What Is The Reason Why Vacuum-packed Food Still Spoils Quickly?

There may be several reasons why food may still spoil quickly after vacuum packaging:
Incomplete packaging: If the air in the package is not completely removed when the food is vacuum packed, a certain amount of oxygen will be left behind, which can promote the growth of microorganisms and the oxidation of the food, leading to food deterioration.
Packaging damage: Vacuum packaging bags may be slightly damaged during storage or transportation, which allows air to penetrate, destroying the vacuum environment and increasing the risk of food spoilage.
Microbial contamination: If the food has been contaminated by microorganisms before packaging, some anaerobic microorganisms can still grow even in a vacuum environment, causing food spoilage.
Chemical spoilage: Some foods may undergo non-microbial chemical spoilage, such as fat oxidation, which may occur even in the absence of oxygen.
Improper storage temperature: Temperature has a significant impact on the shelf life of food. If vacuum-packed food is not stored at the appropriate temperature, such as refrigerated or frozen products that are not properly refrigerated, food deterioration will be accelerated.
The food itself has a short shelf life: Even if some foods are vacuum packed, they can only stay fresh for a short period of time due to their own characteristics, especially those perishable foods.