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Method for preparing antibacterial and antioxidant composite film by using scale

An anti-oxidation and composite film technology, which is applied in the field of food processing, can solve the problems of polluting the environment and wasting biological resources, and achieve the effects of reducing pollution, preventing food lipid peroxidation, and extending shelf life

Inactive Publication Date: 2015-10-14
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Fish scales account for about 2.5% of fish body weight, and most of them are discarded during processing, which not only pollutes the environment, but also wastes biological resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] (1) Preparation of fish scale gelatin: fish scales were dried and crushed, and large yellow croaker ( Pseudosciaena croce ) fish scales were added to 3% HCl solution, soaked ultrasonically at room temperature for 5 h, decalcified; after treatment, the fish scales were washed to pH 7.0, fully drained, and 4% NaOH was added to the decalcified fish scales according to the ratio of solid to liquid: 1 g: 25 mL After ultrasonic soaking for 10 h, the non-collagenous protein was removed; after the treated fish scales were washed to pH 7.0, distilled water was added to the fish scales according to the ratio of solid to liquid 1 g: 10 mL, extracted at 78 °C for 10 h, filtered, and the filtrate was concentrated in vacuo. Vacuum dried at 70°C to obtain fish scale gelatin.

[0022] (2) Preparation of tea polyphenol-Zn antibacterial agent: Tea polyphenols were added to double distilled water according to the ratio of solid to liquid 1 g : 4 mL, the pH of the solution was adjusted to ...

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PUM

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Abstract

The present invention discloses a method for preparing an antibacterial and antioxidant composite film by using scale. According to the method, scale gelatin is adopted as a substrate, a tea polyphenol-Zn complex is adopted as an antibacterial agent, the slow antibacterial agent release purpose is achieved by using cyclodextrin, and scale gelatin preparing, tea polyphenol-Zn complex synthesis, dissolution, homogenization , degassing, scraping to form film, drying and other steps are performed to prepare the antibacterial and antioxidant composite film.

Description

technical field [0001] The invention belongs to the field of food processing and relates to a production method of a packaging film, in particular to a method for preparing an antibacterial and anti-oxidation composite film by using fish scales. Background technique [0002] In recent years, as the environmental problems caused by plastic packaging materials have become increasingly prominent, people are increasingly eager to find an environmentally friendly product to replace plastic packaging materials, and biofilm has become a research hotspot in the field of food packaging due to its outstanding characteristics. As a new type of packaging material, biofilm has the advantages of environmental protection, biodegradation, non-toxic and harmless, and can improve the quality of food. At the same time, in the process of biofilm production, antibacterial agents, antioxidants, pigments, flavor substances, nutrients Enhancers, spices and other substances give it more functions. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08L5/16C08K5/053C08K5/1545C08J5/18
Inventor 杨立业曲有乐徐银峰王斌陈荫孙坤来
Owner ZHEJIANG OCEAN UNIV