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Table 2 Tentative peak assignment of spectral bands in FTIR spectra of fungi [20]

From: Biochemical profiling, prediction of total lipid content and fatty acid profile in oleaginous yeasts by FTIR spectroscopy

Peak nr. Frequency (cm−1) Peak assignment Main biomolecules
1 3010 =C–H stretching Lipid
2 2955 C–H assymetric stretching of –CH3 Lipid
3 2925 Stretching of > CH2 of acyl chains (assymetric) Lipid
4 2850 Stretching of CH2 of acyl chains (symetric) Lipid
5 1745 C=O stretching Lipid
6 1680–1640 Amide I band (C=O stretching) Protein
7 1580–1520 Amide II (CONH bending) Protein
8 1465 CH2 deformtion Lipid
9 1410 Amide III band (C–N stretching) Protein
10 1380 CH3 bending Lipid
11 1240–1265 P=O stretching (assymetric) of > PO2 phosphodiesters Polyphosphate, phospholipid
12 1155 C–O–C stretching Lipid
13 1080 P O stretching (symetric) of > PO2 Polyphosphate, phospholipid
14 900–1200 C–O and C–C stretching,  C–O–H and C–O–C deformation Carbohydrate
15 875 P–O–P stretching Polyphosphate, phospholipid
16 725 CH2 deformation Lipid