Research Article
Free Radical Scavenging Capacity, Carotenoid Content, and NMR Characterization of Blighia sapida Aril Oil
Table 2
1H Nuclear magnetic resonance spectroscopy of ackee, coconut, and soybean oils.
| Proton | Functionality | Ackee oil | Coconut | Soybean | ppm | ppm | ppm |
| CH3 | Terminal methyl | 0.84 (t) | 0.84 (t) | 0.84 (t) | CH2 | Methylene | 1.24 (s) | 1.24(s) | 1.23 (s) | CH2-CH2-COO | Acyl chains | 1.58 (s) | 1.59 (s) | 1.57 (m) | CH2-CH=CH | All unsaturated fatty acids | 1.98 (s) | 1.99 (s) | 2.02 (m) | CH2-COO | All acyl chains | 2.29 (m) | 2.29 (m) | 2.28 (m) | C=C-CH2=C | Protons attached to bis-allylic carbon | 2.73 (s) | 2.73 (s) | 2.73 (m) | CH2O(α) | Glycerol (triglycerides) | 4.13 (dd) | 4.12 (dd) | 4.11 (dd) | | | 4.28 (dd) | 4.29 (dd) | 4.27 (dd) | CHO(β) | Glycerol (triglycerides) | 5.24 (m) | 5.24 (m) | 5.24 (m) | CH=CH | Olefinic protons | 5.30 (m) | 5.31 (m) | 5.32 (m) |
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m: multiplet; s: singlet; dd: doublet of doublet; t: triplet. Very small peak. |