TABLE 3.
Carotenoids in E. ramosum (in order of polarity)a
| No. | Carotenoid | Common name | Chemical formula |
|---|---|---|---|
| 1 | β,β-Carotene | β-Carotene | C40H56 |
| 2 | 1,1′-Dimethoxy-3,4,3′4′-tetradehydro-1,2,1′,2′-tetrahydro-ψ,ψ-carotene | Spirilloxanthin | C42H60O2 |
| 3 | 3-Hydroxy-1′-methoxy-3′,4′-didehydro-1′,2′-dehydro-β,ψ-caroten-19′-al | Bacteriorubixanthinal | C41H56O3 |
| 4 | 3,3′-Dihydroxy-β,β-carotene | Zeaxanthin | C40H56O2 |
| 5 | 3,3′-Dihydroxy-β,β-carotene-4-one | Adonixanthin | C40H54O3 |
| 6 | 2,3,3′-Trihydroxy-β,β-carotene | Caloxanthin | C40H56O3 |
| 7 | 3,2′,3′-Trihydroxy-β,β-carotene-4-one (probable structure) | None | C40H54O4 |
| 8 | 2,3,2′,3′-Tetrahydroxy-β,β-carotene | Nostoxanthin | C40H56O4 |
| 9 | 2,3,2′,3′-Tetrahydroxy-β,β-carotene-4-one | None | C40H54O5 |
| 10 | 3,2′,3′-Trihydroxy-β,β-carotene-4-one-3-sulfate | Erythroxanthin sulfate | C40H54O7S |
a
Modified from reference 211.