There are many ways to preserve food, and modified atmosphere packaging is one of the advanced methods. The so-called modified atmosphere refers to placing food in a certain proportion of ideal mixed gas to prolong the deterioration of life biochemistry.
At present, fresh fruits and vegetables, clean vegetables, cut vegetables, and internal food products from major supermarkets in Europe and America have been distributed on shelves under cold chain circulation conditions. In Western countries with high economy and fast pace
Under strict requirements, modified atmosphere packaging has become increasingly important, which is not only a new topic in food engineering, but also an inevitable law of historical development.
Composite modified atmosphere packaging, commonly referred to as map packaging internationally, typically uses gases such as CO2, N2, O2, and a small amount of special gases for preservation. CO2 can suppress most
The growth and reproduction of aerobic spoilage bacteria and molds; O2 inhibits the growth and reproduction of most anaerobic spoilage bacteria; Maintain fresh meat color, maintain oxygen rich respiration and freshness of fresh fruits and vegetables; N2 filling
Qi. The composite gas composition ratio is appropriately selected based on the type of food, storage requirements, and packaging materials to achieve high preservation quality, good nutrient retention, and authenticity of packaged food
It is achieving the original characteristics and delaying the shelf life of freshness preservation.
The so-called preservation of food refers to maintaining the freshness of the original flavor of the food. For cooked food, it is important to maintain its freshness on the day of production. Traditional packaging
Storage can only solve the problem of food quality, but cannot keep food fresh. Due to the issue of shelf life, many truly specialty foods cannot be sold at home and cannot be sold overnight,
The market radius is very narrow, resulting in the loss of a large consumer group. The emerging composite modified atmosphere packaging has largely solved the problem of food preservation, which can extend the shelf life of cooked food
Extending from 1 day to more than 7 days greatly expands the market radius of manufacturers, and also allows consumers to taste local specialty foods thousands of miles away from their doorstep, making them fresh
A better balance has been achieved between degree and safety period for consumers.
Cakes without cream can be kept fresh for 20-30 days at room temperature, while mooncakes and pudding cakes can be kept fresh for 60-90 days at room temperature using high barrier composite films. Bean products and cooked meat from livestock and poultry
Filling with CO2 and N2 can effectively inhibit the proliferation of Escherichia coli. Keep fresh at room temperature of 20 ℃ -25 ℃ for 5-12 days, and after conditioning and sterilization at 85 ℃ -90 ℃, keep fresh at room temperature for about 30 days,
Keep fresh for 60-90 days at a refrigeration temperature of 0 ℃ -4 ℃.
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