Quantification and Classification of Corn and Sunflower Oils as Adulterants in Olive Oil Using Chemometrics and FTIR Spectra

Table 3

The performance of multivariate calibration (MC) and spectral treatments for analysis of corn oil in EVOO.

			Equation		R ^2		RM	RM
MC	Spectra	Factor	Calibration	Prediction	Calibration	Prediction	SEC	SEP
							(% v/v)	(% v/v)
PLS	Normal	(3)	𝑦=0.999𝑥+0.013	𝑦=0.969𝑥+1.363	0.999	0.997	0.404	1.13
	1st der	(7)	𝑦=1.000𝑥−0.001	𝑦=0.936𝑥+1.519	1.000	0.977	0.019	2.34
	2nd der	(8)	𝑦=0.999𝑥−0.001	𝑦=0.567𝑥+5.439	1.000	0.534	0.083	10.5
PCR	Normal	(10)	𝑦=0.999𝑥+0.014	𝑦=0.970𝑥+1.136	0.999	0.997	0.394	1.17
	1st der	(10)	𝑦=0.999𝑥+0.012	𝑦=0.931𝑥+1.462	0.999	0.977	0.356	2.33
	2nd der	(10)	𝑦=0.995𝑥+0.095	𝑦=0.567𝑥+5.338	0.995	0.497	1.02	11.0