TYPICAL DESTRUCTION TIMES (IN MINUTES) OF BACTERIAL SPORES SUBJECTED TO MOIST HEAT

(REVISED FROM PERKINS74)

Organism

212F

100C

221

105

225

107

230

110

239

115

248-250

120-121

257

125

266-270

130-132

273-275

134-135

Value

F / C

Inestigator
B. anthracis 2 . . . . . . . . . Schneiter and Kolb
B. anthracis 15 . . . . . . . . . Stein and Rogers
B. anthracis 10 10 . . . . . . . . Murray
B. cereus 14.2D . . . . . . . . 18.0/10.0 Murrell and Warth
B. coagulans 270D . . . . . . . . 18.0/10.0 Murrell and Warth
B. larvae 160 . . 41 . 8.6 . 1.9 1.2 30.0/16.8 Calesnick and White
B. subtilis 17 . . . . . . . . Schneiter and Kolb
B. subtilis . . . . 1.6D 0.35D 0.10D 0.017D . 14.8/8.3 Pflug
B. subtilis 10 . . . . . . . . . Ecker
B. subtilis 14 6 . . . . . . . 23.4/13.0 Williams
Cl. botulinum 330 100 32 10 4 . . . 18.0/10.0 Esty and Meyer
Cl. botulinum . . . 30 10 4 . . . 19.8/11.0 Hoyt, Chaney, and Cavell
Cl. botulinum 300 120 . 90 40 10 . . . . Tanner and McCrea
Cl. botulinum 300 40 . . . 6 . . . . Weiss
Cl. botulinum 360 . . . 10 . . . . 18.0/10.0 Ball
Cl.bifermentans 45 21 . . . . . . . 27.0/15.0 Esty and Meyer
Cl. oedematiens . . . 10 4 1 . . . 19.8/11.0 Hoyt, Chaney, and Cavell
Cl. oedematiens . . . 15 . . . . . . Ecker
Cl. sporogenes 150 45 . 12 . . . . . 16.2/9.0 Esty and Meyer
Cl. septicum . . 5 . . . . . . . Ecker
Cl. tetani 90 25 . . . . . . . 16.2/9.0 Esty and Meyer
Cl. tetani 25 10 . . . . . . . 21.6/12.0 Murray and Headlee
Cl. welchii . 5 10 . . . . . 23.4/13.0 Headlee
Cl. welchii . 5 . . . . . . . . Ecker
Cl. welchii . . 5 . . . . . . . Underwood
Putrefactive anaerobe 780 170 41.6 15.6 5.6 . . . . McCulloch
Putrefactive anaerobe . . . 8.0D . 0.37D . 0.028D . . Frank and Campbell
Putrefactive anaerobe . . . 110 30 9 4 . . 20.0/11.2 Schmidt
Thermophiles 834 405 . 100 40 12 4.6 2.2 0.9 18.0/10.0 Bigelow
B. stearothermophilus 714D . . . . . . . . 18.0/10.0 Murrell and Warth
Spore soil 660 . . . 15 . . . . . Ecker
Spore soil 1020 420 420 120 15 6 . . . 16.2/9.0 Konrich

D value = Decimal Reduction Time. Minutes required to destroy 90 percent of the cells when exposed to given temperature

Z value = Number of degrees F per tenfold change in thermal death time.