Table 1.
The main volatiles of P. armeniaca (P1–P3) and P. domestica (P4–P6) leaves essential oils.
| Compound | RI a | Relative Amount (%) | |||||
|---|---|---|---|---|---|---|---|
| P1 | P2 | P3 | P4 | P5 | P6 | ||
| (E)-2-Hexenal | 854 | 3.54 ± 0.21 | 4.44 ± 0.42 | 4.87 ± 0.40 | - | - | - |
| α-Pinene | 938 | 0.64 ± 0.01 | 0.58 ± 0.02 | 0.42 ± 0.06 | 0.23 ± 0.02 | 0.18 ± 0.01 | 0.16 ± 0.01 |
| Benzaldehyde | 963 | - | - | - | 5.66 ± 0.3 | 5.06 ± 0.20 | 4.32 ± 0.12 |
| β-Pinene | 980 | 0.76 ± 0.02 | 0.77 ± 0.02 | 0.65 ± 0.01 | tr | tr | tr |
| Limonene | 1030 | 2.54 ± 0.03 | 2.44 ± 0.02 | 2.87 ± 0.05 | - | - | - |
| Linalool | 1098 | 4.54 ± 0.01 | 4.44 ± 0.05 | 4.81 ± 0.02 | - | - | - |
| p-Mentha-2,4(8)-diene | 1142 | - | - | - | tr | tr | 2.01 ± 0.32 |
| trans-Caryophyllene | 1415 | 0.20 ± 0.01 | 0.18 ± 0.02 | 0.15 ± 0.01 | 0.13 ± 0.01 | 0.15 ± 0.02 | 0.16 ± 0.03 |
| trans-β-Farnesene | 1441 | - | - | - | tr | tr | 2.13 ± 0.22 |
| (E)-β-Ionone | 1484 | 1.22 ± 0.11 | 1.12 ± 0.1 | 1.14 ± 0.50 | - | - | - |
| γ-Cadinene | 1515 | 4.76 ± 0.80 | 0.67 ± 0.03 | 0.70 ± 0.02 | 0.71 ± 0.04 | tr | tr |
| δ-Cadinene | 1526 | 4.73 ± 0.75 | 0.78 ± 0.07 | 0.56 ± 0.03 | 0.42 ± 0.02 | tr | tr |
| Tetradecanoic acid | 1768 | - | - | - | 1.52 ± 0.5 | 1.45 ± 0.14 | 1.40 ± 0.22 |
| (Z)-Phytol | 1950 | 19.92 ± 1.52 | 19.88 ± 2.1 | 19.42 ± 1.84 | 25.83 ± 2.6 | 12.81 ± 1.4 | 9.36 ± 1.10 |
| Hexadecanoic acid | 1969 | - | - | - | 7.67 ± 0.84 | 7.58 ± 1.23 | 6.33 ± 1.20 |
| Manoyl oxide | 1989 | 6.53 ± 1.10 | 5.45 ± 1.13 | 5.21 ± 1.23 | - | - | - |
| Tricosane | 2300 | 2.30 ± 0.34 | 2.30 ± 0.55 | 2.39 ± 0.42 | 6.14 ± 0.02 | 6.33 ± 0.20 | 8.55 ± 0.92 |
| Tetracosane | 2400 | 1.97 ± 0.21 | 2.02 ± 0.11 | 2.06 ± 0.20 | 9.13 ± 1.6 | 8.88 ± 0.02 | 4.82 ± 0.94 |
| Pentacosane | 2500 | 7.39 ± 0.64 | 2.28 ± 0.20 | 3.93 ± 0.31 | 16.83 ± 1.3 | 16.30 ± 0.02 | 15.78 ± 1.7 |
| Heptacosane | 2700 | 10.14 ± 1.21 | 10.45 ± 1.7 | 11.61 ± 1.45 | 8.94 ± 0.20 | 4.58 ± 0.40 | 3.99 ± 0.23 |
| Nonacosane | 2900 | 21.76 ± 1.53 | 21.25 ± 1.1 | 21.11 ± 1.42 | 11.08 ± 1.60 | 3.86 ± 0.63 | 3.68 ± 0.42 |
| Triacontane | 3000 | - | - | - | 2.21 ± 0.26 | 2.11 ± 0.52 | 5.06 ± 0.71 |
| Entriacontane | 3100 | - | - | - | - | - | 4.06 ± 0.31 |
P1 and P4: essential oils from leaves collected in June; P2 and P5: essential oils from leaves collected in July; P3 and P6: essential oils from leaves collected in August. RI: Retention index. Data are reported as mean ± standard deviation (n = 3). a Retention indices on HP 5MS column; Compounds identification: comparison of retention times, comparison of mass spectra with mass spectrometry libraries, comparison with authentic compounds; tr: trace (<0.1%). -: not detected.