Rapid analysis of composition and reactivity in cellulosic biomass feedstocks with near-infrared spectroscopy

Table 6 Summary statistics for external validation of the PLS-1 and PLS-2 calibration models for carbohydrate release and yield

Constituent	Samples	Factors	RMSEP	R ²	Slope	Intercept
GX.Release	18	9	0.04	0.94	0.81	0.06
G.Release	18	11	0.03	0.94	0.82	0.04
X.Release	18	11	0.02	0.88	0.71	0.04
GX.Yield	18	8	0.06	0.92	0.85	0.09
G.Yield	18	8	0.09	0.86	0.84	0.09
X.Yield	18	8	0.05	0.86	0.79	0.13

External validation samples were predicted using the following calibration models: the PLS-1 GX.Release and GX.Yield calibration models, the PLS-2 G.Release and X.Release calibration model, and the PLS-2 G.Yield and X.Yield calibration model. “Factors:” the optimal number of factors for the model. The RMSEP values are higher than the uncertainty of the primary analytical methods.
RMSEP root-mean-square-error of the prediction of the validation samples, R ² square of the correlation coefficient of the predicted samples.

ISSN: 2731-3654