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. 2020 Feb 7;10:2155. doi: 10.1038/s41598-020-58848-0

Table 2.

Peak position and assignment of major Raman bands observed in the tissues under analysis. Peaks intensity: w = weak, m = medium, s = strong, vs = very strong. Ref. 2325.

Raman shift (cm−1) Band assignment EC CS G1 CS G2 CS G3
428 (m) Symmetric stretching of phosphate (HA)
435 (w) Pyruvate
454 (w) Ring torsion phenyl
461 (m) Glucosamine
481 (w) DNA
486–90 (w) Glycogen
499 (w) Glutamate
509 (w) S-S disulphide stretching band of collagen
519 (s) Phosphatidylinositiol
527 (s) N-Acetyl-D-Glucosamine
540 (s) ν(S-S) Cysteine
559 (w) Coenzyme A
585 (s) OH out of plane bending
604 (m) Glutamate
621 (w) C-C twisting mode of Phe
646 (w) C-C twisting of Tyr
728 (vs) Proline (collagen assignment)
737 (vs) Thymine (DNA)
776 (w) Phosphatidylinositiol
815 (m) Proline
830 (s) Proline
847 (m) C-O-C skeletal mode
969–70 DNA
1003 (vs) Phe
1035 (m) Collagen
1056 (m) Lipids
1065–7 (s) Proline
1096 (m) Phosphodioxy (PO2)
1106 (m) Phe in proteins
1123 (m) C-N (protein assignment)
1128–9 (m) C-N (C-C) stretching
1170 (m) Tyr
1206 (s) difference in collagen content
1226 (s) Amide III
1254 (s) C-N in plane stretching
1268 (w) Amide III (collagen assignment)
1313 (m) CH3CH2 twisting mode of lipids
1346 (m) CH3CH2 wagging mode of lipids
1373 (m) Ring breathing modes of DNA/RNA bases
1380 (s) Glycosaminoglycans
1398 (w) C = O symmetric stretching
1450 (s) CH2 bending mode in malignant tissues
1485–8 (w) Ring breathing modes in DNA
1588 (s) Phe, hydroxyproline
1595 (s) (CO2) antisymmetric stretching
1609 (m) Cytosine (DNA)
1622 (m) Trp
1729 (m) C = O ester group