Application of bacterial cellulose-tea polyphenol composite film in food fresh keeping

A technology for bacterial cellulose and food preservation, applied in microorganism-based methods, transportation and packaging, packaging, etc., can solve the problems of plasticizer dissolution environment, pollution, short product shelf life, etc.

Active Publication Date: 2017-05-10
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The packaging of cold fresh meat is usually only covered with plastic film on the surface of the tray. This method not only shortens the shelf life of the product, but also has problems such as plasticizer dissolution and environmental pollution.

Method used

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  • Application of bacterial cellulose-tea polyphenol composite film in food fresh keeping
  • Application of bacterial cellulose-tea polyphenol composite film in food fresh keeping
  • Application of bacterial cellulose-tea polyphenol composite film in food fresh keeping

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Embodiment Construction

[0013] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but it is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be covered by the present invention. within the scope of protection.

[0014] 1. Preparation of bacterial cellulose hydrogel

[0015] The cryopreserved Acetobacter xylinum was inoculated on a new slant solid medium, and incubated at a constant temperature of 30°C for 24h. Pick the new colonies grown on the slope and inoculate them into the liquid seed medium, and cultivate them statically at a constant temperature for 12 hours, then insert them into the fermentation medium with an inoculum amount of 4%, and culture them statically at a constant temperature of 30° C. for one week.

[0016] 2. Purification and treatment of ...

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Abstract

An application of bacterial cellulose-tea polyphenol composite film in food fresh keeping is disclosed. The application is characterized in that acetobacter xylinus is adopted as a bacterial strain, inoculated to a medium and cultured for a certain period of time to obtain bacterial cellulose hydrogel, and the hydrogel is subjected to purification and treatment, then soaked in a tea polyphenol solution having a certain concentration, and dried to obtain the composite film. The bacterial cellulose has characteristics of degradability, no toxicity, no harm, good film forming performance, and the like, the bacterial cellulose is composited with the tea polyphenols which are a natural bacterial depressant and which have wide-spectrum bactericidal effects to form the film, and package film having antibacterial functions is prepared and applied to fresh keeping of chilled meat so as to meet market demands.

Description

technical field [0001] The invention relates to the application of a bacterial cellulose-tea polyphenol composite film in food preservation, and belongs to the field of food packaging film processing. Background technique [0002] Food packaging is an important part of food commodities. It can ensure that food is free from external factors during processing, transportation and sales, maintain the original quality of food, and ensure its economic value. At present, plastic products are the most widely used in the field of food packaging. It has problems such as environmental pollution, energy consumption, and toxicity to the human body, and has been widely valued by people. Therefore, researching a non-toxic, harmless and antibacterial active packaging to replace the original plastic packaging has become the main development direction of future research. In this experiment, according to the characteristics of bacterial cellulose, which is degradable, non-toxic and harmless, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J3/075C08L1/02C08K5/00C08K5/053C12P19/04B65D65/46C12R1/01
CPCB65D65/466C08J3/075C08J5/18C08J2301/02C08K5/00C08K5/053C08L2201/06C08L2203/16C12P19/04C08L1/02
Inventor 夏秀芳潘男邓思阳王博孔保华
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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