Table 1.
Identification of tocochromanols by ASE and LC–ESI–MS. Quantification of vitamin E isomers (μg/g) in three natural chia seeds oils
| μg/g | Identification | chia seeds oil-1 (RRR) | chia seeds oil-2 (RRR) | chia seeds oil-3 (RRR) | ||||
|---|---|---|---|---|---|---|---|---|
| MS [M-H]− (m/z) | Products ions (m/z) | Mean | SD | Mean | SD | Mean | SD | |
| α-Tocopherol (α-T) | 429.1 | 163 | 130.40a | (3.72) | 6.93b | (0.36) | 10.34c | (0.96) |
| α-Tocotrienol (α-T3) | 415.4 | 149 | 2.88a | (0.16) | 4.67b | (0.21) | 2.70a | (0.26) |
| β-Tocopherol (β-T) | 415.4 | 149 | 10.98a | (0.41) | 5.27b | (0.43) | 4.64b | (0.58) |
| β-Tocopherol (β-T) | 429.1 | 135 | traces | traces | traces | |||
| γ-Tocopherol (γ-T) | 423.4 | 163 | 699.23a | (24.58) | 545.82b | (27.90) | 557.20b | (20.40) |
| γ-Tocotrienol (γ-T3) | 409.4 | 148.8 | 2.34a | (0.14) | 2.37a | (0.16) | 2.16a | (0.20) |
| δ-Tocopherol (δ-T) | 409.4 | 148.8 | 6.48a | (0.18) | 0.46b | (0.02) | 14.51c | (1.37) |
| δ-Tocotrienol (δ-T3) | 395.4 | 134.8 | 3.67a | (0.27) | 2.32a | (0.35) | 2.84a | (0.29) |
| TOTAL | 855.98 | 568.84 | 594.39 | |||||
Samples provenance: Chia seeds oil-1 (RRR) from Mexico; chia seeds oil-2 (RRR) from Peru chia seeds oil-3 (RRR); from Brazil
a, b, cDifferent letters in the same column denote a significant difference according to the Student–Newman–Keuls test, at p ≤ 0.05