Table 1 Fermentation products produced in fermenters with wheat straw, oat xylan or microcrystalline cellulose as substrate^a

VFA concentration (mM)

41.2 (3.1)

43.9 (2.8)

41.8 (3.2)

35.9 (5.4)

32.6 (0.6)

44.3 (2.2)

30.6 (1.6)*

47.0 (5.5)

49.6 (1.7)

44.3 (3.5)

42.7 (1.1)

48.1 (2.2)

32.4 (2.7)

22.1 (21.0)*

38.3 (4.5)

39.5 (3.2)

34.5 (3.1)

31.7 (4.9)

31.5 (3.5)

39.8 (0.6)

27.4 (3.2)*

13.9 (1.0)

14.7 (0.9)

12.0 (0.5)

12.1 (2.0)

9.6 (0.2)*

15.1 (0.8)

9.2 (0.4)*

11.8 (0.9)

11.5 (0.8)

10.6 (0.7)

10.2 (0.2)

11.2 (0.8)

6.2 (0.3)*

4.9 (4.9)*

8.8 (1.0)

9.5 (0.8)

12.3 (0.4)*

7.7 (1.3)

6.4 (0.9)*

9.3 (0.2)

5.5 (0.8)*

0.3 (0.1)

16.9 (0.8)*

13.4 (1.0)*

11.6 (1.57)*

11.9 (0.2)*

16.2 (0.4)*

7.8 (4.7)*

0.7 (0.2)

31.0 (0.9)*

22.6 (2.0)*

22.3 (0.6)*

30.4 (2.1)*

11.5 (9.5)

13.8 (13.1*

0.1 (0.1)

24.8 (2.0)*

17.3 (2.1)*

16.2 (2.1)*

18.8 (2.3)*

25.0 (0.4)*

16.6 (2.1)*

55.3 (4.0)

75.5 (4.5)*

67.2 (3.7)

59.6 (9.0)

54.1 (0.7)

75.6 (3.3)*

47.8 (5.0)

59.5 (6.0)

92.2 (2.2)

77.5 (6.2)

75.2 (0.9)

89.8 (4.8)

50.17 (6.4)

40.8 (39.1)

47.2 (5.4)

73.8 (6.1)*

64.1 (4.7)*

55.7 (8.3)

56.7 (6.8)

74.1 (0.7)*

49.5 (6.1)

2.96 (0.02)

2.98 (0.01)

3.49 (0.42)*

2.99 (0.06)

3.40 (0.02)

2.94 (0.02)

3.34 (0.07)

3.97 (0.39)

4.31 (0.14)

4.16 (0.10)

4.19 (0.08)

4.30 (0.15)

5.21 (0.16)*

4.68 (0.28)*

4.37 (0.12)

4.18 (0.05)

2.80 (0.30)*

4.13 (0.10)

4.93 (0.19)*

4.28 (0.01)

5.00 (0.16)*

5.8

5.82

5.88*

5.92*

5.87

5.49*

5.87

5.8

5.18*

5.14*

5.16*

5.14*

5.49*

5.14*

5.8

5.50*

5.51*

5.52*

5.51*

5.49*

5.50*