D-Glucuronate

Gum ghatti is the calcium and magnesium salt of a complex polysaccharide which contains L-arabinose, D-galactose, D-mannose, and D-xylose and D-glucuronic acid (48) and has a molecular weight of approximately 12,000. On dispersion in water, gum ghatti forms viscous solutions of viscosity intermediate between those of gum arabic and gum karaya. These dispersions have emulsification and adhesive properties equivalent to or superior to those described for gum arabic. 

Uronic acids are monosaccharides in which the terminal primary alcohol group is oxidized to a carboxyhc acid functional group, eg, D-glucuronic acid [6556-12-3] (11). 

P -D-xylan with 3-hnked a-L-arabiaose branches (1 4)-P -D-xylan with 2-Unked 4-0-methyl-a-D-glucuronic acid and arabiaose branches... 

Monosaccharides can be oxidized enzymatically at C-6, yielding uronic acids, such as D-glucuronic and L-iduronic acids (Figure 7.10). L-Iduronic acid is similar to D-glucuronic acid, except for having an opposite configuration at C-5. Oxidation at both C-1 and C-6 produces aldaric acids, such as D-glucaric... 

An exopolysaccharide containing a high content of D-glucuronic add will tend to bind cations. 

Figure 2 Structures of D-glucuronic (GlucA 1), o-galacturonic (GalA 2), and o-gluconic (GluA 3) acids.

CN D-glucuronic acid compd. with 5-methyl-6-[[(3,4,5-trimethoxyphenyl)amino]methyl]-2,4-quinazolinediamine (1 1)... 

C4()H7,jOi9 17575-20-1) see Acetyldigitoxin a-Acetyldigoxin Lanatoside C D-glucuronic acid... 

The NMR spectrum of the dry sample showed broad unresolved peaks that correspond to a typical mixture of 4-O-methyl-D-glucuronic acid, L-arabinose and D-xylose, and proteins (Oliveira et al., 2010) (Figure 5). 

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