Extraction of sugarcane bagasse arabinoxylan, integrated with enzymatic production of xylo-oligosaccharides and separation of cellulose

Table 4 Sequential extraction

NaOH 1 M	Arabinose	Galactose	Glucose	Xylose	Cellulose	Hemicellulose
Reaction time, 30 min
Cycle 1	1.23 ± 0.07	0.21 ± 0.02	49.14 ± 0.45	19.90 ± 0.20	44.23 ± 0.4	18.72 ± 0.10
Cycle 2	0.85 ± 0.01	0.13 ± 0.0	55.64 ± 0.20	17.83 ± 0.16	50.08 ± 0.18	16.51 ± 0.21
Cycle 3	0.61 ± 0.06	0.12 ± 0.03	58.63 ± 0.99	15.77 ± 0.01	52.77 ± 0.89	14.49 ± 0.01
Reaction time, 60 min
Cycle 1	1.33 ± 0.06	0.17 ± 0.04	49.29 ± 0.51	17.78 ± 0.52	44.36 ± 0.46	16.97 ± 0.55
Cycle 2	0.85 ± 0.03	0.11 ± 0.0	51.80 ± 0.25	14.10 ± 0.75	46.62 ± 0.22	13.25 ± 0.68
Cycle 3	0.67 ± 0.04	0.09 ± 0.0	55.92 ± 0.69	13.33 ± 0.48	50.33 ± 0.62	12.40 ± 0.45

Monosaccharide composition (%) and recalculation to polysaccharides in the remaining residue. Data after each extraction (30 and 60 min, respectively) in totally three repeats using 1 M NaOH at 121 °C are shown. The cellulose and hemicellulose content was calculated from the monosaccharide composition as described in Table 2

ISSN: 2731-3654