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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