Detoxification of Corncob Acid Hydrolysate with SAA Pretreatment and Xylitol Production by Immobilized Candida tropicalis

Table 2

Characteristics of sugars and inhibitors in corncob acid hydrolysate via SAA pretreatment and two-step adsorption detoxification.

Hydrolysate	Compositions
	Glucose; /(g/L)	Xylose; /(g/L)	Arabinose; /(g/L)	Acetic acid; /(g/L)	Furfural; /(g/L)	Phenolic compounds; /(g/L)
Original concentration of hydrolysate	1.47±0.07	33.42±1.33	2.06±0.11	9.47±0.43	1.362±0.06	16.1±0.38
Detoxified by SAA^a and concentrated^b	1.61±0.10	98.12±1.94	12.46±1.65	ND^c	ND	6.75±0.38
Concentrated^b and detoxified by adsorption	4.63±0.27	93.64±1.55	5.55±0.41	5.72±0.34	ND	10.85±0.42

aSAA pretreatment performed 10 h at 70°C using 10.0% aqueous ammonia.
^bThe hydrolysates were concentrated 3-fold.
^cND: not detected.