Comparison of Primary Models to Predict Microbial Growth by the Plate Count and Absorbance Methods

Figure 1

Optical density growth curves plotted with the average OD values (±standard deviation) at each sampling time of Bacillus cereus INRA-AVTZ 415 at 30°C in BHI (a), Listeria monocytogenes CECT 4031 at 37°C in TSB+YE (b), and Escherichia coli CECT 515 at 37°C in pH 5 TSB+YE (c). Initial number of microorganisms: (⧫) 10² CFU mL⁻¹; (◊) 10⁴ CFU mL⁻¹; (▲) 10⁶ CFU mL⁻¹.

(a)

(b)

(c)