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Table 2 Yields and sugar compositions (relative %, w/w) of hemicellulosic fractions obtained from sequential alkaline extractions of delignified ryegrass

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

Samples Yielda,c (%) Sugar compositionb,c (relative %)
Ara Gal Glu Xyl Man GluA GalA
H0.15% 7.3 ± 0.3 29.4 ± 0.9 9.4 ± 0.3 10.3 ± 0.3 45.1 ± 1.5 1.1 ± 0.0 2.7 ± 0.0 2.0 ± 0.0
H0.3% 5.8 ± 0.2 29.8 ± 1.0 10.2 ± 0.3 8.8 ± 0.2 46.2 ± 1.5 ND 2.0 ± 0.0 3.0 ± 0.1
H0.5% 33.9 ± 1.6 28.6 ± 0.9 10.3 ± 0.3 7.8 ± 0.2 48.1 ± 1.5 1.0 ± 0.0 2.5 ± 0.0 1.6 ± 0.0
H1.0% 13.9 ± 0.6 29.0 ± 0.9 8.4 ± 0.2 3.7 ± 0.1 52.8 ± 1.6 1.1 ± 0.0 1.8 ± 0.0 3.2 ± 0.1
H1.5% 11.3 ± 0.5 22.7 ± 0.7 6.4 ± 0.2 12.8 ± 0.4 54.2 ± 1.7 ND 1.0 ± 0.0 2.9 ± 0.0
H2.5% 8.7 ± 0.4 18.3 ± 0.6 3.9 ± 0.1 13.5 ± 0.4 62.5 ± 2.1 ND 0.6 ± 0.0 1.2 ± 0.0
  1. aYields of the hemicelluloses, calculated as [(the weight of the hemicelluloses obtained in each alkaline extraction)/(the weight of the hemicelluloses in the delignified ryegrass)] × 100%;
  2. bAra, arabinose; Gal, galactose; Glu, glucose; Xyl, xylose; Man, mannose; GalA, galacturonic aicd; GluA, glucuronic aicd; ND, not detected
  3. cThe values are mean ± SD of three parallel determinations
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