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

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