Organizing co mmittee

Сonvolvulus subhirsutus roots (meal after extraction with 96 ethanol) 
Test 1 
7,39 
7,35 
1,17 
Test 2 
7,32 
Arundo donax L. (aboveground part) 
Test 1 
20,35 
20,40 
3,26 
Test 2 
20,46 
Arundo donax L. (meal after extraction with 96 ethanol) 
Test 1 
11,65 
11,7 
1,87 
Test 2 
11,75 
As can be seen from the table, the comparative quantitative protein content in the 
meal of 
Convolvulus subhirsutus
and 
Arundo donax L.
contains 7.35% and 11.7%, 
respectively. That allows us to assume the possibility of creating a waste-free 
production in order to create affordable protein feeds for livestock and fisheries. 
References
1. The Complete Encyclopedia of Folk Medicine / Team of authors: OLMA Media 
Group, 2011. - 540 p 
2. 
Arundo donax
L. Plants of the World Online. Board of Trustees of the Royal 
Botanic Gardens, Kew. 2017. Retrieved 12 July 20203. Ermakov A.I., Arasimovich 
V.V. 1982. In: Methods of biochemical research of plants M. S.430.

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Poster presentation 
122 
QUANTITATIVE DETERMINATION OF PROTEINS IN Mentha 
longifolia PLANT GROWING IN UZBEKISTAN 
 
Sh.Kh. Rakhimova, D.E. Dusmatova, R.F. Mukhamatkhanova, L.G. Mezhlumyan 
S.Yu. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences 
Republic of Uzbekistan, 100170, Tashkent, M. Ulugbek st., 77 
e-mail: [e-mail] 
 
Mentha longifolia 
(L.) Huds.
- 
Long leaf mint, a plant cultivated in Africa, Asia, 
Europe, the North Caucasus, Western Siberia and used as a condiment agent, in making 
a green cheese and a source of essential oil, which used in pharmaceutical, perfume, 
confectioners, alcoholic and soap fields of industry. 
Protein research is important for the development of an integrated use of plant raw 
materials. The leaves of this species, collected in the Tashkent region during the period of 
rapid growth, the waste of leaves after the removal of lipophilic and semi-polar fractions, as 
well as the waste of leaves and flowers collected during the flowering period and after the 
removal of lipophilic and semi-polar fractions, have investigated. 
The quantitative protein content of the above specimens has determined by an 
accelerated colorimetric method under laboratory conditions using the Nessler reagent 
on the spectrophotometer V-5000 Metach [1]. The results of the analysis are presented 
in the table. 
Total protein content in 
Mentha longifolia 
Sample 
number 
Proteins, % 
Average protein content, 
% 
Proteinic nitrogen content, 
%