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The purpose of vacuum packaging is to isolate the internal and external connections, block or delay the contamination of external microorganisms, so the premise of vacuum packaging must be that the contents must be sterilized and aseptically packaged, otherwise it is meaningless. That's the case with sausages sold in supermarkets. How long it can be stored depends on what it is, pH, salt content, whether preservatives are added and other factors.
You can look for similar products in supermarkets to check the expiration date, like tinplate canned luncheon meat is generally 1-2 years.
Aseptic aluminum foil packaging is a kind of positive empty packaging, which has good airtightness and can relatively extend the shelf life.
There are many drying methods, such as vacuum dehydration, flash freezing and heating drying, but the equipment investment is very large. For general workshop-style meat processing, it is recommended to add salt or preservatives and then warm and dry.
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Aseptic aluminum-platinum packaging can be stored for a long time, up to 1-2 years, while vacuum packaging can be stored for a few days if it is not sterilized, and the time after sterilization will be longer, several months. At the same time, the aluminum-platinum packaging is opaque, which can prevent food from oxidizing.
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Sterile aluminium packaging protects from direct sunlight.
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Summer frozen, the best way.
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1. Temperature and humidity management - the most effective way to inhibit heat dissipation and respiratory volume;
2. Ice cold water treatment - the use of ice cold water and crushed ice to cover the meat;
3. Ice brine treatment - add crushed ice under the condition of salt concentration of %. Treatment in an environment where the water temperature is reduced to 0°C;
4. Plastic wrap packaging - inhibit the evaporation of water, prevent water loss and shrinkage;
5. Refrigeration in cold storage - keep the smooth orange meat fresh at a low temperature of 0 5 °C;
6. Freezer freezing - keep fresh commodities frozen at 18 40 °C low temperature conditions;
7. The letter doutuan adopts refrigerated and frozen transportation equipment to prevent the freshness reduction caused by the transportation of long pin bending time.
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3,000 kilometers, each transport volume is about 10 tons. Transported by refrigerated truck, the temperature of the refrigerated truck can be kept at minus 18 degrees Celsius throughout the whole process, so there is no need to worry about the beef spoiling. Generally, a refrigerated truck more than 7 meters long is fine.
Knowledge about the preservation and refrigeration of meat.
With the development of the national economy and the improvement of people's living standards, people's demand for meat is increasing, and the shelf life of meat products is the key to the storage of meat products. The development of cold storage has also greatly promoted the development of the cold chain logistics industry, and in turn, cold chain logistics has also promoted the development of cold storage. They are closely related, at present, China has a variety of meat cold storage millions of tons, so how long can meat be stored in cold storage?
The following Shanghai ice source refrigeration will introduce to you: 1) Meat can generally be stored in the fresh cold storage for 3-10 days, the so-called fresh cold storage is the cold storage, the general temperature is between 0 5, in this cold storage environment, the general meat can only be stored for 3 10 days, this is suitable for fresh meat refrigeration, especially the kind of cold meat that is in urgent need of cold chain transportation 2) Meat can generally be stored in the freezer for half a year, or even longer, the general storage temperature of the freezer is -18 -23, the lower the temperature, the longer the storage time, Normally, -18 can be stored for about 6 months. If you want to keep it longer, then the temperature should be lower.
Of course, the lower the temperature, the higher the cost of cold storage, not only in the construction of cold storage, but also in the cold storage operation and maintenance costs will increase accordingly. Whether the storage conditions of meat cold storage are good or not, and whether the stored goods are safe, depends on whether the temperature of the warehouse can be controlled well, that is, whether the refrigeration technology can meet the requirements. For example, if the temperature in the warehouse is only around 14, it will be stored for four or five days at most, and the meat will spoil.
When freezing and storing items such as meat, aquatic products, etc., the storage temperature must be kept below 18. Therefore, in general, a refrigeration system with good performance should be used, and fresh meat can be stored in the warehouse for more than half a year. Most of the meat cold storage built by Shanghai Bingyuan Refrigeration has a storage temperature of -18, which is to meet the storage temperature demand of normal meat cold storage.
Of course, sometimes customers ask for lower temperatures, and we can do the same. Under normal circumstances, we will choose refrigeration compressor units, air coolers, condensers, refrigeration pipeline valves, etc. with better performance to ensure the safe and normal operation of meat cold storage. Choosing the meat cold storage built by Shanghai Bingyuan is to choose to rest assured.
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How many do you have? If it's a few dozen catties, use an iron bucket, put dry ice at the bottom, and put beef on top It's OK! But you have to estimate the amount of dry ice, don't run out of dry ice before you arrive in Chengdu! That's it.
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You can use a crisper with refrigeration equipment and nothing else.
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