Table 1

Chemical shift assignments for 1H-NMR and 13C-NMR spectra of agaro-oligosaccharides
Unit
 Chemical shifts (ppm)




C-1
 C-2
 C-3
 C-4
 C-5
 C-6
Carbon
 G a
 102.3
 70.6
 82.3
 68.7
 75.2
 61.2

A b
 98.1
 69.9
 79.7
 77.1
 75.5
 69.4
Proton
 G
 4.39
 3.79
 3.6
 4.12
 3.55
 3.63 c/3.67 d

A
 4.97
 3.96
 4.37
 4.48
 4.4
 3.84 e/4.06 f

a galactose.

b anhydrogalactose.

c A-6 exo proton

d A-6'endo proton

e G-6 proton

f G-6' proton

Chen et al. Nutrition Journal 2006 5:31   doi:10.1186/1475-2891-5-31