The findings of Hexamine and uronic acid
levels in the granulation tissues of control and experimental wounds are shown in Figure 2.
The uronic acid
contents were determined using the m-hydroxydiphenyl method with galacturonic acid as the standard.
The proton also can cleave the uronic acids
and acetyl units thus liberating acids which facilitate the degradation of polysaccharides.
Then the contents of monosaccharides and uronic acids
in the fractions were determined.
Thus; although, the reed contains a higher xylan concentration than eucalyptus, the uronic acids
occur in lower quantities.
Bands located at 960 [cm.sup.-1] was related to C-O stretching vibrations with contributions from C-C stretching and C-C-O deformation vibrations of the uronic acids
residues in heteropolymeric blocks.
The hemicelluloses content was obtained by summing xylans, galactans, arabinans, and mannans, plus the equivalent of mannans, as glucans, uronic acids
, and acetyl groups.
An absorption peak at 2927 cm-1 indicated the existence of carbohydrate, while absorption peaks at 1645, 1542, and 1398 cm-1 suggested the presence of uronic acid
Determination of Contents of Carbohydrate, Uronic Acid
, and Protein.
Other ingredients of the aloe include galactose, uronic acids
It thus can be assumed that in Halocynthia the role of Sia is carried out by other acidic sugars like uronic acids
which frequently are found in lower animals.
New method for quantitative determination of uronic acids
. analytical Biochemistry, New York, v.54, n.2, p.484-489, 1973.