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Table 2 Tentative Raman spectral peak assignments for metabolites in plants [50]

From: Surface-enhanced Raman scattering spectra revealing the inter-cultivar differences for Chinese ornamental Flos Chrysanthemum: a new promising method for plant taxonomy

Compounds

Representatives

Peaks (cm−1)

Assignment

Amino acids

Cysteine

512

ν(S–S) g g g

 

Methionine

630–670

ν(C–S) g

  

700–745

ν(C–S) t

Proteins

Disordered structure (solvated)

1245

 

Lipids/fatty acids

 

800–1100

ν(C–C)

Disaccharides

Sucrose

1462

δ(CH2)

Bicyclic monoterpenes

1,8-Cineol

652

δ(ring)

 

Sabinene

652

δ(ring)

Tetraterpenes

Crocetin

1020

ρ(C–C)

Chlorophyll

Chlorophyll a, b

1326

 
 

Chlorophyll a

1549

 

Carotenoid

 

956–957 [32]

 
  1. Vibrations: ν—stretching; δ—deformation; ρ—in-plane rocking. Conformations: ggauche; ttrans