Edible membrane with biological activity and preparation method thereof

Abstract

The invention relates to an edible membrane with biological activity and a preparation method thereof. The edible membrane is processed from the following raw materials in parts by weight: 80-95 parts of a base material, 5-20 parts of a plasticizer, and 1-10 parts of an additive with biological activity. The base material contains starch, gelatin, sodium alginate, agar, pectin, carrageenin, methyl cellulose, hydroxy propyl cellulose, hydroxyethyl cellulose and a mixture thereof, and the additive with biological activity is an extract product of medicinal fungus; the prepared edible membrane contains an additive with biological activity function which is a polysaccharide-protein mixture and is extracted from lucid ganoderma and other medicinal fungi, and has antifungal, antibacterial, antiviral and antineoplastic functions, and a function of immunopotentiator.

Description

technical field [0001] The invention relates to an edible film with biological activity and a preparation method thereof, belonging to the technical field of food packaging materials. Background technique [0002] So far, there have been a large number of biodegradable polymer packaging materials prepared from different polymer compounds, and their film compositions are known. In terms of mechanical properties, the film is comparable to polyethylene, polypropylene, polyvinyl chloride and other materials that take decades to degrade in the natural environment. However, most packaging materials are inedible and cannot be used as part of food. [0003] There are a large number of edible films that can be eaten with food, using starch and its derivatives, cellulose and its derivatives, chitosan, dextran, trehalose, pectin, xanthan gum, etc., as well as proteins, Collagen, casein, fat and its derivatives, etc. are the main raw materials for preparation. All these packaging mat...

AI Technical Summary

Problems solved by technology

However, due to the use of high-priced cyclodextrin and sulfuric acid fiber, the cost of the prepared membrane is very high, and it is difficult to realize the marketization of the product, and because the membrane contains ether oil, the mechanical properties of the membrane are low

[0006] The patent invention closest to the present invention is that the film composition and preparation method contain colloidal substances, collagen, sodium alginate and algae extract (CN201510059252.6). The film has an algae flavor, and the defect of the preparation method is that the algae extract is prepared A large amount of ethanol and algae residues need to be removed during the process, which makes the membrane preparation complicated and expensive. At the same time, from the lack of data such as tensile strength, the mechanical properties of the membrane are not strong, making this method impractical and unable to realize industrial production.