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Table 2 The formations of xylose and XOS (DP 2–6) from poplar by the 0–10% AC pretreatment for 10–50 min

From: Production of xylooligosaccharides and monosaccharides from poplar by a two-step acetic acid and peroxide/acetic acid pretreatment

AC concentration (%)

Treatment time (min)

Xylose (%)

Xylooligosaccharide (%)

XOS yield (%, DP 2–6)

Xylobiose

Xylotriose

Xylotetraose

Xylopentaose

Xylohexaose

0

10

2.4

5.0

6.3

6.3

3.1

2.1

22.8

5

10

9.1

4.3

3.8

5.0

2.6

3.1

18.8

10

10

18.9

9.7

8.4

10.8

5.3

6.2

40.5

0

30

5.6

4.2

4.9

3.9

4.7

5.2

22.9

5

30

32.9

14.5

11.4

15.7

7.5

6.6

55.8

10

30

43.8

15.7

7.9

10.0

3.6

2.8

40.0

0

50

8.6

5.9

6.7

9.2

5.9

6.9

34.6

5

50

43.6

13.8

8.3

10.4

3.7

2.8

39.0

10

50

46.4

11.7

4.1

5.6

1.3

1.2

23.9

  1. The XOS yields were based on the AC post-hydrolysis of pretreatment liquor