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Edible sweet film and preparation method thereof

A sweet and edible technology, applied in the field of edible sweet film and its preparation, can solve problems such as toxicity, achieve good gas and moisture resistance, and improve the shelf life of food

Active Publication Date: 2017-04-19
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these commonly used chemical cross-linking agents have certain toxicity

Method used

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  • Edible sweet film and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The preparation method of genipin cross-linked chitosan and whey protein edible sweet film includes the following steps:

[0031] (1) Weigh 1g of chitosan and dissolve it in 100ml of acetic acid solution with a mass concentration of 2% to obtain a chitosan solution with a mass fraction of 1%;

[0032] (2) Add lecithin with a mass fraction of 1% to the solution in step (1), and stir for 30 minutes;

[0033] (3) Dissolve a certain quality of concentrated whey protein in distilled water to prepare a 2% aqueous solution. After heating to 80℃~100℃ in a water bath, stir and modify for 30 minutes. After modification, use a water bath at 45℃ to prepare whey. Protein solution, spare;

[0034] (4) Slowly inject the whey protein solution prepared in step (3) into the solution prepared in step (2) under stirring;

[0035] (5) Adjust pH to 3.5-5.5 with 1mol / L glacial acetic acid, add 0.2g glycerol / g whey protein, 0.5% xylitol and a final concentration of 0.1% genipin solution to prepare an e...

Embodiment 2

[0045] The preparation method of genipin cross-linked chitosan and whey protein edible sweet film includes the following steps:

[0046] (1) Weigh 1g of chitosan and dissolve in 100ml of acetic acid solution with a mass concentration of 1.5% to obtain a chitosan solution with a mass fraction of 0.5%;

[0047] (2) Add lecithin with a mass fraction of 1% to the solution in step (1), and stir for 30 minutes;

[0048] (3) Dissolve a certain quality of concentrated whey protein in distilled water to prepare a 1% aqueous solution, heat the water bath to 80℃~100℃, stir and modify for 30min, after modification, 45℃ water bath for use to prepare whey Protein solution, spare;

[0049] (4) Slowly inject the whey protein solution prepared in step (3) into the solution prepared in step (2) under stirring;

[0050] (5) Adjust the pH to 3.5-5.5 with 1mol / L glacial acetic acid, add 0.2g glycerol / g whey protein, 0.5% xylitol solution and 0.5% genipin solution to prepare an edible sweet film liquid;

[0...

Embodiment 3

[0054] The preparation method of genipin cross-linked chitosan and whey protein edible sweet film includes the following steps:

[0055] (1) Weigh 1g of chitosan and dissolve it in 100ml of acetic acid solution with a mass concentration of 3% to obtain a chitosan solution with a mass fraction of 1.5%;

[0056] (2) Add 2% monoglyceride to the solution in step (1), and stir for 30 min;

[0057] (3) Dissolve a certain quality of concentrated whey protein in distilled water to prepare a 2% aqueous solution. After heating in a water bath to 80℃~100℃, stir and modify for 20 minutes. After modification, use a water bath at 45℃ to prepare whey. Protein solution, spare;

[0058] (4) Slowly inject the whey protein solution prepared in step (3) into the solution prepared in step (2) under stirring;

[0059] (5) Adjust the pH to 3.5-5.5 with 1mol / L glacial acetic acid, add 0.4g glycerol / g whey protein, 1% xylitol and 0.3% genipin solution to prepare an edible sweet film liquid;

[0060] (6) Place t...

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Abstract

The invention discloses an edible sweet film and a preparation method thereof and belongs to the technical field of food packaging and protective materials. According to the preparation method, chitosan and whey protein are used as film forming base materials, xylooligosaccharide is used as a sweetener and genipin is used as a crosslinker. A film forming liquid of the edible sweet film contains the chitosan and whey protein. In the invention, the chitosan and the whey protein are compounded creatively with addition of the crosslinker, so that the film remains the nutrients in the whey protein. The film has good insulation property, mechanical performance and long-acting antibacterial performance. The raw materials of the edible sweet film are all edible, wherein a chitosan acetic acid solution has a sour taste while the xylooligosaccharide enable the film to have a sweet taste, thereby forming the edible sweet film. The method is simple in operations and low in cost, and has a wide application prospect in food industry.

Description

Technical field [0001] The invention belongs to the technical field of food packaging and insurance materials, and relates to an edible sweet film and a preparation method thereof. Background technique [0002] With the safety of food itself and the environmental problems brought about by its packaging, people are paying more and more attention to it. Edible film has become a Research hotspots in the field of food packaging. Edible film is a kind of natural edible substance (such as protein, polysaccharide, lipid) as raw material, which covers the surface of food in the form of packaging or coating, controls the penetration of water, oxygen and various solutes, and plays a protective role. film. [0003] Dairy products are rich in nutrition. Whey protein is a general term for various protein components in whey. It usually refers to whey protein from bovine milk. Whey protein in bovine milk accounts for about 20% of the total protein content. It is composed of β-lactoglobul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J3/24C08L89/00C08L5/08C08K5/053C08K5/1545B65D65/46
Inventor 薛海燕贺宝元仇旭东宋宏新李媛
Owner SHAANXI UNIV OF SCI & TECH
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