Table 2.

Raman band assignment; ν: stretching, δ: deformation.

Band position (cm−1)	Vibration
960	ν(${\text{PO}}_4^{3-}$)	Hydroxyapatite
1003	ν(C-C) ring	Phenylalanine
1090	ν(C-C) skeletal; ν(${\text{PO}}_2^{-}$)	Acyl chain lipids; phospholipids
1157	ν(C = C)	Carotenoids
1240	Amide III	Proteins
1297	δ(CH2)	Lipids
1438	δ(CH2)	Lipids
1521	ν(-C = C-)	Carotenoids
1660	Amide I	Proteins
2708	ν (CH2) olefinic	Lipids
2847	ν (CH2) aliphatic	Acyl chain lipids
2945	ν (CH3)	Proteins