Understanding of alkaline pretreatment parameters for corn stover enzymatic saccharification

Table 2 Composition of washed pretreated corn stover solids

Temp (°C)	NaOH loading (g NaOH/g corn stover)	Time (mins)	Composition (%)^a,b			Recovery (%)^b,c
Temp (°C)	NaOH loading (g NaOH/g corn stover)	Time (mins)	Glucan	Xylan	AIL	Glucan	Xylan	AIL	Total
74	0.052	102	48.11	25.75	14.44	96.16	92.88	59.41	80.38
95	0.100	75	61.20	28.20	6.42	93.25	77.53	20.12	61.26
130	0.070	75	57.85	25.98	9.74	95.75	77.61	33.17	66.55
95	0.070	120	55.46	27.20	8.98	96.47	85.39	32.14	69.95
116	0.088	102	59.53	26.91	5.36	95.20	77.67	17.65	64.30
74	0.052	48	46.63	25.31	14.84	96.66	94.69	63.28	83.35
95 ^d	0.070	75	54.60	26.16	8.37	97.64	84.44	30.81	71.91
116	0.088	48	60.24	27.53	4.74	96.89	79.92	15.69	64.68
95	0.040	75	45.25	25.06	15.20	97.69	97.64	67.50	86.80
60	0.070	75	48.48	25.18	12.19	97.55	91.44	50.47	80.90
74	0.088	102	54.03	25.64	8.06	95.83	82.07	29.40	71.31
116	0.052	102	50.67	24.68	13.36	95.70	84.13	51.94	75.95
95	0.070	30	51.60	26.00	11.48	96.43	87.68	44.13	75.14
116	0.052	48	49.43	25.03	14.07	96.46	88.13	56.50	78.46
74	0.088	48	54.34	25.54	9.35	97.13	82.39	34.38	71.87
95 ^d	0.070	75	54.22	26.33	8.21	97.81	84.29	30.26	71.59

^a The composition of insoluble solids are based on oven-dry weight. ^b Values are expressed as averages of three replicate samples. Coefficient of variation (CV) is below 2.1 %. ^c Values were calculated based on the total recovery, composition of alkaline pretreated, as well as that of raw corn stover. ^d Center point of the central composite design.

ISSN: 2731-3654