FTIR and Raman Characteristic Peak Frequencies in Biological Studies - Vibrational Spectroscopy for Tissue Analysis - page 242

Table 8.1 ( Continued )
Major Characteristic Peak Frequencies Reported in the Literature

Reference
Number Peak Assignment FT-IR Raman

1153 cm −1 Carbohydrates peak for solutions * 24, 30

Stretching vibrations of hydrogen-
bonding C-OH groups

* 64

ν C-O absorbance of glycogen * 61

1155 cm −1 C-C (and C-N) stretching of

proteins (also carotenoids)

* 9, 10

Glycogen * 24

C-O stretching vibration * 38

ν(C-C): Diagnostic for the
presence of a carotenoid
structure, most likely a cellular
pigment

* * 22

1156 cm −1 C-C, C-N stretching (protein) * 12

(-C-C-) stretching of carotenoid * 60

1156/7 cm −1 Carotenoids (absent in normal

tissue)

* 45

1157 cm −1 In-plane vibrations of the

conjugated = C-C=

* 81

β-carotene accumulation (C= C
stretch mode)

* 49

1157/9 cm −1 In-plane CH bend, ring, cyclic

stretch

* 14

1159-74 cm −1 νC-O of proteins and

carbohydrates

* 51

1160 cm −1 CO stretching * 64

C-C stretching in proteins * 16

1161 cm −1 Stretching vibrations of hydrogen

bonding C-OH groups

* 64

Deformative vibrations of
quinoid ring

* 28

1161/2 cm −1 Mainly from the C-O stretching

mode of C-OH groups of serine,
threosine, and tyrosine of
proteins)

* 66

ν(CC), δ(COH), ν(CO) stretching * 77, 82

1162 cm −1 Stretching modes of the C-OH

groups of serine, threonine, and
tyrosine residues of cellular
proteins

* 51

δ(C-O-C), ring (polysaccharides,
cellulose)

* 7

1163 cm −1 Tyrosine (collagen type I) * 3

Tyrosine * 3

CH' 9 , CH 7 , CH' 7 deformations * 6