Table 3.
Chemical composition of the essential oil from the stem bark and leaves of I. laurina in the rainy season.
| Compound | AI Reference | AI Calculated | Composition % TIC | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Stem bark | Leaves | ||||||||
| 4-Methyhexan-3-one | - | 840 | 1.19 | - | |||||
| ( Z)-Hex-3-en-1-ol | 853 a | 856 | - | 9.59 | |||||
| Hexan-1-ol * | 863 b | 868 | - | 0.70 | |||||
| N.I. | - | 979 | 1.21 | - | |||||
| N.I. | - | 1001 | 1.18 | - | |||||
| Linalool * | 1100 a | 1105 | 2.69 | - | |||||
| Oxygenated monoterpenes | - | 1140 | 7.80 | - | |||||
| 3-Hexenyl butanoate | 1184 b | 1188 | - | 0.59 | |||||
| ( Z)-Hex-3-enyl hexanoate | 1378 b | 1383 | - | 0.37 | |||||
| Eremophylene | 1464 a | 1467 | 1.51 | - | |||||
| 9-epi-( E)-Caryophyllene | 1468 a | 1473 | 1.36 | - | |||||
| Sesquiterpene | - | 1491 | 1.40 | - | |||||
| ( E)-Nerolidol * | 1564 a | 1568 | - | 0.28 | |||||
| Dodecanoic acid (lauric acid) * | 1568 b | 1575 | 5.80 | 0.43 | |||||
| Tetradecanal | 1611 b | 1611 | 0.94 | - | |||||
| Oxygenated sesquiterpene | - | 1637 | 1.27 | - | |||||
| N.I. | - | 1644 | 1.29 | - | |||||
| N.I. | - | 1668 | 1.83 | - | |||||
| Heptadec-8-ene | 1677 a | 1678 | 3.48 | - | |||||
| Heptadecane * | 1700 b | 1700 | 1.68 | - | |||||
| Oxygenated sesquiterpene | - | 1706 | 1.59 | - | |||||
| Oxygenated sesquiterpene | - | 1713 | 2.01 | - | |||||
| N.I. | - | 1714 | - | 0.43 | |||||
| Oxygenated sesquiterpene | - | 1746 | 5.61 | - | |||||
| Tetradecanoic acid (myristic acid) * | 1775 a | 1771 | 4.06 | 0.32 | |||||
| Hexahydrofarnesyl acetone (phytone) | 1843 a | 1846 | 1.99 | 0.61 | |||||
| Hexadecanol | 1874 b | 1883 | 2.15 | 0.37 | |||||
| 3,3,5-Trimethylcyclohexyl salicylate (homosalate) | - | 1891 | 3.87 | - | |||||
| N.I. | - | 1919 | - | 0.99 | |||||
| N.I. | - | 1941 | 1.16 | - | |||||
| Isophytol | 1946 b | 1947 | - | 0.35 | |||||
| Hexadec-9-enoic acid (palmitoleic acid) | 1957 c | 1948 | 1.58 | - | |||||
| N.I. | - | 1962 | 1.04 | - | |||||
| Hexadecanoic acid (palmitic acid) * | 1970 a | 1972 | 25.40 | 15.20 | |||||
| N.I. | - | 2082 | - | 0.87 | |||||
| N.I. | - | 2099 | - | 0.80 | |||||
| Phytol * | 2114 a | 2116 | 1.39 | 33.21 | |||||
| (9 Z,12Z)-Octadeca-9,12-dienoic acid (linoleic acid) * | 2132 b | 2140 | 3.58 | 1.19 | |||||
| ( Z)-Octadec-9-enoic acid (oleic acid) * | 2141 b | 2144 | 5.52 | 2.33 | |||||
| N.I. | - | 2149 | - | 1.28 | |||||
| Octadecanoic acid (stearic acid) * | 2170 a | 2169 | 0.90 | 2.25 | |||||
| Tricosane * | 2300 b | 2300 | - | 0.43 | |||||
| Pentacosane * | 2500 b | 2500 | 0.89 | - | |||||
| Heptacosane * | 2700 b | 2700 | 0.69 | 3.33 | |||||
| Octacosane * | 2800 b | 2800 | - | 1.33 | |||||
| Nonacosane * | 2900 b | 2900 | - | 21.95 | |||||
| Triacontane * | 3000 b | 3000 | 0.95 | - | |||||
| Total (%) | 99.01 | 99.20 | |||||||
N.I. = not identified; TIC = total ions chromatogram; AI = arithmetic index; * compound was injected and added to our library of standards. a NIST: Standard Reference Data [24]. b Adams mass spectral-retention index library [25]. c The Pherobase: Database of insect pheromones and semiochemicals [27].