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Fibroin composite coating liquid and method of preparing the same and applications

A technology of silk protein and composite coating, applied in bandages, absorbent pads, medical science, etc., to achieve the effect of unique scientific process, good effect and high nutritional value

Inactive Publication Date: 2008-10-08
徐国文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still no silk products used to prepare coating liquids for skin-friendly products for women, infants, and young children.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation steps of silk protein composite coating solution are as follows:

[0037] 1. Preparation of silk protein:

[0038] (1) Weigh 100 kilograms of silk, soak silk for 12 hours with tap water, then wash 5 times with pure water, dehydrate and dry;

[0039] (2) Put the silk into a high-pressure degumming kettle, degumming for 0.5 hour under the steam pressure of 0.15mpa according to the bath ratio of silk:water 1:6, remove the silk fibroin, wash it in pure water, dehydrate it with a centrifuge, weigh Get dry silk fibroin 74kg.

[0040] (3) Put the dry silk fibroin into the enamel tank and soak for 22 hours according to the bath ratio of silk fibroin: NaOH solution of 6% weight concentration=1:10;

[0041] (4) Neutralize with 10% hydrochloric acid until the pH is 6.2, and dehydrate with a centrifuge.

[0042] (5) Put it in a drying room and dry it for 12 hours at a temperature of 70°C, and take it out after drying until the moisture content is 9%;

[0043] (6...

Embodiment 2

[0053] The preparation steps of silk protein composite coating solution are as follows:

[0054] 1. Preparation of silk protein:

[0055] (1) Weigh 100 kilograms of silk, soak silk for 12 hours with tap water, then wash 5 times with pure water, dehydrate and dry;

[0056] (2) Put the silk into a high-pressure degumming kettle, press silk: water 1:8, degumming for 1.5 hours under the steam pressure of 0.2mpa, remove the silk fibroin, wash it in pure water, dehydrate it with a centrifuge, and weigh it as dry silk Vegetable 71kg;

[0057] (3) According to the bath ratio of silk fibroin: 4% NaOH solution = 1:12, put the dry silk fibroin in an enamel tank for 24 hours, neutralize it with 10% hydrochloric acid until the pH is 6, and dehydrate it with a centrifuge ;

[0058] (4) Dry in a drying room for 12 hours, at a temperature of 80°C for 10 hours, and dry until the moisture content is 8.2%. Take it out. Pulverize 4 times with a precision pulverizer. Dissolve 40.2kg of silk p...

Embodiment 3

[0068] The preparation steps of silk protein composite coating solution are as follows:

[0069] 1. Preparation of silk protein:

[0070] (1) Weigh 100 kilograms of silk, soak silk for 12 hours with tap water, then wash 5 times with pure water, dehydrate and dry;

[0071] (2) Put the silk into a high-pressure degumming kettle, press silk: water 1:8, degumming for 2 hours under 0.1mpa steam pressure, remove the silk fibroin, wash it in pure water, dehydrate it with a centrifuge, and weigh it as dry silk Vegetable 73kg;

[0072] (3) According to the bath ratio of silk fibroin: NaOH solution of 4% weight concentration=1:12, put the dry silk fibroin into the enamel tank for 30 hours; Machine dehydration;

[0073] (4) Dry in a drying room for 12 hours at 70°C for 10 hours, bake until the moisture content is 8.1%, take out; pulverize 4 times with a precision pulverizer. Dissolve 41.3kg of silk powder into 400kg of pure water, stir well, filter with nanofiltration membrane, dry t...

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Abstract

The invention discloses a composite coating liquid of fibroin and a preparation method and an application thereof. The composite coating liquid of fibroin is composed of the following components: 2 to 10 wt percent of crosslinking agent, 0.5 to 2 wt percent of acetate acid, 10 to 20 percent of fibroin and water which accounts for the rest weight proportion. The preparation method of the invention comprises the steps of (1) the preparation of the fibroin and (2) the preparation of the composite coating liquid of fibroin. The fibroin of the invention has the functions of naturally moisturizing the skin, antisepsis, antianaphylaxis, etc. and is applicable to the preparation of lotions for women, infants or children; thus achieving the purposes of moistening the skin, absorbing moisture, resisting bacteria and treating and preventing skin allergy; the product prepared by the invention has significant functions of moistening the skin, absorbing moisture, venting, preventing skin allergy and inhibiting bacteria, especially has remarkable inhibited effect on pathogenic anaerobion and acid-producing bacteria.

Description

technical field [0001] The invention relates to a silk protein composite coating solution, a preparation method and application thereof. Background technique [0002] Silk protein contains 18 kinds of amino acids, of which glycine, alanine, and serine account for more than 70%. It is a nutritional substance with outstanding functions and is widely used in medicine, food, cosmetics, leather and fabrics. Daily hygiene and skin-friendly products (sanitary napkins, panty liners, diapers, cotton pads, etc.) have huge market potential. Silk protein is rich in serine and threonine, which are natural nutrients that are compatible with human skin; moreover, silk protein contains extremely rich polar side amino acids, rich in NMF, and has high-quality water absorption and radiation. Moisture and moisturizing properties can regulate the nutritional function of the skin; at the same time, studies have found that silk protein has a preventive effect on itching and eczema caused by weath...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/32A61L15/42
Inventor 徐国文郭明方于海宁杜惠生
Owner 徐国文
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