Preparation method and application of edible antibacterial film solution containing polymer iron chelating agent

Abstract

The invention discloses a preparation method of an edible antimicrobial membrane solution containing a polymer ferric chelating agent. The preparation method comprises the following steps: taking a polymer ferric chelating agent and dissolving it with ultrapure water to prepare a polymer ferric chelating agent solution with its concentration being 20mg / mL; preparing a zein solution from 5g of zein, 40mL of ethanol with its volume concentration being 95% and 2mL of glycerin; adding the polymer ferric chelating agent solution into the zein solution until content of the polymer ferric chelating agent in a membrane solution obtained is 0.1-4mg / mL. Thus, the edible antimicrobial membrane solution containing the polymer ferric chelating agent is obtained. The edible antimicrobial membrane solution can be used in food preservation.

Description

technical field [0001] The invention belongs to the field of food preservation materials, and relates to an edible antibacterial coating film containing a polymer iron chelating agent and an application thereof. Background technique [0002] Metal chelating agent is through the strong binding effect with metal ions, including metal ions inside to become a chelate, so as to achieve the purpose of preventing metal ions from functioning or reducing the content of metal ions. With the deepening of people's research on chelating agents, it is found that chelating agents can be used in many fields of the food industry as stabilizers, preservatives, acidity regulators, antioxidants, defoamers, moisture retention agents, and nutritional enhancers; In recent years, relevant studies have shown that metal chelating agents exhibit good antibacterial activity in vitro, so it is expected to expand their application in the field of food preservation. Polymeric chelating agents are difficu...

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Problems solved by technology

[0005] At present, chelating agents have been widely used in many fields of the food industry, but the application research in food preservation is still relatively small; in recent years, the research on antibacterial coatings or films at home and abroad is increasing day by day, and there are foreign literature reports that small molecules chelate The mixture of ethylenediaminetetraacetic acid (EDTA) is added to zein, but the edible antibacterial coating technology containing polymer iron chelating agent and the freshness preservation of fish balls have not been reported yet.

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