Production of functionalized dextrins by enzymic transfer of a-cyclodextrin
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Functionalized linear dextrins were sepd. on a preparative scale by HPLC on RP-18 phases with water as the eluent. These dextrins were obtained by the transfer of a-cyclodextrin to glucosides by means of a cyclodextrin-glycosyltransferase of Klebsiella pne ...
The influence of temp. on the catalytic activity and deactivation of sol. enzymes which are com. used in batch processes is discussed. Since high temp. not only accelerates the desired enzymic reaction but also the undesired deactivation of the enzyme, it ...
The IC-compatible lift-off technique is applied for patterning enzymatic membranes on wafer level. They are used to complete planar three-electrode microelectrochemical cells. These final devices, based on amperometric H2O2 detection, are tested for the de ...
The alpha-(1-->3)- and alpha-(1-->4)-linked C-disaccharides derived from D-glucose and L-mannose have been obtained with high stereoselectivity via the addition of 2,3,4,6-tetra-O-acetyl-glucopyranosyl radical to (1S,4R,5R,6R)-6-endo-chloro-3-methylidene-5 ...
A tinglucal tributyl[4,6-O-bis(t-butyl)silylidene-3-O-tris(isopropyl)silyl]tin 7 and a triflate derived from isolevoglucosenone (1R,4R,5R)-4-benzyloxy-6,8-dioxabicyclo[3.2.1]oct-2-en-2-yl trifluoromethanesulfonate 10 undergo the carbonylative Stille conden ...
Glucose supply from blood to brain occurs through facilitative transporter proteins. A near linear relation between brain and plasma glucose has been experimentally determined and described by a reversible model of enzyme kinetics. A conformational four-st ...
The present work investigates the utilisation of the widely used SU-8 photoresist as an immobilisation matrix for glucose oxidase (GOx) for the development of glucose micro-biosensors. The strong advantage of the proposed approach is the simultaneous enzym ...
Cyclodextrin glucanotransferases not only transform starch into cyclodextrins, but also catalyze the transfer of cyclodextrins to appropriate acceptors and the disproportionation of linear dextrins. These three reactions are manifestations of a single cata ...
Oxidn.-sensitive nanoparticles have been decorated with an oxidizing enzyme (glucose oxidase) for release behavior that is responsive to the presence of the enzyme substrate (glucose). [on SciFinder (R)] ...
The influence of substrate compn. on the yield, nature, and compn. of exopolysaccharides (EPS) produced by the food-grade strain G. xylinus I-2281 was investigated during controlled cultivations on mixed substrates contg. acetate and either glucose, sucros ...
