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Table 1 GC analysis of pyrolytic aqueous condensate (PAC) treated with overliming at different conditions

From: Detoxification of a pyrolytic aqueous condensate from wheat straw for utilization as substrate in Aspergillus oryzae DSM 1863 cultivations

Substance A. oryzae growth limit [g/L]a c in original PAC [g/L]b c [g/L] in PAC after treatment at 100 °C and the following conditions…
Duration [h] 4 4 1.5
Initial pH 10 10 12
Hydroxide Ca(OH)2 NaOH NaOH
Acetate > 70 29.76   40.51 ± 0.19 38.35 ± 0.33 41.24 ± 1.87
Acetol 15 51.46   9.99 ± 0.91 11.50 ± 0.75 6.31 ± 0.42
Guaiacol 1 1.80   0.55 ± 0.01 0.67 ± 0.01 0.48 ± 0.00
Furfural 0.3 2.94   0.22 ± 0.03 0.31 ± 0.06 0.12 ± 0.00
Phenol 0.7 0.64   0.44 ± 0.00 0.46 ± 0.01 0.4 ± 0.00
2-Cyclopenten-1-one 0.0625 3.40   1.22 ± 0.01 1.11 ± 0.03 0.45 ± 0.00
  1. aDetermined by Dörsam et al. [19] as % (w/v). The concentration was converted into g/L assuming the density of water [2]. The only exception was acetate, for which, according to the results of Kövilein et al. [42], no growth limit was determined so far
  2. bGC/MS analysis performed by Thünen Institute of Wood Research in Hamburg for PAC that was neither pH adjusted nor filtered