Egg white water gel membrane/composite membrane based on unidirectional nanopore dehydration and preparation method thereof

A nanoporous, gel film technology, applied in or conductive egg white hydrogel film/composite film/guide field, to achieve the effects of good growth and proliferation, strong mechanical properties, and strong tensile properties

Pending Publication Date: 2022-07-05
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the technical scheme of preparing egg white bioglass with homogeneous egg white or single homogeneous egg white as a raw material, and then heat-treated into a functional egg white hydrogel film / composite film with excellent mechanical properties

Method used

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  • Egg white water gel membrane/composite membrane based on unidirectional nanopore dehydration and preparation method thereof
  • Egg white water gel membrane/composite membrane based on unidirectional nanopore dehydration and preparation method thereof
  • Egg white water gel membrane/composite membrane based on unidirectional nanopore dehydration and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This example provides the preparation of the homogeneous egg white liquid required to prepare each example according to the technical solution of the present invention.

[0028] Use fresh eggs (Lan Fei, Shanghai Dahe Egg Products Co., Ltd., sole proprietorship in Japan, Shanghai, China) to collect the egg white liquid through the egg white separator. Because the egg white concentrated liquid and the diluted liquid are difficult to fully mix evenly, the egg white can be placed in a high-speed pulverizer. Perform intermittent high-speed shearing (500-5000 rpm) for 5-10 min. After removing the egg white foam, the rest of the egg white liquid is centrifuged at 5000-15,000 rpm for 10-20 min to remove the trace sediment and a small amount of white floating matter. The supernatant is the egg white homogenate.

Embodiment 2

[0030] This embodiment provides the preparation method of egg white bioglass described in the technical solution of the present invention.

[0031] see attached figure 1 , the schematic structural diagram of the unidirectional nanopore dehydration mold provided in this embodiment; the processing mold for unidirectional nanopore dehydration mainly consists of a film-forming cup 1 with an inner cavity diameter of 30 mm or 80 mm, a nanoporous filter membrane 2, a fixed ring 3. The sample hole 4 and the sample hole rubber stopper 5 are composed. The circular nanoporous filter membrane 2 moistened in water is screwed and fixed by the inner screw of the fixing ring 3, and placed on the horizontal mold shelf. First, use a pipette to add a little distilled water through the sample hole 4 to test the fixed filter membrane 2. Whether there is water leakage. If water leaks, repeat the above operation until no water leaks.

[0032] Use a pipette to add a certain volume of homogeneous e...

Embodiment 3

[0034] This embodiment provides the preparation method of the egg water gel membrane / composite membrane described in the technical solution of the present invention.

[0035] The egg white bioglass prepared by unidirectional nanopore dehydration according to Example 1 and Example 2 must be subjected to post-processing heat treatment, and immediately packed into polypropylene (PP) sealed bags or wrapped with tin platinum paper after being removed from the mold , placed in high temperature steam for 1 ~ 4 h; or placed in 100 ~ 140 ℃ high temperature oven for 1 ~ 4 h; that is, a water-insoluble, good mechanical strength, soft egg water gel film (referred to as EWHM).

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Abstract

The invention relates to an egg white water gel membrane / composite membrane based on unidirectional nanopore dehydration and a preparation method thereof. Egg white or a mixture solution of egg white is placed in a container with a nanopore filter membrane as the bottom, transparent, fragile and water-soluble egg white bioglass is obtained through unidirectional nanopore dehydration, and after heat treatment, an egg white water gel membrane / composite membrane which is in a wet state, transparent, elastic and high in tensile property is prepared; the tensile strength reaches 5.8 MPa, the breaking elongation is 90-110%, and the swelling rate is 60-130%; and preparing the polypyrrole modified egg white water gel conductive film from the egg white water gel film / composite film through a polymerization reaction. On the prepared egg white water gel film, the mouse fibroblast L929 has good insertion and proliferation. The egg white water gel material based on unidirectional nanopore dehydration provided by the invention can be widely applied to the fields of medical biological materials, 3D brackets, biomimetic materials, drug delivery and slow release, wearable electronic equipment and the like.

Description

technical field [0001] The invention relates to homogenized egg whites made into water-soluble biological glass and then heat-treated to form an egg water gel film / composite film and a conductive egg water gel film and a preparation method thereof, in particular to a kind of excellent mechanical strength and good biocompatibility A preparation method of a flexible or conductive egg water gel film / composite film / conductive film belongs to the fields of biological materials, bionic materials, wearable devices, medical tissue engineering materials and the like. Background technique [0002] As a wide range of high-quality and cheap animal-derived protein, egg white has a variety of physiological functions and biochemical activities, and its amino acid composition is the closest to the human body, and plays an important role in maintaining human health. It has been widely used in medical, food, biological engineering and other fields. Egg white accounts for about 60% of the tot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L89/00C08L79/04
CPCC08J5/18C08J2389/00C08J2479/04
Inventor 张雨青董璇李际鑫荆凤雅张萌钟志豪王恒达魏珍珍赵书祥翁瑜洁卫正国王海燕
Owner SUZHOU UNIV
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