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Table 1 Composition of switchgrass samples

From: Gaseous ammonia pretreatment lowers the required energy input for fine milling-enhanced enzymatic saccharification of switchgrass

Lot

UT-2 untreated (%)

UT-4a untreated (%)

UT-4b untreated (%)

UT-4b after 150–160 °C, 1 h with 10 wt% NH3 (%)

UT-5 untreated (%)

Glucan

37.61 ± 1.43

36.29 ± 0.19

34.10 ± 0.62

33.76 ± 0.38

35.95 ± 0.96

Xylan

25.67 ± 1.50

22.75 ± 0.95

20.52 ± 0.35

20.86 ± 0.20

24.53 ± 0.28

Arabinan

3.00 ± 0.12

2.77 ± 0.10

2.75 ± 0.19

3.03 ± 0.19

2.92 ± 0.10

Lignin

23.4

19.5

17.6

18.29

18.3

  1. Compositional analyses of treated and untreated switchgrass samples were carried out as described in the “Methods” section and are expressed as percent of dry matter. The variation is the standard deviation of three or more measurements