About the new trend of edible packaging protective film into food packaging

Edible protective film Edible packaging protective film There are many basic protective films available. According to the characteristics of the main raw materials used, they can be divided into starch, protein, sugar, fat, compound and vegetable. Wait. Compared with other packaging protective films, edible packaging protective films have the following major characteristics: ① water resistance, which can delay the migration and diffusion of water, oil and other components in food; ② optional air permeability and anti-penetration ability, can It can effectively prevent the volatilization of flavor substances in food; ③ It has good physical and mechanical properties, which is convenient for processing and molding; ④ It can be used as a carrier for additives such as food antioxidants; ⑤ It can be eaten without pollution to the environment. It is by virtue of these major characteristics that the edible packaging protective film has the following special advantages under the premise of meeting the basic packaging functions: ① edible, easily degraded by microorganisms, and non-polluting; ② more suitable for single food packaging; ③Some edible films, such as whey protein film and soybean protein film, have high nutritional value; ④It can prevent food deterioration caused by the migration of food components. Although edible packaging protective film has many advantages such as environmental protection and no waste, it does have some practical shortcomings. First of all, the edible packaging protective film is more suitable for the inner packaging of the product, so it is necessary to add a layer of outer packaging when packaging the product, which increases a certain packaging cost. Secondly, the various additives of the new edible packaging protective film and whether the original protective film is completely safe for the human body still need to be evaluated. Furthermore, edible packaging protective films are mainly made of protective films such as sugars, fats, and proteins. Most of them have certain water absorption and are easily biodegraded, so they are prone to mold and rot. In addition, the edible packaging protective film is more suitable for packaging small food and dry food, and is not suitable for packaging food containing moisture. Finally, the edible packaging protective film is an edible packaging protective film that is processed and formed under certain industrial conditions by extracting or refining natural organic small molecules and macromolecules. All are harmful to the human body, so be careful. Edible packaging In recent years, edible packaging has been favored by the food industry in developed countries due to its versatility, environment-friendly, convenient access to materials, and edible properties, and new products and technologies are emerging. In fact, in my country, edible packaging has long been used in real life. For example, the glutinous rice paper wrapped in the outer layer of candy and cakes is made of starch such as sweet potato, corn or wheat flour. It melts in the mouth and is used to prevent adhesion to the outer packaging. . At present, edible packaging has involved a wide range of application fields, such as sausage coating, fruit wax, sugar coating, wafer paper, ice coating and tablet coating, etc., and has appeared in front of the public in various forms. 1. Bean dregs wrapping paper The bean dregs wrapping paper is made of bean dregs as the main raw material. Launched by a Japanese company, it is not only convenient, but also has a certain nutritional value, and is most suitable for the packaging of fast-food noodle seasonings. 2. Edible packaging containers Edible packaging containers are developed and produced by Australia Queensland Potato Chip Container Company, and are mainly used for the packaging of potato chips. The idea is that people can eat the container together after eating the potato chips. It is particularly worth mentioning that in the production process of the container, seasonings with different flavors such as smoked, barbecue, seafood, and sweet, sour, salty, and spicy are also added to meet the tastes of different consumers. 3. Konjac Glucomannan-Carrageenan Edible Packaging Composite Film The film has a certain selective osmosis effect, which can prevent water evaporation, reduce the respiration of fruits and vegetables, reduce the loss of nutrients, and has the effect of inhibiting bacteria and mold. It can be used to package fruits, such as fresh-keeping longan, which can basically inhibit the browning and dehydration of the peel, maintain the original quality of the longan, and prolong the storage period and shelf life. 4. Bio-adhesive-coated wrapping paper This wrapping paper was successfully developed in China. When it is made, special starch glue and bone glue are used, and a certain proportion of additives are added to make a sizing material and smear it on the surface of the paper. This coated wrapping paper is oil and water resistant, and can be used for fast food packaging or food packaging that needs to withstand a certain temperature and moisture. 5. 'Green Box' made of sucrose Recently, CristalUnion, a leading French edible sugar company, announced that it will launch a candy box made of sucrose, tailored for its brand 'Daddy'. The candy box extracted from plants is the same in appearance as the traditional chemical box, but the cost is doubled. However, the new packaging can be recycled, which is very beneficial to environmental protection, so the 'environmental protection brand' will also attract a large number of consumers to buy. Edible packaging protective film is a waste-free resource-based packaging protective film.It can maximize the use of resources and has environmental protection characteristics, which makes it one of the focuses of the future development of the packaging industry. It is believed that with the continuous emergence of new products and new technologies, the application of edible packaging protective film will become more and more extensive, and more and more popular cheap plants and unexploited substances will also be used as new edible packaging. protective film is used.