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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 Yielda,c (%) Substrates compositionb,c (%)
Ara Gal Glu Xyl Man GalA GluA KL ASL
Rpulp 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
R0.15% 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
R0.3% 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
R0.5% 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
R1.0% 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
R1.5% 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
R2.5% 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
  1. 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%;
  2. bAra, arabinan; Gal, galactan; Glu, glucan; Xyl, xylan; Man, mannan; GalA, galacturonic acid; GluA, glucuronic acid; ASL, acid-soluble lignin; KL, Klason lignin
  3. cThe values are mean ± SD of three parallel determinations
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Biotechnology for Biofuels

ISSN: 1754-6834

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