Table 1.
Summary of n-alkanes presence in extra virgin olive oils, olive oils and refined olive oils.
| Sample | Variety | Geographical Origin | Sample Number | Tot. n-Alkane (mg/kg) | Major n-Alkanes | Ref. |
|---|---|---|---|---|---|---|
| Olive oil and Extra virgin olive oil | 6 | 28–99 | n-C23, n-C25, n-C27 | [24] | ||
| Virgin olive oil | Arbequina, Cornicabra, Empeltre, Farga, Hojiblanca, Lechin, Picual, Picudo, Verdial | Various Spanish regions | 250 | 15.3–115.8 | n-C25, n-C23, n-C27 | [25] |
| Refined virgin olive oil | 2 | 20.9 | n-C27, n-C29, n-C31 | |||
| 14.7 | n-C29, n-C27, n-C31 | |||||
| Virgin olive oil | Arbequina | Lèrida | 50 | 36–60 | n-C27, n-C25, n-C29 | [26] |
| Carnicabra | Toledo | 26–43 | n-C29, n-C27, n-C31 | |||
| Empeltre | Teruel | 72–92 | n-C25, n-C23, n-C29 | |||
| Hojiblanca | Màlaga/Còrdoba | 20–53 | n-C27, n-C29, n-C25 | |||
| Picual | Jaen | 18–31 | n-C27, n-C29, n-C25 | |||
| Virgin olive oil | Debela | Krk island (Croatia) | 31 | n-C29, n-C27, n-C31 | [27] | |
| Naska | 104 | n-C25, n-C23, n-C24 | ||||
| Rosulja | 42 | n-C29, n-C25, n-C27 | ||||
| Slatka | 40 | n-C29, n-C27, n-C25 | ||||
| Extra virgin olive oil | Various origin | 20 | 71.6 | [5] | ||
| Refined olive oil | Various origin | 20 | 36.2 | |||
| Virgin olive oil | Various origin | 30 | 30.5–176.2 | n-C23, n-C25, n-C27, n-C29 | [2] | |
| Virgin olive oil | Bjelica | Istria (Croatia) | 40 | 13.7−26.4 | n-C29, n-C25, n-C27 | [11] |
| Buza | 28.0−62.3 | n-C25, n-C23, n-C24 | ||||
| Leccino | 27.0− 80.4 | n-C25, n-C23, n-C24 | ||||
| Olive oil | Meski | Bzerte (North-East Tunisia) | 90.9 ± 22.7 | n-C25, n-C27, n-C23 | [23] | |
| Virgin olive oil | Frantoio, Leccino, Maraiolo | Ciggiano, Italia | 8 | At early ripening n-C29 and n-C31;At late ripening n-C25, n-C27, n-C29 | [28] | |
| Olive oil | 4 | n-C27, n-C25, n-C29 | [3] | |||
| Extra virgin olive oil | Bianchera istriana, Leccino, Frantoio | Koper (Slovenia) | 3 | 62.7 ± 4.5 | n-C29, n-C25, n-C27 | [12] |
| Buza | Vodnjan (Croatia) | 4 | 96.7 ± 12.8 | n-C25, n-C23, n-C29 | ||
| Salonenque, Aglandau, Grossane, Verdale, Altre, Calian, Petit ribier, Coratina | Provence-Alpes-Côte d’Azur (France) | 15 | 66.8 ± 10.6 | n-C25, n-C29, n-C27 | ||
| Leccino, Frantoio, Grignano, Perlarola | Veneto (North Italy) | 4 | 81.3 ± 13.3 | n-C25, n-C27, n-C23 | ||
| Frantoio, Moraiolo, Leccino, San Felice, Caninese, Itrana | Tuscany, Laizo, Umbria (Central Italy) | 14 | 115.6 ± 12.1 | n-C25, n-C29, n-C27 | ||
| Ogliarola Precoce, Nocellara del Belice, Biancolilla, Tonda Iblea | Apulia (South Italy) | 7 | 96.2 ± 22.0 | n-C25, n-C23, n-C29 | ||
| Cobrancosa, Madural, Arbequina, Verdeal transmontana, Galega vulgar | Portugal | 5 | 73.9 ± 12.5 | n-C29, n-C27, n-C25 | ||
| Chalkidiki | Central Macedonia (North Greece) | 8 | 35.6 ± 3.5 | n-C25, n-C27, n-C29 | ||
| Koroneiki | Peloponnese (South Greece) | 6 | 67.8 ± 5.2 | n-C23, n-C25, n-C27 | ||
| Picual | Jean (Spain) | 6 | 40.1 ± 7.1 | n-C29, n-C27, n-C25 | ||
| Picholine marocaine | Meknes, El Hajeb (Marocco) | 4 | 78.0 ± 11.6 | n-C23, n-C25, n-C27 |