TABLE 1.

Spectrophotometric measurements (mean ± standard deviation) of biofilms of S. Enteritidis and S. Typhimurium.

Biofilm formation in microplate
	Odb	Odnc	Classification
S. Enteritidis	0.29805 ± 0.05790a	0.05144 ± 0.00321	Strong.
S. Typhimurium	0.14591 ± 0.03349b	0.05246 ± 0.00648	Mod.

Odb, optical density of biofilm; Odnc, optical density of negative control; Strong., strongly forms biofilms; Mod., moderately forms biofilms. Mean values followed by the same letter do not differ statistically by the Tukey’s test at 5% probability (a and b = between SE and ST).