Preparation method of safe and pure-natural film forming material used in fresh-keeping of cold fresh pork
A film-forming material and a purely natural technology, applied in the direction of preserving meat/fish with a coating protective layer, can solve the problems affecting the promotion and sales of chilled meat, achieve obvious fresh-keeping effect and improve the effect of refrigeration time
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[0022] A preparation method of a safe pure natural cold-fresh pork fresh-keeping film-forming material comprises the following steps:
[0023] Take 50g of soybean protein isolate and add it into 1000ml of distilled water, heat and stir at 50°C, add 30ml of glycerin while stirring, stir evenly, then add ferulic acid at 0.5mmol / 100ml, the addition amount is 0.97075g, to obtain film-forming solution A; 0.1mol / L sodium hydroxide (NaOH) adjusts the pH value of film-forming solution A to 7.8, stirs and reacts in a water bath at 85°C for 30 minutes, and obtains a coating agent; divides the coating agent into four parts; one part is coated with a film Tea polyphenols were not added to the coating agent, and tea polyphenols were added to the other three film-coating agents according to the mass percentage of 0.1%, 0.2%, and 0.3% of the coating agent, and stirred for 0.5h to mix evenly to obtain the control film-forming materials respectively. 、A 1 Membrane material, A 2 Composition o...
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