Table 1.

Cytotoxic and anti-JEV activities of R. palmatum extracts and major components

R. palmatum	CC50 (μg/ml)	IC50 (μg/ml)	Virucidal IC50 (μg/ml)
Methanol extract	31.07 ± 3.91	15.04 ± 5.15	7.58 ± 0.16
Water extract	54.80 ± 1.43	51.41 ± 4.95	17.36 ± 2.92
Chrysophanol	18.18 ± 5.53	15.82 ± 2.62	0.75 ± 0.25
Rhein	3.47 ± 2.88
Emodin	5.49 ± 1.82
Aloe-emodin	20.18 ± 1.01	17.39 ± 0.58	0.46 ± 0.15
Physcion	20.69 ± 4.66