How can you tell if canned food is bad? Do you know the signs of spoiled canned food that might be deadly? There are several ways harmful bacteria can contaminate canned food. In the United States, there are over 100 cases of botulism are reported each year. This harmful bacteria can cause serve illness and even death.
Is there a way to tell if canned tomatoes are spoiled? A person can’t see or smell if a can is contaminated with botulism spores, however, there are other contaminates that can be seen and smelled. The good news is that most of the signs that canned food has spoiled are fairly easy to recognize once you know what to look for. Below are 8 warning signs of bad canned food. If you are concern about a can or jar of food, don’t risk it!
Canned Food Gone Bad
Can you guess the 8 signs below of how to tell if canned food is bad?
1. A Lid that Bulges Moving Up & Down
This unsafe can of whole potatoes had been exposed to extremely cold temperatures and relatively hot temperatures in my garage, over a 6 month period.
2. Food Projecting or Exploding When Opened
Click here to see a YouTube Video
3. Rusting / Corrosion of Can
This was pulled out of a house fire and it was covered with soot. Soot and moisture corrodes metal. Corrosion will eventually create holes that let in air and bacteria.
Dents compromise the integrity of the air-tight seal which can expose the food to harmful bacteria.
6. Acrid Smell
If it smells pungent, acidic, chemical, or has an unnatural smell don’t eat it!
7. Rising Bubbles or Unnatural Looking Colors
The picture above is of a well shook can of safe bubbles. I didn’t have an example of unsafe bubbles so I thought I’d show you safe bubbles. The bubbles to be watchful of are small rising gas bubbles.
8. Sound – Hisses Loudly When Opened or
No Sounds of Liquid Inside When Shaken
A soft quiet hiss when the air rushes into a can you are opening is normal but a can that hiss loudly when opened is a warning sign.
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So if a can is bulging, projecting, rusting, leaking, is dented, has a weird smell, looks funky, or hisses loudly DON’T taste it and handle it carefully! “Contact with botulinum toxin can be fatal whether it is ingested or enters through the skin. Take care to avoid contact with suspect foods or liquids.” Carefully dispose of the contaminated food.
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