Research Article

Fluorescence Rejection by Shifted Excitation Raman Difference Spectroscopy at Multiple Wavelengths for the Investigation of Biological Samples

Table 3

Raman bands identified in the SERDS spectra of connective tissue from beef and pork and their vibrational assignment, Hyp: Hydroxyproline, Pro: Proline, Phe: Phenylalanine, Trp: Tryptophan, Tyr: Tyrosine.

Vibrational assignment783 nm excitation671 nm excitation488 nm excitationLiterature value
[References]

Quartz492494489
Quartz602602602  
CH2 rocking721723730 [30]
Trp ring breathing757757753756 [30]
CH2 rocking782781783779 [30]
𝜈 (C–O–C); 𝜈 (C–C) of backbone814813817812–821 [3133]
𝜈 (C–C) of Pro ring853853852852–860 [32, 33]
𝜈 (C–C) of Hyp ring875875873873–884 [31, 34]
𝜈 (C–C) of Pro ring918919919920–925 [32, 33]
𝜈 (C–C) of protein backbone939938937936–938 [32, 33]
Carotenoid963960–965 [20]
𝜈 (C–C) of residue970969957–961 [30, 31]
Phe1002100210021003–1006 [32, 33]
Carotenoid10021000–1014 [21]
Phe, Pro103110321032–1037 [31, 33]
Bend of carboxyl OH106010581062–1065 [31]
𝜈 (C–N)110010991093–1101 [31, 35]
𝜈 (C–N) of protein1126112511241122–1125 [36]
Carotenoid11541151–1172 [21]
𝜈 CH2, 𝜌 CH3115911621163 [30]
Carotenoid11881191–1193 [20]
Hyp, Tyr120312021202-1211 [33, 35]
Carotenoid12111213–1215 [20]
Amide III1240124012431239–1248 [32, 33]
Amide III1271127312701263–1273 [30, 33]
CH2 twisting1318131713141314–1319 [31, 33]
CH2 wagging1342134113401340–1343 [31]
CH2 deformation1378137713741379 [31]
𝜈 s (COO-)1424142414231416–1427 [32, 35]
𝛿 (CH3, CH2)1450144814481447–1452 [32, 33, 36]
𝛿 (CH3, CH2)1461146414681461–1464 [32, 33]
Carotenoid15211511–1535 [21]
Phe, Tyr1603159915981603–1606 [32, 36]
Amide I163016291636–1642 [32, 33]
Amide I1662166016581650–1680 [30]