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Table 1 Variation of corn cob residue chemical composition after sulfite pretreatments

From: Comparative study of sulfite pretreatments for robust enzymatic saccharification of corn cob residue

Component/%

RMa

Neutrala

Acidica

Alkalinea

Ethanola

Solid Yield

—

89.23

91.85

78.18

84.68

Glucan

48.10±0.306

51.55±0.273

49.31±0.363

51.77±0.369

55.51±0.391

Klason Lignin

41.58±0.296

37.35±0.259

37.29±0.175

35.57±0.291

35.14±0.251

Acid Soluble Lignin

1.61±0.084

0.44±0.017

0.65±0.012

0.354±0.011

0.385±0.009

Total Lignin

43.19±0.306

37.79±0.352

37.95±0.172

35.92±0.280

35.53±0.243

Ash

6.84±0.211

7.95±0.358

8.51±0.139

9.21±0.326

7.91±0.199

Residual Glucan b

-

45.99

45.29

40.47

47.01

Residual Lignin b

-

33.72

34.86

28.08

30.09

  1. Note: a: RM represents the raw material of corn cob residue, while Neutral, Acidic, Alkaline, and Ethanol represent corn cob residue treated with sulfite in neutral, acidic, alkaline, and ethanol environments, respectively. b: based on the quality of the untreated corn cob residue.