Fungal melanin are divided into two major categories known as
dihydroxyphenylalanine (DOPA) melanin and dihydroxynaphthalene
(DHN) melanin depending on their biosynthetic pathway [7].
Like all natural melanins, the structure of fungal melanin remains
largely unknown because these pigments are amorphous, insoluble,
and are often recovered from natural sources intimately
associated with other cellular materials. Consequently, various
structural studies have involved synthetic melanins derived from
oxidized L-DOPA and DHN but the correspondence of these
materials to naturally occurring melanins is uncertain.