Occurrence of Various Histamine-forming Bacteria on/in Fresh Fishes

Abstract

In the previous paper, the authors reported on the occurrence of N-group bacteria (psychrophilic-halophilic histamine-forming bacteria) on/in red meat fishes.
The present study was undertaken to obtain further information as to the occurrence of the histamine-forming bacteria known, in addition to N-group bacteria on/in fresh fishes.
The histamine-forming bacteria found in the thirteen red meat fish samples were N-group bacteria, Proteus morganii, P. vulgaris, Hafnia alvei, Citrobacter spp., Vibrio spp., Aeromonas spp. etc. For the summer samples, P. morganii were found most frequently, followed by the N-group bacteria. On the other hand, for the winter samples, only the N-group bacteria were found, and other histamine-forming bacteria were not detected.
The method of isolating the various histamine-forming bacteria was discussed.