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

Journal of Wood Science

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

	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

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
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