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Table 6 Chemical composition (%) of purified extracted xylans

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

Picture of xylan fraction and sample abbreviation

Ara

Gal

Glu

Xyl

Man

UA

Xyl/Ara

Xyl/UA

2 M-C1

6.72 ± 0.08

0.27 ± 0.01

7.8 ± 0.44

75.0 ± 1.21

0.43 ± 0.05

3.3

11.18 ± 0.31

22.74 ± 0.22

2 M-C2

5.64 ± 0.10

0.31 ± 0.05

5.97 ± 0.51

67.4 ± 1.27

nd

2.46

11.94 ± 0.02

27.38 ± 1.46

2 M-C3

4.64 ± 0.09

0.11 ± 0.04

3.97 ± 0.12

65.1 ± 0.54

nd

1.3

14.05 ± 0.16

50.1 ± 2.05

1 M-C1

7.93 ± 0.13

0.41 ± 0.03

12.27 ± 0.33

73.0 ± 1.0

0.56 ± 0.03

2.48

9.20 ± 0.02

29.42 ± 0.36

1 M-C2

6.83 ± 0.21

0.29 ± 0.0

6.7 ± 0.21

76.4 ± 0.81

nd

2.68

11.19 ± 0.22

28.5 ± 0.60

1 M-C3

5.32 ± 0.11

0.21 ± 0.01

4.56 ± 0.19

72.2 ± 1.12

nd

4.05

13.57 ± 0.08

17.82 ± 0.04

0.5 M-60 min

7.48 ± 0.12

0.6 ± 0.03

21.88 ± 0.67

48.5 ± 1.12

0.28 ± 0.01

2.76

6.49 ± 0.05

17.58 ± 0.04

PLE (No.4)

6.63 ± 0.08

0.49 ± 0.04

13.14 ± 0.15

58.1 ± 0.76

0.51 ± 0.04

3.61

8.76 ± 0.0

16.09 ± 0.23

Untreated bagasse

2.24 ± 0.07

0.72 ± 0.0

36.58 ± 0.13 ara>

25.7 ± 0.79

0.16 ± 0.05

1.87

11.18 ± 0.31

13.75 ± 0.51

  1. 2 M-C1: 1st cycle extraction in 2 M NaOH; 2 M-C2: 2nd cycle extraction in 2 M NaOH; 2 M-C3: 3rd cycle extraction in 2 M NaOH; 1 M-C1: 1st cycle extraction in 1 M NaOH, 1 M-C2: 2nd cycle extraction in 1 M NaOH; 1 M-C3: 3rd cycle extraction in 1 M NaOH, 0.5 M-60 min: 60 min extraction in 0.5 M NaOH; PLE(No4): pressurized liquid extraction using 0.1 M NaOH, at 150 °C, 20 min
  2. Ara arabinose, Gal galactose, Glu glucose, Man mannose, Xyl xylose, UA uronic acids, nd not detected