Antioxidation collagen active membrane containing plant extract and preparation method for antioxidation collagen active membrane

A plant extract and collagen technology, applied in the field of edible film blending modification, to achieve the effect of eliminating harmful free radicals

Inactive Publication Date: 2012-08-15
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there is no report to prepare antioxidant fi

Method used

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  • Antioxidation collagen active membrane containing plant extract and preparation method for antioxidation collagen active membrane

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (1) Weigh 3g of fish skin collagen and dissolve it with 30ml of distilled water under stirring at 45°C to prepare a collagen aqueous solution.

[0029] (2) Weigh 1mg of grape seed extract (ginger extract, ginkgo leaf extract, green tea extract), dissolve it with 70ml distilled water at room temperature ultrasonically, filter with filter paper, and keep the filtrate at -20°C for use. (The extract is directly purchased from Ningbo Chinese Medicine Pharmaceutical Co., Ltd., and is an aqueous extract)

[0030] (3) Add 70 ml of the extract aqueous solution to 30 ml of the collagen aqueous solution, add 0.9 g of glycerin as a plasticizer, stir evenly, ultrasonically degas for 1 hour, and keep at 45°C. Pipette 20ml of casting solution each time and spread it on a 120mm×80mm×4mm plexiglass plate to form a film at a temperature of 20℃ and a film-forming time of 36h. Then, peel off the plexiglass plate to obtain antioxidant collagen Protein active membrane.

[0031] (4) Antioxidant te...

Embodiment 2

[0034] (1) Weigh 3g of collagen and stir and dissolve it with 30ml of distilled water at 45°C to prepare a collagen aqueous solution.

[0035] (2) Weigh 100 mg of grape seed extract (ginger extract, ginkgo leaf extract, green tea extract), dissolve it with 70 ml of distilled water at room temperature by ultrasonic, filter with filter paper, and keep the filtrate at -20°C for use.

[0036] (3) Add 70 ml of the extract aqueous solution to 30 ml of the collagen aqueous solution, add 0.9 g of glycerin as a plasticizer, stir evenly, ultrasonically degas for 1 hour, and keep at 45°C. Pipette 20ml of casting solution each time and spread it on a 120mm×80mm×4mm plexiglass plate to form a film at a temperature of 25℃ and a film-forming time of 38h. Then, peel off the plexiglass plate to obtain antioxidant collagen Protein active membrane.

[0037] (4) Antioxidant test: The DPPH free radical scavenging ability of collagen membrane containing various extracts was measured, such as figure...

Embodiment 3

[0039] (1) Weigh 3g of fish skin collagen and stir and dissolve it with 30ml of distilled water at 45°C to prepare a collagen aqueous solution.

[0040] (2) Weigh 500mg of grape seed extract (ginger extract, ginkgo leaf extract, green tea extract), dissolve it with 70ml of distilled water at room temperature ultrasonically, filter with filter paper, and keep the filtrate at -20°C for use.

[0041] (3) Add 70 ml of the extract aqueous solution to 30 ml of fish skin collagen aqueous solution, add 0.9 g of glycerin as a plasticizer, stir evenly, ultrasonically degas for 1 hour, and keep warm at 45°C. Pipette 20ml of casting solution each time and spread it on a 120mm×80mm×4mm plexiglass plate to form a film at a temperature of 30℃ and a film forming time of 40h. Then, peel off the plexiglass plate to obtain antioxidant collagen Protein active membrane.

[0042] (4) Antioxidant test: The DPPH free radical scavenging ability of collagen membrane containing various extracts was measured, ...

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Abstract

The invention relates to a preparation method for an antioxidation collagen active membrane containing a plant extract, and belongs to the field of edible membrane blending modification. The antioxidation collagen active membrane contains a plant extract, collagen and glycerol. The preparation method comprises the following steps of: dissolving the collagen and the glycerol into distilled water to prepare a collagen aqueous solution according to proportion; adding the plant extract into the distilled water to prepare a solution; adding a certain amount of the solution into the collagen aqueous solution, uniformly stirring, and performing ultrasonic degassing; and weighing and paving on an organic glass plate, and drying to prepare the membrane. Compared with a pure collagen membrane, the prepared active protein membrane has the advantages that the antioxidation performance is improved obviously due to adding of the extract, and effects of high ultraviolet resistance and certain antibacterial performance are achieved; and moreover, the protein membrane has high mechanical strength and moisture and gas resistance and is degradable, so that effects of protecting foods and reducing environmental pollution are achieved.

Description

technical field [0001] The invention specifically relates to an antioxidant collagen active film containing plant extracts and a preparation method thereof, and belongs to the field of blending modification of edible films. Background technique [0002] With the development of science and technology and the improvement of people's living standards, people pay more and more attention to environmental issues, and the requirements for product quality, packaging and disposal of waste packaging are becoming stricter and stricter. In this case, "edible packaging "It came into being. Functional edible food packaging films made of natural biomaterials have become a research hotspot in the field of food packaging. Functional packaging films can add some active ingredients to improve the film's antioxidant properties, antibacterial properties or nutritional value. According to data, oxidation is one of the main causes of food spoilage, and the addition of antioxidants to prepare pa...

Claims

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Application Information

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IPC IPC(8): B65D65/46
Inventor 张其清李建华苗静陈善飞伍久林
Owner FUZHOU UNIV
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