Table 1 PLSR coefficients of determination (R2) and root mean square errors (RMSE) for determination of glucose (for all three species), with the number of components in parenthesis (A opt ); CV cross validation, ITV independent test validation
FTIR measurement mode | CV | ITV | ||
|---|---|---|---|---|
R2 (A opt ) | RMSE (g L−1 glucose) | R2 (A opt ) | RMSE (g L−1 glucose) | |
ATR | 0.98 (1) | 3.59 (4.5%) | 0.96 (2) | 4.49 (5.6%) |
HTS | 0.96 (3) | 4.87 (6.1%) | 0.95 (2) | 4.98 (6.2%) |