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Preparation method and application of lactobionic acid composite film coating preservative

A film-coating preservative, lactobionic acid technology, applied in application, food ingredients as a coating agent, preservation of meat/fish with a protective layer, etc., can solve the toxicity of chemical preservatives, the damage to the quality and nutritional value of cold meat and other problems, to achieve the effect of reducing water loss, simple production, and inhibiting Gram-negative bacteria

Inactive Publication Date: 2018-06-15
SHENYANG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The meat industry mostly adopts thermal processing, freezing and adding preservatives to keep fresh, but thermal processing and freezing technologies cause certain damage to the quality and nutritional value of chilled fresh meat, and chemical preservatives are potentially toxic to the human body, so research And the development of green and environmentally friendly fresh-keeping materials and methods has become the focus of scholars' research.

Method used

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  • Preparation method and application of lactobionic acid composite film coating preservative
  • Preparation method and application of lactobionic acid composite film coating preservative
  • Preparation method and application of lactobionic acid composite film coating preservative

Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of a lactobionic acid composite coating preservative, the method is specifically carried out according to the following steps:

[0021] S1. At room temperature, weigh 2.5g of chitosan and add it to 150mL of distilled water and stir thoroughly. While stirring, add 2.5mL of glacial acetic acid dropwise. Stir in a water bath for 60 minutes until the solution is clear, and after the stirring is completed, leave it at room temperature for 30 minutes to form a chitosan film liquid;

[0022] S2. At room temperature, weigh 2.5g of gelatin and add it to 150mL of distilled water to fully stir. After the stirring is completed, distill it to 250mL with distilled water, then place it in a water bath at 55°C and stir until it is completely dissolved to form a gelatin film;

[0023] S3, the chitosan film solution obtained by S1 and the gelatin film solution obtained by S2 are blended in a volume ratio of 1:1 to obtain a transparent chitosan and gelatin blend;

[...

Embodiment 2

[0030] A preparation method of a lactobionic acid composite coating preservative, the method is specifically carried out according to the following steps:

[0031] S1. At room temperature, weigh 3.75g of chitosan and add it to 150mL of distilled water to fully stir. While stirring, add 2.5mL of glacial acetic acid dropwise. Stir in a water bath at ℃ for 60 minutes until the solution is clear, and after the stirring is completed, let it stand at room temperature for 30 minutes to form a chitosan film solution;

[0032] S2. At room temperature, weigh 3.75g of gelatin and add it to 150mL of distilled water to fully stir. After the stirring is completed, distill it to 250mL with distilled water, then place it in a water bath at 55°C and stir until it is completely dissolved to form a gelatin film;

[0033] S3, the chitosan film solution obtained by S1 and the gelatin film solution obtained by S2 are blended in a volume ratio of 1:1 to obtain a transparent chitosan and gelatin blen...

Embodiment 3

[0040] A preparation method of a lactobionic acid composite coating preservative, the method is specifically carried out according to the following steps:

[0041] S1. At room temperature, weigh 3.75g of chitosan and add it to 150mL of distilled water to fully stir. While stirring, add 2.5mL of glacial acetic acid dropwise. Stir in a water bath at ℃ for 60 minutes until the solution is clear, and after the stirring is completed, let it stand at room temperature for 30 minutes to form a chitosan film solution;

[0042] S2. At room temperature, weigh 3.75g of gelatin and add it to 150mL of distilled water to fully stir. After the stirring is completed, distill it to 250mL with distilled water, then place it in a water bath at 55°C and stir until it is completely dissolved to form a gelatin film;

[0043] S3, the chitosan film solution obtained by S1 and the gelatin film solution obtained by S2 are blended in a volume ratio of 1:1 to obtain a transparent chitosan and gelatin blend;...

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Abstract

The invention discloses a preparation method and application of a lactobionic acid composite film coating preservative. The preparation method comprises the following steps: firstly, preparing the lactobionic acid composite film coating preservative, and then applying the lactobionic acid composite film coating preservative to preservation of chilled fresh meat. The preparation method of the lactobionic acid composite film coating preservative is simple, convenient and easy to popularize, and the composite film liquid prepared by the method is edible, green and environment-friendly and can replace a traditional chemical preservation method. The lactobionic acid composite film coating preservative is applied to preservation of chilled fresh meat; after the chilled fresh meat is soaked in the composite preservative, surface moisture loss, microbial breeding, fat oxidation and increase of volatile salt based nitrogen number of the chilled fresh meat can be decelerated; and the composite preservative also has a certain color protection effect, maintains the specific flavor of the chilled fresh meat and prolongs the shelf life of the chilled fresh meat.

Description

technical field [0001] The invention belongs to the technical field of preservative preparation and application, and relates to a preparation method and application of a lactobionic acid composite coating preservative. Background technique [0002] The meat industry mostly adopts thermal processing, freezing and adding preservatives to keep fresh, but thermal processing and freezing technologies cause certain damage to the quality and nutritional value of chilled fresh meat, and chemical preservatives are potentially toxic to the human body, so research And the development of green and environmentally friendly fresh-keeping materials and methods has become the focus of scholars' research. Edible film is an anti-corrosion and fresh-keeping technology developed in recent years that can effectively reduce the loss of cold fresh meat juice and control microbial contamination. Edible films combined with natural preservatives can not only effectively enhance the antibacterial eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B4/10
CPCA23B4/10A23V2002/00A23V2200/02A23V2200/10A23V2200/048A23V2200/22A23V2250/511A23V2250/022A23V2250/5432A23V2250/02
Inventor 郑艳高立红岳喜庆
Owner SHENYANG AGRI UNIV
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