Bacteria used to ferment foods contain enzymes, which decarboxylate amino acids to amines. Histamine in formed in food stuffs by the enzymatic decarboxylation of L-histidine by histidine decarboxylase produced the growth of certain bacteria.
L-histidine occurs in the bound form in proteins, but it is also present as the free amino acid in relatively high concentration in the tissues of certain fish e.g. tuna and mackerel.
Histidine decarboyxlase is found in some bacterial species. These include various species of Enterobacteriaceae, Clostridium, Vibrio, Photobacterium, and Lactobacillus.
The presence of most of the bacteria is often the result of unacceptable food-handling and hygienic practices.
Histamine, tyramine, and other amines such as putrescine, tryptamine, and cadaverine have been found in a variety of fermented foods including cheeses, meats, vegetables, fish products, and Oriental foods.
Histamine formation in food
Nutrition is a scientific discipline that encompasses a structured body of knowledge. It includes various fields such as clinical nutrition, community nutrition, public health, food policy, and food science. At its core, nutrition is the study of how the body utilizes food. It is essential to life. Understanding nutrition enables us to make better dietary choices by determining the necessary nutrient intake, identifying optimal food sources, and recognizing beneficial or harmful food components.
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