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Antibacterial protein film as well as preparation method and application thereof

An antibacterial protein and soybean protein isolate technology, applied in the field of antibacterial film, can solve the problems of unstable performance and inability to distribute inorganic nano materials evenly, and achieve the effects of high performance stability, good ultraviolet shielding and good uniformity

Inactive Publication Date: 2018-08-14
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the prior art, inorganic nanomaterials cannot be uniformly distributed in the protein system, which leads to the delamination of the membrane, so that the performance is relatively unstable
And there is no report about the preparation of soybean protein isolate and nano-zinc oxide film

Method used

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  • Antibacterial protein film as well as preparation method and application thereof
  • Antibacterial protein film as well as preparation method and application thereof
  • Antibacterial protein film as well as preparation method and application thereof

Examples

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preparation example Construction

[0030] In addition, the present invention also provides a method for preparing the above antibacterial protein film, which specifically includes the following steps:

[0031] 1) Weighing raw materials, including soybean protein isolate, nano zinc oxide, plasticizer, dispersant and solvent water;

[0032] 2) Add nano-zinc oxide and dispersant to the solvent water, then add soybean protein isolate, heat and stir, and disperse; wherein, in order to fully mix the materials, the mixing operation of raw materials is generally carried out under magnetic stirring, and the magnetic stirring speed is generally not More than 1400r / min, and add slowly when adding soybean protein isolate; heating and stirring operation usually adopts constant temperature water bath heating under the condition of 30-100 ℃, and magnetic stirring at the same time for 10-60min, and the stirring speed generally does not exceed 1400r / min;

[0033] 3) Cool to room temperature, filter to take the filtrate, then ad...

Embodiment 1

[0038] (1) 0.01g nano-zinc oxide and 0.3g Tween are added to 97mL water to obtain a mixed solution;

[0039] (2) Add 2 g of soybean protein isolate to the mixed solution obtained in step (1), heat in a constant temperature water bath at 30° C., and magnetically stir for 10 minutes at the same time;

[0040] (3) filter and get the filtrate after being cooled to room temperature;

[0041] (4) Get 1.5g of glycerin and join in the filtrate gained in step (3), and magnetically stir for 20min to obtain a film-forming mixed solution;

[0042] (5) Pour the film-forming mixed liquid obtained in step (4) onto a plexiglass plate, and then place it in a drying oven at 70° C. for 5 hours to dry.

Embodiment 2

[0044] (1) Under magnetic stirring, 1.0 g of nano-zinc oxide and 1.5 g of Tween were added to 90 mL of water to obtain a mixed solution;

[0045] (2) Add 4 g of soybean protein isolate to the mixed solution obtained in step (1), heat in a constant temperature water bath at 50° C., and magnetically stir for 20 min at the same time;

[0046] (3) filter and get the filtrate after being cooled to room temperature;

[0047] (4) 4g glycerol is added in the filtrate gained in step (3), and magnetically stirred for 10min to obtain a film-forming mixed solution;

[0048] (5) Pour the film-forming mixture obtained in step (4) onto a plexiglass dish, and put it in a drying oven at 50°C for 4 hours to dry.

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Abstract

The invention discloses an antibacterial protein film as well as a preparation method and application thereof. The antibacterial protein film is prepared from the following raw materials in percentageby weight: 2 to 10 percent of soybean protein isolate, 0.01 to 3 percent of nano-zinc oxide and the balance of auxiliary agents. The raw materials are combined according to a specific proportioning ratio; all raw material ingredients are mutually assisted to achieve the cooperated effect, so that the protein film has excellent anti-bacterial performance and mechanical performance; the product ofthe protein film has high uniformity and high performance stability, and can be applied to the fields of food packaging, medicine sanitation articles and the like.

Description

technical field [0001] The invention relates to an antibacterial film, in particular to an antibacterial protein film and its preparation method and application. Background technique [0002] In recent years, with the development of food technology and consumers' requirements for high-quality food, more and more attention has been paid to green and environmentally friendly natural polymer membrane materials, among which natural polymer antibacterial membranes have become one of the hot spots. [0003] Antibacterial materials refer to a class of functional materials that can inhibit the growth, reproduction and activity of microorganisms. The more commonly used antibacterial materials include two categories: inorganic and organic. Among them, compared with organic antibacterial materials, inorganic antibacterial materials have the characteristics of broad spectrum, durability and safety. And among inorganic antibacterial materials, inorganic nano antibacterial materials hav...

Claims

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Application Information

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IPC IPC(8): C08L89/00C08K3/22C08J5/18
CPCC08J5/18C08J2389/00C08K2003/2296C08K2201/011
Inventor 王喆王洁卿户帅锋王怀雨
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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