Why does vacuum packaged cooked food smell?

Under normal circumstances, vacuum packaged cooked food generally does not spoil or emit a foul odor within its shelf life. However, in our daily lives, we often encounter situations where vacuum packaged cooked food still emits a foul odor within its vacuum shelf life. So, what are the reasons for this?

Here, in addition to the reasons for product odor caused by poor quality of cooked food itself, we will mainly talk about the reasons for the odor of vacuum packaged cooked food from the perspective of product packaging!

1： The barrier properties of the vacuum packaging bag did not meet the requirements

The so-called barrier property refers to the barrier effect of vacuum packaging bags on easily permeable substances such as gases and liquids. If the barrier property of vacuum packaging bags cannot meet the requirements, the oxygen and water vapor transmission rates do not meet the standards, or if the barrier property decreases due to other reasons, the vacuum performance of vacuum packaging bags will fail, leading to food spoilage and odor.

2： The sealing performance of the vacuum packaging bag does not meet the standard

This situation usually occurs in the later stage of product packaging, when the sealing process of vacuum packaging is not tight enough. Of course, there are also cases where the vacuum packaging bag itself may not be qualified. Therefore, when choosing vacuum packaging bags for cooked food, it is necessary to choose reputable large manufacturers and pay attention to product packaging at all times, such as conducting product inspections.

Jinde Packaging has been specializing in the processing of food vacuum packaging bags for 11 years, with rich experience, excellent equipment, strong production capacity, stable quality, and favorable prices. The manufacturer provides personalized customization services such as packaging bag design, printing, and sampling. We can provide various materials such as nylon, polyester, co extruded film, aluminum foil, etc., as well as multiple bag types such as three sided sealing, self-supporting, self sealing, and accordion bags. Suitable for storage in frozen environments, with good toughness, excellent mechanical properties, and low air leakage rate.