glass, pottery, enamel, refractory materials, ferrosilicon, molding sand, elemental silicon, etc. It is a hard and insoluble solid. It often appears in three variants: quartz, tridymite, and cristobalite. Almost 65% of the 16 kilometers below the ground is silica ore. Natural silica is divided into two cat...

Claims

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Application Information

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IPC IPC(8): D01F1/10
CPCD01F1/103
Inventor 黄效华朱美芳伏广伟蔡强刘健甄丽姜义军刘建国
Owner BESTEE MATERIAL (TSINGTAO) CO LTD