Table 2.
Fatty acid composition of glyceride oils isolated from Centaurea thracica.
| Fatty Acids % | Inflorescences | Seeds | ||
|---|---|---|---|---|
| June | September | |||
| C 4:0 | butyric | 3.4 ± 0.2 * | - ** | - |
| C 6:0 | caproic | 3.1 ± 0.1 | 0.7 ± 0.2 | - |
| C 8:0 | caprylic | - | 0.1 ± 0.0 | 0.2 ± 0.02 |
| C 10:0 | capric | - | 0.2 ± 0.05 | 0.1 ± 0.0 |
| C 12:0 | lauric | 2.9 ± 0.2 | 1.1 ± 0.1 | 0.1 ± 0.0 |
| C 14:0 | myristic | 2.5 ± 0.1 | 2.5 ± 0.15 | 0.2 ± 0.05 |
| C 14:1 | myristoleic | 0.5 ± 0.1 | 0.8 ± 0.2 | 0.1 ± 0.0 |
| C 15:0 | pentadecanoic | 1.0 ± 0.2 | 0.4 ± 0.1 | 0.2 ± 0.05 |
| C 15:1 | pentadecenoic | 0.5 ± 0.1 | 0.1 ± 0.0 | - |
| C 16:0 | palmitic | 32.6 ± 0.5 | 21.6 ± 0.6 | 36.2 ± 0.2 |
| C 16:1 | palmitoleic | 3.8 ± 0.1 | 11.7 ± 0.2 | - |
| C 17:0 | heptadecanoic | 0.9 ± 0.1 | 0.5 ± 0.06 | 0.3 ± 0.05 |
| C 17:1 | heptadecenoic | 0.8 ± 0.1 | 0.5 ± 0.1 | 0.3 ± 0.0 |
| C 18:0 | stearic | 4.9 ± 0.3 | 4.5 ± 0.2 | 3.7 ± 0.4 |
| C 18:1 | oleic | 13.7 ± 0.5 | 30.9 ± 0.7 | 53.0 ± 0.5 |
| C 18:2 (n-6) | linoleic | 13.8 ± 0.4 | 20.3 ± 0.3 | 1.4 ± 0.2 |
| C 18:3 (n-3) | linolenic | 3.6 ± 0.3 | 0.7 ± 0.1 | 1.1 ± 0.1 |
| C 20:0 | arachidic | 3.5 ± 0.5 | 0.2 ± 0.05 | - |
| C 20:1 | gadoleic | 0.4 ± 0.1 | 0.1 ± 0.0 | - |
| C 20:2 (n-6) | eicosadienoic | 0.5 ± 0.2 | 0.2 ± 0.05 | 0.4 ± 0.1 |
| C 22:0 | behenic | 2.9 ± 0.3 | 1.5 ± 0.1 | 0.5 ± 0.1 |
| C 22:1 | erucic | 0.3 ± 0.1 | - | - |
| C 22:2 (n-6) | docosadienoic | - | - | 0.7 ± 0.1 |
| C 20:5 (n-3) | eicosapentaenoic | - | - | 0.1 ± 0.0 |
| C 23:0 | tricosanoic | 1.0 ± 0.2 | 0.4 ± 0.1 | - |
| C 24:0 | lignoceric | 2.8 ± 0.4 | 1.0 ± 0.2 | 0.2 ± 0.1 |
| C 24:1 | nervonic | - | - | 0.2 ± 0.05 |
| C 22:6 (n-3) | docosahexaenoic | 0.6 ± 0.1 | 0.1 ± 0.0 | 1.0 ± 0.2 |
| Σ n-6 | 14.3 | 20.5 | 2.5 | |
| Σ n-3 | 4.2 | 0.8 | 2.2 | |
| Ratio of n-6/n-3 | 3.4 | 26.6 | 1.14 | |
| Iodine value, g I2/100 g | 47.2 | 66.5 | 53.2 | |
* The samples were analyzed in triplicate (n = 3), and the results are expressed as mean and standard deviation. **—not detected, Limit of detection is 0.02%, Limit of Quantitation is 0.05%.