Xylose is a sugar first isolated from wood, and named for it. It is classified as a monosaccharide of the aldopentose type, which means that it contains five carbon atoms and includes a formyl functional group. It is derived from hemicellulose, one of the main constituents of biomass. Like most sugars, it can adopt several structures depending on conditions. With its free carbonyl group, it is a reducing sugar.
The acyclic form of xylose has chemical formula HOCH2(CH(OH))3CHO. The cyclic hemiacetal isomers are more prevalent in solution and are of two types: the pyranoses, which feature six-membered C5O rings, and the furanoses, which feature five-membered C4O rings (with a pendant CH2OH group). Each of these rings subject to further isomerism, depending on the relative orientation of the anomeric hydroxy group.
Xylose is the main building block for the hemicellulose xylan, which comprises about 30% of some plants (birch for example), far less in others (spruce and pine have about 9% xylan). It is otherwise pervasive, being found in the embryos of most edible plants. It was first isolated from wood by Finnish scientist, Koch, in 1881, but first became commercially viable, with a price close to sucrose, in 1930.
Source: Wikipedia
Xylose
Chromatogram(s) using Benson Polymeric Columns
Part No.:
Eluent:
Flow Rate:
Detection:
Temperature:
Sample Size:
Column Size:
Resin Type:
DI H2O
0.4 ml/min
RI
80 C
20 ul, 30 mg/ml
300 x 7.8 mm
6% Ca
2 – Maltose
3 – Lactulose
4 – Glucose
5 – Xylose
6 – Arabinose
7 – Ribitol
8 – Arabitol
9 – Xylitol
Part No.:
Eluent:
Flow Rate:
Detection:
Temperature:
Sample Size:
Column Size:
Resin Type:
DI H2O
0.4 ml/min
RI
90 C
20 ul, 30 mg/ml
300 x 7.8 mm
6% Pb
2 – Maltose
3 – Xylose
4 – Galactose
5 – Mannose
6 – Glycerol
Part No.:
Eluent:
Flow Rate:
Detection:
Temperature:
Sample Size:
Column Size:
Resin Type:
DI H2O
0.8 ml/min
RI
80 C
20 ul, 30 mg/ml
300 x 7.8 mm
8% Pb
2 – Glucose
3 – Xylose
4 – Galactose
5 – Arabinose
6 – Xylitol
7 – Sorbitol
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