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Identification and Typing of Clostridia in Raw Milk in Egypt
Author(s) -
Naguib Kh.,
Shouman M. T.
Publication year - 1972
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.1365-2672.1972.tb03733.x
Subject(s) - clostridia , clostridium sporogenes , clostridium perfringens , clostridium butyricum , microbiology and biotechnology , raw milk , spore , biology , typing , clostridium , food science , bacteria , fermentation , genetics
S ummary : Three spp. of clostridia were isolated from samples of raw cow and buffalo milk obtained near Cairo. Of 150 isolates of anaerobes, 108 were Clostridium perfringens , 30 were Cl. butyricum , and 12 were Cl. sporogenes. The Cl. perfringens isolates comprised 100 nonhaemolytic and 8 pathogenic haemolytic strains. The latter strains typed by neutralization tests, were of type A. Fifteen of the nonhaemolytic strains were also of type A; of these, 6 strains produced heat resistant spores and 9 strains produced heat susceptible spores. Feeding mice with these 15 nonhaemolytic strains caused marked reduction in intestinal passage time.