Acquacoltura e Pesca Pubblicazione scientifica Quorum Sensing Activity of Hafnia alvei Isolated from Packed Food FILONE TECNOLOGICO TEMA trasformazione e commercializzazione RIASSUNTO Quorum sensing (QS) is a mechanism adopted by bacteria to regulate expression of genes according to population density. N-acylhomoserine lactones (AHLs) are a type of QS signalling molecules commonly found in Gram-negative bacteria which have been reported to play a role in microbial spoilage of foods and pathogenesis. In this study, we isolated an AHL-producing Hafnia alvei strain (FB1) from spherical fish pastes. Analysis via high resolution triple quadrupole liquid chromatography/mass spectrometry (LC/MS) on extracts from the spent supernatant of H. alvei FB1 revealed the existence of two short chain AHLs: N-(3-oxohexanoyl) homoserine lactone (3-oxo-C6-HSL) and N-(3-oxo- octanoyl) homoserine lactone (3-oxo-C8-HSL). To our knowledge, this is the first report of the production of AHLs, especially 3-oxo-C8-HSL, by H. alvei. DATA Data di pubblicazione: 14/04/2014 AUTORI TAN JIA-YI YIN WAI-FONG CHAN KOK-GAN RIVISTA Sensors (Basel, Switzerland), 14(4), 6788-6796 IMPACT FACTOR 3,510