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Table 2 Composition of the solid fraction of pretreated sugar cane bagasse in percentage of dry matter before enzymatic hydrolysis and pH

From: An approach to the utilisation of CO2 as impregnating agent in steam pretreatment of sugar cane bagasse and leaves for ethanol production

Steam pretreatment conditions

Glucan

Xylan

Lignin

pH

190°C/5 min

46.9

13.0

26.8

3.9

190°C/5 min/SO2

49.7

3.2

29.2

1.7

190°C/5 min/CO2

43.5

10.6

26.3

3.8

190°C/10 min/CO2

52.0

8.2

27.6

3.7

190°C/15 min/CO2

49.8

12.0

27.6

3.7

205°C/5 min/CO2

53.0

9.5

27.2

3.8

205°C/10 min/CO2

60.5

6.5

29.5

3.5

205°C/15 min/CO2

59.3

4.5

30.8

3.4

220°C/5 min/CO2

59.1

4.0

31.2

3.3

220°C/10 min/CO2

58.0

3.0

32.6

3.2