TABLE 3.

Killing of C. jejuni in chicken feed mixed with MC-TW40 at different concentrations and pHs and incubated with the bacteria at 37°C for 30 min

MC-TW40 added to feed	Viable bacterial count (log10 CFU/ml)a in:
	Tap water at pH 7.0	Buffer at pH 5.5
10 mM MC-0.04% TW40	2.15 ± 0.17	2.07 ± 0.12
5 mM MC-0.02% TW40	3.98 ± 0.35b	3.13 ± 0.51c
0 mM MC-0.04% TW40	6.37 ± 0.81	6.77 ± 0.46

^aThe viable Campylobacter count in the control solution (0.04% TW40, 1% ethanol) with incubation at 37°C for 30 min was 7.07 ± 0.74 log₁₀ CFU/ml. The viable Campylobacter counts were measured after incubation at 37°C for 30 min in a mixture of MC-TW40 in tap water and feed and in buffer and feed. Means ± standard deviations of three experiments are given. The data were analyzed by the Tukey-Kramer method of multiple comparisons among pairs of means.

^bThis bacterial count is significantly (P < 0.01) higher than that at 10 mM MC, significantly lower than that in feed without MC, but not significantly different from that at 5 mM MC in buffer.

^cThis bacterial count is significantly (P < 0.01) lower than that in the feed without MC but not significantly different from that in 10 mM MC in buffer.