Table 4.

Interaction energies (10⁻¹⁸ J) between five Salmonella strains and glass, polysulfone, stainless steel, or Teflon and according to the XDLVO theory, at the minimum separation distance^a

Strain	Glass				Polysulfone				Stainless steel				Teflon
	ΔGLW	ΔGAB	ΔGEL	ΔGXDLVO	ΔGLW	ΔGAB	ΔGEL	ΔGXDLVO	ΔGLW	ΔGAB	ΔGEL	ΔGXDLVO	ΔGLW	ΔGAB	ΔGEL	ΔGXDLVO
S1296a	−1.788	5.278	−0.383	3.107	−0.330	0.540	−0.057	0.154	−2.829	−21.287	−0.466	−24.583	−2.608	−7.433	−2.578	−12.6198
S1297a	−1.581	5.124	0.033	3.576	−2.918	5.376	−0.095	2.363	−2.502	−18.910	0.059	−21.352	−2.306	−6.645	−1.722	−10.6730
S1635	−1.775	3.346	0.254	1.825	−3.276	2.489	0.159	−0.628	−2.808	−26.122	0.213	−28.707	−2.589	−8.814	−1.256	−12.6591
S1677	−1.681	4.110	−0.040	2.390	−3.102	3.767	−0.178	0.487	−2.659	−22.532	−0.101	−25.291	−2.451	−7.724	−1.874	−12.049
ATCC 14028	−1.619	4.950	−0.046	3.285	−2.987	5.063	−0.185	1.891	−2.560	−20.023	−0.107	−22.691	−2.361	−6.990	−1.887	−11.237

^aΔG^LW, ΔG^AB, ΔG^EL, and ΔG^XDLVO represent van der Waals, acid-base, electrostatic, and total interaction energy, respectively, at the minimum separation distance (l_o) of 0.157 nm between bacterial cells and substratum surfaces.