|
Substrate
|
Occurrence of oxidation
|
|---|
|
Without ascorbic acid
|
With 1 mM ascorbic acid
|
|---|
|
GlcOS
#n
*a
|
XOS
#n
*b
|
GlcOS
#n
*
|
XOS
#n
*
|
|---|
|
Cellulose
|
|
Avicelc
|
−
|
−
|
+
|
+
|
|
RACc
|
−
|
−
|
+
|
+
|
|
Hemicellulose
|
|
Glucan
| | | | |
|
Xyloglucand
|
−
|
−
|
+
|
−
|
|
β-Glucan barley
|
−
|
−
|
+
|
−
|
|
β-Glucan oat spelt
|
−
|
−
|
+
|
−
|
|
Xylan
| | | | |
|
OSXe
|
−
|
−
|
−
|
−
|
|
BiWXe
|
−
|
−
|
−
|
−
|
|
WAXe
|
−
|
−
|
−
|
−
|
|
Oligosaccharides
|
|
Gluco-oligosaccharidesf
|
−
|
−
|
−
|
−
|
|
Xylo-oligosaccharidesf
|
−
|
−
|
−
|
−
|
|
Galactomannang
|
−
|
−
|
−
|
−
|
|
RAC/hemicellulose combination
|
|
RAC + BiWX
|
−
|
−
|
+
|
+
|
|
RAC + OSX
|
−
|
−
|
+
|
+
|
|
RAC + WAX
|
−
|
−
|
−
|
−
|
-
aGluco-oligosaccharides oxidized at the C1 (GlcOS
#n
) or C4 position (GlcOSn
*).
-
bXylo-oligosaccharides oxidized at the C1 (XOS
#n
) or C4 position (XOSn
*).
-
cRegenerated amorphous cellulose (RAC), crystalline cellulose (Avicel).
-
dXyloglucan from tamarind seed.
-
eOat spelt xylan (OSX), birchwood xylan (BiWX), wheat arabinoxylan (WAX).
-
fβ-(1 → 4)-linked gluco- and xylo-oligosaccharides, degree of polymerization 2–5.
-
gβ-(1 → 4)-linked-d-mannosyl backbone from guar (medium viscosity), purchased from Megazyme (Bray, Ireland).
