Table 2 Influence of HS-SPME parameters (temperature extraction, equilibrium and extraction times) on the volatiles of Daucus crinitus Desf
HS-SPME parameters | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Equilibrium time teq min | Extraction time text min | Extraction Temperature Text°C | ||||||||
(Text = 70°C - text = 15 min) | (Text = 70°C - teq = 60 min) | (text = 30 min - teq = 60 min) | ||||||||
Class of compounds | 20 | 40 | 60 | 80 | 30 | 45 | 30 | 50 | 70 | 90 |
Hydrocarbon compounds | 37.6 | 58.8 | 53.8 | 49.1 | 69.3 | 52.3 | 85.9 | 76.3 | 69.3 | 62.0 |
Oxygenated compounds | 56.8 | 37.8 | 44.8 | 47.6 | 30.1 | 38.1 | 11.3 | 22.5 | 30.1 | 36.1 |
Aliphatic compounds | 74.6 | 69.3 | 78.4 | 72.2 | 80.2 | 67.2 | 74.8 | 79.3 | 80.2 | 76.1 |
Phenylpropanoid compounds | 2.0 | 3.2 | 1.2 | 2.9 | 0.6 | 2.5 | 0.1 | 0.3 | 0.6 | 0.9 |
Hydrocarbon non-terpenic compounds | 23.5 | 37.5 | 39.8 | 29.9 | 54.8 | 33.8 | 67.4 | 59.5 | 54.8 | 45.1 |
Hydrocarbon monoterpenes | 11.9 | 17.2 | 13.1 | 17.6 | 6.7 | 12.1 | 19.3 | 12.6 | 6.7 | 4.1 |
Hydrocarbon sesquiterpenes | 2.2 | 4.0 | 0.6 | 1.5 | 7.6 | 6.3 | 0.8 | 4.2 | 7.6 | 12.5 |
Hydrocarbon diterpenes | - | 0.1 | 0.3 | 0.1 | 0.2 | 0.1 | - | - | 0.2 | 0.3 |
Oxygenated non-terpenic compounds | 52.9 | 35.0 | 39.8 | 45.2 | 26.0 | 35.9 | 9.1 | 20.1 | 26.0 | 31.9 |
Oxygenated monoterpenes | 3.8 | 2.8 | 4.9 | 2.3 | 1.0 | 2.1 | 2.2 | 2.2 | 1.0 | 0.5 |
Oxygenated sesquiterpenes | 0.1 | - | 0.1 | 0.1 | 3.1 | 0.1 | - | 0.2 | 3.1 | 3.7 |
Esters | 4.9 | 5.4 | 5.4 | 7.0 | 9.9 | 4.5 | 3.2 | 8.6 | 9.9 | 12.8 |
Alcohols | 4.2 | 2.8 | 3.9 | 2.2 | 4.4 | 29.0 | 1.9 | 3.2 | 4.4 | 7.3 |
Ketones | 0.7 | 0.1 | 0.6 | 0.2 | 0.4 | 0.3 | 0.1 | 0.2 | 0.4 | 0.2 |
Aldehydes | 43.0 | 25.4 | 28.0 | 35.3 | 10.2 | 25.6 | 3.2 | 8.5 | 10.2 | 11.2 |
Total identification (%) | 94.6 | 96.6 | 98.6 | 96.7 | 99.4 | 90.4 | 97.2 | 98.8 | 99.4 | 98.1 |
Total area 105 a | 223.2 | 282.8 | 351.0 | 303.1 | 454.1 | 426.4 | 96.8 | 206.4 | 454.1 | 451.2 |