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
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[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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