Peanut protein isolate and chitosan compounded fruit and vegetable packaging film

Abstract

The invention discloses a peanut protein isolate and chitosan compounded fruit and vegetable packaging film, and relates to the technical field of fruit and vegetable packaging films. The peanut protein isolate and chitosan compounded fruit and vegetable packaging film is prepared from raw materials in parts by mass as follows: 60-80 parts of peanut protein isolate, 40-50 parts of chitosan, 20-25 parts of sodium carboxymethyl cellulose, 15-20 parts of polyvinyl alcohol, 10-15 parts of propolis, 10-12 parts of sodium alginate, 10-12 parts of nano calcium carbonate, 8-10 parts of calcium citrate, 8-10 parts of fumed silica, 6-9 parts of agar, 5-8 parts of tea polyphenol, 5-8 parts of epoxidized soybean oil, 3-5 parts of genipin, 3-5 parts of polyglycerol fatty acid ester, 2-3 parts of plant essential oil and 800-1,000 parts of water. Peanut protein isolate and chitosan are taken as main raw materials and supplemented by a suitable auxiliary, so that the prepared packaging film has higher physical and mechanical property, selecting permeability and antioxidation; the selected raw materials are easy to degrade, so that the ecological environment is protected.

Description

Technical field: [0001] The invention relates to the technical field of fruit and vegetable packaging films, in particular to a peanut protein isolate-chitosan composite fruit and vegetable packaging film. Background technique: [0002] Plastic film packaging is currently the most widely used packaging material for fresh fruit and vegetable production. It is transparent, so you can clearly see the condition of the packaged products; it has moisturizing properties, which can reduce the moisture loss of products and increase the freshness; It is airtight to protect the product from contamination. [0003] At present, the fruit and vegetable packaging films used in China are generally based on polymers such as polyethylene, polypropylene, and polyvinyl chloride, and are made by adding some plasticizers, inorganic fillers, and antibacterial agents. On the one hand, these packaging films have the disadvantage of being difficult to degrade or take a long time to degrade, which i...

AI Technical Summary

Problems solved by technology

On the one hand, these packaging films have the disadvantage of being difficult to degrade or take a long time to degrade, which is easy to cause white pollution and affect the environment; on the other hand, these packaging films have poor air permeability. If the oxygen concentration in the packaging film is too low or If the concentration of carbon dioxide is too high, the fruit will undergo anaerobic respiration, resulting in the accumulation of volatile substances such as ethanol and acetaldehyde, resulting in peculiar smell and smell, and reducing the flavor quality of the fruit