Figure 4

Histograms of glucose and xylose release and yield for the six calibration sets. G.Release and X.Release refer to the individual carbohydrates released following pretreatment and enzymatic hydrolysis. GX.Release refers to the sum of glucose and xylose released following pretreatment and enzymatic hydrolysis. Release was measured as the mass of carbohydrate release per unit of dry biomass in grams per gram. G.Yield refers to the ratio of glucose release (as previously defined and anhydro corrected) to the glucan and sucrose mass fraction in the feedstock. X.Yield refers to the ratio of xylose release to the xylan mass fraction in the feedstock. GX.Yield refers to the sum of the two carbohydrate yields as previously explained. Frequency on the y-axis refers to the number of samples with a given value for each constituent. The blue lines represent normal distributions and are intended to highlight any discrepancy between the histogram and normality. The calibration set does not have a normal distribution for any of the constituents, which is not unexpected for a multispecies feedstock population.