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
1665-80 cm
−1
C= C stretch band for the
nonconjugated
trans
configuration
*
34
1666 cm
−1
Collagen
*
97
1667 cm
−1
Protein band
*
24, 25
C= C stretching band
*
45
α-helical structure of amide I
*
20
Structural protein modes of
tumours
*
27
Carbonyl stretch (C= O)
*
5
1669 cm
−1
Carbonyl stretch (C= O)
*
5
Cholesterol ester
*
2
C= C stretch band (
trans
form)
*
58
νC= O
*
1
1670 cm
−1
Amide I
*
99
C= C stretching vibrations
*
25
Cholesterol and its esters
*
49
C= C stretching vibration mode of
steroid ring
*
49
Amide I (anti-parallel β-sheet)
*
*
7
ν(C= C)
trans,
lipids, fatty acids
*
*
7
1671 cm
−1
νC= O
*
1
1672 cm
−1
C= C stretch
*
6
Amide I band (C= O stretch
coupled to a N-H bending)
*
2
Ceramide
*
*
2
1673 cm
−1
Amide I
*
15
C= O
*
1
1674 cm
−1
C= C stretch vibration
*
2
Cholesterol
*
2
1676 cm
−1
Amide I (β-sheet)
*
43
1678 cm
−1
Bound and free NADH
*
54
1679 cm
−1
Stretching C= O vibrations that
are H-bonded. (Changes in the
C= O stretching vibrations could
be connected with destruction of
old H-bonds and creation of the
new ones.)
*
48
C= O guanine deformation N-H
in plane
*
48
C= O
*
1
(
Continued
)
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