“…Generally, the ester carbonyl functional group of triglycerides was observed at the wavenumber of 1741-1746 cm À1 (Setiowaty, Che Man, Jinap, & Moh, 2000). Peaks at wavenumbers of 1744 and 1745 cm À1 were considered to be a triglyceride peak for seabass and red tilapia muscle, respectively.…”