Biotechnology for Biofuels and Bioproducts

Table 1 Yields and chemical components of cellulose-rich substrates obtained from sequential alkaline extractions of delignified ryegrass

From: Enzymatic response of ryegrass cellulose and hemicellulose valorization introduced by sequential alkaline extractions

Samples	Yield^a,c (%)	Substrates composition^b,c (%)
Samples	Yield^a,c (%)	Ara	Gal	Glu	Xyl	Man	GalA	GluA	KL	ASL
R_pulp	100.0 ± 0.6	7.7 ± 0.2	2.6 ± 0.0	47.8 ± 1.5	19.7 ± 0.6	0.1 ± 0.0	2.3 ± 0.0	0.3 ± 0.0	3.2 ± 0.1	0.7 ± 0.0
R_0.15%	73.0 ± 3.3	7.1 ± 0.2	1.8 ± 0.0	51.1 ± 1.7	18.2 ± 0.6	0.1 ± 0.0	2.7 ± 0.0	0.4 ± 0.0	1.8 ± 0.0	0.5 ± 0.0
R_0.3%	68.9 ± 3.2	6.6 ± 0.2	1.2 ± 0.0	52.7 ± 1.6	17.7 ± 0.5	0.1 ± 0.0	2.4 ± 0.0	0.3 ± 0.0	1.8 ± 0.0	0.4 ± 0.0
R_0.5%	63.9 ± 2.9	5.1 ± 0.1	1.2 ± 0.0	54.7 ± 1.8	17.0 ± 0.5	0.1 ± 0.0	2.1 ± 0.0	0.2 ± 0.0	1.7 ± 0.0	0.4 ± 0.0
R_1.0%	58.4 ± 2.6	4.3 ± 0.1	1.0 ± 0.0	57.9 ± 1.8	16.7 ± 0.5	0.2 ± 0.0	0.5 ± 0.0	0.2 ± 0.0	1.6 ± 0.0	0.3 ± 0.0
R_1.5%	50.8 ± 2.4	3.8 ± 0.1	1.0 ± 0.0	59.0 ± 1.8	16.1 ± 0.5	0.2 ± 0.0	0.4 ± 0.0	0.2 ± 0.0	0.9 ± 0.0	0.3 ± 0.0
R_2.5%	27.7 ± 1.3	3.3 ± 0.1	0.8 ± 0.0	62.2 ± 2.0	14.3 ± 0.4	0.2 ± 0.0	0.4 ± 0.0	0.2 ± 0.0	0.4 ± 0.0	0.3 ± 0.0

^aYields of cellulose-rich substrates obtained from the delignified ryegrass by sequential alkaline extractions, calculated as [(the weight of cellulose-rich substrate obtained after each alkaline extraction)/(the weight of the delignified ryegrass used for sequential alkaline extractions)] × 100%;
^bAra, arabinan; Gal, galactan; Glu, glucan; Xyl, xylan; Man, mannan; GalA, galacturonic acid; GluA, glucuronic acid; ASL, acid-soluble lignin; KL, Klason lignin
^cThe values are mean ± SD of three parallel determinations

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