. 2000 Aug;66(8):3234–3240. doi: 10.1128/aem.66.8.3234-3240.2000

TABLE 1.

Vegetative cell heat resistance of cpe-positive C. perfringens isolates^a

Isolate	Origin	D value at 55°C (min)
Food poisoning isolates carrying a chromosomal cpe gene
NCTC 8239	Europe, 1950s^b	16.5
191-10	United States, 1990s^c	11.2
C1841	United States, 1980s^b	13.6
FD1041	United States, 1980s^b	12.5
NCTC 10239	Europe, 1950s^b	12.3
E13	United States, 1960s^d	12.1
Avg^e		13.1 ± 0.9
Isolates carrying a plasmid cpe gene
F5603	Humans, Europe, 1980s^b	5.6
F4969	Humans, Europe, 1980s^b	9.1
NB16	Humans, Europe, 1980s^b	8.6
B40	Humans, Europe, 1980s^b	5.0
222	Veterinary, United States, 1990s^b	6.7
153	Veterinary, United States, 1990s^b	6.8
458	Veterinary, United States, 1990s^b	5.0
Avg^e		6.7 ± 1.5

The results are averages based on the results of two independent experiments. The results were very reproducible for each isolate (data not shown).

See references 9 and 10 for further information on the origin of this isolate.

Food poisoning strain 191-10 was kindly provided by Jared Kerr of the Centers for Disease Control and Prevention.

See reference 15 for further information on the origin of food poisoning strain E13.

Average D value of each cpe genotype ± standard error.