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Table 2 Raman shifts of peaks and the characteristic assignments

From: Surface-enhanced Raman spectroscopy of blood serum based on gold nanoparticles for the diagnosis of the oral squamous cell carcinoma

Raman shift (cm−1)

Peak assignment

294

Au-S band

446–476

Cholesterol

548

S-S disulfide stretching in Proteins

726

Hypoxanthine

745

Thymine in DNA

933

C-C stretching mode, C-C αhelix in proteins

1136–1139

C-N stretch in D-mannons

1263

CH bending in lipids

1328

CH vibration in DNA/RNA, CH2 twisting in lipids

1371

Guanine in DNA, Tryptophan in proteins

1445

CH2, CH3 bending in proteins and lipids

1491

CH2 bending

1541–1542

C-N stretching, Amide II

1602–1607

C = C band in Phenylalanine or Tyrosine