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Table 5 Path analysis direct effects of biomass traits on glucan conversion after 26-h pre-saccharification

From: Relationship between sugarcane culm and leaf biomass composition and saccharification efficiency

Trait Direct effect
Before pretreatmentb After pretreatment
Glucana   0.25
Xylan − 0.44 − 0.50
AIL − 0.10 − 0.65
ASL 0.43 0.30
S/G ratio − 0.38  
CA − 0.15  
FA − 0.11  
Ash − 0.01  
Residual effect 0.64 0.71
R 2 0.59 0.49
  1. AIL: acid-insoluble lignin; ASL: acid-soluble lignin; S/G ratio: syringyl to guaiacyl ratio; CA: p-coumaric acid, FA: ferulic acid
  2. aGlucan was removed from the “Before pretreatment” analysis because it was a major source of multicollinearity
  3. b“Before pretreatment” analysis was based on initial composition values and “After pretreatment” analysis was based on pretreated composition values (including the untreated treatment group)