Method for preparing novel ocean lysozyme antibiotic preservative coated film

A technology of lysozyme and antibacterial film, which is applied in the field of preparation of new marine lysozyme antibacterial and fresh-keeping coating film, can solve the problems of poor water vapor barrier ability, limited application, moisture migration hindrance, etc., achieve good shelf life, extend shelf life, The effect of elongation and moisture permeability coefficient increase

Inactive Publication Date: 2010-05-12
青岛华美加生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Polysaccharide edible film is made of starch and its derivatives, cellulose and its derivatives, alginate, carrageenan, chitosan and agar, etc., due to the special long-chain helical molecular structure of polysaccharides , its chemical properties are stable, suitable for long-term storage and various storage environments, it has good barrier properties to gas, and can form a uniform coating film on the surface of food, but they are all hydrophilic polymers, which are resistant to water vapor The barrier ability is poor, so it has limited resistance to moisture migration in food, which limits the application in high humidity food

Method used

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  • Method for preparing novel ocean lysozyme antibiotic preservative coated film
  • Method for preparing novel ocean lysozyme antibiotic preservative coated film
  • Method for preparing novel ocean lysozyme antibiotic preservative coated film

Examples

Experimental program
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Effect test

Embodiment 1

[0083] Dissolve 20 grams of sodium alginate in 976 grams of sterilized water at 50°C and stir at a constant temperature for 2 hours until a viscous liquid is formed, then add 4 grams of glycerin and mix well, then centrifuge at 4000r / min for 15 minutes at a high speed, and the centrifuged liquid is washed at 10°C / 30 Gradient cooling and thickening, the thickened solution is degassed under 0.1MPa vacuum for 1-2 hours to obtain a sodium alginate solution, wherein the concentration of sodium alginate is 20g / L, and the concentration of glycerol is 4g / L. Add 3 grams of marine lysozyme, 1.5 grams of tea polyphenols and 0.8 grams of potassium sorbate to the sodium alginate solution and fully mix to form an antibacterial film solution, then put the antibacterial film solution in 5% by mass CaCl 2 Gel into film in solution. The film is used in the preservation of tilapia fillets to prolong the shelf-life preservation period by about 5.5 days.

Embodiment 2-3

[0085] Embodiment 2-3 preparation step is identical with embodiment 1, is differently listed in the following table:

[0086]

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PUM

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Abstract

The invention relates to a method for preparing a novel ocean lysozyme antibiotic preservative coated film. The method is characterized by comprising the following steps of: preparing solution of sodium alginate by dissolving sodium alginate and glycerol in sterile water; adding a compound preservative formed by cean lysozyme, potassium sorbate and tea polyphenol in the solution of sodium alginate to prepare solution of antibiotic film; and colloidizing the solution of antibiotic film in 4 to 6 weight percent CaC12 solution to obtain the film. The method has the advantages of simple process, low cost, high performance-to-price ratio, good preservative effect, safety and wide application to freshness keeping of various aquatic products.

Description

technical field [0001] The invention relates to the field of fresh-keeping of aquatic products, in particular to a preparation method of a novel marine lysozyme antibacterial and fresh-keeping coating film (antibacterial film for short). Background technique [0002] Aquatic products are delicious and nutritious, but they are prone to spoilage during storage, processing, transportation and sales, thus reducing or losing their nutritional and edible value. According to statistics, about 20% of the world's aquatic products are lost to various corruptions every year, and the loss of aquatic products in my country is as high as 4 billion yuan per year, resulting in a great waste of resources. [0003] my country is a large fishery country. In the past ten years, the output of aquatic products has remained at about 20 million tons, accounting for about one-third of the world's total output of aquatic products. It has ranked first in the world for 10 consecutive years and has beco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B4/10A23B4/22A23B4/20
Inventor 王跃军王海婷王春波白兆中孙国强孙谧
Owner 青岛华美加生物科技有限公司
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