Constituent · Sesquiterpene hydrocarbon
α-trans-bergamotene
α-trans-bergamotene is a sesquiterpene hydrocarbon — a heavier, woody or spicy base-note compound that lingers longer than the light terpenes. Across our dataset it was measured in 11 oils (41 samples), concentrating most in Helichrysum, Basil, Lime.
Essential oils richest in α-trans-bergamotene
Measured relative composition (GC peak-area %) pooled across published GC-MS samples — median, typical range (middle 50%) and the maximum seen.
| Oil | Median | Typical range | Max | Samples |
|---|---|---|---|---|
| Helichrysum | 4.2% | 4.2%–4.2% | 4.2% | 1 |
| Basil | 1.98% | 1.83%–2.7% | 4.2% | 5 |
| Lime | 0.8% | 0.8%–0.8% | 0.8% | 1 |
| Carrot seed | 0.78% | 0.63%–0.94% | 1.09% | 2 |
| Lavender | 0.7% | 0.12%–0.81% | 1.35% | 22 |
| Lemongrass | 0.66% | 0.66%–0.66% | 0.66% | 1 |
| Cinnamon bark | 0.57% | 0.57%–0.57% | 0.57% | 1 |
| Lemon | 0.44% | 0.37%–0.52% | 0.6% | 2 |
| Tarragon | 0.11% | 0.09%–0.12% | 0.12% | 3 |
| Mountain savory | 0.1% | 0.1%–0.1% | 0.1% | 1 |
| Oregano | 0.1% | 0.1%–0.1% | 0.1% | 2 |
Oils in our library are linked above — open any profile for its full composition, safety panel and the research behind it.
Related constituents
Other sesquiterpene hydrocarbon compounds across the oils.
Figures are GC peak-area percentages pooled across published GC-MS samples, not concentrations, and describe chemistry — not health effects. How this is built →