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Edible fish skin collagen antibacterial film containing thyme essential oil

A fish skin collagen and essential oil technology, applied in animal/human protein, organic chemistry, flexible coverings, etc., to achieve good antibacterial activity, prolong fresh-keeping period, and prolong shelf life

Inactive Publication Date: 2013-10-02
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic antibacterial agents have the advantages of good heat resistance, wide antibacterial range, and no drug resistance. Synthetic antibacterial agents mainly have fast sterilization speed and good antifungal effect. However, both inorganic antibacterial agents and synthetic antibacterial agents have food safety problems. However, natural antibacterial agents have good biocompatibility and environmental performance, are less toxic, and do not have food safety hazards; therefore, the development and application of natural antibacterial agents has received more and more attention.

Method used

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  • Edible fish skin collagen antibacterial film containing thyme essential oil
  • Edible fish skin collagen antibacterial film containing thyme essential oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 1.2 g of collagen and dissolve it with 15 ml of distilled water in a stirring water bath at 45°C to make a collagen aqueous solution; homogeneously dissolve 0.6 ml of thyme essential oil in 15 ml of distilled water containing 0.075 g of soybean lecithin to make thyme essential oil solution, and then mix the two, add 0.3 g glycerin as a plasticizer, stir evenly, degas by ultrasonication for 30 min, and keep warm at 45 °C. Pipette 10 ml of casting solution each time and spread it on a plexiglass frame of 120 mm×80 mm×2 mm to form a film. Peel off the frame to obtain the collagen antibacterial film. The antibacterial activity of the membrane was measured by the filter paper method, and the membrane was cut into a circle of 12 mm to investigate the antibacterial effect of the antibacterial membrane on Escherichia coli and Staphylococcus aureus.

Embodiment 2

[0019] Weigh 1.2 g of collagen and dissolve it with 15 ml of distilled water in a stirring water bath at 45°C to make a collagen aqueous solution; homogeneously dissolve 1.2 ml of thyme essential oil in 15 ml of distilled water containing 0.075 g of soybean lecithin to make thyme essential oil solution, and then mix the two solutions, add 0.3 g glycerin as a plasticizer, stir evenly, degas by ultrasonication for 30 min, and keep warm at 45°C. Pipette 10 ml of casting solution each time and spread it on a plexiglass frame of 120 mm×80 mm×2 mm to form a film. Peel off the frame to obtain the collagen antibacterial film. The antibacterial activity of the membrane was measured by the filter paper method, and the membrane was cut into a circle of 12 mm to investigate the antibacterial effect of the antibacterial membrane on Escherichia coli and Staphylococcus aureus.

[0020] Table 1 The inhibition zones of the antibacterial films prepared under different conditions

[0021]

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Abstract

The invention discloses an edible fish skin collagen antibacterial film containing thyme essential oil and a preparation method thereof. The edible fish skin collagen antibacterial film comprises the following components by weight percent: 4 percent of fish skin collagen, 4 percent of thyme essential oil, 0.25 percent of soya bean lecithin, 1 percent of glycerinum and the balance of distilled water. The preparation method comprises the following steps of: firstly dissolving the fish skin collagen powder into the distilled water to prepare the fish skin collagen solution, then dissolving the thyme essential oil into the distilled water of the soya bean lecithin to prepare the thyme essential oil solution, mixing the fish skin collagen solution and the thyme essential oil solution, adding glycerinum to be used as a plasticizer, uniformly mixing, standing the mixture, degassing, and moving and paving the mixture onto an organic glass frame to be dried and formed into a film. The collagen antibacterial film has good antibacterial performance, can be degraded by organisms, is free from polluting the environment and can inhibit the growth of microorganism on the surface of food so as to keep the freshness of the food and prolong the shelf life.

Description

technical field [0001] The invention belongs to the application technical field of antibacterial packaging films, and in particular relates to an edible fish skin collagen antibacterial film containing thyme essential oil and a preparation method thereof. Background technique [0002] In recent years, with the enhancement of environmental awareness, people pay more and more attention to the environmental pollution and food safety problems caused by plastic packaging materials, and have higher requirements for food packaging materials. Therefore, edible packaging films prepared from natural biological materials have received great attention. Edible film refers to a dense film with a porous network structure formed by the interaction of different molecules using natural edible substances (such as polysaccharides, proteins, lipids, etc.) as raw materials, which can be used for food packaging and fresh-keeping, etc. aspect. Some antibacterial agents can be added to the edible ...

Claims

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Application Information

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IPC IPC(8): C08L89/00C08K5/00C08K5/13C08K5/053C08J5/18B65D65/46C07K14/78C07K1/14
Inventor 张其清伍久林葛尚英刘辉
Owner FUZHOU UNIV
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