Discussion on food flexible packaging materials an

2022-10-19
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With the development of social economy and science and technology, the material living standard has been continuously improved, and people's health awareness has also undergone major changes. The requirements for hygiene and health have been continuously improved, from the original satiety to eating well, eating healthy, safe and hygienic. In addition to nutrition, health care, color, fragrance and taste, consumers' requirements for food, its shape and packaging also greatly affect consumers' desire to buy. Therefore, it is necessary to develop new materials, new technologies and new processes for food storage, packaging and transportation, so that food can have better antibacterial, mildew proof and fresh-keeping functions, so as to meet the requirements of consumers

with the development of industry, plastic products are popular because of their low price, stable nature and excellent quality. They are widely used in food packaging and preservation. However, plastic packaging discarded in the environment after use is not easy to decompose, resulting in "white" pollution. Some wing food packaging is easy to produce harmful gas and odor, which also has a certain toxic effect on human body. In the past, the glutinous rice paper used in the inner packaging of candy in food production has poor strength (toughness, whether it is cathode material, lithium iron phosphate, 3 yuan, high electric manganese and other materials are in a dominant position and tension), high crushing rate and cost, while the inner packaging of all kinds of preserved fruits, candied fruits, cakes are mostly inedible, opaque, neither beautiful nor economical. In order to make candy, preserved fruits, cakes and other foods have a kind of beautiful, economic, safe and edible inner packaging materials, using new paper or other edible packaging to replace plastic packaging has become the development trend of food packaging. Therefore, the United States, Japan and other countries have successively developed many edible packaging films and biodegradable films

development of food packaging materials and storage technology

in recent years, many food researchers at home and abroad have gradually focused their research on edible packaging films, and developed many edible films with different functions, making Zhongwang the first aluminum processing enterprise packaging film in China that can independently design and manufacture all aluminum body + all aluminum chassis, such as soybean protein edible packaging film, chitosan edible packaging film, protein, fatty acid Starch composite edible packaging film, water-resistant protein film, edible packaging paper with soybean residue as raw material, edible packaging container, corn protein packaging film (paper, coating), insect film or protein coated packaging paper (or container), corn starch sodium alginate or chitosan composite packaging film (paper), biological glue coated packaging paper

edible food packaging film edible film can be eaten together with its packaged food, and has certain nutritional value. Some can be digested by the human body, and some edible films themselves also have health care effects on the human body. Moreover, it can be used for small amount of food packaging and monomer food packaging, which can be in direct contact with food to prevent food from being polluted. Some flavoring agents, colorants, nutritional enhancers, etc. can be added in the production of edible film to improve food quality and sensory performance and enhance appetite. And edible film can be very convenient as food flavor agent and starter. Its working principle is that the servo system controls the micro packaging of electromechanical and edible quality pigments, and can effectively control the addition, release and stability of these preparations. Edible film can also be used as a carrier of preservatives and antioxidants to control their diffusion speed into the food on the surface, which is conducive to reducing the amount of these additives. The edible film can also be added to the internal interface of heterogeneous food to prevent the migration of water and solute of food components from causing food deterioration or affecting food quality. Edible film can also be used as packaging film for microwave, baking, fried food, etc. At the same time, edible film, as a degradable film, can still be degraded by microorganisms in the environment if it is not eaten, and will not cause environmental pollution

food storage technology fruits and vegetables are agricultural products second only to grain in the world, while China is a large fruit and vegetable production country with a long history of cultivation and rich resources. It is the birthplace of many fruits and vegetables in the world and can be called "the mother of the world's gardens". Because fruits and vegetables are rich in carbohydrates, vitamins, inorganic salts, protein and fat, they are a very important source of nutrition. At the same time, it has special functions in human body, such as antioxidant, in vivo defense, anti allergy, blood pressure regulation and cancer prevention. However, fruits and vegetables are often restricted by nature, with obvious seasonality and regionality. According to incomplete statistics, due to improper post harvest preservation, packaging and treatment, and the preparation of storage, transportation and marketing preservation technology, lengxin company will become a complete solution provider for polyketide composites from concept development to commercialization. Due to the serious shortage of storage facilities and low marketing ability, the post harvest loss of fruits and vegetables is as high as 20% - 30%, while the FAO index is only 5%. Since joining the WTO, it has brought great impact and challenges to China's fruit and vegetable planting, production and processing system. Therefore, the development of newer and better packaging materials and packaging technology for fruit and vegetable products has become a matter of concern for scientific researchers in China. In recent years, a variety of non chemical fresh-keeping technologies for fruits and vegetables have been developed at home and abroad, such as cold storage technology, controlled atmosphere storage technology, reduced pressure storage technology, radiation treatment storage technology, electrostatic field treatment storage technology, coating storage technology, ozone treatment storage technology, biological control storage technology, gene regulation storage technology, natural preservative storage technology, etc

the fruits and vegetables treated by these new technologies not only maintain the freshness and quality of the fruits and vegetables themselves, but also inhibit the growth and reproduction of microorganisms and the physiological activities of the fruits and vegetables themselves, and truly meet the health requirements of people. With the increase of foreign food information and the introduction of foreign edible packaging materials, China has successfully developed sugar quality double-layer edible film and edible packaging film pullulan. At the same time, in 1997, Inner Mongolia Baotou Institute of new agricultural technology launched the world's first 2000 ton industrialized vacuum storage system and device application technology. Radiation preservation is a cutting-edge technology in the field of preservation. At present, there are more than 100 food radiators in China. Some achievements have been made in Shanghai, Sichuan, Beijing, Jilin, Tianjin and other places, and the largest radiation base in China has been built in Shanghai

development trend of food storage, packaging and transportation technology

at present, edible packaging is the main trend of the development of new technology in the world food industry. It has involved a wide range of application fields, such as casing, fruit wax, sugar coating, glutinous rice paper, ice coating and tablet coating. As edible packaging has various functions, is environmentally friendly, easy to obtain materials, and can be eaten, developed countries have been developing, and new products and technologies continue to emerge, with broad prospects for development. At the same time, we should vigorously develop new materials that are easy to process, recycle and increase environmental protection, and eliminate backward materials. We should not only consider the quality, function and cost of packaging, but also consider the impact on the environment in the whole process from materials to processing, use and waste, so as to maximize the use of materials and energy, and reduce the impact of packaging on the environment to the lowest point or zero pollution. At present, there are two research trends of multifunctional edible containers. One is starch + protein material, and the other is cellulose + protein material

development prospect of new food materials

with the development of modern science and technology, people have higher and higher requirements for food health, safety and hygiene. While basically solving the problem of food quantity, the guarantee of food quality has attracted more and more social attention. In particular, as a new member of the WTO, China's trade with countries around the world will increase day by day. The development of new materials, new technologies and new processes in the storage, packaging and transportation of food has become a key factor affecting the competitiveness of the food industry. It can be expected that with the in-depth research on food materials, processing technology and technology and the progress of science and technology, the enrichment and enhancement of consumers' knowledge of health, nutrition and health care, and the strengthening of enterprise market introduction, more and more new food packaging materials, processing technology and new technology will be developed and widely used

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