Table 7.
Comparison of natural and adulterate wintergreen essential oil; “-” indicates not detected and “t” indicates trace (<0.01%).
| RRI | Compounds | Natural Wintergreen Oil a | Addition of Commercial Methyl Salicylate in Natural Wintergreen Oil (%) | |||
|---|---|---|---|---|---|---|
| 20 | 30 | 40 | 50 | |||
| 800 | n-Octane | t | t | t | t | t |
| 802 | Hexanal | t | t | t | t | t |
| 848 | (3Z)-Hexenol | 0.12 | 0.09 | 0.08 | 0.06 | 0.05 |
| 862 | 1-Hexanol | 0.07 | 0.05 | 0.04 | 0.03 | 0.03 |
| 900 | n-Nonane | t | t | t | t | t |
| 931 | α-Pinene | 0.03 | 0.02 | 0.02 | 0.01 | 0.01 |
| 948 | Camphene | t | t | t | t | t |
| 960 | Benzaldehyde | t | t | t | t | - |
| 972 | Phenol | - | 0.01 | 0.01 | 0.01 | 0.02 |
| 976 | β-Pinene | 0.01 | t | t | t | t |
| 988 | 2-Pentylfuran | - | - | t | - | - |
| 1005 | (3Z)-Hexenyl acetate | - | t | t | t | - |
| 1017 | 3-Methyl-1,2-cyclopentanedione | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 |
| 1023 | p-Cymene | 0.01 | 0.01 | t | t | t |
| 1027 | Limonene | 0.01 | t | t | t | t |
| 1029 | β-Phellandrene | - | - | - | - | t |
| 1031 | 1,8-Cineole | 0.03 | 0.02 | 0.02 | 0.01 | 0.01 |
| 1033 | Benzyl alcohol | - | 0.01 | 0.01 | t | t |
| 1067 | cis-Linalool oxide (furanoid) | t | t | - | - | - |
| 1069 | 1-Octanol | - | - | t | - | - |
| 1070 | cis-Sabinene hydrate | - | - | - | t | - |
| 1098 | Linalool | 0.05 | 0.04 | 0.03 | 0.03 | 0.02 |
| 1103 | Nonanal | t | t | t | t | t |
| 1196 | Methyl salicylate | 99.46 | 99.5 | 99.5 | 99.53 | 99.5 |
| 1217 | β-Cyclocitral | t | t | t | t | t |
| 1223 | Nerol | - | t | - | - | - |
| 1229 | (3Z)-Hexenyl 2-methylbutanoate | - | t | - | t | - |
| 1248 | Geraniol | 0.03 | 0.03 | 0.03 | 0.03 | 0.02 |
| 1260 | (2E)-Decenal | - | t | t | t | - |
| 1266 | Ethyl salicylate | 0.05 | 0.05 | 0.04 | 0.04 | 0.03 |
| 1281 | Vitispirane | 0.02 | 0.01 | 0.01 | 0.01 | 0.01 |
| 1299 | β-Dehydroelsholtzia ketone | 0.04 | 0.03 | 0.03 | 0.02 | 0.02 |
| 1315 | Methyl o-mercaptobenzoate | - | t | t | t | t |
| 1330 | Methyl o-anisate | - | t | t | 0.01 | 0.01 |
| 1348 | Eugenol | 0.02 | 0.02 | 0.02 | 0.01 | 0.01 |
| 1379 | Methyl p-mercaptobenzoate | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 |
| 1384 | β-Bourbonene | t | t | - | - | - |
| 1417 | β-Caryophyllene | 0.02 | 0.01 | 0.01 | 0.01 | 0.01 |
| 1431 | trans-α-Bergamotene | t | t | - | - | t |
| 1436 | Aromadendrene | t | t | t | - | - |
| 1448 | Methyl paraben | - | t | t | t | 0.01 |
| 1476 | (E)-β-Ionone | - | t | t | t | - |
| 1480 | Germacrene D | t | t | t | - | - |
| 1502 | (E,E)-α-Farnesene | - | t | - | - | - |
| 1505 | β-Bisabolene | t | t | - | t | - |
| 1516 | δ-Cadinene | - | t | - | - | - |
| 1568 | (3Z)-Hexenyl benzoate | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 |
| 1575 | Hexyl benzoate | t | t | - | - | - |
| 1604 | Dimethyl 2-hydroxyterephthalate | - | 0.07 | 0.12 | 0.16 | 0.21 |
| 1663 | (3Z)-Hexenyl salicylate | t | t | t | t | t |
| 1674 | Hexyl salicylate | - | t | - | - | - |
| 1864 | Benzyl salicylate | - | t | t | - | - |
| 2061 | Phenylethyl alcohol dimer | t | - | t | t | t |
a Source: Aromatic Plant Research Center (Lehi, UT, USA).