Real-Time Release Testing of Herbal Extract Powder by Near-Infrared Spectroscopy considering the Uncertainty around Specification Limits

Table 1

PLS model characteristics for cryptotanshinone.

Pretreatment	LVs	Calibration set				Validation set
		rcal	RMSEC	RMSECV	BIAScal	rval	RMSEP	RPD	BIASval
Origin	11	0.9821	0.470	0.640	0.380	0.9712	0.5835	4.3	0.440
1std	10	0.990	0.344	0.557	0.261	0.9737	0.528	4.7	0.376
2ndd	10	0.9992	0.102	0.422	0.084	0.9818	0.466	5.3	0.341
S–G	11	0.9819	0.472	0.642	0.381	0.9709	0.587	4.2	0.441
MSC	12	0.9872	0.397	0.708	0.305	0.9761	0.536	4.6	0.399
SNV	12	0.9860	0.386	0.664	0.325	0.9713	0.583	4.3	0.420
WDS	11	0.9960	0.644	0.912	0.535	0.9516	0.755	3.3	0.623