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What causes bulging in canned food?

What causes bulging in canned food?

Microbial spoilage and hydrogen, produced by the interaction of acids in the food product with the metals of the can, are the principal causes of swelling. High summer temperatures and high altitudes may also increase the degree of swelling.

What causes bottom of soda to bulge?

There is also the issue of a soda can that has the top and bottom bulging outwards. This is caused by the soda freezing, causing the water molecules to expand and take up more space resulting in the two ends to bulge out.

What does a bulged can mean?

Any bulging of the ends of a can may indicate a deterioration in quality due to mechanical, chemical, or physical factors. This bulging may lead to swelling and possible explosion of the can. For safety reasons, the contents of these cans should not be consumed.

Are bulging cans safe?

As long as the can is in good shape, the contents should be safe to eat. NEVER USE food from cans that are leaking, bulging, or badly dented; cracked jars or jars with loose or bulging lids; canned food with a foul odor; or any container that spurts liquid when opening. Such cans could contain Clostridium botulinum.

Should you open a bulging can?

A bulging or swelling can indicates that the contents have been infected with Clostridium botulinum, a bacteria that is responsible for botulism. Bulging or swelling cans should never be opened, sniffed or consumed. Commercial and homemade products are all at risk for botulism, as are jarred products.

Will a bulging can explode?

Pressure is exerted on the can, causing bulging at both ends; if the sealed can is left on the shelf indefinitely, eventually it may explode. Do not wait for that to happen. At any sign of swelling or major damage to the can, return it unopened to the store or discard it.

Why should cans with swollen ends be rejected?

If cans are swollen or bulging, it means the food has spoiled and must not be used. If the cans have large dents, seams may have split and the food may be contaminated.

Is botulism killed by cooking?

Despite its extreme potency, botulinum toxin is easily destroyed. Heating to an internal temperature of 85°C for at least 5 minutes will decontaminate affected food or drink.

Does a bulging can mean botulism?

Can of pineapple explode?

Yeppoon grower Mick Cranny said some Asian pineapples have a disease which causes the fruit to rot from the inside. “The gases build up internally and the fruit might even explode, but generally speaking it destroys the fruit and makes it inedible,” Mr Cranny said.

Can of soup popped when opened?

Some cans make a hissing sound when opened because they are vacuum-packed and the noise is a result of air pressure. This is perfectly normal. However, if a can hisses loudly or the contents spurt forcefully out of the can when opened, it may be an indication that the food is unsafe. Do not taste or use such food.