Although the total reducing sugars found after concentration seems to be conserved, the loss in xylose content was found significant 1.92 g/L leading to the formation of furfural, increasing the concentration from 4.56 to 20.35 mM. Conservation in TRS may be occurred due to the further hydrolysis of cellobiose and cellotriose formed during the incomplete acid hydrolysis of cellulose. A slight reduction in phenolics was observed during the concentrating process.
During detoxification 0.76 g/L loss was observed in TRS. The furfural and phenolics concentration were reduced from 20.35 to 15.53 mMand 253.03 to 79.47 mg/L respectively. The phenolic concentration was reduced to greater extent than the furfural reduction.