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Table 3 Overall mass balance for the optimal (LHW, H2SO4, NaOH) pretreatments and SSF process of Miscanthus to bioethanol

From: A finalized determinant for complete lignocellulose enzymatic saccharification potential to maximize bioethanol production in bioenergy Miscanthus

  Raw material Optimal pretreatments
LHWa H2SO4 NaOH
Solid recovery after optimal pretreatments 100 56.3‒68.9 (± 4.55) 58.9‒64.9 (± 2.07) 53.1‒67.7 (± 5.14)
Cellulose content in pretreated residues 37.1‒44.4 (± 3.13) 37.1‒44.3 (± 3.09) 36.4‒43.8 (± 3.07) 36.3‒43.9 (± 3.07)
Hemicellulose in pretreated residues 27.4‒30.9 (± 1.10) 4.8‒6.4 (± 0.52) 4.6‒5.9 (± 0.55) 7.7‒11.4 (± 1.34)
Lignin in pretreated residues 19.2‒22.6 (± 1.14) 9.7‒12.9 (± 1.10) 10.7‒13.3 (± 0.82) 5.6‒9.0 (± 1.21)
Glucose produced by enzymatic hydrolysis 4.0‒5.7 (± 0.59) 15.5‒20.3 (± 2.03) 13.9‒25.7 (± 5.03) 28.2‒39.1 (± 5.36)
Ethanol produced by yeast fermentationb 2.0‒2.9 (± 0.31) 7.1‒10.0 (± 1.18) 6.7‒12.7 (± 2.56) 13.3‒19.0 (± 2.64)
  1. All the data are reported as grams per 100 g of initial Miscanthus biomass
  2. aThe ranges are the results of four pairs of Miscanthus samples with standard deviation in brackets (± SD)
  3. bThe data are the results of 48-h simultaneous saccharification and fermentation by 2 g/L mixed-cellulases and 0.5 g/L S. cerevisiae