Organizing co mmittee

 
 

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Poster presentation 
158 
POLYSACCHARIDES OF THE AERIAL PART OF Gentiana olivieri 
F.A. Kodiralieva
1
, Ch.T. Toshtemirova
2
, R.K. Rakhmanberdieva
1
,
N.S. Normakhamatov
2
 
1) 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 
2) Tashkent Pharmaceutical Institute, Tashkent, Uzbekistan,
e-mail: [e-mail] 
Gentiana olivieri is a perennial plant. The stem is straight or ascending, up to 30 cm 
tall; naked, light green. The rhizome is thin, with cord-like roots. Stems at the base up to 
5 cm densely covered with remnants of fibrous sheaths of old leaves, straight or slightly 
ascending. Grows on dry mountain slopes. It is widely found from foothills to 
highlands; in open areas, among herbaceous and tree-shrub vegetation, at an altitude of 
300-3700 m and distributed in Central Asia, southern Transcaucasia. 
The qualitative composition and quantitative content of Gentiana olivieri 
polysaccharides collected from the Samarkand region were studied. 
Water-soluble polysaccharides (WSPS), pectin substances (PS), and hemicelluloses 
(HMC) have been isolated from Gentiana olivieri, and the monosaccharide composition 
has been established. The results showed that the monosaccharide composition of 
polysaccharides belong to the galactans. 
Alcohol-soluble sugars according to chromatographic analysis are represented by 
glucose, sucrose. Water-soluble polysaccharides were extracted with water. The raw 
material was extracted with water at room temperature 20-22 °C and WSPS was 
isolated. Also, pectin substances (PS) and hemicelluloses (HMC) were successively 
isolated. The content and monosaccharide composition of the selected polysaccharides 
are given in table.1. 
Table 1. Yield of polysaccharides and their monosaccharide composition 
WSPS and PS are amorphous powders, readily soluble in water. 
Pectin substances were white powders with a creamy tint. PS were characterized by a 
high content of arabinose and galactose. In the hydrolysates of pectin substances, along 
with neutral monosaccharides, galacturonic acid was present.