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Antibacterial composite fiber membrane and preparation method and application thereof

A technology of composite fiber membrane and mixed liquid, applied in the field of composite membrane, can solve the problems of oxidation temperature and light, volatile, sensitive, etc., achieve the effect of inhibiting Escherichia coli and Staphylococcus aureus, long action time, and broad antibacterial spectrum

Pending Publication Date: 2021-03-26
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this composite method is to directly add essential oils to the film-forming substrate, and because essential oils are difficult to dissolve in water, have poor compatibility with polar packaging materials, are easily volatile and oxidized, and are sensitive to temperature and light, etc. Low stability, difficult to carry out long-term antibacterial in packaging film

Method used

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  • Antibacterial composite fiber membrane and preparation method and application thereof
  • Antibacterial composite fiber membrane and preparation method and application thereof
  • Antibacterial composite fiber membrane and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method for an antibacterial composite fiber membrane, comprising the following steps:

[0039] 1) Preparation of antibacterial microcapsules:

[0040] A1. The citronella essential oil of 1:4 (v:v) is mixed and dissolved with ethyl acetate to obtain a mixed solution;

[0041] A2. Mix and dissolve β-cyclodextrin and deionized water to obtain a supersaturated solution;

[0042] A3. Mix the 1:10 (v:v) mixture with the supersaturated solution, stir magnetically at 60°C for 120min, then freeze-thaw at -18°C for 4h, and filter with suction to obtain the precipitate;

[0043] A4. Heating and drying the precipitate to constant weight at 50° C. to obtain antibacterial microcapsules.

[0044] 2) Preparation of antibacterial composite fiber membrane:

[0045] B1. Take by weighing 3g of antibacterial microcapsules, 7g of tapioca starch, 2g of glycerin, 6g of gelatin and 100mL of deionized water;

[0046] B2. Mix tapioca starch and deionized water and stir for 20 mi...

Embodiment 2

[0050] A preparation method for an antibacterial composite fiber membrane, comprising the following steps:

[0051] 1) Preparation of antibacterial microcapsules:

[0052]A1. The citronella essential oil of 1:4 (v:v) is mixed and dissolved with ethyl acetate to obtain a mixed solution;

[0053] A2. Mix and dissolve β-cyclodextrin and deionized water to obtain a supersaturated solution;

[0054] A3. Mix the 1:10 (v:v) mixture with the supersaturated solution, stir magnetically at 60°C for 120min, then freeze-thaw at -18°C for 4h, and filter with suction to obtain the precipitate;

[0055] A4. Heating and drying the precipitate to constant weight at 50° C. to obtain antibacterial microcapsules.

[0056] 2) Preparation of antibacterial composite fiber membrane:

[0057] B1. Take by weighing 2g of antimicrobial microcapsules, 7g of tapioca starch, 2g of glycerin, 6g of gelatin and 100mL of deionized water;

[0058] B2. Mix tapioca starch and deionized water and stir for 20 min...

Embodiment 3

[0062] A preparation method for an antibacterial composite fiber membrane, comprising the following steps:

[0063] 1) Preparation of antibacterial microcapsules:

[0064] A1. The citronella essential oil of 1:4 (v:v) is mixed and dissolved with ethyl acetate to obtain a mixed solution;

[0065] A2. Mix and dissolve β-cyclodextrin and deionized water to obtain a supersaturated solution;

[0066] A3. Mix the 1:10 (v:v) mixture with the supersaturated solution, stir magnetically at 60°C for 120min, then freeze-thaw at -18°C for 4h, and filter with suction to obtain the precipitate;

[0067] A4. Heating and drying the precipitate to constant weight at 50° C. to obtain antibacterial microcapsules.

[0068] 2) Preparation of antibacterial composite fiber membrane:

[0069] B1. Take antibacterial microcapsule 2g, tapioca starch 5g, 3% glycerin 2g, gelatin 6g and deionized water 100mL;

[0070] B2. Mix tapioca starch and deionized water and stir for 20 minutes, heat to 100°C and ...

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Abstract

The invention relates to the technical field of composite materials, and discloses an antibacterial composite fiber membrane. The antibacterial composite fiber membrane comprises the following components in parts by weight: 2-3 parts of antibacterial microcapsules, 5-7 parts of cassava starch, 1-2 parts of glycerol, 6 parts of gelatin and 100 parts of deionized water. The preparation method of theantibacterial microcapsules comprises the following steps that S1, lemongrass essential oil and ethyl acetate are taken to be mixed and dissolved to obtain a mixed solution; S2, beta-cyclodextrin anddeionized water are taken to be mixed and dissolved, and a supersaturated solution is obtained; S3, the mixed solution is added into the supersaturated solution, and magnetic stirring, freeze thawingand suction filtration are sequentially conducted to obtain a precipitate; S4, the precipitate is dried to the constant weight to obtain the antibacterial microcapsules. The lemongrass essential oilis prepared into the antibacterial microcapsules by using a beta-cyclodextrin embedding method, then the cassava starch is used as a film forming matrix, the glycerol is used as a plasticizer, the gelatin is used as a reinforcing agent, mixing is conducted to obtain a spinning solution, and the antibacterial composite fiber film is prepared by an electrostatic spinning technology, so that the effects of bacteriostasis, insect pest prevention, long action time, environment protection and safety are achieved.

Description

technical field [0001] The invention relates to the technical field of composite membranes, in particular to an antibacterial composite fiber membrane and its preparation method and application. Background technique [0002] In recent years, with the improvement of the quality of life, people pay more and more attention to food quality and food safety, and with the professional development of agricultural production, the long-distance transportation of fresh fruits and vegetables is becoming more and more common. Since fresh fruits and vegetables are fresh food with high water content, they still have life characteristics after picking, and can continue to perform respiration, and respiration is accompanied by processes such as metabolism, water evaporation, and ethylene generation, thereby promoting further ripening of fruits and vegetables. Therefore, preservation of fruits and vegetables is particularly important. [0003] Plastic wrap is a film that keeps food fresh. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D04H1/4382D04H3/02D04H3/005D01F8/18D01F8/02D01F1/10
CPCD04H1/728D04H1/4382D04H3/02D04H3/005D01F8/02D01F8/18D01F1/103D10B2401/13D10B2505/10
Inventor 刘耀文蒋雅兰王毅豪陈俊冬程岚胡欣欣李京缦李妍吴昕奕
Owner SICHUAN AGRI UNIV
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