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Edible packaging membrane as well as preparation method and application thereof

A packaging film, edible technology, applied in the field of edible packaging film, can solve problems such as waste, and achieve the effects of increasing added value, food preservation shelf life, and strengthening antibacterial and antioxidant properties

Inactive Publication Date: 2017-12-15
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Fish scales are materials rich in natural protein, mainly collagen and keratin, accounting for about 50-70% of the total weight of fish scales, but due to neglect, a lot of waste is caused

Method used

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  • Edible packaging membrane as well as preparation method and application thereof
  • Edible packaging membrane as well as preparation method and application thereof
  • Edible packaging membrane as well as preparation method and application thereof

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Embodiment

[0032] A preparation method of an edible packaging film, comprising the following steps:

[0033] ①Preparation of plant extracts: take galangal, spring amomum and yizhiren, dry and pulverize them respectively, add 80% (volume percentage) ethanol solution to soak for more than 3 hours, and then ultrasonically extract several times, each time for more than 2 hours; then The extract is centrifuged (3000r / min for 10min), and the supernatant is taken. The supernatant is extracted with petroleum ether to remove fat and pigment, and then concentrated to the extract under reduced pressure; after the extract is dissolved in 5% (volume percentage) ethanol solution Go up the macroporous resin column, first use more than 3BV (column volume; the same below) to elute and remove impurities, then elute with more than 4BV of 80% (volume percentage) ethanol solution, collect the eluate and concentrate under reduced pressure to obtain three extracts, namely galangal extract, spring Amomum extrac...

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Abstract

The invention discloses an edible packaging membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: respectively soaking galangal, fructus amomi and bitter cardamom with an ethanol solution respectively, performing leach liquor centrifugation, concentrating so as to obtain an extract, performing macroporous resin column elution, concentrating an eluant to obtain extracts, namely a galangal extract, a fructus amomi extract and a bitter cardamom extract; performing ultrasonic decomposition decalcification by using fish scales with an EDTA (Ethylene Diamine Tetraacetic Acid) solution, adding an acetic acid solution and pepsase, performing enzymolysis, and performing spray-drying so as to obtain fish scale collagen powder; mixing the mixture of the galangal extract, the fructus amomi extract and the bitter cardamom extract with the collagen powder, adding glycerinum and chitosan, performing water bath, performing ultrasonic degassing, pouring onto a glass frame, baking, a peeling off, thereby obtaining the edible packaging membrane. Due to adoption of the galangal extract, the fructus amomi extract and the bitter cardamom extract, the antibacterial property and the oxidation resistance of the edible packaging membrane disclosed by the invention are improved, and effects of food preservation and shelf life prolonging are achieved.

Description

technical field [0001] The invention relates to an edible packaging film, a preparation method thereof and an application in food packaging. Background technique [0002] Collagen is a white, opaque, unbranched fibrous protein with natural low toxicity, biodegradability, low immune activity, moisture retention and nutrition, and is widely used in food industry, cosmetics, biomedical materials, etc. field. Collagen molecules have a unique triple helical structure, which can form fiber bundles with high tensile strength. Therefore, the edible film prepared by collagen not only has excellent film mechanical properties, but also oil resistance, oxygen resistance, water resistance and freshness preservation. , fragrance and other functions, but also has a high nutritional value. [0003] Fish scales are materials rich in natural protein, mainly collagen and keratin, which account for about 50% to 70% of the total weight of fish scales, but cause a lot of waste because they are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08L5/08C08K5/00C08K5/053C08J5/18B65D65/46
CPCB65D65/463B65D65/466C08J5/18C08J2389/00C08J2405/08C08L89/00C08L2201/06C08L2201/08C08L2203/16C08L5/08C08K5/0058C08K5/005C08K5/053
Inventor 黄儒强高林林王静辉王倩
Owner SOUTH CHINA NORMAL UNIVERSITY
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