Rapid Determination of Pachymic Acid Content by Near-Infrared Spectroscopy

Table 6

The parameters of the optimal NIR detection model.

Project		Parameters
Model parameters	Spectral pretreatment method	SNV + SD
	Principal factor number of PLS	9
	Spectral range	4000–10000 cm^−1
The evaluation results		0.915
	RMSEC (mg/g)	0.051
	RMSEP (mg/g)	0.054
		0.917