Improved sugar yields from biomass sorghum feedstocks: comparing low-lignin mutants and pretreatment chemistries

Table 3 ANOVA of the total sugar yield (g/g) of the sorghum feedstocks from ASE350 experiments

Effect	Glucose and xylose yield from structural and non-structural carbohydrates, and recovery of carbohydrates solubilized during deacetylation (DE-NL)		Glucose and xylose yield from structural and non-structural carbohydrates, and loss recovery of carbohydrates solubilized during deacetylation (DE-LO)
Effect	F value	p value	F value	p value
Feedstock	60.98	<10⁻⁵	56.44	<10⁻⁵
Temperature	79.91	<10⁻⁵	81.07	<10⁻⁵
Deacetylation	71.96	<10⁻⁵	758.1	<10⁻¹⁵
Batch	0.566	0.46	1.183	0.28
Temperature * feedstock	7.368	0.0096	8.170	0.0067
Feedstock * deacetylation	0.003	0.95	0.198	0.66
Temperature * deacetylation	17.16	0.0002	17.89	0.0001
Dilute acid pretreatment temperature at 150 °C
Feedstock	46.54	<10⁻⁵	44.87	<10⁻⁵
Deacetylation	66.97	<10⁻⁵	226.6	<10⁻⁵
Batch	0.207	0.65	0.479	0.50
Feedstock * deacetylation	0.790	0.39	1.154	0.30
Dilute acid pretreatment temperature at 160 °C
Feedstock	15.74	0.0008	13.07	0.0018
Deacetylation	11.43	0.0031	608.7	<10⁻¹⁵
Batch	0.391	0.54	0.734	0.40
Feedstock * deacetylation	0.958	0.34	0.358	0.55

Only experimental data from pretreatment reactor temperatures of 150 and 160 °C are included in this analysis, since higher pretreatment temperatures caused excessive degradation of solubilized xylose (see text)

ISSN: 2731-3654