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

Table 1 Composition of cell-wall dehydrogenation polymers (CWDHPs) and their alkali-insoluble residues

CWDHP	Alkaline pretreatment (°C)	Concentration in CWDHP or alkali-insoluble residues (%)
		Lignin	Glucose	Xylose	Arabinose	Galactose
Control	None	20.2a^a	29.6 g	x11.5b	16.2b	7.3bc
	70	16.2b	32.0f	11.4b	16.5b	8.0a
	100	17.6b	34.0e	11.4 b	16.5b	7.1d
	130	16.9b	35.9d	12.9a	18.3a	5.6e
EGCG	None	18.4ab	30.4 fg	11.5b	16.0b	7.4b
	70	8.9c	40.9c	11.6b	14.9 c	7.1 cd
	100	6.5d	43.5b	9.9c	12.3d	7.2 cd
	130	5.5d	48.8a	9.7c	10.8e	4.4f
Analysis of variance
CWDHP		†	***	***	***	***
Pretreatment		***	***	**	**	***
CWDHP X Pretreatment Interaction		***	***	***	***	***

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.
^a Means within columns with unlike letters differ (P < 0.05).
† P < 0.1; * P < 0.05; ** P < 0.01, *** P < 0.001.

ISSN: 2731-3654