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any of several toxic bases formed by decarboxylation of an amino acid, often by bacterial action, such as cadaverine, muscarine, and putrescine.
ptomaine poisoning a term commonly misapplied to food poisoning. Contrary to popular belief, ptomaines are not injurious to the human digestive system, which is quite capable of reducing them to harmless substances.
Food poisoning, erroneously believed to be the result of ptomaine ingestion. Not in scientific use.