Research Article
Free Radical Scavenging Capacity, Carotenoid Content, and NMR Characterization of Blighia sapida Aril Oil
Table 4
Infrared spectra data for ackee, coconut, and soybean oil.
| | Functionality | Ackee oil | Coconut oil | Soybean oil | | | |
| | Olefinic carbons –HC=CH-cis | 721 (m) | 721 (m) | 719 (m) | | C-O-C stretching in esters | | 1078 (w) | 1031; 1097 (w) | | C-O-C stretching in esters | 1161 (m) | 1155 (s) | 1159 (s) | | C-O-C stretching in esters | 1234 (w) | 1232 (w) | 1242 (w) | | CH3 bending | 1379 (w) | 1377 (m) | 1379 (w) | | CH3 deformation and/or C-H bending mode of CH2 | | 1435 (w) | | | CH2 bending (acyl chain) and/or CH3 deformation | 1464 (m) | 1464 (m) | 1462 (m) | | C = O stretching in esters | 1743 (s) | 1743 (s) | 1743 (s) | | C-H stretching in CH3 and CH2 () | 2852 (s) | 2852 (s) | 2854 (m) | | C-H stretching in CH3 and CH2 () | 2922 (s) | 2922 (s) | 2924 (s) | | C-H stretching in CH3 () and CH2 | 2954 (sh) | 2956 (sh) | 2956 (sh) | | C-H stretching vibration, olefinic group =CH | 3006 (sh) | | 3006 (sh) |
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Abbreviations† s: sharp; m: medium; w: weak; sh: shoulder.
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