FTIR Spectroscopy Combined with Partial Least Square for Analysis of Red Fruit Oil in Ternary Mixture System

Table 2

𝑅² values for PLS model using different spectral frequencies for analysis of red fruit oil (RFO), corn oil (CO), and soybean oil (SO) in ternary mixture.

Frequency regions (cm^−1)	𝑅^2 values of RFO, CO, and SO in ternary mixture
	RFO	CO	SO
4000–650	0.9793	0.8652	0.9100
1500–1800	0.9753	0.5532	0.5062
1500–1800 and 800–1200	0.9771	0.6689	0.7281