Soluble and edible composite corn starch packing-film and its prepn

Abstract

The present invention relates to one kind of soluble and edible composite corn starch packing-film and its preparation. The composite packing film is prepared with corn starch and konjaku, as well as reinforcer, strengthener and adhesive and through the steps of preparation of main gelatin, preparation of auxiliary gelatin, adding reinforcer, strengthener and adhesive, dissolving with water, gelatinizing to prepare composite gelatin and final filming. The present invention has the advantages of wide material source, no harm to human body, no pollution, high mechanical performance, etc.

Description

technical field [0001] The invention relates to a soluble edible corn starch composite packaging film and a preparation method thereof, belonging to the technical field of food packaging. Background technique [0002] As a soluble and edible packaging film, "glutinous rice paper" is still the main product for packaging such as candy on the market. Due to the brittleness of the film, it is easily soluble in water, which limits its use. In recent years, people have done a lot of work in the development of new soluble edible packaging materials. Some people use corn starch and potato starch as the main materials, supplemented by edible additives. In the inner packaging, although the tensile mechanical strength, toughness, transparency and instant solubility of the product are better than the "glutinous rice paper" used by food factories, it is still brittle and insufficient mechanical strength, so it cannot be used for automatic mechanical operati...

AI Technical Summary

Problems solved by technology

Due to the fragility of the film, it is easily soluble in water, which limits its use

In recent years, people have done a lot of work in the development of new soluble and edible packaging materials. Some people use corn starch and potato starch as the main ingredients, supplemented with edible additives to make edible films, which are used for packaging of candy, preserved fruit and candied fruit. Inner packaging, although the tensile mechanical strength, toughness, transparency, and instant solubility of the product are better than the "glutinous rice paper" used in food factories, it is still not suitable for automatic mechanical operation due to its brittleness and insufficient mechanical strength. Due to poor sealing and other reasons, it is still very limited in practical commercial applications.

Therefore, in the food industry, various plastic or paper-plastic materials of different properties are still widely used in the inner packaging bags of food. After these materials are used, they are not easy to degrade when they are discarded in the environment, and they are stored in a long-term backlog, causing serious environmental pollution.