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
1335-45 cm
−1
CH
3
CH
2
wagging mode of
collagen
*
9
1335 cm
−1
δ(CH), ring (polysaccharides,
pectin)
*
7
Adenine (ring breathing modes of
the DNA/RNA bases)
*
4
A mixture of biochemicals
(nucleic acids and proteins due
to extracellular matrix)
*
35
Nucleic acids/proteins
*
35
Ring, C-NR2, cyclic C-C, C-N-H
stretch
*
14
1335/6 cm
−1
Guanine
*
21
1336 cm
−1
Polynucleotide chain (DNA
purine bases)
*
9
δ(CH
3
) δ(CH
2
) twisting, collagen
(protein assignment)
*
33
δ(CH), ring (polysaccharides,
cellulose)
*
7
1337 cm
−1
Amide III and CH
2
wagging
vibrations from glycine
backbone and proline side chain
*
24
Collagen
*
40
A, G (ring breathing modes in the
DNA bases), C-H deformation
(protein)
*
12
1337 cm
−1
Tryptophan
*
3
CH
2
/CH
3
wagging, twisting
and/or bending mode of
collagens and lipids
*
3
CH
2
/CH
3
wagging and twisting
mode in collagen, nucleic acid
and tryptophan
*
3
1337/8 cm
−1
CH
2
wagging
*
68, 70, 77
1338 cm
−1
Protein peak
*
17
Amide III, hydrated α-helix
δ(N-H) and ν(C-N),
desmosine/
*
17
Isodesmosine (elastin) (A and G
of DNA/RNA) in tumours
1339 cm
−1
Tryptophan
*
3
CH
2
/CH
3
wagging, twisting
and/or bending mode of
collagens and lipids
*
3
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