| Oil sample type B | Oleaceae | Olea europaea L. | 3 | Metabolites |
| Oil sample type C | Oleaceae | Olea europaea L. | 3 | Metabolites |
| Oil sample type D | Oleaceae | Olea europaea L. | 3 | Metabolites |
| Olive oil experimental mixture A | Oleaceae | Olea europaea L. | 3 | Metabolites |
| Olive oil experimental mixture B | Oleaceae | Olea europaea L. | 3 | Metabolites |
| Olive oil experimental mixture C | Oleaceae | Olea europaea L. | 3 | Metabolites |
| Olive oil experimental mixture D | Oleaceae | Olea europaea L. | 3 | Metabolites |
| Olive, mill water, extract | Oleaceae | Olea europaea L. | 1 | Metabolites |
| Olive, oil, extra virgin | Oleaceae | Olea europaea L. | 4 | Metabolites |
| Olive, oil, virgin | Oleaceae | Olea europaea L. | 12 | Metabolites |
| Onion [Unknown color], fried | Alliaceae | Allium cepa L. var. cepa | 7 | Metabolites |
| Orange [Blond] | Rutaceae | Citrus sinensis L. | 6 | Metabolites |
| Orange [Blond], juice | Rutaceae | Citrus sinensis L. Osbeck | 8 | Metabolites |
| Orange [Blond], juice from concentrate | Rutaceae | Citrus sinensis L. | 2 | Metabolites |
| Orange [Blond], juice, hesperidinase-treated | Rutaceae | Citrus sinensis L | 1 | Metabolites |
| Orange [Blond], pure juice | Rutaceae | Citrus sinensis L. | 8 | Metabolites |
| Orange [Blond], pure juice, alpha rhamnosidase-treated | Rutaceae | Citrus sinensis L | 8 | Metabolites |
| Orange [Blond], pure juice, fortified with hesperidin | Rutaceae | Citrus sinensis L | 17 | Metabolites |
| Orange [Blood], juice extract | | | 1 | Metabolites |
| Orange [Blood], juice, double concentrate | | | 3 | Metabolites |
| Orange [Blood], juice, freeze-dried | | | 2 | Metabolites |
| Orange [Blood], pure juice | Rutaceae | Citrus sinensis | 9 | Metabolites |
| Perilla frutescens tablet | | | 5 | Metabolites |
| Polygonum cuspidatum, extract | | | 1 | Metabolites |
| Pomegranate, extract | Lythraceae | Punica granatum L. | 2 | Metabolites |