Skip to main content

Advertisement

Table 1 Chemical composition of untreated and preprocessed poplar biomasses

From: Removal of non-structural components from poplar whole-tree chips to enhance hydrolysis and fermentation performance

  Glucan (%) Xylan (%) Total sugars* (%) Total lignin (%) Acetic acid (%) Total ash (%) Extractives (%)
Untreated1 40.8 ± 1.5a 14.0 ± 1.2a 58.3 ± 2.5a 25.8 ± 1.1a 5.5 ± 0.6a 2.0 ± 0.1a 10.6 ± 1.3a
Neutral2 40.5 ± 0.8a 15.1 ± 0.3a 59.4 ± 1.1a 26.2 ± 0.2a 5.6 ± 0.3a 1.5 ± 0.1b 5.2 ± 0.6b
Acidic-neutral3 40.8 ± 1.3a 15.8 ± 0.7b 59.9 ± 2.1a 26.6 ± 1.5a 4.9 ± 0.8a 0.8 ± 0.1c 6.1 ± 2.3b
Acidic4 42.8 ± 2.1a 13.1 ± 0.6c 58.8 ± 2.9a 28.6 ± 1.4a 4.7 ± 0.0a 0.6 ± 0.2c n.a
  1. Data represented as the mean of triplicate measurements with standard deviation, extractives as duplicates. Different letters indicate statistically significant differences (p < 0.05) within in each column by Tukey’s test
  2. * Total sugars include glucan, xylan, arabinan, galactan, and mannan
  3. 1Untreated: unwashed biomass prior to pretreatment
  4. 2Neutral: biomass washed with water prior to pretreatment
  5. 3Acidic-neutral: biomass treated with dilute acid and then washed with water prior to pretreatment
  6. 4Acidic: biomass treated with dilute acid prior to pretreatment