Table 5 Thermoresistance of Bacillus spores in a skim milk medium

Organism	Heating temperature F
	203	207	212	Z value
		D value (mins)		(C)
B. licheniformis A-1	17.76	6.40	2.85	6.4
B. licheniformis A-5	20.56	6.00	4.10	6.8
B. licheniformis ATCC 10716	12.10	6.00	2.87	7.8
B. cereus 1	10.16	6.45	3.10	9.6
B. cereus 7	14.40	7.90	2.70	7.1
B. pumilus	4.03	1.65	0.875	7.5
B. cereus var. myccides	10.90	5.30	2.40	7.6
B. coagulans ATCC 7050	6.90	3.53	1.97	9.1
B. laterosporus	5.95	3.13	1.18	7.0
B. circulans	4.75	2.70	2.35	8.4
B. megaterium 9	6.50	2.70	2.35	8.4
B. sphaericus	7.60	4.20	2.25	9.1