Edible potato starch powder composite food packaging film and its preparation method

Abstract

An edible potato starch composite film as a packaging material of food is prepared from potato starch, thickening agent, and plasticizer through mixing potato starch with water for gelatinizing, adding thickening agent and plasticizer in sequence, stirring, filtering, vacuum defoaming, and filming by the doctor blading method. Its advantages are low cost, high transparency and strength, and full degradation.

Description

technical field [0001] The invention belongs to the technical field of food packaging, in particular to an edible potato starch composite food packaging film and a preparation method thereof. Background technique [0002] The problem of food packaging has been widely concerned in the food industry, because the food packaging used in today's society is basically plastic film. After plastic is used as food packaging film to package food, it is easy to produce harmful gases and odors, and some are harmful to the human body. It has certain toxic and side effects, and cannot meet the requirements of consumers with increasing living standards for food preservation, taste preservation, color preservation, and nutrition preservation. Moreover, plastics cannot be degraded, and their waste dumping and accumulation pose a serious threat to the environment. According to statistics, the total global plastic consumption in 1998 has reached 220 million tons, including a large number of foo...

AI Technical Summary

Problems solved by technology

[0002] The problem of food packaging has been widely concerned in the food industry, because the food packaging used in today's society is basically plastic film. After plastic is used as food packaging film to package food, it is easy to produce harmful gases and odors, and some are harmful to the human body. It has certain toxic and side effects, and cannot meet the requirements of consumers with increasing living standards for food preservation, taste preservation, color preservation, and nutrition preservation. Moreover, plastics cannot be degraded, and their waste dumping and accumulation pose a serious threat to the environment.

According to statistics, the total global plastic consumption in 1998 has reached 220 million tons, including a large number of food packaging films (bags), whose waste is 30% of the weight of solid waste (more than 50% of the volume), so through the development of biological Gradually eliminating "white pollution" by degrading plastics has become a hot spot in the world. The annual growth rate of the consumption of biodegradable plastics in the United States is 30%. However, the consumption of biodegradable polymers in the world will only be the total consumption of plastics by 2000. 2%, so it is far from meeting the needs of society to eliminate "white pollution"