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Table 5 Glucose yield/recovery and combined sugar yield after pretreatment and enzymatic hydrolysis of bagasse samples

From: Impact of cultivar selection and process optimization on ethanol yield from different varieties of sugarcane

Run Enzymatic hydrolysis bOverall glucose recovery (%) cCombined sugar yield (g/100 g RM)
Glucose yield (g/100 g RM) aDigestibility (%)
55 70 74 120 55 70 74 120 55 70 74 120 55 70 74 120
Untreated 11.7 12 9.2 8.9 27.5 28.6 21.7 20.2 - - - - 15.7 17 13 12.5
1 26.7 25 21 20.8 66.4 63.6 50.5 48.6 68.1 65.0 56.7 50.0 54.3 48 40.6 39.6
2 33.9 36 29 29 87.6 97.0 71.9 69.3 86.9 96.3 73.2 70.5 59.6 62 51.8 47.6
3 30.6 34 27 29.6 78.6 91.6 68.4 72.3 79.9 91.4 70.9 72.7 58.6 60 48.8 48.3
4 36.5 35 31 32.2 96.6 97.1 81.1 81.1 96.3 96.3 80.3 81.8 60.3 55 49.3 45
5 27.4 26 20 24.5 67.5 64.8 49.7 57.5 68.1 65.0 52.0 59.1 51.5 51 42.2 45.3
6 38.7 33 31 29.6 100.0 92.9 81.5 72.6 98.7 91.4 82.7 72.7 58.7 55 51.2 44
7 29.9 33 21 24.3 74.3 84.5 50.8 56.8 75.2 86.6 52.0 59.1 58 58 42.4 42.4
8 37.5 36 30 31.9 99.2 97.2 76.8 77.1 98.7 96.3 78.0 79.5 62.3 62 52.7 47.4
9 38 35 28 27.7 99.3 92.4 70.9 67.4 96.3 93.9 70.9 68.2 64.8 65 53.3 50.3
10 37.8 35 28 27.4 95.4 92.8 70.1 65.8 96.3 93.9 73.2 68.2 65.5 64 52.6 49.1
11 38.4 35 28 27.3 97.4 94.4 71.2 65.6 98.7 93.9 70.9 68.2 66.1 63 52.1 48.3
  1. The acid concentration at all pretreatment conditions was kept constant at 0.5% (w/w).
  2. aDigestibility was calculated as glucose yield divided by the potential glucose in the WIS expressed in percentage.
  3. bOverall glucose recovery is the sum of glucose obtained after pretreatment and enzymatic hydrolysis divided by potential glucose in the native material expressed in percentage.
  4. cCombined sugar yield is the sum of glucose, xylose and arabinose obtained after pretreatment and enzymatic hydrolysis.
  5. RM, raw material; WIS, water insoluble solid.