Optimisation of sugar and solid biofuel co-production from almond tree prunings by acid pretreatment and enzymatic hydrolysis

Bioresources and Bioprocessing

Table 6 Model parameters (a_i), standard errors (SE), and significance level (p) for the mathematical model to describe (Y_global)*

Response variable	a_i	SE	p-value (Prob > F)	R²	R²_adjust
Y_global (A)	a₀: 30.823	0.407	3.54·10^–10	0.984	0.974
	a₁: –2.224	0.249	1.10·10^–4
	a₂: –1.508	0.249	9.17·10^–4
	a₃: –4.784	0.296	3.59·10^–6
	a₄: –1.936	0.296	6.15·10^–4
Y_global (B)	a₀: 31.197	0.307	6.08·10^–11	0.992	0.986
	a₁: –2.647	0.188	7.96·10^–6
	a₂: –1.434	0.188	2.63·10^–4
	a₃: –4.802	0.224	6.65·10^–7
	a₄: –2.168	0.224	6.89·10^–5

^*Y_global: Overall monosaccharides yield of the process for enzymatic hydrolysis carried out with biocatalyst loads of 10 FPU/g WIS (A) and 15 FPU/g WIS (B)