The Resistance of Spores ofClostridium botulinumType E to Heat and Radiation

摘要

Spores ofClostridium botulinumtype E have been screened for resistance to heating in aqueous suspension at 60, 70 and 80°.D176ranged from<0·33 min to 1·25 min.zvalues of eight strains were between 9·0 and 10·7, and for one strain was 7·4.Radiation survivor curves have been plotted for nine strains, and a further nine strains screened. The “shoulder” extends to about 0·4 megarad, whereafter the curve becomes exponential within aDvalue from 0·065 to 0