Table 1.
Peak capacity (nc), selectivity (α), retention factor (k), and resolution (Rs), calculated for the EVOO hydrophilic phenolic extract, for the peak pairs HT–T (hidroxytyrosol–tyrosol) and OAIa–OAIb (oleuropein aglycone isomers “a” and “b”), for the three studied columns (Kinetex biphenyl, LiChrospher C18, and Spherisorb C18).
| Column | nc | α | k | Rs | ||
|---|---|---|---|---|---|---|
| HT–T | OAIa–OAIb | HT | HT–T | OAa–OAb | ||
| Kinetex biphenyl | 277 | 1.43 | 1.045 | 1.46 | 5.60 | 2.68 |
| LiChrospher C18 | 192 | 1.38 | 1.024 | 1.81 | 5.39 | 1.12 |
| Spherisorb C18 | 179 | 1.37 | 1.0 | 1.94 | 3.91 | 0 |