Table 2.
Peak n° | Retention time (minutes) | Correlation coefficients (r) |
||
---|---|---|---|---|
233–254 | 233–285 | 254–285 | ||
1 | 6.42 ± 0.01 | 0.743a | 0.580b | 0.899 |
2 | 7.16 ± 0.01 | 0.860 | -0.953 | -0.565 |
3 | 10.09 ± 0.01 | 0.508 | 0.992 | 0.436 |
4 | 13.79 ± 0.01 | 0.953 | 0.988 | 0.945 |
5 | 17.98 ± 0.01 | 0.623 | 0.947 | 0.728 |
6 | 19.13 ± 0.06 | 0.998 | 0.994 | 0.995 |
7 | 23.72 ± 0.01 | 0.997 | 0.994 | 0.999 |
ar-values below 0.9 are in bold numbers. bUnderlined r compare peaks considered to correspond to different compounds. Organic extracts from three different cultures of A. dauci AUS001, FRA001, FRA017, and ITA002 strains and the A. brassicicola Abra 43 strain were analyzed using HPLC-DAD. Seven major peaks were selected for area under a curve statistical analysis. For each peak, retention time (RT) and AUC were measured for three light wavelengths: 233, 254, and 285 nm. Correlation coefficients (r) were computed for each wavelength pair. Each peak was considered to correspond to a single molecule when r was above 0.9.