Seasoned Advice Asked on July 9, 2021
Suppose I have some food that became unsafe or contaminated by any means besides explicitly adding dangerous substances. It could be past the expiration date, or handled unsafely by leaving at room temperature too long, etc. Another possibility to consider is botulism from damaged cans.
Would it be possible to resurrect food from these situations, making it safe, by sufficiently heating it?
That'd depend on the exact microbes involved in making it unsafe (or, since you probably don't know, the short answer is "no").
There are basically two ways microbial growth makes food unsafe: either by the presence of the microbes themselves, or by toxins the microbes create. Sufficiently heating the food will kill enough microbes, so those ones will be taken care of. Unfortunately, some of the toxins are heat stable, and it just isn't possible to heat the food to a high enough temperature to destroy these toxins without turning the food to charcoal.
The FDA's Bad Bug Book gives details about specific pathogens and their heat-stable and heat-labile toxins.
Correct answer by derobert on July 9, 2021
It really depends on the toxin, but honestly, since you probably will not be able to know that in advance, don't bother, just throw it out.
Answered by BrianX on July 9, 2021
As others have said, this will depend on what has caused the food to spoil. I would add however, that there is a third route that has not been mentioned - spores. Spores are basically kind of the bacterial equivalent of a space suit - bacteria can form spores when conditions are bad and as spores can often survive extremely hostile conditions, including heat, acid, bleach, etc. Spores are especially important in the case of botulism.
If the food has spoiled due to botulism, there is not much you can do to make sure it is safe. You may be able to kill the bacteria and destroy toxin directly in the food by prolonged heating (at least according to the USDA fact sheet below), but even so the spores of the bacteria are heat resistant. If you consume the spores, they can activate and become live bacteria which will then produce the toxin directly in your body, and it is the toxin which can cause serious or fatal damage.
For a good summary of botulism and botulinum toxin, see: https://www.fsis.usda.gov/wps/portal/fsis/topics/food-safety-education/get-answers/food-safety-fact-sheets/foodborne-illness-and-disease/clostridium-botulinum/ct_index
Answered by Ellie on July 9, 2021
Man! Don't even risk it! Toxins, spores, and the like reap peoples lives every day.
If any question on a food in fridge throw it out! Your freezer is your freind in barf, sweat, hurt and die prevention, Its easy and safe right? Otherwise don't take anyone's word on refrigerator spoilage made good to eat again tactics.
Answered by gary on July 9, 2021
Are you nuts? Don't even think about it, bin it.
Answered by user49674 on July 9, 2021
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