Table 6.
Antioxidant marine xanthone.
| Name | Activity | Source | Ref. |
|---|---|---|---|
| 1,4,7-Trihydroxy-6-methylxanthone (15) | DPPH (IC50 = 6.92 µg mL−1); ABTS (IC50 = 2.35 µg mL−1) |
Talaromyces islandicus (EN-501) isolated from Laurencia okamurai | [59] |
| 1,4,5-Trihydroxy-2-methylxanthone (16) | DPPH (IC50 = 1.23 µg mL−1); ABTS (IC50 = 1.27 µg mL−1) |
||
| Norlichexanthone (17) | DPPH (% Scavenging effect: 6.2% at 25.0 μg mL−1; 12.9% at 50 μg mL−1; 25.3% at 100 μg mL−1; 90.6% at 500 μg mL−1) | Enteromorpha sp. collected at Fehmarn Island | [81] |
| 2,3,6,8-Tetrahydroxy-1-methylxanthone (28) | DPPH (% Scavenging effect: 94.7% at 25.0 μg mL−1; 94.8% at 50 μg mL−1; 95.2% at 100 μg mL−1; 95.4% at 500 μg mL−1) Linolenic acid peroxidation (% Inhibition: 17.0% at 7.4 μg mL−1; 37.0% at 37 μg mL−1) |
||
| Arthone C (43) | DPPH (IC50 = 16.9 µM); ABTS (IC50 = 18.7 µM) |
Arthrinium sp. (UJNMF0008) | [97] |
| 2,3,4,6,8-Pentahydroxy-1-methylxanthone (44) | DPPH (IC50 = 22.1 µM); ABTS (IC50 = 18.0 µM) |
||
| Sterigmatocystin (81) | ABTS (0.65 ± 0.13 TEAC values) | Aspergillus versicolor (A-21-2-7) isolated from sediment collected in the South China Sea | [98] |
| Oxisterigmatocystin C (93) | ABTS (1.16 ± 0.18 TEAC values) | ||
| Oxisterigmatocystin D (120) | ABTS (0.55 ± 0.13 TEAC values) |
ABTS: (2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)); DPPH: (2,2-diphenyl-1-picryl-hydrazyl-hydrate); IC50: Half maximal inhibitory concentration; TEAC: Trolox equivalents antioxidant capacity.