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Combined Effect of Salt Concentration and Redox Potential of the Medium on the Initiation of Vegetative Growth by Clostridium welchii
Author(s) -
Mead G. C.
Publication year - 1969
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.1365-2672.1969.tb01000.x
Subject(s) - strain (injury) , chemistry , clostridium perfringens , food science , growth medium , salt (chemistry) , clostridium , microbiology and biotechnology , biology , bacteria , anatomy , genetics
Summary Four strains of Clostridium welchii grew in a medium containing 6% (w/v) of NaCl within 14 days at 37°. In one instance growth was obtained with 7% of NaCl from a large, but not a small, inoculum. Three of the strains grew from a large inoculum in the presence of 0.5 % of NaCl at Eh values of + 194 to + 238 mv. In a medium containing 5% of NaCl no growth occurred unless the Eh level was considerably reduced. The fourth strain was less affected until the NaCl concentration was increased to 6%.