The Scientific World Journal / 2013 / Article / Tab 5

Research Article

Authentication of Nigella sativa Seed Oil in Binary and Ternary Mixtures with Corn Oil and Soybean Oil Using FTIR Spectroscopy Coupled with Partial Least Square

Table 5

PLS performances at some frequency regions for the determination of NSO in ternary mixtures with CO and SO.

Frequencies region (cm−1) Spectra CalibrationValidation
RMSEC (% v/v) RMSEP (% v/v)

4000–650Normal0.99751.400.99861.04
Derivative 10.99890.990.99870.76
Derivative 20.99860.970.99900.69

2985–3024;
752–1755
Normal0.99851.070.99890.873
Derivative 10.99930.730.99930.70
Derivative 2*0.9945 1.77 0.9852 3.02

2977–3028;
1666–1739;
740–1446
Normal0.99871.070.99840.97
Derivative 10.99930.800.99860.78
Derivative 20.99930.860.99950.58

1666–1739Normal0.99691.560.99731.27
Derivative 10.99781.370.99641.33
Derivative 20.99711.530.99701.13

740–1446Normal0.97044.390.97773.57
Derivative 10.99900.880.99860.89
Derivative 20.99541.550.99910.90

*The frequency region and FTIR spectral treatment selected for quantification were marked with italics.

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