Purpose of nano-composite film for antibacterial isolation packaging

A nano-composite and multi-purpose technology, applied in the field of nano-membranes, can solve the problems of wasting fishery resources and not being effectively utilized, and achieve the effects of inhibiting lipid peroxidation and the growth of pathogenic microorganisms, increasing added value, and reducing pollution

Inactive Publication Date: 2015-09-23
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the processing of tuna fillets, etc., a large amount of leftovers such as minced mea

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment

[0017] Embodiment: tuna myofibrillar protein-ZnO nanocomposite film, it contains 20~22 parts of myofibrillar protein, 0.16~0.24 part of ZnO, 0.6~1.1 part of enteromorpha antioxidant, 4~5.5 parts of plasticizer. The plasticizer is preferably sorbitol.

[0018] Preparation of tuna minced myofibrillar protein: Take minced tuna, add 0.05 mol / L Tris-Maleate buffer (pH 7.5) according to the ratio of solid to liquid 1 g: 10 mL, homogenize at 18000 r / min, centrifuge at 6000 r / min for 13 min, take the precipitate and Repeat the homogenization-centrifugation twice, the obtained precipitate was washed by adding 0.1 mol / L NaCl solution according to the solid-liquid ratio of 1 g:4 mL, and centrifuged at 9000 r / min for 15 min, and the obtained precipitate was again according to the solid-liquid ratio of 1 g:9 mL Add 0.1 mol / L NaCl solution to wash, filter with gauze, and centrifuge the filtrate to obtain a precipitate, which is the myofibrillar protein of tuna mince.

[0019] Preparat...

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PUM

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Abstract

The invention discloses a purpose of a nano-composite film for antibacterial isolation packaging. The nano-composite film comprises 20-22 weight parts of myofibrillar proteins, 0.16-0.24 weight part of ZnO, 0.6-1.1 weight parts of enteromorpha antioxidants, and 4-5.5 weight parts of plasticizers. A process comprises the preparation of tuna dogmeat myofibrillar proteins and the preparation of ZnO nanometer solution; then, the prepared myofibrillar proteins are dissolved in double distilled water; and ZnO nanometer particles, enteromorpha antioxidant agents and the plasticizers are added in sequence to prepare film forming solution; and finally, the successfully prepared film forming solution is poured on a polyvinyl chloride crystal plate for scraping, drying and film uncovering to prepare a myofibrillar protein-ZnO nano-composite film. Tuna dogmeat serves as a main raw material, so that a new path is developed for the high-value utilization of tuna processing leftovers; and the prepared composite film has such prominent characteristics as oxidation resistance and bacteria inhibition, and has better application prospect in the food packaging field.

Description

technical field [0001] The present invention relates to the use of nano film, in particular to the use of a nano composite film for antibacterial isolation packaging. Background technique [0002] Myofibrillar protein accounts for more than 50% of fish protein, and is the most biologically functional structural protein group in fish. Its structure, gel and rheological properties have an important impact on the quality of fish products. In recent years, the research on myofibrillar protein has found that it has good film-forming properties, which has laid a theoretical foundation for its application in the field of biofilm preparation. [0003] Tuna is an important pelagic commercial food fish with an annual catch of more than 6 million tons. During the processing of tuna and fish fillets, a large amount of leftovers such as minced meat are produced, which are not effectively utilized and precious fishery resources are wasted. [0004] Based on this, the applicant prepared ...

Claims

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Application Information

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IPC IPC(8): B65D65/38
Inventor 迟长凤王斌陈荫孙坤来
Owner ZHEJIANG OCEAN UNIV
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