COMPARATIVE STUDY OF THE POLYSACCHARIDE COMPOSITION OF THE FRUITS LYCIUM BARBARUM L. AND LYCIUM LUTHENICUM MURR

2020 ◽  
Vol 0 (4) ◽  
pp. 40-45
Author(s):  
M.A. SEKINAEVA ◽  
◽  
S.V. KRIVOSHCHEKOV ◽  
O.N. DENISENKO ◽  
B.N. ZHITAR ◽  
...  

The polysaccharide complex (PSCs) of the Lycium barbarum fruits (commercially available and introduced in the research Institute of Biotechnology of Gorsky GAU, RSO-Alania) and wild Lycium ruthenicum (Absheron District, Tugchay River valley) was studied for the first time. The PSC yield from Lycium barbarum L. fruits was 1. and 1.7 % versus 3.1% from Lycium ruthenicum . In the majority of cases, uronic acids are present in the fraction of water-soluble polysaccharides (WSPS-2) and pectin substances (PS) of Lycium ruthenicum in the amount of 60.0% and 58.0%, respectively. Arabinose is present in the largest amount in all PSK (more than 43%). The second largest monomer is galactose, which is also identified in all polysaccharides. The molecular weight of the 'acidic' and 'neutral' polysaccharides (WSPS-1 and WSPS-2) of the Lycium fruits under consideration differs to a significant extent.

2017 ◽  
pp. 77-87 ◽  
Author(s):  
Вера (Vera) Андреевна (Andreevna) Костикова (Kostikova) ◽  
Евгений (Evgenij) Викторович (Viktorovich) Банаев (Banaev) ◽  
Дмитрий (Dmitrij) Константинович (Konstantinovich) Костиков (Kostikov) ◽  
Татьяна (Tat'jana) Абдулхаиловна (Abdulhailovna) Кукушкина (Kukushkina)

The results of comparative study of the content of the biologically active substances in the aboveground organs of Atraphaxis frutescens (L.) C. Koch. and A. pungens (Bieb.) Jaub. et Spach. are presented. It is established that plants contain a rich complex of biologically active substances: flavonols, tannins, catechins, carotenoids, pectin substances. The leaves and the reproductive organs of the Atraphaxis differ in the highest content of all substances. Almost on all biochemical indices aboveground organs A. pungens surpass in A. frutescens. In leaves and reproductive organs of A. pungens the content of flavonols (up to 7.32% ‒ in reproductive organs and up to 10.10% ‒ in leaves), tannins (up to 34.30% and 27.27%, respectively) and protopectins (up to 11.29 and 7.96%), and also in leaves ‒ catechins (up to 3.92%) and in reproductive organs ‒ pectins (up to 2.63%) and carotenoids (up to 83.48 mg%) higher than at A. frutescens. The content of catechins in the reproductive organs (up to 3.78%) and in leaves ‒ carotenoids (up to 273.14 mg%) is higher in A. frutescens. Populations of Atraphaxis perspective for further pharmacological researches are allocated. Researches of biologically active substances A. frutescens and A. pungens growing in Siberia are spent for the first time.


2017 ◽  
pp. 45-51
Author(s):  
Валентина (Valentina) Григорьевна (Grigor'evna) Будагаева (Budagaeva) ◽  
Арюна (Ariuna) Арсалановна (Arsalanovna) Раднагуруева (Radnagurueva) ◽  
Елена (Elena) Владимировна (Vladimirovna) Лаврентьева (Lavrent'eva) ◽  
Дарима (Darima) Дондоковна (Dondokovna) Бархутова (Barkhutova) ◽  
Даниил (Daniil) Николаевич (Nikolaevich) Оленников (Olennikov)

Alkaline hydrotherms of the Baikal region are extreme aquatic ecosystems characterized by the presence of the specific microbial communities, mats. A study of the carbohydrate composition of the biomass of microbial maths from four hydrothermal waters of the Baikal region (Alla, Garga, Seya, Umkhei) showed the presence of mannitol (1,93–7,25 mg/g, from the dry weight), uronic acids (1,15–15,85 mg/g) and neutral monosaccharides. The latter were galactose (2,02–56,56 mg/g), glucose (2,00–45,96 mg/g), mannose (4,83–78,86 mg/g), xylose (1,18–10,53 mg/g), fucose (0,23–2,40 mg/g), and arabinose and rhamnose as a trace. It is shown that the mats from the studied hydrothermal waters of the Baikal region characterized by the different ratio of carbohydrate groups and a specific monosaccharide composition. A fraction of water-soluble polysaccharides was isolated from the biomass of the microbial mat of Seya hydrotherm. It was a mixture of seven components with molecular masses from 122 to 1700 kDa. The dominant polymer Se-WSPS-07 with a molecular weight 122 kDa was isolated and preliminarily characterized as a heteropolysaccharide containing galactose, glucose, mannose as dominant monosaccharides, and protein (5,92%). It was found that Se-WSPS-07 possesses biological activity demonstrating its perspectiveness for the further study as a therapeutic agent. The chemical characteristics of the carbohydrate components of microbial maths from the alkaline hydrotherms of the Baikal region were realized for the first time.


