Organizing co mmittee

parts of 
S. adenostegia
and 
S. comosa
. 
 
 

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Poster presentation 
157 
POLYSACCHARIDES Convolvulus subhirsuta 
 
F.A. Kodiralieva, R.K. Rakhmanberdyeva 
S.Yu. Yunusov Institute of the Chemistry of Plant Substances Academy of sciences of the 
Republic of Uzbekistan st. Mirzo-Ulugbek, 77, 100170 Tashkent 
e-mail: fatimahon.82@ mail.ru
, (99)971-09-84 
 
Convolvulus
, a genus of plants of the family 
Convolvulaceae
. Stems are rambly or 
erect. Leaves are simple. Flowers have funnel-shaped, brightly colored corollas.
The carbohydrate complex of roots and aerial part organs of 
Convolvulus syhirsitus
plants has been studied. The presence of alcohol-soluble sugars, water-soluble 
polysaccharides, pectin substances and hemicelluloses has been established. The IR 
spectra of the isolated polysaccharides were also studied. 
As a result of this study it was found that alcohol-soluble sugars of root and aerial 
part of the plant 
Convolucus syhirsitus
are represented by hexose - glucose, 
ketosaccharides - fructose and sucrose. 
The yield of water-soluble polysaccharides (WSPS) was 4.0% in the aerial part and 
1.74% in the roots. The isolated polysaccharides are amorphous powders of beige 
colour, well soluble in water, giving staining with iodine solution, indicating the 
presence of starch type glucan in the studied raw material.
Galactose, glucose, arabinose and xylose were identified in the monosaccharide 
composition of water-soluble polysaccharides. 
The yield of pectin substances (PS) was 3.6 % in the aerial part and in the roots - 
0.34% PS is an amorphous powder of white colour, well soluble in water. The PS 
solution gives with iodine a hardly noticeable quickly disappearing blue staining. 
The monosaccharide composition of pectin substances was shown to be represented 
by galacturonic acid, galactose, glucose, arabinose and in small amounts xylose. 
The yield of HMC was 10.0% (aerial part) and 2.4% (root), respectively. 
Hemicelluloses are amorphous beige powder, insoluble in water, well soluble in dilute 
alkalis. 
As a result of chromatographic analysis the presence of glucuronic acid, galactose, 
arabinose, xylose, in smaller amounts glucose was found in the composition of 
hemicelluloses. 
PS and HMC are also characterised by the presence of arabinose and xylose. This is 
characteristic of HMCs based on xylenes.
Thus, the presence of WSPS, PS, HMC in the plant 
Сonvolvulus syhirsitus
was 
established. It is shown that these biopolymers predominate in the aerial part.