Table 1 The shells of 13 different mollusc species investigated in this study
| Class | Species | Eumelanin | Pheomelanin | Previous reports of eumelanin and methods used |
|---|---|---|---|---|
| Bivalvia | C. gigas1 | – | – | [30] UV and IR spectroscopy |
| Bivalvia | L. ornata3 | – | – | – |
| Bivalvia | L. tigrina3 | – | – | – |
| Bivalvia | M. yessoensis3 | – | – | [33] UV spectrophotometry and HPLC–UV |
| Bivalvia | M. edulis2 | + | – | – |
| Bivalvia | P. maximus3 | – | – | – |
| Cephalopoda | N. pompilius4 | + | – | – |
| Gastropoda | C. nemoralis5 | + | + | [7, 20] solubility tests |
| Gastropoda | C. pharaonius6 | ~ + * | – | [21] HPLC–UV |
| Gastropoda | C. marmoreus3 | – | – | – |
| Gastropoda | C. tigris3 | – | – | – |
| Gastropoda | H. asinina7 | – | – | – |
| Gastropoda | S. adriatica8 | + | – | – |
