Table 1. Observed bands in the IR spectra (3800–600 cm−1) of the mycelium samples grown on the different feeding substrates.
| Assignment | Wavenumber (cm−1) (Intensitya) | ||||
|---|---|---|---|---|---|
| G. lucidum cellulose | G. lucidum PDB-cellulose | P. ostreatus cellulose | P. ostreatus PDB-cellulose | Mycelium component (main contribution) | |
| O-H stretching | 3360 (s) | 3342 (s) | 3315 (s) | 3294 (s) | Polysaccharides |
| CH2 asymmetric stretching | 2932 (m) | 2926 (s) | 2922 (m) | 2924 (m) | Lipids |
| CH2 symmetric stretching | 2855 (m) | 2855 (s) | 2855 (m) | 2853 (m) | Lipids |
| Ester C=O stretching | 1743 (m) | 1736 (sh, w) | 1734 (sh, w) | Lipids | |
| Amide I (β-turn) | 1686 (m) | 1668 (m) | 1670 (m) | 1670 (m) | Proteins |
| Amide I (β-sheet) | 1643 (m) | 1645 (m) | 1645 (m) | 1645 (m) | Proteins |
| Amide II | 1545 (w) | 1543 (w) | 1543 (w) | 1543 (w) | Proteins |
| CH2 bending | 1452 (m) | 1454 (m) | 1454 (m) | 1454 (m) | Lipids |
| C-H bending | 1375 (w) | 1373 (w) | 1371 (w) | 1371 (w) | Chitin |
| Amide III | 1275 (w) | 1282 (w) | Proteins | ||
| PO2- asymmetric stretching | 1248 (w) | 1248 (w) | 1252 (w) | 1248 (w) | Nucleic acids |
| C-C stretching + C-O stretching + C-H deformation | 1202 (w) | 1202 (w) | 1202 (w) | 1202 (w) | Polysaccharides |
| C-O…H stretching | 1148 (w) | 1148 (m) | 1142 (sh, m) | 1134 (sh, m) | Polysaccharides |
| C-O stretching | 1063 (vs) | 1068 (vs) | 1063 (vs) | 1067 (vs) | Polysaccharides |
| C-C stretching | 1044 (vs) | 1042 (vs) | 1030 (vs) | 1030 (vs) | Polysaccharides |
| Glucan β-anomer C-H bending | 889 (w) | 893 (w) | 893 (w) | 891 (w) | Polysaccharides |
| Mannan band | 800 (w) | 800 (w) | 800 (w) | 800 (w) | Polysaccharides |
as: strong, m: medium, w- weak, vs: very strong, vw: very weak, b: broad, sh: shoulder.