Table 2. Values of IC50 (µg/ml) obtained for lichen extract inhibition on tyrosinase activity.
Lichen species | CHCl3 | CH3OH /CHCl3 | CH3OH | H2O |
---|---|---|---|---|
Letharia vulpina | >500 | >500 | 67 (52–86) | n.d. |
Cetraria islandica | >500 | 86 (61–103) | >500 | >500 |
Parmotrema perlatum | n.d. | >500 | >500 | biphasica |
Flavoparmelia caperata | n.d. | biphasic | >500 | >500 |
Notes.
Non-monotone trend of the dose-response curve (see also Fig. 1).