Table 2. The effect of extracts on biofilm formation and cell growth of Yesinia enterocolitica.

		Biofilm (Abs595, CV1))			Cell density (Abs595)
Extract amount (g/L)		0	0.495	InB2) (%)	0	0.495	InC3) (%)
Agastachis Herba	Water	1.6994	1.2188	28	0.7442	1.0474	–41
	50% ethanol	1.7534	1.0982	37	0.7294	0.9280	–27
	95% ethanol	1.7148	1.6670	3	0.5948	0.5954	0
Agrimoniae Herba	Water	1.5542	0.7700	51	0.7642	0.2790	64
	50% ethanol	1.6838	0.1306	92	0.7132	0.2084	71
	95% ethanol	1.5148	1.2628	17	0.6898	0.2372	66
Diospyros kaki leaves	Water	1.7280	0.9954	42	0.7756	0.5230	33
	50% ethanol	1.5784	0.6744	57	0.6636	0.2240	66
	95% ethanol	1.6336	0.8906	46	0.6546	0.3242	51
Elsholtziae Herba	Water	1.7508	1.7036	3	0.7362	0.4254	42
	50% ethanol	1.8038	0.7084	61	0.7396	0.8784	–19
	95% ethanol	1.5498	1.0638	31	0.7622	0.6996	8
Ginkgonis Semen	Water	1.4806	1.2940	13	0.7226	0.8860	–23
	50% ethanol	1.6688	0	100	0.7472	0.5206	30
	95% ethanol	1.6670	0	100	0.6994	0.3114	56
Lycopi Herba	Water	1.5772	1.7966	–14	0.6650	0.2738	59
	50% ethanol	1.5620	1.3348	15	0.7696	0.5444	29
	95% ethanol	1.7486	1.4988	14	0.6882	0.6942	–1
Melonis Pedicellus	Water	1.9298	1.7792	8	0.7448	0.9682	–30
	50% ethanol	1.6574	1.2080	27	0.7490	0.9318	–24
	95% ethanol	1.7834	1.5688	12	0.6212	0.6162	1
Menthae Herba	Water	1.8598	1.4862	20	0.6340	0.3412	46
	50% ethanol	1.8302	0.0768	96	0.6834	0.8912	–30
	95% ethanol	1.5280	0.3960	74	0.5964	0.8578	–44
Mori Radicis Cortex	Water	1.7942	0.8664	52	0.7384	0.8096	–10
	50% ethanol	1.5884	0.6168	61	0.6936	0.5228	25
	95% ethanol	1.6426	0.7638	54	0.6864	0.3190	54
Polygoni Multiflori Radix	Water	1.3580	0.1712	87	0.7316	0.2482	66
	50% ethanol	1.3904	0.0048	100	0.6694	0.1792	73
	95% ethanol	1.5210	0.2904	81	0.7042	0.3292	53
Prunellae Spica	Water	1.7172	1.8892	–10	0.6700	0.6512	3
	50% ethanol	1.6442	0.2876	83	0.7564	0.7846	–4
	95% ethanol	1.6260	0.8640	47	0.7226	0.4340	40
Schizonepetae Spica	Water	1.5222	1.3038	14	0.6998	0.4340	38
	50% ethanol	1.6364	0.0098	99	0.6942	0.8538	–23
	95% ethanol	1.7224	0.3618	79	0.7372	0.7380	0

CV: Absorbance of crystal violet.
In_B: Inhibition degree of biofilm formation (%) calculated according to the formula in ‘Materials and Method’ section.
In_C: Inhibition degree of cell growth (%) = (Abs_595,0 – Abs_595,S) / Abs_595,0 × 100. The calculation was similar with inhibition of biofilm formation except for switching Abs₅₉₅, _CV-0 to Abs_595,0 and Abs₅₉₅, _CV-S to Abs_595,S. Abs_595,S was the cell growth by the extract and Abs_595,0 is the cell growth without extract, 0 g/L of extract.