Research Article

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

Table 2

Raman bands identified in the SERDS spectra of fat tissue from beef and pork and their vibrational assignment.

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

Quartz492494490
Quartz605606607
=C–H in-plane deformation726723727 [23]
C–C stretch, CH3 rock, C–O stretch842843843800–920 [24]
C–C stretch, CH3 rock, C–O stretch868869872800–920 [24]
C–C stretch, CH3 rock, C–O stretch890886887800–920 [24]
C–C stretch, CH3 rock, C–O stretch921919920800–920 [24]
Carotenoid960960–965 [20]
=C–H out of plane bend cis 970969970970–972 [23, 25, 26]
Carotenoid10031000–1014 [21]
C–C aliphatic out-of-phase stretch1061106010601060–1068 [25, 26]
C–C aliphatic stretch108410801076–1090 [23, 24, 26]
C–C aliphatic in phase stretch1126112511251119–1129 [23, 25]
Carotenoid11531151–1172 [21]
Carotenoid11881191–1193 [20]
Carotenoid12111213–1215 [20]
=C–H symmetric rock cis 1262126212631263–1266 [25, 27]
>CH2 in phase twist1297129712941295–1305 [24, 26]
CH3 symmetric deformation1368136813661368 [25]
>CH2 symmetric deformation1436143614361436–1443 [25, 28, 29]
CH3 antisymmetric deformation1457145914611455–1460 [25, 29]
Carotenoid15211511–1535 [21]
C=C cis stretch1651165016531650–1670 [26]
Carbonyl C=O stretch1740174017381730–1750 [24]