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1-Carboxy-2-phenylethan-1-aminium Iodide 2-Azaniumyl-3-phenylpropanoate Crystals: Properties and Its Biochar-Based Application for Iodine Enrichment of Parsley
(Multidisciplinary Digital Publishing Institute, 2025-10-06)
Aitugan Sabitov
;
Seitzhan Turganbay
;
Almagul Kerimkulova
;
Yerlan Doszhanov
;
Karina Saurykova
Iodine deficiency remains a significant nutritional problem, which stimulates the search for sustainable approaches to biofortification of vegetable crops. The aim of the work was to develop a "smart" bio-iodine fertilizer based on the organoiodide complex 1-carboxy-2-phenylethan-1-aminium iodide 2-azaniumyl-3-phenylpropanoate (PPI) and highly porous biochar from agro-waste, assessing its efficiency on the parsley model. PPI was synthesized and characterized (IR/UV spectroscopy, thermal analysis), biochar was obtained by KOH activation and studied by low-temperature nitrogen adsorption (S_BET) methods, as well as standard physicochemical characterization. The granulated composition PPI + biochar (BIOF) was tested in pot experiments in comparison with KI and control; The biomass of leaves and roots, iodine and organic nitrogen content, and antioxidant indices (ascorbic acid, total polyphenols, antioxidant activity) were assessed. BIOF provided a significant increase in yield and nutrition: leaf mass reached 86.55 g/plant versus 77.72 g/plant with KI and 65.04 g/plant in the control; root mass — up to 8.25 g/plant (p<0.05). Iodine content in leaves and roots increased to 11.86 and 13.23 mg/kg (d. w.), respectively, while organic nitrogen levels increased simultaneously (57.37 and 36.63 mg/kg). A significant increase in the antioxidant status was noted (ascorbic acid 36.46 mg/100 g dry weight; antioxidant activity 44.48 mg GA/g; polyphenols 23.79 mg GA/g). The presented data show that the combination of PPI with activated biochar forms an effective platform for controlled supply of iodine to plants, increasing the yield and functional qualities of products; the prospects for implementation are associated with field trials and dosage optimization.
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The Iodine–Dextrin–Lithium Complex: Morphology, Antibacterial Activity, and Cytotoxicity
(Multidisciplinary Digital Publishing Institute, 2025-12-18)
Daniil Shepilov
;
Seitzhan Turganbay
;
Ardak B. Jumagaziyeva
;
Tamara Bukeyeva
;
Dana A. Askarova
A new iodine-dextrin-lithium complex (IDLC) was synthesized and structurally characterized as a hybrid supramolecular system combining antiseptic, stabilizing, and biocompatible components. The compound integrates iodine as the primary antimicrobial agent, lithium as a coordination and stabilization element, and dextrin as a biodegradable polysaccharide matrix enabling sustained release. Physicochemical analyses confirmed the formation of a uniform, thermally stable complex. Biological evaluation revealed strong bactericidal activity, with minimum bactericidal concentrations (MBC) ranging from 1.95 to 15.63 µg ml-1 against both Gram-positive and Gram-negative pathogens, including multidrug-resistant Staphylococcus aureus and Acinetobacter baumannii. The complex also demonstrated inhibitory effects in virus-infected MDCK cell cultures. Cytotoxicity studies showed CC50 = 0.23-0.48 mg ml-1 on human MNCs and more than 10 mg ml-1 on MDCK cells, confirming low toxicity. The results of the study on the cytotoxicity of IDLC suggest a cytotoxic effect on tumor cell lines such as HepG2, HeLa, AGS, K562, and H9, as well as normal cell lines MeT-5A. Therefore, it can be estimated that IDLC has the potential to be a new drug with antitumor activity against these cell lines. The research confirms that iodine can be effectively stabilized within a dextrin-lithium framework to yield a biologically active, thermally resistant complex, suitable for pharmaceutical use.
Цитирования (OpenAlex) 3
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Impact of Zeolites on Growth Dynamics of Medicago sativa and Lactuca sativa in Hydroponics
(Multidisciplinary Digital Publishing Institute, 2026-02-28)
Yerlan Doszhanov
;
Dana Akhmetzhanova
;
Leticia Fernández Velasco
;
Korlan Khamitova
;
Arman Zhumazhanov
In Kazakhstan, food safety is a pressing issue due to water and soil pollution. This study examined the effect of natural zeolite as an alternative hydroponic substrate on the physicochemical properties of the medium and the physiological and metabolic responses of two agricultural crops: Medicago sativa L. and Lactuca sativa L. BET analysis revealed that the zeolite possesses a substancial specific surface area (22 m²/g), ensuring effective moisture retention and gradual nutrient release. After plant cultivation, these parameters decreased moderately, confirming the filling of the pores with organic compounds without loss of key properties. In experiments with Medicago sativa, zeolite provided better aeration and stable moisture, promoting the development of a branched root system and increased seedling viability compared to an artificial substrate. Metabolic analysis of three Lactuca sativa varieties revealed cultivar-specific adaptive responses. Zeolite increased the synthesis of fatty acids and their derivatives, reflecting membrane-protective restructuring, while sugar and terpenoid content varied depending on the variety. The results confirm the suitability of zeolite as a stable substrate for hydroponic production, allowing for optimized water consumption, improved root development, and enhanced physiological stability of plants.
Цитирования (OpenAlex) 2

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