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Title

Tyramine and Phenylethylamine Biosynthesis by Food Bacteria

AuthorsMarcobal, A.; Rivas, Blanca de las ; Landete, José María ; Tabera, Laura ; Muñoz, Rosario
Issue Date2012
PublisherTaylor & Francis
CitationCritical Reviews in Food Science and Nutrition 52(5): 448-467 (2012)
AbstractTyramine poisoning is caused by the ingestion of food containing high levels of tyramine, a biogenic amine. Any foods containing free tyrosine are subject to tyramine formation if poor sanitation and low quality foods are used or if the food is subject to temperature abuse or extended storage time. Tyramine is generated by decarboxylation of the tyrosine through tyrosine decarboxylase (TDC) enzymes derived from the bacteria present in the food. Bacterial TDC have been only unequivocally identified and characterized in Gram-positive bacteria, especially in lactic acid bacteria. Pyridoxal phosphate (PLP)-dependent TDC encoding genes (tyrDC) appeared flanked by a similar genetic organization in several species of lactic acid bacteria, suggesting a common origin by a single mobile genetic element. Bacterial TDC are also able to decarboxylate phenylalanine to produce phenylethylamine (PEA), another biogenic amine. The molecular knowledge of the genes involved in tyramine production has led to the development of molecular methods for the detection of bacteria able to produce tyramine and PEA. These rapid and simple methods could be used for the analysis of the ability to form tyramine by bacteria in order to evaluate the potential risk of tyramine biosynthesis in food products. © 2012 Copyright Taylor and Francis Group, LLC.
Publisher version (URL)http://dx.doi.org/10.1080/10408398.2010.500545
URIhttp://hdl.handle.net/10261/61424
DOI10.1080/10408398.2010.500545
Identifiersissn: 1040-8398
Appears in Collections:(ICTAN) Artículos
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