Table 1.
Concentrations (µg/g) of minor lipids in monocultivar protected designation of origin (PDO) and commercially-blended extra virgin olive oils obtained by LC-ESI-MS/MS analysis. An asterisk (*) in a row represents significant differences between mean values at p < 0.05 obtained by ANOVA and least significant difference (LSD) test.
| Minor Lipids | Origin/Class | |
|---|---|---|
| Monocultivar PDO | Commercially-Blended | |
| Free fatty acids | ||
| Palmitic acid (C16:0) | 285.41 | 362.95 |
| Palmitoleic acid (C16:1) | 10.58 | 16.57 |
| Stearic acid (C18:0) | 27.41 | 43.39 |
| Oleic acid (C18:1) | 809.53 | 1045.52 |
| Linoleic acid (C18:2) | 70.52 | 93.10 |
| Linolenic acid (C18:3) | 5.67 | 9.76 * |
| Arachidic acid (C20:0) | 8.53 | 11.42 |
| Behenic acid (C22:0) | 8.52 | 9.45 |
| Erucic acid (C22:1) | 0.06 | 0.05 |
| Lignoceric acid (C24:0) | 21.85 | 27.04 |
| Total free fatty acids | 1248.09 | 1619.27 |
| Free fatty acid esters | ||
| Methyl oleate | 4.02 | 7.09 * |
| Methyl linoleate | 0.05 | 0.24 * |
| Ethyl palmitate | 0.10 | 1.01 * |
| Ethyl stearate | 0.00 | 0.32 * |
| Ethyl oleate | 2.29 | 8.18 * |
| Ethyl linoleate | 0.38 | 1.04 * |
| Total free fatty acid esters | 6.83 | 17.87 * |
| Monoglycerides | ||
| 1-Oleoyl-rac-glycerol | 30.11 | 53.29 * |
| 1-Linoleoyl-rac-glycerol | 8.77 | 12.84 * |
| Total monoglycerides | 38.88 | 66.13 * |
| Triterpenoids | ||
| Oleanolic acid | 26.71 | 50.13 * |
| Uvaol | 4.58 | 14.04 * |
| Total triterpenoids | 31.28 | 64.17 * |