Table 1.
Mycosporine-like amino acid composition, relative percentage (%), and mass spectrometry characterization for each analyzed species. AV: Agarophyton vermiculophyllum. CC: Crassiphycus corneus. GC: Gracilariopsis longissima. PL: Pyropia leucosticta.
| Species | MAAs | % Relative | Mol. Formula | λmax (nm) | Exact (ppm) | Calculated (m/z [M + H]+) | Observed (m/z [M + H]+) |
|---|---|---|---|---|---|---|---|
| Porphyra-334 | 40.19 ± 1.33 | C14H22N2O8 | 334 | 0.8 | 347.14489 | 347.14365 | |
| Shinorine | 10.63 ± 2.71 | C13H20N2O8 | 334 | 1.4 | 333.12924 | 333.12799 | |
| AV | Palythine | 42.61 ± 3.09 | C10H16N2O5 | 320 | 2.9 | 245.11320 | 245.11247 |
| Asterina-330 | 4.97 ± 0.57 | C12H20N2O6 | 330 | 1.8 | 289.13941 | 289.13840 | |
| Porphyra-334 | 18.04 ± 3.85 | C14H22N2O8 | 334 | 0.8 | 347.14489 | 347.14316 | |
| Shinorine | 49.20 ± 2.80 | C13H20N2O8 | 334 | 1.4 | 333.12924 | 333.12781 | |
| CC | Palythine-serine | 6.12 ± 1.42 | C11H18N2O6 | 320 | 3.8 | 275.12376 | 275. 12271 |
| Asterina-330 | 1.27 ± 0.41 | C12H20N2O6 | 330 | 1.8 | 289.13941 | 289.13840 | |
| Palythinol | 30.28 ± 1.74 | C13H22N2O6 | 332 | 0.9 | 303.15506 | 303.15399 | |
| Porphyra-334 | 5.36 ± 3.18 | C14H22N2O8 | 334 | 0.8 | 347.14489 | 347.14371 | |
| Shinorine | 37.05 ± 9.79 | C13H20N2O8 | 334 | 1.4 | 333.12924 | 333.12805 | |
| GL | Palythine | 1.70 ± 0.20 | C10H16N2O5 | 320 | 1.2 | 245.11320 | 245.11290 |
| Asterina-330 | 1.63 ± 0.45 | C12H20N2O6 | 330 | 1.8 | 289.13941 | 289.13849 | |
| Palythinol | 59.28 ± 9.52 | C13H22N2O6 | 332 | 0.9 | 303.15506 | 303.15421 | |
| Porphyra-334 | 79.83 ± 1.98 | C14H22N2O8 | 334 | 0.8 | 347.14489 | 347.14343 | |
| Shinorine | 3.77 ± 0.99 | C13H20N2O8 | 334 | 1.4 | 333.12924 | 333.12799 | |
| PL | Palythine | 6.26 ± 0.95 | C10H16N2O5 | 320 | 1.2 | 245.11320 | 245.11227 |
| Asterina-330 | 7.69 ± 0.80 | C12H20N2O6 | 330 | 1.8 | 289.13941 | 289.13821 | |
| Palythinol | 2.44 ± 0.16 | C13H22N2O6 | 332 | 0.9 | 303.15506 | 303.15411 |