The acid hydrolysis performed was a

The acid hydrolysis performed was able to release xylose, glucose and arabinose (Table 1) from the hemicellulose and the cellulose present in the CAB, making these carbohydrates availablefor microbial assimilation and xylitol production. The total concentration of fermentable sugars obtained by acid hydrolysis, including glucose, xylose and arabinose, was approximately 43 g L−1. Thus, CABH is a favorable medium for microbial routes due to these carbon sources present. Comparing with literature data [18,26], it was noted that the acid hydrolysis was performed to obtain an efficient treatment of the sugars of interest. Dilute acid hydrolysis is probably the most commonly applied method among the chemical pretreatment methods used. The main objective of the acid hydrolysis pretreatment stage is to solubilize the hemicellulosic fraction of the biomass, which can release high amounts of sugars, as xylose and arabinose [6].