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Modified atmosphere packaging is also called MAP or CAP abroad, and it is called modified atmosphere packaging or replacement gas packaging or inflatable packaging in China. Commonly used gases include N2, O2, CO2, combined gas O2+N2 or CO2+N2+O2 (ie MAP). Modified atmosphere packaging technology can be widely used to preserve the freshness of various types of food, extend the shelf life of food, and increase the value of food.
The modified atmosphere packaging of fresh pig, sheep, and beef meat must not only maintain the original red color of the fresh meat, but also be antiseptic and fresh. The gas in the modified atmosphere packaging is composed of O2 and CO2. The gas composition varies according to the type of meat.
In meat-controlled atmosphere preservation packaging, the use of high-concentration O2 can keep fresh meat bright red and more vivid. In an oxygen-deficient environment, the meat will appear lavender. If CO2, N2 and other preservation gases are used, the color of the meat will appear lavender, which makes the meat fresher. The period can last about 30 days. Fresh meat packaging materials also require the use of composite plastic packaging materials with high gas barrier properties.
Filling cooked meat products with CO2 and N2 can effectively inhibit the reproduction of coliform bacteria. It can be kept fresh for 5-12 days at room temperature of 20℃-25℃, kept fresh for about 30 days at room temperature after conditioning and sterilization at 85℃-90℃, and kept fresh for 60-90 days at refrigerated temperature of 0℃-4℃.
Food | Shelf life in the air | Shelf life of MAP |
Raw meat | 4-7 days | 9-12 days |
Raw poultry | 3-5 days | 10-15 days |
Fish and seafood | 2-3 days | 4-6 days |
Cheese | 1-4 weeks | 2-12 weeks |
Spaghetti | 1-2 weeks | 3-4 weeks |
Baked Goods | 4-14 days | 4-12 weeks |
Cooked meat | 1-3 days | 10-20 days |
Cooked poultry | 5-10 days | 7-21 days |
Salad | 3-14 days | 7-21 days |
Dry goods | 1-2 months | 4-8 months |
Cooked fish | 1-3 days | 7-12 days |
Fruits and vegetables | 2-7 days | 5-35 days |
Model | RDT320P | RDL480P | RDW570P | RDW620V | RDW700P | RDW730P |
Type | Table Type | Floor Type | Automatic | Automatic | Automatic | Automatic |
Flim Width Max. (mm) | 270 | 450 | 540 | 540 | 380 | 350 |
Flim Diameter Max. (mm) | 240 | 260 | 260 | 260 | 260 | 260 |
Residual oxygen rate (%) | ≤0.5% | ≤0.5% | ≤0.5% | ≤1% | ≤0.5% | ≤1% |
Precision of mixing | ≥99% | ≥99% | ≥99% | ≥99% | ≥99% | ≥99% |
Overall dimensions (mm) | 860×820×705 | 1225x1350x1495 | 3190x980x1950 | 3230x1036x1700 | 3525x1000x1950 | 4000x1100x2250 |
Working pressure (Mpa) | 0.6~0.8 | 0.6~0.8 | 0.6~0.8 | 0.6~0.8 | 0.6~0.8 | 0.6~0.8 |
Power (Kw) | 1-1.5 | 3.5-4.5 | 5-5.5 | 10-10.5 | 4.5-5.5 | 8-9 |
Power Supply (V/Hz) | 220/50 | 220/50 | 220/50 | 380/50 | 220/50 | 380/50 |
Flim Diameter Max. (mm) | 285×180×85 | 550x390 | 435×450 | 260×425×110 | 350x240x90 | 420x240x80 |
Single Cycle Time (s) | 10-12 | 10-12 | 7.5-8.5 | 8.5-10 | 7-8 | 6-8 |
Speed (Trays/h) | 200~300 (1 Tray) | 1200~1400 (4 Trays) | 2500-2800 (6 Trays) | 2100~2500 (6 Trays) | 2100~2500 (5 Trays) | 2700~3600 (6 Trays) |
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