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Adaptation Features of Gentiana tianschanica Rupr. Populations to Environmental Factors in Kazakhstan
(2024-01-01)
Бекзат Тыныбеков
;
Moldir Imanaliyeva
;
Askhat Kuatbayev
;
Gulmira Satybaldiyeva
;
Elmira Boribay
The study investigates the current state, floristic composition, and ecological characteristics of Gentiana tianschanica populations in the Ile-Alatau region, part of the Ile-Alatau National Park, Kazakhstan.Gentiana L., an ancient boreal genus, includes 31 species in Kazakhstan, such as the endemic Gentiana dschungarica.Known for medicinal uses, especially for gastrointestinal and urogenital disorders, interest in gentians has risen for ornamental and pharmacological applications.Nine natural populations of G. tianschanica were studied in diverse ecological and phytocoenotic conditions of the Ile-Alatau mountains.Soil analyses revealed significant differences in the physicochemical properties of the species' habitats.In the Kimasar Gorge, mountain-meadow chestnut soils with a light loamy texture were observed, while the Big Almaty Gorge featured dark chestnut soils rich in humus (7.36-18.78%)and nutrients such as nitrogen (120.4-140.0mg/kg), phosphorus (58-98 mg/kg), and potassium (470-1000 mg/kg).These findings emphasize the species 'adaptation to varying altitudinal and climatic zones.Phytochemical analysis showed G. tianschanica is rich in bioactive compounds, including phenolics, bitter glycosides, flavonoids, and alkaloids.Total phenol content reached 1567.17-9008.20mg of gallic acid/100 g, with the highest levels in leaves.Flavonoids (up to 1358.25 mg catechin/100 g) and vitamin C (up to 244.7 mg/100 g) were significant.Syringic acid (1685.8mg/100 g), quercetin (317.4 mg/100 g), and chlorogenic acid (237.5 mg/100 g) highlighted antioxidant and antiinflammatory potential.The antioxidant activity, particularly in leaves, reached 530.30 mg Trolox/100 g.Anthropogenic threats, including overgrazing and habitat disturbance, have led to declining populations, necessitating conservation strategies like habitat monitoring, protective regimes, and sustainable medicinal plant use.This study underscores the ecological and phytochemical significance of G. tianschanica, which is vital for biodiversity conservation and pharmaceutical development.
Цитирования (OpenAlex) 2Цитирования (OpenCitations) 3
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Eucalyptus wood waste biochar: a green solution for fluoranthene contamination in wastewater
(Taylor & Francis, 2025-04-03)
Yu Shuang Ren
;
Bekzat Tynybekov
;
Akmaral Nurmahanova
;
Talgat Ibragimov
;
Ussen Kurmanbay
This study investigates the removal of fluoranthene (Flu) from vehicle-wash wastewater (VWW) using biochar (EWB) derived from eucalyptus wood waste. Analytical techniques such as surface area analysis (SAA), scanning electron microscopy (SEM), and fourier transform infrared spectroscopy (FT-IR) were employed to characterize the EWB. Optimal conditions for Flu adsorption (98.80%) were determined as 40 ppm initial concentration, 60 minutes contact time, pH 5, 60°C, and 0.4 g adsorbent dosage. The adsorption process was evaluated using kinetic models and isotherms, showing that Flu adsorption onto EWB follows a pseudo-second order kinetic model. The Langmuir isotherm provided the best fit for the experimental data. Thermodynamic analysis revealed that the adsorption process is exothermic and spontaneous, as indicated by the values of entropy (ΔS°), Gibbs free energy (ΔG°), and enthalpy (ΔH°). A comparative analysis with commercial adsorbents demonstrated the high efficacy of EWB in removing Flu from industrial wastewater, achieving over 98% efficiency.
Цитирования (OpenAlex) 3Цитирования (OpenCitations) 2

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