. 2020 Jan 17;9(1):98. doi: 10.3390/foods9010098

Table 1.

Quality of the models obtained with the PLS algorithm. TSS: total soluble solid content; TA: titratable acidity; RMSECV: root mean square error of cross validation.

Parameter	RMSECV	Rank	Regions (cm⁻¹)	Preprocessing	R² (%)	Bias
TA	0.861	5	9400–6100 5452–4600	Vector normalization	57.32	−0.000762
TSS	1.3	6	9400–7500	First derivative + Vector normalization	83.04	0.01