. 2010 Oct 11;2011:972494. doi: 10.1155/2011/972494

Table 4.

Surface tension and hydrophobicity (mJ · m⁻²) of the four pathogens determined from contact angle measurement.

Organism	pH	γ _S ^LW	γ _S ⁺	γ _S ⁻	γ _S ^AB	γ ^TOT	ΔG _mwm ¹
A. hydrophila	6	35.3 ± 1.0^a	1.9 ± 0.2^b	53.0 ± 0.4^a	20.0 ± 1.0^b	55.3 ± 0.1^a	26.3 ± 0.2^b
	7	35.4 ± 0.7^a	1.5 ± 0.1^b	54.1 ± 0.3^a	18.2 ± 0.8^b	53.6 ± 0.1^a	28.7 ± 0.4^a
	8	35.8 ± 0.4^a	1.7 ± 0.0^b	53.6 ± 0.0^a	18.1 ± 0.0^b	53.9 ± 0.4^a	27.8 ± 0.3^ab

E. coli 0157:H7	6	37.4 ± 0.1^bc	1.5 ± 0.2^a	52.3 ± 1.3^a	17.9 ± 1.3^a	55.3 ± 1.2^a	24.9 ± 0.8^c
	7	38.5 ± 0.1^a	1.4 ± 0.1^a	54.0 ± 0.1^a	17.3 ± 0.3^a	55.8 ± 0.3^a	26.2 ± 0.0^b
	8	38.2 ± 0.6^ab	1.6 ± 0.2^a	53.5 ± 0.4^a	17.9 ± 1.0^a	56.0 ± 0.3^a	25,6 ± 0.4^bc

S. enteritidis	6	36.1 ± 0.7^d	1.7 ± 0.0^a	49.8 ± 0.8^b	18.3 ± 0.3^a	54.4 ± 0.5^a	23.0 ± 1.4^a
	7	38.1 ± 0.0^ab	1.0 ± 0.1^a	51.1 ± 0.2^ab	14.0 ± 0.7^a	52.1 ± 0.7^a	25.1 ± 0.7^a
	8	38.6 ± 0.3^a	1.0 ± 0.2^a	52.0 ± 0.3^a	14.2 ± 1.3^a	52.8 ± 1.0^a	25.6 ± 0.9^a

S. aureus	6	37.5 ± 0.3^b	1.6 ± 0.1^a	46.0 ± 3.5^b	17.0 ± 0.3^a	54.5 ± 0.0^a	17.8 ± 4.4^c
	7	39.7 ± 0.1^a	0.9 ± 0.2^b	54.6 ± 1.3^a	14.2 ± 1.1^b	53.8 ± 1.0^a	27.7 ± 2.1^ab
	8	36.5 ± 0.1^b	1.0 ± 0.1^b	54.7 ± 0.5^a	15.0 ± 0.4^b	51.6 ± 0.3^b	33.4 ± 0.8^a

¹ Free energy of aggregation of the microorganisms in water where γ _S ^LW, γ _S ⁺, γ _S ⁻, γ _S ^B, and γ ^TOT are, respectively, the Lifshitz-van der Waals contribution energies, electron acceptor (acid), and electron donor (basic) components of the wetting agent and bacterial lawn, Lewis acid-base bonds and the total surface energy of the bacteria.

^a–d In a column, for a given bacterium, values with the same letter are not significantly different (P > .05).