Antioxidative food packaging film and preparation method thereof

A technology for oxidizing food and packaging films, applied in packaging, wrapping paper, biological packaging, etc., can solve the problems of limited application scope, lack of antioxidant properties, etc., and achieve the effects of low price, increased aroma, and wide sources

Inactive Publication Date: 2017-10-20
林毅平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no anti-oxidation, and the weakness of narrow antibacterial spectrum limits its application range in food active packaging. The application of film species plays an important role

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Moisten 2.5g of carboxymethyl cellulose with an appropriate amount of ethanol, then add an appropriate amount of distilled water, and stir evenly at 40°C for later use;

[0023] (2) Weigh 4.5g of chitosan, add it to 2.0% (v / v) acetic acid solution, stir at a constant temperature of 60°C for 80 minutes to fully dissolve it, and obtain a 3.0% (w / v) shell Polysaccharide acetic acid solution is standby;

[0024] (3) Dissolve 0.3g Sophora flavescens extract and 0.7g Aloe Vera polyphenol extract in 30 mL of 1.8% acetic acid solution, and stir evenly at 35°C to obtain a mixed solution of antibacterial agent and antioxidant;

[0025] (4) Mix the prepared chitosan acetic acid solution and carboxymethyl cellulose solution at a volume ratio of 1:3, add 30 mL of the prepared antibacterial agent and antioxidant mixture, and heat and stir at 65 °C for 25 Minutes later, add 1.5g of glycerin, add water to dissolve while stirring, stir at 70°C for 15 minutes after complete dissolut...

Embodiment 2

[0028] (1) Moisten 4g of carboxymethylcellulose with an appropriate amount of ethanol, then add an appropriate amount of distilled water, and stir evenly at 50°C for later use;

[0029] (2) Weigh a certain amount of chitosan, add it to 1.5% (v / v) acetic acid solution, stir at a constant temperature of 60°C for 80 minutes to fully dissolve it, and obtain 3.0% (w / v) chitosan Chitosan acetic acid solution is standby;

[0030] (3) Dissolve 0.4g of forsythia extract and 0.8g of green tea polyphenol extract in 40 mL of 1.5% acetic acid solution, and stir evenly at 45°C to obtain a mixed solution of antibacterial agent and antioxidant;

[0031] (4) Mix the prepared chitosan acetic acid solution and carboxymethyl cellulose solution at a volume ratio of 1:2, add 40 mL of the prepared antibacterial agent and antioxidant mixture, and heat and stir at 55 °C for 30 Minutes later, add 2.5g of glycerin, add water to dissolve while stirring, stir at 65°C for 20 minutes after complete dissolu...

Embodiment 3

[0034] (1) Moisten 2.6g carboxymethyl cellulose with an appropriate amount of ethanol, then add an appropriate amount of distilled water, and stir evenly at 50°C for later use;

[0035] (2) Weigh 5.5g of chitosan, add it to 2.0% (v / v) acetic acid solution, stir at a constant temperature of 60°C for 80 minutes to fully dissolve it, and obtain a 3.5% (w / v) shell Polysaccharide acetic acid solution is standby;

[0036] (3) Dissolve 0.3g of rhubarb extract and 0.8g of papaya polyphenol extract in 30 mL of 1.8% acetic acid solution, and stir evenly at 35°C to obtain a mixed solution of antibacterial agent and antioxidant;

[0037] (4) Mix the prepared chitosan acetic acid solution and carboxymethyl cellulose solution at a ratio of 1:4, add 30 mL of the prepared antibacterial agent and antioxidant mixture, and heat and stir at 65°C for 40 minutes , add 2.0g of PEG400, add water to dissolve while stirring, stir at 70°C for 25 minutes after complete dissolution, degas with a vacuum d...

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PUM

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Abstract

The invention discloses an antioxidative food packaging film and a preparation method thereof. The antioxidative food packaging film is processed from carboxymethyl cellulose, chitosan, an antibacterial agent, an anti-oxidant, a plasticizer, distilled water, an acetic acid solution and plant essential oil. The preparation method comprises the following steps: mixing a carboxymethyl cellulose solution with a chitosan acetate solution; then adding mixed liquor of the antibacterial agent and the anti-oxidant and carrying out heating and stirring; adding the plasticizer; successively carrying out degassing and filtering so as to obtain a film forming solution; and cooling and drying the film forming solution and carrying out dip-coating with the plant essential oil so as to obtain the antioxidative food packaging film. The antioxidative food packaging film provided by the invention employs natural antibacterial and antioxidative components and can effectively prolong the shelf life of food; the raw materials used for preparation of the antioxidative food packaging film are cheap and have good biodegradability; and the antioxidative food packaging film prepared in the invention is applicable to packaging of soymilk, beverages, oatmeal, milk powder, chicken feet, dried bean curd and other food.

Description

technical field [0001] The invention relates to the field of food packaging films, in particular to an anti-oxidation food packaging film and a preparation method thereof. Background technique [0002] In recent years, with the development of science and technology, food quality and quality safety have received more and more attention from the society. Food packaging film is an important material to ensure food safety and extend the shelf life of food, and its properties and functions have also attracted much attention. [0003] At present, traditional plastic packaging films (polyethylene, polypropylene, etc.) are widely used, but these materials have some disadvantages, such as harmful gases and odors are easily produced after packaging food, and some plastic packaging is also toxic to the human body. effect. Moreover, the plastic packaging film is stable in nature, and it is not easy to decompose and rot when it is discarded in the environment after use. It will remain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L5/08C08L1/28C08K5/00C08K5/1545C08K5/053C08J5/18C08J7/04B65D65/46
CPCB65D65/466C08J5/18C08J7/0427C08J2301/28C08J2305/08C08J2401/28C08J2405/08C08J2491/00C08L1/286C08L5/08C08L2201/06C08L2201/08C08L2203/16C08K5/00C08K5/1545C08K5/053Y02A40/90Y02W90/10
Inventor 林毅平
Owner 林毅平
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