Table 2.
Concentrations of dihydro-DTX1 and PTX2 in methanolic extracts from the intracellular and extracellular fractions of two cultures of D. norvegica isolated from the Gulf of Maine in 2018, as measured by LC-MS/MS. OA, DTX1, and DTX2 were also analyzed, but were not detected.
| Isolate | dihydro-DTX1 (ppb) | PTX2 (ppb) | ||||||
|---|---|---|---|---|---|---|---|---|
| Intracellular | Extracellular | Intracellular | Extracellular | |||||
| Free | Esterified | Total | Free | Esterified | Total | |||
| DNBH-FB4 | 1 | 60.6 | 61.5 | 1.3 | 5.3 | 6.5 | 36.3 | 3.9 |
| DNBH-B3F | 0.5 | 43.1 | 43.6 | 1.4 | 7.1 | 8.5 | 26.5 | 2.5 |