Table 9: The main signals present in 1H NMR functional groups of LA, MEOA, and diepoxide LA.

𝛿 (ppm) LAa 𝛿 (ppm) MEOAb 𝛿 (ppm) diepoxide LAAssignment

0.88–0.910.86–0.880.88–0.92–CH3
1.30–2.771.29–2.331.34–2.36 –CH2
2.92–3.122.99–3.13–CH–O–CH–
5.35–5.365.38–5.49–CH=CH–
7.277.277.27–COOH

Notes: Linoleic acid (a); 9(12)-10(13)-monoepoxy 12(9)-octadecanoic acid (b).