TABLE 3.

Summary of growth parameter estimation for Listeria monocytogenes strains at 9.0% NaCl

Method used for strain fitting	% of strains (n = 388) fitted	Best model relative to others used for % of strains (n = 388)b	% of λc < 0 of fitted strains	Range for fitted strainsd
				μ	λ	MaxOD	AUC
Splinea	100	NA	3.1	0.012–0.18	–4.3–12	0.25–1.0	2.7–8.8
Gompertz	88	0.52	13	0.011–0.19	–8.0–57	0.41–265	3.0–8.7
Modified Gompertz	41	39	0	–0.08–0.09	3.9–15	0.034–1.4	3.7–8.2
Logistic	97	19	15	0.011–0.65	–7.7–33	0.36–19	2.7–8.7
Richards	77	42	8.3	0.013–0.13	–2.9–8.2	0.26–2.1	2.7–8.8

^aModel-free splines according to Kahm et al. (49).

^bThe relative quality of models Gompertz, modified Gompertz, logistic, and Richards to fit each of the strains was assessed by using the Akaike information criterion. NA, not applicable.

^cλ, lag phase.

^dμ, maximum growth rate; MaxOD, maximum OD₆₀₀; AUC, area under the curve.