Inactivation of Pathogenic Viruses by Plant-Derived Tannins: Strong Effects of Extracts from Persimmon (Diospyros kaki) on a Broad Range of Viruses
Figure 1
Cytotoxicity of tannins to cultured cells.
Seven cultured cell lines, (A) MDCK(+), (B) FL, (C) LLC-MK2, (D) Vero, (E) MA104, (F) CRFK and (G) RAW264.7 cells, used for anti-virus tests (Table 2) were individually incubated with 0%, 0.005%, 0.025% or 0.05% of one of the tannin samples (Table 1) in DMEM for 24 h, and viability of the cells was examined by using the MTT assay. The OD570 value of 0% tannin was set to 100%, and the OD570 values in the presence of tannin samples are shown in percent for each tannin sample.