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Table 2 Correlations between structural properties and digestibility

From: Effect of mechanical disruption on the effectiveness of three reactors used for dilute acid pretreatment of corn stover Part 2: morphological and structural substrate analysis

Parameter Glucan release (%) Xylan content (%) Lignin content (%) Degree of polymerization Particle size Aspect ratio Cell wall thickness Surface roughness Delamination/ porosity
Untreated 24.0 22.0 12.3 2,000 0.15 1.78 1.29 7.60 3.41
ZC 68.7 8.8 24.2 1,750 0.08 1.90 3.49 10.37 5.62
SG 88.0 4.8 25.0 1,650 0.08 1.67 2.60 17.53 20.01
HS 95.2 3.2 24.8 1,850 0.07 1.49 2.30 17.61 26.57
Correlation coefficient (R)   −1.00 0.87 −0.28 −0.97 −0.98 −1.00 0.97 1.00
Correlation coefficient squared (R2)   1.00 0.76 0.08 0.94 0.97 1.00 0.94 1.00
  1. HS, horizontal screw; SG, steam gun; ZC, ZipperClave®.