2020 ◽  
pp. 189-197
Author(s):  
Elena Petrovna Khramova ◽  
Tatyana Ablulkhailovna Kukushkina ◽  
Tat'yana Mikhaylovna Shaldaeva ◽  
Serafima Yakovlevna Syeva

A comparative study of biochemical parameters of two closely related species of plants Dasiphora fruticosa and Соmarum salesovianum (shrub and subshrub), growing in the Altai Mountains, was carried out for the first time. It is established that plants contain a rich complex of biologically active substances: flavonols, tannins, catechins, carotenoids, saponins, pectin substances. In the leaves and flowers of D. fruticosa, the content of flavonols, tannins, saponins and pectin substances is 1.1–2.5 times higher than that of C. salesovianum. Particularly significant differences in the content of pectin substances and tannins, which are mainly synthesized in the leaves of plants. By contrast, saponins and flavonols accumulate in flowers more,than in leaves. Maximum content of carotenoids identified in the leaves of plants C. salesovianum (up to 70.4 mg%), but the yellow flowers of D. fruticosa contain carotenoids more 3.2 times than the white flowers of S. salesovianum. High antioxidant activity were found in water-ethanol extracts of leaves (up to 0.85 mg/g) and flowers (up to 0.98 mg/g) of D. fruticosa, which may be due to the increased content of phenolic compounds, in particular tannins compared with the S. salesovianum.


2013 ◽  
Vol 13 (3) ◽  
Author(s):  
Netty Widyastuti ◽  
Teguh Baruji ◽  
Henky Isnawan ◽  
Priyo Wahyudi ◽  
Donowati Donowati

Beta glucan is a polysaccharide compound, generally not soluble inwater and resistant to acid. Beta glucan is used as an immunomodulator (enhancing the immune system) in mammals is usually a beta-glucan soluble in water, easily absorbed and has a low molecular weight. Several example of beta-glucan such as cellulose (β-1 ,4-glucan), lentinan (β-1 0.6-glucan) and (β-1 ,3-glucan), pleuran (β-1, 6 and β-1 ,3-glucan) are isolated from species of fungi Basidiomycota include mushrooms (Pleurotus ostreatus) and shiitake (Lentinus edodes).The purpose of thisresearch activity is to obtain beta-glucan compound that can be dissolved in water and in alkali derived from fungi Basidiomycota, i.e, Oyster mushrooms (Pleurotus ostreatus) and shiitake (Lentinus edodes). The result of beta-glucan compared to characterize the resulting beta glucan that is molecular structure . The difference of beta glucan extraction is based on the differences in solubility of beta-glucan. Beta glucan could be water soluble and insoluble water.


Author(s):  
Ole V. Petersen ◽  
Alexander P. Khomyakov ◽  
Henning Sørensen

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Petersen, O. V., Khomyakov, A. P., & Henning. (2001). Natrophosphate from the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin, 190, 139-141. https://doi.org/10.34194/ggub.v190.5184 _______________ The rare mineral natrophosphate has been identified for the first time in the Ilímaussaq alkaline complex in a drill core from the Kvanefjeld area. It occurs sparsely in zoned veinlets with cores of natrophosphate and borders of fibrous trona. The natrophosphate is more or less smoky, transparent and unaltered. The refractive index n = 1.448 ± 0.005 is low compared to that given for the material from the type locality, Khibina alkaline complex, Kola Peninsula; the unit cell parameter a = 27.76 ± 0.05 Å is in excellent agreement with that given for the material from the type locality. The veins occur in hyper-agpaitic naujakasite lujavrite; villiaumite is an associated mineral. Only a few water-soluble minerals have so far been found in the Ilímaussaq alkaline complex compared to the wealth of such minerals in the Khibina and Lovozero alkaline complexes. This is possibly at least partly due to lack of necessary precautions during sampling.


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