Research Article
Rancidity Estimation of Perilla Seed Oil by Using Near-Infrared Spectroscopy and Multivariate Analysis Techniques
Table 3
Results of PCR calibration and validation for acid and peroxide values of perilla seed oil according to preprocessing methods.
| Preprocessing methods | Acid value | Peroxide value | Calibration | Validation | Calibration | Validation | 2 | RMSE | 2 | RMSE | 2 | RMSE | 2 | RMSE |
| Raw data | 0.8979 | 0.0699 | 0.6501 | 0.1293 | 0.8240 | 1.6833 | 0.7748 | 1.9136 | MSC | 0.8645 | 0.0805 | 0.7091 | 0.1179 | 0.8787 | 1.4042 | 0.7328 | 2.0841 | SNV | 0.8373 | 0.0882 | 0.6859 | 0.1225 | 0.8120 | 1.7484 | 0.7552 | 1.9951 | Normalization | Max | 0.8390 | 0.0877 | 0.5344 | 0.1492 | 0.8403 | 1.6113 | 0.7654 | 1.9529 | Mean | 0.8785 | 0.0762 | 0.6985 | 0.1201 | 0.8575 | 1.5156 | 0.7833 | 1.8771 | Range | 0.8105 | 0.0952 | 0.6454 | 0.1302 | 0.8157 | 1.7308 | 0.7474 | 2.0265 |
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