Influence of polyamine production and proteolytic activities of co-cultivated bacteria on histamine production by Morganiella morganii

[摘要] Consumption of temperature-abused marine fishcontaining elevated levels of histamine results inhistamine poisoning. Histamine is a biogenic amineproduced in fish by the action of certain groups ofbacteria which are capable of producing an exogenous enzyme called histidine decarboxylase (HDC).Morganella morganii is one of the major causativeorganisms of histamine poisoning. In this study, thehistamine forming potential of M. morganii (BSS142)was evaluated when it was co-incubated with proteolytic as well as polyamine forming bacteria. Thisexperiment was designed to examine whether bioticfactors such as proteolysis and the presence of otheramines influenced histamine forming ability ofBSS142. The study showed that the proteolytic activity of Aeromonas hydrophila as well as Pseudomonasaeruginosa greatly enhanced the histamine formingability of M. morganii. Psychrobacter sangunis, anon-proteolytic polyamine producer, negativelyinfluenced histamine production by M. morganii.

[学科分类] 微生物学和免疫学

[关键词] biotic;hdc;histamine;Morganellamorganii;polyamine;proteolytic