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Table 2 Proportion of lignin removed and recovery of alkali-insoluble residues and cell wall sugars from cell wall dehydrogenation polymers (CWDHPs)

From: Epigallocatechin gallate incorporation into lignin enhances the alkaline delignification and enzymatic saccharification of cell walls

CWDHP Alkaline pretreatment (°C) Lignin extracted (%) Recovered (%)
    Residue Glucose Xylose Arabinose Galactose Total sugars
Control 70 43.7d 70.4a 76.0a 69.7a 72.2a 77.8a 74.2a
  100 49.7d 57.6b 66.1b 56.7b 59.1b 56.2b 61.6b
  130 61.9c 45.6c 55.2c 51.1c 51.7c 35.2c 51.5c
EGCG 70 72.4b 56.7b 76.4a 57.5b 52.7c 54.5b 64.9b
  100 87.1a 36.3d 52.1c 31.2d 28.0d 35.2c 40.7d
  130 92.4a 25.6e 41.2d 21.6e 17.2e 15.3d 29.0e
Analysis of variance        
CWDHP * *** *** *** *** *** ***
Pretreatment *** *** *** *** *** *** ***
CWDHP X Pretreatment Interaction NS * ** *** *** NS **
  1. The CWDHP were formed with monolignols (control) or with monolignols plus epigallocatechin gallate (EGCG) and pretreated with 0.075 M sodium hydroxide (15% w/w loading) at various temperatures.
  2. a Means within columns with unlike letters differ (P < 0.05).
  3. NS not significant; * P < 0.05; ** P < 0.01, *** P < 0.001.