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Heat Resistance and α‐Toxigenicity of Clostridium perfringens Strains in Normal Intestines of Japanese
Author(s) -
Nakagawa Masaaki,
Nishida Shoki
Publication year - 1969
Publication title -
japanese journal of microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 70
eISSN - 1348-0421
pISSN - 0021-5139
DOI - 10.1111/j.1348-0421.1969.tb00446.x
Subject(s) - clostridium perfringens , feces , antitoxin , microbiology and biotechnology , biology , heat resistance , clostridium , organism , toxin , bacteria , paleontology , genetics , materials science , composite material
Heat‐resistant strains of Clostridium perfringens were isolated from normal feces samples of Japanese people more frequently than from European people. However, the predominant number of the C. perfringens cells in the human intestines were sensitive to the heat at 100 C for 10 min. This proved to be true of the feces samples which were demonstrated to carry the organism resistant to 100 C for 60 min. Further studies indicated that the more the number of the organism in the intestines, the higher was the recovery ratio of the heat‐resistant strains. Concomitant estimation for α‐toxigenicity of those strains isolated from unheated feces samples revealed that the α‐toxigenicity ranged mainly between 0.05 and 0.9 α‐antitoxin equivalents.