Table 1.

Tyrosinase inhibition of the 15 most prominent extracts from Greek plants.

Plant Species	Plant Family	Plant Part	Extraction Solvent	Tyrosinase Inhibition
				300 μg/mL	75 μg/mL	IC50 (μg/mL) *
Morus alba	Moraceae	wood	MeOH	97	98	0.4 ± 0.02
Morus alba	Moraceae	wood	EtOAc	83	96	1.3 ± 0.1
Glycyrrhiza glabra	Leguminosae	roots	EtOAc	82	89	2.1 ± 0.1
Glycyrrhiza glabra	Leguminosae	roots	MeOH	92	88	4.7 ± 0.3
Veratrum album	Liliaceae	whole plant	MeOH	78	60	23.5 ± 3.8
Pistacia lentiscus var. chia	Anacardiaceae	branches & leaves	MeOH	76	58	62.0 ± 1.2
Cistus salvifolius	Cistaceae	aerial parts	MeOH	79	45	85.6 ± 10.8
Umbilicus horizontalis	Crassulaceae	whole plant	MeOH	81	51	86.6 ± 11.2
Cistus salvifolius	Cistaceae	aerial parts	EtOAc	71	41	95.3 ± 11.3
Lathyrus clymenum	Leguminosae	perisperm	MeOH	75	40	95.5 ± 2.1
Sedum sediforme	Crassulaceae	aerial parts	MeOH	70	40	116.6 ± 10.2
Paeonia mascula ssp hellenica	Paeoniaceae	aerial parts	MeOH	70	42	135.2 ± 12.2
Armeria canescens	Plubaginaceae	whole plant	MeOH	76	43	138.1 ± 9.0
Cercis siliquastrum	Leguminosae	aerial parts	MeOH	70	25	>150
Pistacia terebinthus	Anacardiaceae	leaves & stems	MeOH	70	35	>150
kojic acid						1.9 ± 0.1

* IC₅₀ values are expressed as mean values ± STD of three different experiments.