Table 1.
Model | Calibration range (g L−1) | Data included | Wavenumber region (cm−1) | Preprocessing steps | Latent variables | RMSECV (g L−1) | r2 CV |
---|---|---|---|---|---|---|---|
POX-PLS | 0–3.47 | Offline: fermentation, standards; fermentations 1–4 | 1188–1352 & 1747–1817 | Mean centering, first derivative (Sav-Gol, order 2, window 11) | 6 | 0.31 | 0.90 |
PenV-PLS | 0–5.55 | Offline: fermentation, standards, fermentations 1 & 3–4 | 1184–1501 & 1672–1855 | Mean centering, first derivative (Sav-Gol, order 2, window 11) | 7 | 0.22 | 0.97 |