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Official Journal of the Japan Wood Research Society

Table 3 Thioacidolysis-based lignin compositional analysis of original artificial diets and fecal residues of N. hirtum larvae

From: Effects of dietary variation on lignocellulose degradation and physiological properties of Nicobium hirtum larvae

 

Low-starch diet (LS)

Medium-starch diet (MS)

High-starch diet (HS)

Original

Digested

Original

Digested

Original

Digested

Lignin monomer composition (% per S + G + H)

 Syringyl, S

55.1 ± 0.4

55.7 ± 0.1

54.8 ± 0.3

55.2 ± 0.3

55.2 ± 0.7

55.3 ± 0.5

 Guaiacyl, G

44.8 ± 0.4

44.1 ± 0.1

45.1 ± 0.3

44.6 ± 0.3

44.6 ± 0.7

44.5 ± 0.5

 p-Hydroxyphenyl, H

0.1 ± 0.0

0.1 ± 0.0

0.1 ± 0.0

0.1 ± 0.0

0.1 ± 0.0

0.1 ± 0.0

 S/G ratio

1.23 ± 0.2

1.26 ± 0.1

1.22 ± 0.2

1.24 ± 0.2

1.24 ± 0.4

1.24 ± 0.3

  1. Thioacidolysis was performed on cell wall residue (CWR) samples prepared by sequential extraction of the original diet and fecal residue samples collected after 6-month feeding. Values are mean ± standard deviation from three independent runs (n = 3). No statistical significancy (Student’s t-test, p < 0.05) was detected between the lignin-derived monomers released from the fecal residues and original diets
  2. S syringyl-type monomer, G guaiacyl-type monomer, H p-hydroxyphenyl-type monomer, LS low-starch diet, MS medium-starch diet, HS high-starch diet