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Antibacterial film with bacterial cellulose loaded with gold nanosheets as well as preparation method and application of antibacterial film

A technology of bacterial cellulose film and bacterial cellulose, which is applied in the field of microbial technology and inorganic materials, can solve the problems of little progress in antibacterial and disease prevention, achieve good antibacterial ability and self-degradation ability, and the preparation method is simple and environmentally friendly. Effect of Tensile Strength and Elongation

Pending Publication Date: 2021-11-02
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, to the best of our knowledge, little progress has been made in using bacterial cellulose for antibacterial and disease control

Method used

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  • Antibacterial film with bacterial cellulose loaded with gold nanosheets as well as preparation method and application of antibacterial film
  • Antibacterial film with bacterial cellulose loaded with gold nanosheets as well as preparation method and application of antibacterial film
  • Antibacterial film with bacterial cellulose loaded with gold nanosheets as well as preparation method and application of antibacterial film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation of bacterial cellulose-loaded antibacterial films of gold nanosheets includes the following steps:

[0034] (1) Weigh a sample of 0.6-0.8g of bacterial cellulose and put it in a beaker, then add 100mL of 0.1mol NaoH solution, boil at 95°C for 2 hours, cool it to room temperature, the transparent solution becomes an opaque suspension , vacuum-dried for 24 hours to obtain a pure bacterial cellulose (BC) sample.

[0035] (2) Pipette the chloroauric acid solution 1mL, 2mL, 3.4mL of 10% with a pipette gun, transfer to the 10mL volumetric flask respectively, and configure the chloroauric acid solution of 30mM, 60mM, 100mM, the step ( 1) The pure bacterial cellulose sample was immersed in 30mM chloroauric acid solution and irradiated by ultraviolet light for 12h, denoted as AuNPs@BC; in 60mM chloroauric acid solution, irradiated by ultraviolet light for 12h, denoted as AuNSs-S@BC and 100mM chloroauric acid The ultraviolet light in the solution was irradiated f...

Embodiment 2

[0038] Place the AuNPs@BC, AuNSs-S@BC, and AuNSs-L@BC prepared in Example 1 in the solid medium containing the bacterial liquid, and incubate them in a constant temperature incubator for 24 hours at a temperature of 37°C and the shaking frequency of the incubator 78r / min, the results showed that the prepared AuNSs-S@BC had obvious antibacterial effect. See Figure 5, Bacterial cellulose-loaded gold nanosheet antimicrobial film (referred to as the antibacterial effect of AuNSs-S@BC) obtained by immersing the pure sample of bacterial cellulose in 60mM chloroauric acid solution and then irradiated for 12h. Figure 5 It can be seen from the figure that AuNSs-S@BC has good antibacterial effect and has obvious antibacterial zone.

Embodiment 3

[0040] The AuNSs@BC of Example 2 was placed in the solid medium containing the bacterial solution and incubated for 24 hours, was taken out, rinsed with deionized water and ethanol, and dried at 60°C to obtain a reusable AuNSs@BC. Carry out repeated experiments under the same conditions of embodiment two, the result proves that reusable still has better antibacterial effect, see Figure 6 , for the antibacterial effect of reusable AuNSs-S@BC after cleaning, from the attached Figure 6 It can be seen from the figure that it still has obvious antibacterial effect.

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Abstract

The invention belongs to the field of microbial technology and inorganic materials, and relates to an antibacterial film with bacterial cellulose loaded with gold nanosheets and a preparation method and application of the antibacterial film. The preparation method comprises the following steps: immersing a bacterial cellulose film into a 0.1 M NaOH solution at 90-95 DEG C, then washing the bacterial cellulose film with distilled water until the bacterial cellulose film is neutral, and carrying out vacuum drying to obtain a bacterial cellulose pure sample; and immersing the obtained bacterial cellulose pure sample into a chloroauric acid solution, conducting irradiating with ultraviolet light, conducting washing with deionized water after the ultraviolet light irradiation, and carrying out vacuum drying to obtain the antibacterial film with bacterial cellulose loaded with gold nanosheets. The preparation method of the ultraviolet light induced bacterial cellulose reduced gold nanosheet is simple, environment-friendly and reusable, and the bacterial cellulose has good biodegradability, so that the bacterial cellulose loaded gold nanosheet has good antibacterial ability and self-degradation ability.

Description

technical field [0001] The invention relates to an antibacterial film loaded with gold nanosheets on bacterial cellulose and a preparation method and application thereof, belonging to the field of microbial technology and inorganic materials. Background technique [0002] Antimicrobial materials are of great significance for solving today's infectious diseases and bacteria endangering human life and health, so the development of reusable and environmentally friendly antibacterial films has become a research hotspot in many other related fields such as biochemistry and environmental chemistry. Bacterial cellulose (BC) is a natural nano-biological material with abundant reserves in nature, which is biodegradable and has good biocompatibility. However, the disadvantage of bacterial cellulose is that it does not have antibacterial ability. For bacteria, bacterial cellulose cannot inhibit or kill bacteria, and is easily corroded by microorganisms, making it difficult to deal with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N25/34A01P1/00A61L15/18A61L15/28A61L15/42A61L15/46A61L15/64
CPCA01N59/16A01N25/34A61L15/28A61L15/18A61L15/42A61L15/46A61L15/64A61L2300/404A61L2300/232A61L2300/102A61L2400/12C08L1/02
Inventor 周满孟珂卉李忠玉梁倩徐松梁玄薛苏婷
Owner CHANGZHOU UNIV
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