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Table 1 Chemical composition of the untreated bagasse sample and samples submitted to acid and alkali pretreatments.

From: Chemical and morphological characterization of sugarcane bagasse submitted to a delignification process for enhanced enzymatic digestibility

Bagasse samples

Bagasse composition (%)

 

Cellulose

Hemicellulose

Lignin

Ash

Total

Pretreatment yield (%)

Untreated

35.2 ± 0.9

24.5 ± 0.6

22.2 ± 0.1

20.9 ± 4.3

102.8 ± 2.6

100.0 ± 5.1

H 2 SO 4 1%

51.2 ± 0.2

7.8 ± 0.7

29.5 ± 0.6

12.2 ± 1.5

100.7 ± 1.5

93.5 ± 2.7

NaOH 0.25%

66.0 ± 0.5

5.2 ± 0.1

25.2 ± 0.3

3.3 ± 0.1

99.7 ± 0.9

90.5 ± 3.2

NaOH 0.5%

68.0 ± 1.3

3.3 ± 0.1

23.1 ± 6.7

4.3 ± 5.9

98.8 ± 0.5

84.5 ± 3.7

NaOH 1%

81.6 ± 0.6

3.1 ± 0.1

11.0 ± 0.9

1.9 ± 0.3

97.7 ± 1.1

72.5 ± 2.8

NaOH 2%

84.7 ± 0.3

3.3 ± 0.1

9.5 ± 0.5

1.1 ± 0.4

98.8 ± 1.1

68.3 ± 2.0

NaOH 3%

85.3 ± 0.1

3.2 ± 0.1

9.5 ± 0.5

2.3 ± 0.2

100.1 ± 0.4

70.7 ± 1.8

NaOH 4%

83.4 ± 3.8

3.2 ± 0.1

9.3 ± 0.4

1.8 ± 0.4

97.7 ± 4.6

65.9 ± 4.7

  1. Contents are expressed on a bagasse dry weight basis as an average (± standard deviation) of duplicate determinations.