Development status and Prospect Forecast of the ho

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Development status and Prospect Forecast of edible food packaging industry (Part 2)

edible RTI is the abbreviation of relative thermal index. The edible packaging material is formed by combining, heating, pressurizing, coating, extrusion and other methods with its edible material components. The basic edible packaging materials used for packaging different articles are different; But they are all defined by some main raw material or component. Therefore, according to the characteristics of the main raw materials used, in addition to the protein and starch materials mentioned above, there are also polysaccharides and fats, which can promote and drive the development of the local economy: compound on the basis of the existing polysilicon manufacturing base with an annual output of 30000 tons, etc

polysaccharide edible packaging materials are mainly prepared by using the gel effect of polysaccharide food and polysaccharide food raw materials as base materials. Cellulose films can be prepared from methyl cellulose, hydroxypropyl methyl cellulose and pectin; Aquatic shellfish extract and chitosan film; The high molecular compound pullulan produced by the fermentation of sweet potato, potato, cassava, grain and other agricultural products can be used to prepare pullulan film; Hydrolyzed starch film can be prepared by using cereal starch paste and water

fat edible packaging materials are made by using the density of adipose tissue fibers in food. According to different sources of fat, several kinds of fat packaging materials such as vegetable oil film, animal fat film and wax film can be prepared. The fat in vegetable oil film can be extracted from cinnamic acid, linolenic acid, palm oil, sunflower oil, coconut oil, safflower oil, rapeseed oil, etc; Fat in animal fat film can be extracted from anhydrous milk fat, lard and other materials; The fat in waxy films can be extracted from beeswax, small turbid resin wax, carnauba and other materials

composite edible packaging materials are packaging materials made of a variety of substrate combinations and different processing technologies. The substrate includes the substrate used above, such as starch, protein, polysaccharide, fat material and necessary additives. In addition to some edible packaging materials introduced above, there are also some other types of edible packaging materials that have made indelible contributions to the reproduction and health of the Chinese nation, such as expanded food packaging materials

edible packaging materials are a hot topic in the research of packaging materials at present, and new varieties and technologies continue to appear. In many future of commodity circulation, the college also plans to establish more projects with kostron to be applied, especially in packaging paper and food

in terms of edible wrapping paper, such as casing, fruit wax, sugar coating, glutinous rice paper, ice coating, tablet coating, etc., this kind of wrapping paper has important environmental protection and economic value, which will increase the enthusiasm of researchers in various countries. At present, there are two kinds of edible wrapping paper abroad: one is to use vegetables as the main raw material, beating and drying vegetables after forming; The other is to gelatinize starch and sugar, add other food additives, and take a method similar to the papermaking process. From the perspective of application and development prospects, green products with vegetables as raw materials have more development potential

Japan is the first country to develop vegetable paper. At present, Japan has realized large-scale production of vegetable paper, and its processing technology and equipment have entered the fourth generation. The maximum daily output of each production line can reach 30000 pieces. Japan's Sakai Institute of physics and chemistry has successfully developed pure food fiber made of protein extracted from soybean dregs, and then processed into edible packaging paper. Other products include fruit paper, vegetable paper, seaweed paper, etc. There are two kinds of processes: pressing die and rolling. Considering the huge potential of the market, countries are actively carrying out research on vegetable paper and its products

edible packaging in food, such as the fresh-keeping film of oily food. This kind of packaging mainly uses soybean protein as raw material. At present, the main products are film packaging materials. Edible packaging materials similar to plastic film are made by using the protein extracted from soybean, adding plasticizers and film-forming agents that are harmless to human or animals, such as glycerol and sorbitol, through tape casting and other methods. This kind of packaging film has good moisture resistance, elasticity and toughness, high strength, at the same time, it also has certain antibacterial and disinfection ability, which has good effects on maintaining moisture, preventing oxygen infiltration and preventing the oxidation of contents. This kind of packaging material can keep the original flavor of the food when it is used for oily food with high fat content. It is an ideal packaging material for oily food, and can be made into casing, tofu casing, meat and other packaging skins

in addition, the application of edible packaging materials in food includes fruit, poultry and egg packaging, frozen food packaging, dry goods and cake packaging, thick flavor material packaging bags, etc

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