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Galactomannan oxidation, enzymic

Rogers and Thompson208 used the action of this enzyme, and subsequent oxidation by bromine, to effect the conversion of a galactomannan into a galacturonomannan a similar sequence has been used with glycoproteins as a method for linkage analysis.209... [Pg.357]

Newer assays involve the action of enzymes, e.g., the assay of Baird and Smith (1989b) who treated galactomannans with galactose oxidase to generate H202 that in turn oxidized o-tolidine in the presence of preoxidase. These authors claimed this double oxidation reaction to be specific for the galactosyl monomer and its derivatives, based on the exclusive oxidation at the C-6 position. o-Phenylenediamine can be substituted for o-tolidine the color is measured at 425 nm. [Pg.139]

Galactomannan has been modified to increase the solubility by oxidation with enzyme and 2,2,6,6-tetramethyl-l-piperidinyloxy radical (TEMPO).[24,25] Other derivatives are also available such as hydroxyethylgalactomannan, cationic or anionic galactomannans. [26-28] Grafted copolymers were also prepared by grafting acrylamide on cationic guar. [29,30]... [Pg.1149]


See other pages where Galactomannan oxidation, enzymic is mentioned: [Pg.361]    [Pg.257]    [Pg.166]    [Pg.14]    [Pg.140]    [Pg.354]    [Pg.1147]    [Pg.360]    [Pg.267]   
See also in sourсe #XX -- [ Pg.123 ]




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Enzymes galactomannans

Enzymes oxidizing

Galactomannane

Galactomannans

Oxidative enzymes

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