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Table 4 Percentages of pyrolysates from termite-chewed and control sample at 510°C.

From: Advanced biorefinery in lower termite-effect of combined pretreatment during the chewing process

  Name Molecular formula Molecular weight Retention time (min) Controla (%) Chewed softwood (%)
1 Furfural C5H4O2 96 5.324 1.21 0.88
22 3-butyldihydro-2(3H)-furanone C8H14O2 142 8.340 0.50 NA
23 2,5-dimethyl-4-hydroxy-3(2H)-furanone C6H8O3 128 11.442 0.57 0.26
24 5-(hydroxymethyl)-2-furancarboxaldehyde C6H6O3 126 15.191 1.96 0.37
25 b α-D-glucopyranoside, O-α-D-glucopyranosyl-(1.fwdarw.3)-β-D-fructofuranosyl C18H32O16 504 16.226 1.49 NA
26 c 3-(1-cyclopentenyl) furan C9H10O 134 17.555 0.12 NA
27 α-D-glucopyranoside, α-D-glucopyranosyl C12H22O11 342 20.182-20.432 3.02 NA
12 d Levoglucosan C6H10O5 162 21.200-21.511 4.33 9.02
  1. aMean of three replicate analyses; bcleavage between cellulose and hemicelluloses molecules; cprefer degradation of hemicelluloses units; dprobable depolymerization of the cellulose fiber. See the structures of the labeled pyrolysates in Figure 3.