Peterbauer, "Evaluation of different expression systems for the heterologous expression of pyranose
2-oxidase from trametes multicolor in E.
Encouraged by these results and to compare biological activities of monosaccharide (furanose and pyranose
form) benzoates with that of disaccharide (e.g.
This is also clear from the variation in the peak position of the infrared band markers at 1580 nm (crystalline region in cellulose), 1705 nm (aromatic skeletal in ligin) and 1773 (furanose or pyranose
ring constituent of hemicellulose) at different temperatures.
From the first come seven papers exploring conformational dynamics of oligosaccharides, structure and dynamics of carbohydrates using residual dipolar couplings, combined theoretical and NMR (nuclear magnetic resonance) experimental approach on carbohydrate-aromatic interactions and on pyranose
ring distortion, laser photo chemically induced dynamic nuclear polarization technique as a tool for structural analysis of inter- and intramolecular protein-carbohydrate interactions, and hydroxy protons in structural studies of carbohydrates by NMR spectroscopy.
Forming a six membered ring sugar termed a pyranose
; a derivative from a heterocyclic compound pyran.
In addition, chitosan has reactive amino groups on pyranose
rings and becomes a cationic polymer upon the protonation of its amino groups.
The absorption bands at [lambda]=1672 nm and 1712 nm are also due to CH in the aromatic skeletal and furanose (or pyranose
) regions (Osborne and Fearn 1988, Williams and Norris 1990, Siesler et al.
Electronegative substituents at the C-2 position of saturated heterocycles or at the anomeric carbon of a pyranose
ring favor the equatorial position much less than expected; often the axial position is favored.
As the biocatalyst of choice, the researchers selected various pyranose
oxidoreductases--fungal enzymes that oxidize a wide number of sugars specifically at the C-2 position.
The symmetric bending of C[H.sub.2] and C-O groups of the pyranose
ring of V/VO are found, respectively, at 1441 and 1,377 [cm.sup.-1].
The anomeric absorption peak at 890 cm-1 is typical signal for a-configuration glucan in the pyranose
Further analysis of the spectrum in the 1200-1000 [cm.sup.-1] region showed specific bands typical for a pyranose