TABLE 1.

Immobilization of L. monocytogenes and serovar Enteritidis in pure culture using titanous hydroxide and zirconium hydroxide

Organism	Inoculum (CFU/ml)	Avg % immobilizationa
		Titanous hydroxide	Zirconium hydroxide
L. monocytogenes	107	98 ± 2	98 ± 2
	105	98 ± 3	97 ± 2
	103	95 ± 3	98 ± 2
Serovar Enteritidis	107	98 ± 1	97 ± 2
	105	98 ± 1	98 ± 1
	103	98 ± 1	99 ± 1

^aAverage percent immobilization (mean ± standard deviation) of three replicate samples; calculated as previously reported (8): [percent immobilization = (total population in sample before immobilization − total population in supernatant after immobilization) × 100/(total population in sample before immobilization)].