An antioxidant activity may also be essential in inhibiting tyrosinase
(EC 1.14.18.1), an enzyme involved in melanin production.
Alterations in melanin production might be responsible for a part
of the pathological features unique to malignant melanoma (Prasad
et al., 2010) and melanin may be part of the high resistance
of melanoma to chemo- and radiotherapy (Farmer et al., 2003).