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
540 cm −1
ν(S-S) trans-gauche-trans (amino
acid cysteine)
*
7
548 cm −1
Cholesterol
*
2
540 cm −1
Glucose-saccharide band
(overlaps with acyl band)
*
2
573 cm −1
Tryptophan/cytosine, guanine
*
9
576 cm −1
Phosphatidylinositol
*
2
583/6 cm −1
OH out-of-plane bending (free)
*
6
589 cm −1
Symmetric stretching vibration of
ν 4 PO 4 3− (phosphate of HA)
*
3
Glycerol
*
2
596 cm −1
Phosphatidylinositol
*
2
600-800 cm −1
Nucleotide conformation
*
12
600-900 cm −1
CH out-of-plane bending
vibrations
*
13
606 cm −1
Ring deformation of phenyl(1)
*
6
607 cm −1
Glycerol
*
2
608 cm −1
Ring deformation of phenyl(1)
*
6
Cholesterol
*
2
Has no identifiable theoretical
match; it may be assigned to
in-plane N-C = O bend
*
14
614 cm −1
Cholesterol ester
*
2
617 cm −1
Thymine (ring breathing modes
of the DNA/RNA bases)
*
4
618 cm −1
C-C twisting (protein)
*
12
620 cm −1
C-C twist aromatic ring (one of
C-C vibrations to be expected in
aromatic structure of xylene)
*
15
621 cm −1
C-C twisting mode of
phenylalanine
*
9, 10, 16
622 cm −1
Protein peak
*
17
C-C twisting mode of
phenylalanine in tumours
*
17
630 cm −1
Glycerol
*
2
630-70 cm −1
ν(C-S) gauche (amino acid
methionine)
*
7
635 cm −1
OH out-of-plane bend
(associated)
*
5
640 cm −1
C-S stretching and C-C twisting
of proteins-tyrosine
*
12
642 cm −1
Protein peak
*
17
( Continued )
 
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