Table 3.
Glycidyl ester recovery from four oil samples
| Sample/fortification level | Glycidyl laurate | Glycidyl myristate | Glycidyl palmitate | Glycidyl stearate | Glycidyl oleate | Glycidyl linoleate | Glycidyl linolenate | |
|---|---|---|---|---|---|---|---|---|
| Sample conc./recovery | ||||||||
| LOQ (ng/g) | 200 | 200 | 200 | 600 | 300 | 200 | 300 | |
| RBWD canola | ||||||||
| Sample conc. (ng/g) | <LOQ | <LOQ | <LOQ | <LOQ | 1,284 | 658 | <LOQ | |
| 1× LOQ | ||||||||
| Mean (%) | 116.2 | 120.3 | 94.6 | 87.3 | 111.3 | 105.5 | 100.2 | |
| Std dev (%) | 2.4 | 2.3 | 1.4 | 3.9 | 21.1 | 11.7 | 11.9 | |
| 2× LOQ | ||||||||
| Mean (%) | 107.1 | 104.8 | 97.4 | 96.5 | 102.0 | 96.0 | 106.2 | |
| Std dev (%) | 3.0 | 4.8 | 3.9 | 5.8 | 3.6 | 2.2 | 1.3 | |
| 4× LOQ | ||||||||
| Mean (%) | 103.9 | 102.3 | 92.1 | 101.6 | 97.8 | 98.2 | 103.9 | |
| Std dev (%) | 3.1 | 1.5 | 2.5 | 3.6 | 4.6 | 3.7 | 5.2 | |
| RB soy | ||||||||
| Sample conc. (ng/g) | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ | 280 | <LOQ | |
| 1× LOQ | ||||||||
| Mean (%) | 119.5 | 114.1 | 96.0 | 87.9 | 95.6 | 97.2 | 125.8 | |
| Std dev (%) | 0.4 | 2.5 | 9.6 | 8.4 | 4.4 | 4.2 | 6.4 | |
| 2× LOQ | ||||||||
| Mean (%) | 112.1 | 105.7 | 94.4 | 96.6 | 99.9 | 101.6 | 121.0 | |
| Std dev (%) | 6.4 | 4.0 | 3.3 | 2.8 | 3.0 | 3.0 | 7.0 | |
| 4× LOQ | ||||||||
| Mean (%) | 103.1 | 103.1 | 91.1 | 93.6 | 94.5 | 96.8 | 112.7 | |
| Std dev (%) | 6.4 | 1.4 | 2.1 | 1.7 | 2.8 | 5.7 | 3.5 | |
| RBD palm | ||||||||
| Sample conc. (ng/g) | <LOQ | <LOQ | 2,638 | <LOQ | 4,440 | 1,439 | <LOQ | |
| 1× LOQ | ||||||||
| Mean (%) | 93.1 | 102.7 | 118.5 | 102.5 | 147.5 | 126.0 | 109.3 | |
| Std dev (%) | 4.6 | 5.9 | 21.3 | 2.0 | 27.9 | 10.5 | 2.5 | |
| 2× LOQ | ||||||||
| Mean (%) | 103.5 | 104.2 | 108.7 | 100.4 | 97.5 | 115.3 | 112.1 | |
| Std dev (%) | 1.8 | 2.5 | 6.1 | 5.1 | 26.3 | 3.5 | 2.5 | |
| 4× LOQ | ||||||||
| Mean (%) | 105.6 | 105.1 | 100.0 | 108.4 | 104.1 | 118.7 | 114.3 | |
| Std dev (%) | 2.0 | 0.4 | 0.6 | 5.2 | 8.9 | 3.2 | 4.4 | |
| Palm kernel | ||||||||
| Sample conc. (ng/g) | 578 | 308 | 338 | <LOQ | 904 | 569 | <LOQ | |
| 1× LOQ | ||||||||
| Mean (%) | 97.6 | 104.2 | 107.7 | 82.7 | 128.5 | 109.3 | 93.5 | |
| Std dev (%) | 27.3 | 8.0 | 13.7 | 8.7 | 16.8 | 2.0 | 2.3 | |
| 2× LOQ | ||||||||
| Mean (%) | 141.5 | 110.9 | 103.3 | 87.3 | 116.1 | 105.6 | 107.3 | |
| Std dev (%) | 3.8 | 6.5 | 6.4 | 2.4 | 2.6 | 3.4 | 2.6 | |
| 4× LOQ | ||||||||
| Mean (%) | 139.3 | 111.3 | 100.2 | 92.4 | 110.3 | 104.2 | 113.7 | |
| Std dev (%) | 1.3 | 2.5 | 4.2 | 3.2 | 3.7 | 2.0 | 3.0 | |
Three replicates of each fortification level were included