. 2021 Mar 12;100(7):101116. doi: 10.1016/j.psj.2021.101116

Table 2.

Effect of LGEO on Salmonella Heidelberg (Isolates 466 and 1904) biofilm formation on microtiter plates incubated at 41°C for 96 h (means^⁎ ± SE; n = 6/treatment).

	Absorbance (OD₆₀₀ nm)
	S. Heidelberg 466		S. Heidelberg 1904
Treatment	Biofilm-associated	Planktonic	Biofilm-associated	Planktonic
Positive Control	0.131 ± 0.008^d	0.198 ± 0.048^b	0.156 ± 0.008^b	0.465 ± 0.030^c
0.0075% LGEO	0.090 ± 0.007^c	0.167 ± 0.021^b	0.170 ± 0.013^b	0.177 ± 0.039^b
0.15% LGEO	0.027 ± 0.007^b	0.016 ± 0.001^a	0.027 ± 0.001^a	0.012 ± 0.002^a
1% LGEO	0.059 ± 0.004^a	0.040 ± 0.003^a	0.045 ± 0.007^a	0.027 ± 0.002^a

Biofilm-associated cells were measured indirectly through absorbance of crystal violet and planktonic cells were measured through absorbance of nutrient broth (LB).

^a-d

Treatments within each sampling time without common superscripts differ significantly from one another (P≤ 0.05).

^⁎

least square means.