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

Table 5 Summary statistics for calibration models for carbohydrate release and yield following pretreatment and enzymatic hydrolysis

Constituent	Samples	Factors	RMSEC	RMSECV	R ²	Slope	Intercept
GX.Release	166	9	0.03	0.03	0.78	0.80	0.07
G.Release	167	11	0.02	0.03	0.80	0.81	0.05
X.Release	167	11	0.01	0.01	0.82	0.84	0.02
GX.Yield	164	8	0.05	0.06	0.84	0.85	0.10
G.Yield	165	8	0.06	0.07	0.84	0.85	0.10
X.Yield	165	8	0.05	0.05	0.70	0.73	0.18

GX.Release and GX.Yield are separate PLS-1 models. G.Release and X.Release, and G.Yield and X.Yield are combined PLS-2 calibration models. “Factors:” optimal number of factors for the model. RMSECV values are slightly higher than the uncertainties of the primary analytical methods. The slope and intercept describe the line of best fit for cross-validation.
RMSEC root-mean-square-error of the calibration model, RMSECV root-mean-square-error of cross-validated model, R ² square of the correlation coefficient of the cross-validated model.

ISSN: 2731-3654