The Scientific World Journal / 2013 / Article / Tab 4

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 4

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

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

4000–650Normal0.99182.110.99272.44
Derivative 10.99920.730.99880.59
Derivative 20.99950.670.99910.53

2977–3028,
1666–1739,
740–1446
Normal0.99950.710.99910.58
Derivative 10.99940.750.99840.66
Derivative 2*0.9995 0.66 0.9994 0.62

2985–3024,
752–1755
Normal0.99930.760.99920.66
Derivative 10.99970.470.99880.63
Derivative 20.99930.660.99940.57

752–1755Normal0.99920.900.99960.46
Derivative 10.99930.740.99970.44
Derivative 20.99960.590.99970.64

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

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