Skip to main content

Table 4 XPS analysis of HPAA–SH-pretreated poplar

From: Alkaline post-incubation improves the saccharification of poplar after hydrogen peroxide–acetic acid pretreatment

Pretreatment label O/C C1 (%) C2 (%) C3 (%)
HPAA40–SH0.1 0.39 ± 0.0 54.4 ± 0.3 32.9 ± 0.6 12.7 ± 0.3
HPAA60–SH0.1 0.42 ± 0.0 49.3 ± 0.1 36.0 ± 0.5 14.6 ± 0.4
HPAA80–SH0.1 0.47 ± 0.0 43.8 ± 0.3 41.5 ± 0.0 14.7 ± 0.3
HPAA100–SH0.1 0.46 ± 0.0 45.6 ± 0.0 38.1 ± 0.3 16.3 ± 0.3
HPAA40–SH1.0 0.40 ± 0.0 53.4 ± 0.2 34.9 ± 0.8 11.7 ± 0.6
HPAA60–SH1.0 0.44 ± 0.0 49.4 ± 0.1 37.5 ± 0.2 13.1 ± 0.1
HPAA80–SH1.0 0.50 ± 0.0 43.6 ± 0.1 41.5 ± 0.1 15.0 ± 0.0
HPAA100–SH1.0 0.50 ± 0.0 40.6 ± 0.2 43.0 ± 0.3 16.5 ± 0.0
  1. In HPAA–SH process, HPAA pretreatment conditions were 40%–100% HPAA (v/v) at 60 °C for 2 h and alkaline post-incubation conditions were 0.1% and 1.0% sodium hydroxide at 50 °C for 1 h