Aralia contunentalis Kitag root extract and chitosan composite film and preparation method thereof

Abstract

The invention relates to the technical field of milk beverages, and concretely relates to an Aralia contunentalis Kitag root extract and chitosan composite film. The composite film comprises an ethanol solution and, and further comprises 1.8% of chitosan, 2% of acetic acid, 0.75% of glycerol, 0.00-0.15% of Aralia contunentalis Kitag root extract, sodium hydroxide, glacial acetic acid, sodium nitrite and aluminum nitrate. According to the preparation method of the Aralia contunentalis Kitag root extract and chitosan composite film, the Aralia contunentalis Kitag root extract is used as a raw material, and the chitosan, glycerol and the like are added to prepare the natural edible composite film. The Aralia contunentalis Kitag root is rich in various active ingredients such as fatty acid, flavonoids, volatile oil and the like, so the obtained composite film has the effects of oxidation resistance, inflammation resistance, blood fat reduction, cardiovascular and cerebrovascular disease prevention, tumor resistance, nervous system protection and the like; and the chitosan has the characteristics of safety, good biocompatibility, biodegradability and the like and can be widely applied to fresh keeping of fruits and vegetables, and chitosan can inhibit the respiratory action of fruits and vegetables and delay the physiological metabolic activity of fruits.

Description

Technical field [0001] The invention relates to the technical field of fresh-keeping film, in particular to a Chitosan composite film of Aralia elata root extract and a preparation method thereof. Background technique [0002] The cling film of traditional packaging food is mostly plastic packaging products processed from polyethylene, polyvinyl chloride, etc., because it contains some harmful substances or plasticizers. In addition, these plastic products are mainly derived from petroleum and are not Degradability, large-scale use will cause resource waste and environmental pollution. In recent years, natural edible films prepared from natural polymer materials such as polysaccharides, starch and cellulose have been widely studied and applied. Chitosan is a new type of material used for food packaging and preservation on the market, and has good safety, Degradability and film-forming properties make it an ideal material for food packaging. However, its lack of antioxidant prop...

AI Technical Summary

Problems solved by technology

In order to achieve the above object, the present invention provides a "preparation method of chitosan composite film of Aralia changbai root extract", which solves the problem of weak wettability and air permeability, poor mechanical strength and oxidation resistance of most fresh-keeping films, And the antibacterial range is narrow, the degradable speed is relatively slow, and there are many problems such as certain limitations on the freshness of fruits and vegetables. Including 1.8% chitosan; 2% acetic acid; 0.75% glycerin; 0.00%-0.15% Aralia changbai root extract, sodium hydroxide, glacial acetic acid, sodium nitrite, aluminum nitrate