Antibacterial cellulose-based edible packaging film and preparation method thereof

Abstract

The invention discloses an antibacterial cellulose-based edible packaging film. The antibacterial cellulose-based edible packaging film is prepared from, by weight, 32-38 parts of nano cellulose suspension liquid, 12-16 parts of pretreated peach gum, 18-22 parts of modified guar, 4-8 parts of maltitol, 1-3 parts of ethyl maltol, 3-5 parts of tolu balsam, 3-5 parts of honey and 18-24 parts of water. The antibacterial cellulose-based edible packaging film has advantages that nano cellulose is high in strength and large in specific surface area, chitosan is great in water and air blocking performance, mechanical performance and the like, a molecular chain has active <->NH2 and <->OH, and intermolecular interaction with nano cellulose can be realized, so that system stability is improved; in addition, antibacterial compound liquid is made from eleocharis dulcis peel and fructus forsythiae mixed extract liquid, the bactericidal rate of staphylococcus aureus and escherichia coli can be increased, and by interaction reaction between nisin solution and chitosan, antibacterial effects are further improved.

Description

technical field [0001] The invention relates to the technical field of edible packaging films, in particular to an antibacterial cellulose-based edible packaging film and a preparation method thereof. Background technique [0002] With the development of the modern food industry, food packaging is constantly updated. A new type of food packaging technology material that can improve the contradiction between packaging materials and environmental protection--edible packaging stands out. Edible packaging materials refer to when the packaging function is realized. , the material can be transformed into an edible raw material for animals or humans. It is a special packaging material that can realize the functional transformation of packaging materials. It is a resource-based and environmentally friendly packaging material because of its good degradability, safety , oxygen permeability, moisture resistance, oil resistance and other properties, so its research is of great significa...

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Problems solved by technology

[0003] The existing Chinese patent document (publication number: CN105061817B) discloses an edible packaging film. The edible packaging film is made of the following components by weight percentage: 65% modified starch, 12% galactan, 13% laminin, 4% glycerin, 3% shellac resin, 2% gelatin, 1% sodium stearate. Starch has good bonding properties to form a packaging film, but its mechanical properties are poor. In addition, the packaging film does not have antibacterial properties and has a single function, which still needs further improvement

[0004] The existing Chinese patent literature (publication number: CN103254469B) discloses an edible film material and a preparation method thereof. Nanocellulose is dispersed in water by a high-pressure homogenization method to form a nanocellulose colloid. The pressure of the high-pressure homogenization is 15 ~20MPa; step B: using an aqueous solution containing 50~70wt% ethanol as a solvent, mix nanocellulose, modified starch and reinforcing agent uniformly to form the first solution, and then slowly add the plasticizer to the first solution under stirring solution, mix evenly to form the second solution, the second solution is the film-forming solution; step C: apply the film-forming solution on the film-forming machine, the film-forming machine speed is 0.2-0.8m / s, and the film-forming temperature is 40 ~95°C, film-forming time is 20-30min; this document mixes nanocellulose-forming sol with modified starch. The film prepared by this method is a conventional method, and its mechanical properties are poor, and it does not contain antibacterial ingredients.

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