Table 3:
Chemical shifts values of carbon atoms in D-galacturonic acid residues in the
13
C NMR spectrum of PS-s (
δ
, ppm, D
2
O) and of [
4
,
5
].
Residue
C-1
C-2
C-3
C-4
C-5
C-6
C-6–(OCH
3
)
–O
C
H
3
4)-
α
-D-Gal
p
A-(1
of PS-s
101.9
68.9
72.1
79.2
73.4
176.2
172.2
54.4
4)-
α
-D-Gal
p
A-(1
of apple pectin [
5
]
100.7
69.4
69.8
79.4
72.2
175.2
—
—
4)-
-D-Gal
p
A-(1
[
4
]
103.4
72.4
74.3
78.3
76.0
175.2
—
—