Vacuum sealed hamburger meat that is frozen can last 2 to 3 months. When it is thawed, it shouldn't be kept in the refrigerator more than a couple days.
Vacuum-sealed meats can last for up to a year, but the flavor gradually fades after the six-month mark. While the meat will still be edible a year or more later, it won't taste all that great.
Vacuum sealers are devices which remove air from food items, thus increasing their lifespan. How much longer food will last with a vacuum sealer depends on the type of food sealed. Fresh meat may last 2-3 years vacuum sealed, while ground beef may last up to a year. By contrast, vacuum sealed cheese will only last about 6 months. Breads, on the other hand, may last only 6 weeks vacuum sealed.
They usually keep it frozen.
No. Vacuum seals keep out air, so the bacteria cannot grow.
1 month max.
you can keep beef up to a year in the freezer
To keep beef in the freezer effectively, wrap it tightly in plastic wrap, aluminum foil, or freezer paper to prevent freezer burn. Alternatively, use vacuum-sealed bags for optimal preservation. Label the packaging with the date to track freshness, and store the beef at 0°F (-18°C) or lower for best quality. Avoid storing beef in its original store packaging, as it may not provide adequate protection in the freezer.
You can store any frozen food for 6 months unless it it not packaged properly and it gets freezer burn.
No vegitable need to breath unless they are frozen
You can keep lettuce vacuum-sealed in the freezer because you will break the cellular structure that makes it crispy. But you can freeze tomatoes and use it for tomato sauce later.
Generally you can freeze any meat that hasn't been previously frozen (freezing twice destroys the cell structure resulting in pour texture and flavor.) Vacuum packing simple removes any air from inside the package, which generally allows meat to keep for longer. If you plan to freeze meat, it is best to leave it in the vacuum pack, but not necessary. Re-wrap meat in a freezer bag and remove as much air as possible before sealing.
Stainless steel with a hollow air core vacuum sealed is the best. Stanley is one of the best.