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Table 4 General band assignments in FTIR spectra of reproductive adipose tissue, liver and muscle tissue [55]

From: ATR-FTIR spectroscopy reveals genomic loci regulating the tissue response in high fat diet fed BXD recombinant inbred mouse strains

Peak No Wavenumber (cm-1) Definition of the spectral assignment
  Epididymal adipose tissue Liver tissue Muscle tissue  
1 3006 _ _ Olefinic=CH stretching vibration: lipid (mainly unsaturated)
2 2957 2963 2961 CH3 asymmetric stretch: mainly lipid with the little contribution from proteins, carbohydrates, nucleic acids
3 2922 2927 2927 CH2 asymmetric stretch: mainly lipid with the little contribution from proteins, carbohydrates, nucleic acids
4 2853 2854 2854 CH2 symmetric stretch: mainly lipid with the little contribution from proteins, carbohydrates, nucleic acids
5 1743 1745 1741 Ester C=O stretch: triglicerides, cholesterol esters
6 1646 1638 1638 Amide I (protein C=O stretch)
7 1550 1547 1550 Amide II (protein N–H bend, C–N stretch)
8 1464 _ _ CH2 bending vibration: lipids
9 _ 1455 1457 CH2 bending vibration: lipids
10 1340 1340 1340 CH2 side chain vibrations of collagen
11 1320 _ _ collagen
12 1280 _ 1282 collagen
13 1160 _ _ stretching vibration of the C-O bond of glycerol skeleton of triglycerides
14 _ 1154 _ C-O stretch glycogen
15 _ 1081 1081 C-O stretch: glycogen
16 1047 1044 1046 C-O stretching band coupled with C-O bending of C-OH groups of glycogen