Research Article

Melanogenesis and Antityrosinase Activity of Selected South African Plants

Table 2

Inhibitory activity of selected plants on tyrosinase when both tyrosine and L-DOPA are used.

Plant extracts
Tyrosine L-DOPA

Aloe aculeata Pole-Evans (Leaves)31
Aloe arborescens Mill. (Leaves) *
Aloe ferox Mill. (Leaves)60
Aloe pretoriensis Pole-Evans (Leaves)17
Aloe sessiliflora Pole-Evans (Leaves)13
Aloe vera (L.) Burm.f. (Leaves) *
Calodendrum capensis Thumb. (Leaves) *
Calodendrum capensis Thumb. (Bark) *
Harpephyllum caffrum Bernh. (Leaves)9070
Harpephyllum caffrum Bernh. (Bark)9260
Sclerocarya birrea (A. Rich.) Hochst. (Nuts) *
Ximenia americana L. (Nuts) *

*not tested, —not active.