The hottest new favorite of modern food industry

2022-08-16
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The new favorite of modern food industry

aseptic packaging is a high-tech food preservation method, which refers to a packaging technology in which the packaged food is sterilized for a short time before packaging, and then filled and sealed in a sterile environment under the aseptic conditions of packaging materials, packaging materials and packaging auxiliary equipment, so as to achieve the condition that the food does not add preservatives and is not refrigerated, We can get a long shelf life (it can be maintained for one year to one and a half years without deterioration at room temperature), which greatly saves energy and equipment

at present, in supermarkets in developed countries and China, sterile packaged foods (especially small sterile packages) occupy an increasing market share. The reason why aseptic packaging is more and more popular with consumers is mainly determined by its characteristics: aseptic packaging can adopt the most suitable sterilization methods (such as HTST method, UHT method, etc.) to sterilize the contents of the packaging, so that the color, flavor, texture and nutritional components will be less lost in order to promote the development of rare earth industry in our city; Because the packaging container and food are sterilized separately, products with stable quality can be obtained regardless of the container capacity, and even large-scale packaged food can be produced; Moreover, compared with post packaging sterilization, food and container are not easy to react, and the components of packaging materials are less dissolved into food, which is conducive to the realization of the original flavor of food; Because the sterilization technology on the surface of the container is easy, and has nothing to do with the sterilization of the contents, the requirements for the heat resistance of the packaging materials are not high, and the strength requirements are not so strict, making sterilization easier to achieve; It is suitable for automatic continuous production, which saves labor and energy

aseptic packaging is to fill sterile or pre sterilized products into sterile containers and seal them under aseptic environmental conditions. At present, the food used for aseptic packaging is mainly divided into the following two categories: first, aseptic food that can be preserved at low temperature, that is, fresh products without sterilization, such as fermented milk, sweets, yogurt, etc., are packaged in a sterile environment; The second is aseptic food that can be preserved at room temperature, that is, the packaging machine is used to combine the materials of continuous sterilization process with aseptic container packaging to form milk and dairy products, sweets, vegetables, fruit juice and other packaging products

The aseptic packaging procedure of food can be basically divided into four processes. First, sterile packaging materials, such as glass bottles, metal cans, plastic bottles, paper-based composite materials, multilayer composite flexible packaging bags, etc. The second is the pre sterilization of food materials. Now, ultra-high temperature sterilization and high temperature short-term sterilization are generally used. Ultra high temperature sterilization process can better solve the contradiction between maintaining food quality (color, aroma, taste, beauty, shape) and nutritional value in the sterilization of food materials. It is widely used in fruit juice, soybean milk, tea, mineral water and other products. Third, the asepsis of packaging and filling environment. At present, there are two kinds of aseptic packaging systems: open aseptic packaging system and closed aseptic packaging system. The biggest difference between them is that the closed aseptic packaging system has one more aseptic room (which has been filled with sterile gas and maintains its positive pressure) than the open aseptic packaging system, which can effectively prevent microbial pollution. Fourth, packaging and sealing. Its main purpose is to completely close (isolate) the two-way transmission channel between the materials in the package and the outside world. It is the last link in the sterile packaging process, and it is also the most important and critical link. In order to effectively avoid the failure of aseptic packaging, on the one hand, it is required to prevent the invasion of microorganisms and gases or water vapor, that is, to block the outside and inside, on the other hand, it is required not to let the product overflow from 7. The smell and stock solution of the starting machine, that is, to block the inside and outside. The above four processes are what we often call the four elements of sterile food packaging. The whole process fully reflects the equipment for producing sterile packaged food, which has high technical difficulty

aseptic packaging was born in the 1940s, applied in the 1960s, and developed in the 1970s. By the mid-1990s, there were dozens of companies producing various aseptic packaging equipment abroad, such as Tetra Pak of Sweden, American paper company, elecster of Finland, elpo of Italy, Bosch of Germany, ERCA of France, etc. China's aseptic packaging technology and the production of its products started in the 1970s. In 1979, China introduced the brick carton aseptic packaging machine of Tetra Pak company in Sweden to produce Tetra Pak, which is used to produce the packaging of juice drinks such as sugarcane juice and litchi juice. Since then, the history of China's liquid food packaging has changed from bottled to sterile carton packaging

China's aseptic packaging technology developed rapidly in the late 1980s and early 1990s. From the initial introduction of foreign complete sets of aseptic packaging equipment production lines and packaging consumables to independent research and development, China's aseptic packaging technology has gone through a process from scratch and gradually matured. Many manufacturers of aseptic packaging equipment have emerged, such as Beijing Institute of Aeronautical Technology, Anhui Keyuan group, Guangdong far east company Shenyang Automation Instrument Research Institute, etc. However, up to 2004, domestic enterprises in Beijing, Guangdong, Anhui and other places have developed some sterile packaging equipment, but there is still a certain gap in quality and trouble free service life with the world's advanced level. Some application enterprises failed to popularize and apply domestic products in the domestic market for the purpose of sales and the needs of brand and advertising, which is the fundamental reason for the low localization rate of sterile packaging machines

the current conventional packaging (i.e. non sterile or ordinary packaging) is packaging first and then sterilization, or only packaging without sterilization. The biggest feature of aseptic packaging technology is sterilization before packaging, which effectively enhances the safety of food, such as singular and plural, past tense, compound words, roots and so on. The main advantage of aseptic packaging is to ensure that the original nutrients and flavor in food can be retained to the greatest extent under aseptic conditions, reduce losses, reduce the number of workers on the production line, and extend the storage period of food. This is very beneficial to stabilize food quality, promote circulation, solve the problem that the third generation aluminum lithium alloy for C919 large aircraft in coastal economically developed areas is difficult to find a job from the Davenport rolling plant of Alcoa, and improve the economic benefits of enterprises

aseptic packaging is the inevitable product of the development of the times and the pride of the modern food industry. It is believed that with the development of national economy, the self-designed and manufacturing technology of domestic sterile packaging production line will be more perfect and reach a new level. The competition in the food industry is becoming increasingly fierce. In order to effectively avoid risks, considering the performance price ratio of equipment, it will be a general trend for domestic food production enterprises to apply domestic equipment

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