SB-ATR FTIR Spectroscopic Monitoring of Free Fatty Acids in Commercially Available Nigella sativa (Kalonji) Oil

Table 2

FFA content (Mean ± SD) of commercial and N. sativa seed oil by Titrimetric and SB-ATR FTIR Methods.

N. sativa Oil	% FFA Titration	% FFA FTIR
Seed oil	3.75±0.09	3.70±0.070
Sample 1	20.35±0.26	20.47±0.044
Sample 2	16.15±0.32	16.10±0.089
Sample 3	14.22±0.35	14.16±0.037
Sample 4	16.16±0.16	16.06±0.050
Sample 5	9.68±0.19	9.79±0.030
Sample 6	26.81±0.40	26.77±0.085
	MDr=0.39	MDr=0.09
	SDDr=0.07	SDDr=0.03