Table 1. COMSTAT analysis of EHEC biofilms in the presence of essential oils, 4-ethylguaiacol, or eugenol (0.005%).

Chemicals	Volume/Area (μm3 μm−2)	Mean thickness (μm)	Substratum coverage (%)
None	16.9 ± 2.4	15.1 ± 2.2	89 ± 4
Bay oil	1.9 ± 0.3	2.9 ± 0.9	24 ± 6
Clove oil	1.6 ± 0.5	1.9 ± 0.6	31 ± 8
Pimento berry oil	1.1 ± 0.1	1.4 ± 0.2	21 ± 5
4-Ethylguaiacol	1.0 ± 0.3	1.5 ± 0.4	19 ± 6
Eugenol	0.3 ± 0.1	0.4 ± 0.2	6 ± 2