In vitro screening of traditionally used medicinal plants in China against Enteroviruses

Table 2 EC₅₀ and selectivity index of five traditionally used medicinal plants in China

Infusion	CC50 (mg/L)	Viruses
		Coxsackie virus B3		Coxsackie virus B5		Echo virus 9		Echo virus 29		Polio virus I
		EC50 (mg/L)	SI	EC50 (mg/L)	SI	EC50 (mg/L)	SI	EC50 (mg/L)	SI	EC50 (mg/L)	SI
Guanidine Sargentodoxa	> 1000.0	35.4	28.2	36.7	27.3	18.6	53.8	33.2	30.1	67.8	14.7
Cuneata (Oliv.) Rehd.et Wils	> 500.0	51.2	9.8	29.1	17.2	12.8	39.1	28.2	17.7	43.2	11.6
Sophora tonkinensis Gapnep.	> 125.0	19.2	6.5	77.5	1.6	6.3	19.8	23.2	5.4	14.9	8.4
Paeonia veitchii Lynch.	> 500.0	115.3	4.3	86.2	5.8	43.5	11.5	65.3	7.7	136.8	3.7
Spatholobus suberectus Dunn.	> 250.0	60.8	4.1	47.1	5.3	14.8	16.9	65.5	3.8	29.1	8.6
Cyrtomium fortuntei J. sm.	> 250.0	64.9	3.9	66.2	3.8	13.6	18.4	44.2	5.7	52.8	4.7