Cooked food products, such as braised chicken wings, duck wings, duck necks, fish, etc., are often ready to eat and are no longer steamed before consumption, thus affecting food quality
The preservation requirements are particularly high. Currently, the most effective method is modified atmosphere packaging for freshness preservation.
Most businesses or enterprises hope that food can effectively extend its shelf life after vacuum packaging, making it easier to sell and transport over long distances. But due to the long shelf life
It is closely related to the sterilization process, so sometimes food additives need to be added to the packaging of vacuum packaging machines to achieve good preservation effects
Packaging can also damage food fiber cells and affect taste, and the gas preservation packaging technology for cooked food is more advanced than quality preservation. Below is a brief introduction to this
New packaging method, modified atmosphere packaging.
Modified Atmosphere Packaging (MAP) is internationally known as Modified Atmosphere Packaging. The principle of the modified atmosphere packaging machine is to use mixed preservation
Gas (oxygen, nitrogen, carbon dioxide are mixed according to the characteristics of the food), which replaces the air inside the packaging box or bag and changes it
The external environment of the food inside the tray can inhibit the growth and reproduction of bacteria (microorganisms), thereby extending the shelf life or shelf life of the food. Different foods,
The composition and proportion of preservation gases are also different.
The commonly used preservation gases for cooked food are nitrogen and carbon dioxide, and the commonly used mixing ratio is 30% CO2 and 70% N2. The ratio of the mixed gases must be
Accurate, otherwise it will affect the freshness cycle of the food. CO2 is a gas that inhibits bacterial growth, but it can only inhibit aerobic bacteria. However, it is harmful to anaerobic bacteria
Bacteria and yeast are ineffective, and the concentration must be precise at 30%. Nitrogen is just a filling gas and does not react with any food. Modified Atmosphere Packaging Finished Products
During storage, transportation, and sales, always control the temperature within the range of 0-4 ℃ to ensure that the product has a shelf life of more than 7 days.
Compared with traditional processing techniques, the entire process of modified atmosphere packaging has the characteristics of reasonable flow, convenient operation, and low energy consumption. The cooked food it produces has
Outstanding advantages include fragrant color, delicious taste, good shape, maintaining the original flavor, high hygiene and safety, and long shelf life for preservation.
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