Biomedical Engineering Reference
In-Depth Information
Table 8.1 ( Continued )
Major Characteristic Peak Frequencies Reported in the Literature
Reference
Number
Peak
Assignment
FT-IR
Raman
1452 cm −1
CH 2 CH 3 deformation
*
60
CH 2 deformation in lipids
*
16
1453 cm −1
Protein bands
*
24, 25
Umbrella mode of methoxyl (4)
*
6
C-H bending mode of structural
proteins
*
49
1453 cm −1
Structural protein modes of
tumours
*
26
CH 2 deformation, amide (III)
stretch
*
14
1454 cm −1
CH 2 stretching/CH 3 assymetric
deformation
*
15
Overlapping asymmetric CH 3
bending and CH 2 scissoring (is
associated with elastin, collagen,
and phospholipids)
*
42
Asymmetric methyl deformation
*
38
Collagen and phospholipids
*
26
1455 cm −1
C-O-H
*
48
Less characteristic, due to
aliphatic side groups of the
amino acid residues
*
50
δ as CH 3 of proteins
*
51
Symmetric bending modes of
methyl groups in skeletal
proteins
*
51
Deoxyribose
*
21
Umbrella mode of methoxyl (4)
*
6
δ(CH 2 )
*
43
CH 2 scissoring of proteins and
lipids
*
35
1455/6/7 cm −1
Asymmetric CH 3 bending modes
of the methyl groups of
proteins
*
66
δ[(CH 3 )] asym.
*
66, 68, 77,
80
1457 cm −1
Extremely weak peaks of DNA
and RNA; arises mainly from
the vibrational modes of methyl
and methylene groups of
proteins and lipids and amide
groups
*
64
Deoxyribose
*
21
δ as (CH 3 )
*
1
 
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