Rapid and Nondestructive Identification of Origin and Index Component Contents of Tiegun Yam Based on Hyperspectral Imaging and Chemometric Method

Table 5

Prediction results of selected data by SPA of Tiegun yam powder samples.

Content	Number	Training set		Prediction set
		R^2	RMSEC (mg/g)	R^2	RMSEP (mg/g)	RPD
Starch	39	0.9943	4.0396	0.9521	12.0895	4.45
Polysaccharide	23	0.9992	0.2161	0.8145	3.5468	2.05
Protein	48	0.9608	1.4008	0.8259	3.3886	2.18