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: 2019-10-11
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
  • Edible sweet film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0031] (1) taking 1g chitosan and being dissolved in 100ml mass concentration is in the acetic acid solution of 2%, obtains the chitosan solution that mass fraction is 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, heat it in a water bath to 80°C to 100°C, stir and modify it for 30 minutes, and after modification, use a water bath at 45°C for standby 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) Regulate pH with 1mol / L glacial acetic acid to be 3.5-5.5, add 0.2g glycerol / g whey protein, 0.5% xylitol and final concentration be 0.1...

Embodiment 2

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

[0046] (1) taking by weighing 1g chitosan and being dissolved in 100ml mass concentration is the acetic acid solution of 1.5%, obtains the chitosan solution that mass fraction is 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 it in a water bath to 80°C to 100°C, stir and modify it for 30 minutes, and after modification, use a water bath at 45°C for standby to obtain 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) Use 1mol / L glacial acetic acid to adjust the pH to 3.5-5.5, add 0.2g glycerol / g whey protein, 0.5% xylitol solution and 0.5%...

Embodiment 3

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

[0055] (1) taking by weighing 1g chitosan and being dissolved in 100ml mass concentration is in the acetic acid solution of 3%, obtains the chitosan solution that mass fraction is 1.5%;

[0056] (2) Add a mass fraction of 2% monoglyceride to the solution in step (1), and stir for 30 minutes;

[0057] (3) Dissolve a certain quality of concentrated whey protein in distilled water to prepare a 2% aqueous solution, heat it in a water bath to 80°C to 100°C, stir and modify it for 20 minutes, and after modification, use a water bath at 45°C for standby 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) Use 1mol / L glacial acetic acid to adjust the pH to 3.5-5.5, add 0.4g glycerol / g whey protein, 1% xylitol and 0.3% genipin ...

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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 Patents(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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