Table 3.
Mass (ng) of essential oil (EO) volatiles per mg of inclusion complex ± standard error (SE) released at 0, 3, 6, 9, 18, and 24 h. Inclusion complexes were stored on a watch glass at 10–20% humidity and room temperature for the indicated times. Volatiles released by 10 mg (lemongrass (LG) and geranium Egyptian (GE)) or 5 mg (lemon eucalyptus (LE)) of inclusion complexes in 20 mL vial were analyzed by SPME/GC-MS and quantified using liquid standard curves of respective essential oil in hexanes.
| Treatment | EO Volatiles (ng/mg ± SE) | |||||||
|---|---|---|---|---|---|---|---|---|
| 0 H | 3 H | 6 H | 9 H | 18 H | 24 H | t | p | |
| LG-1 | 0.40 ± 0.10 | 0.44 ± 0.06 | 0.39 ± 0.01 | 0.47 ± 0.09 * | 0.75 ± 0.02 | 0.41 ± 0.10 | - | - |
| LG-2 | 0.83 ± 0.26 | 0.31 ± 0.06 | 0.31 ± 0.12 | 0.44 ±0.11 | 0.71 ± 0.08 | 0.47 ± 0.04 | 0.11 | 1.0 |
| LE-1 | 189 ± 9 | 16.8 ± 0.8 | 10.9 ± 0.7 | 10 ± 1 | 8.2 ± 0.4 | 7.8 ± 0.8 | - | - |
| LE-2 | 14 ± 3 | 7.8 ± 0.1 | 6.7 ± 0.1 | 6.1 ± 0.4 | 6.0 ± 0.3 | 6.3 ± 0.2 | −43.4 | <0.001 |
| GE-1 | 0.4 ± 0.1 | 0.20 ± 0.04 | 0.20 ± 0.05 | 0.13 ± 0.05 | 0.09 ± 0.02 | 0.08 ± 0.04 | - | - |
| GE-2 | 5.2± 0.2 | 3.3 ± 0.4 | 2.3 ± 0.6 | 0.76 ± 0.08 | 1.3 ± 0.2 | 1.1 ± 0.1 | 1.2 | 0.8 |
* Value calculated from the average of two measurements.