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Isolation and typification of histamine-producing Lactobacillus vaginalis strains from cheese

AuthorsDíaz, María; Río Lagar, Beatriz del CSIC ORCID ; Ladero Losada, Víctor Manuel CSIC ORCID ; Redruello, Begoña CSIC ORCID; Fernández García, María CSIC ORCID ; Martín, M. Cruz CSIC ORCID ; Álvarez González, Miguel Ángel CSIC ORCID
KeywordsBiogenic amines
Lactobacillus vaginalis
Issue Date23-Dec-2015
CitationInternational journal of food microbiology 215: 117-123 (2015)
Abstract© 2015 Elsevier B.V. In food, the biogenic amine (BA) histamine is mainly produced by histidine decarboxylation catalysed by microbial histidine decarboxylase. The consumption of foods containing high concentrations of histamine can trigger adverse neurological, gastrointestinal and respiratory reactions. Indeed, histamine is one of the most toxic of all BAs, and is often detected in high concentration in cheese. However, little is known about the microorganisms responsible for its accumulation in this food. In the present work, 25 histamine-producing Lactobacillus vaginalis strains were isolated from a blue-veined cheese (the first time that histamine-producing strains of this species have been isolated from any food). The restriction profiles of their genomes were analysed by PFGE, and seven lineages identified. The presence of the histidine decarboxylase gene (hdcA) was confirmed by PCR. The nucleotide sequence and genetic organisation of the histamine biosynthesis gene cluster (HDC) and its flanking regions are described for a representative strain (L. vaginalis IPLA11050).
Identifiersdoi: 10.1016/j.ijfoodmicro.2015.08.026
issn: 0168-1605
e-issn: 1879-3460
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