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Production of exotoxins by Aeromonas spp. at 5°C
Author(s) -
Majeed K.N.,
Egan A.F.,
Rae I.C. Mac
Publication year - 1990
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1990.tb01524.x
Subject(s) - hemolysin , enterotoxin , microbiology and biotechnology , aeromonas hydrophila , aeromonas , biology , toxin , vibrionaceae , bacteria , virulence , escherichia coli , biochemistry , genetics , gene
The ability of 60 strains of Aeromonas to produce enterotoxin and haemolysin after cultivation at 5°C for 7–10 d was investigated. The strains were isolated from lamb meat, offal, carcasses and faeces, and had previously been tested for their ability to produce these exotoxins at 37°C. The results showed that some strains of Aeromonas hydrophila and A. sobria were capable of producing enterotoxin and haemolysin at 5°C, but none of the A. caviae strains tested produced these two factors. Of the 30 A. hydrophila strains investigated 25 and 27 were enterotoxigenic and haemolytic respectively. Likewise, of the 24 A. sobria strains investigated 16 and 18 were enterotoxigenic and haemolytic respectively. The results indicate that certain strains of Aeromonas species, in particular A. hydrophila and A. sobria , are of potential public health significance in meats stored at refrigeration temperature.