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)

m: multiplet; s: singlet; dd: doublet of doublet; t: triplet.
Very small peak.