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Most 'best by' dates have little to do with food safety and more to do with food quality and are provided by the manufacturers, not by any overseeing organization. How to Tell When Canned Foods ...
Foodborne botulism is the rarest form, accounting for only around 15% of cases (US) [53] and has more frequently resulted from home-canned foods with low acid content, such as carrot juice, asparagus, green beans, beets, and corn. However, outbreaks of botulism have resulted from more unusual sources.
In rare situations, a canned or preserved food that has been compromised may contain a bacteria called Clostridium botulinum, which produces the toxin botulinum. In some instances, eating this ...
Botulinum toxin can be destroyed by holding food at 100 °C for 10 minutes; however, because of its potency, this is not recommended by the USA's FDA as a means of control. [42] Botulism poisoning can occur due to preserved or home-canned, low-acid food that was not processed using correct preservation times and/or pressure. [43]
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The only foods that may be safely canned in an ordinary boiling water bath are highly acidic ones with a pH below 4.6, such as fruits, pickled vegetables, or other foods to which acidic additives have been added. Although an ordinary boiling temperature does not kill botulism spores, the acidity is enough to stop them from growing.
Canned foods typically have a long shelf life, often lasting several years past the printed date if they're stored in a cool, dark environment and the can remains sealed. The can’s expiration ...
Canning of food can preserve food for a particularly long period of time, whether done at home or commercially. Canned food is vacuum packed in order to keep oxygen, which is needed by bacteria in aerobic spoilage, out of the can. Canning does have limitations, and does not preserve the food indefinitely. [14]