Research Article
Rapid Quality Identification of Decoction Pieces of Crude and Processed Corydalis Rhizoma by Near-Infrared Spectroscopy Coupled with Chemometrics
Table 8
Results with corydaline of NIR spectra pretreatment methods.
| Pretreatment | R2 | RMSEC (%) | RMSEP (%) |
| MSC + spectrum + NS | 0.8614 | 2.5207 | 2.5157 | MSC + 1stD + NS | 0.9521 | 1.1125 | 1.1152 | MSC + 2stD + NS | 0.9918 | 0.5510 | 0.7230 | MSC + spectrum + S-G | 0.8599 | 2.6209 | 2.5798 | MSC + 1stD + S-G | 0.8928 | 2.0184 | 2.0168 | MSC + 2stD + S-G | 0.9534 | 1.1123 | 1.0153 | MSC + 1stD + ND | 0.8793 | 2.3950 | 2.3187 | MSC + 2stD + ND | 0.8368 | 2.7224 | 2.7701 | SNV + spectrum + NS | 0.8628 | 2.4207 | 2.4149 | SNV + 1stD + NS | 0.9521 | 1.2125 | 1.3153 | SNV + 2stD + NS | 0.9674 | 1.1089 | 1.1077 | SNV + spectrum + S-G | 0.7894 | 3.0251 | 3.0181 | SNV + 1stD + S-G | 0.8935 | 2.0183 | 2.0169 | SNV + 2stD + S-G | 0.9536 | 1.1230 | 1.1528 | SNV + 1stD + ND | 0.8795 | 2.3194 | 2.2887 | SNV + 2stD + ND | 0.8178 | 2.8935 | 2.8897 |
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