Қазақ ұлттық қыздар педагогикалық университеті / Казахский национальный женский педагогический университет

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МИКРОБАЛДЫРЛАРДЫҢ МОНО- ЖӘНЕ АРАЛАС ДАҚЫЛДАРЫНЫҢ ФИЗИОЛОГИЯЛЫҚ КӨРСЕТКІШТЕРІНЕ ХРОМНЫҢ ӘСЕРІ / Влияние хрома на ростовые показатели микроводорослей в моно- и смешанных культурах
(2015-01-01)
Gulzira Izmukhanovna Yernazarova
;
Aliya Amangeldievna Ramazanova
The publication was to identify the main indicators of growth and development of cell cultures of microalgae. In algocenosis seasonal succession, accompanied by the change of the dominant species, are not fully understood phenomenon. In additional study of interspecies interaction in the presence of damaging factors may contribute to clarify the direction of growth processes in algocenosis. The study determined the growth rates of cell cultures and dry and wet biomass on growth parameters and cell concentration. In this regard, the microalgae is a test object to determine the contaminated wastewater and monitoring to detect toxicity reservoirs. To determine the toxic effect of concentrates was introduced into an aqueous environment potassium dichromate.
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Mildew of oleaster (Elaeagnus oxycarpa Schlecht.) registered in large industrial cities (Pavlodar, Aksu, Ekibastuz) of the Pavlodar region
(Elsevier BV, 2016-09-12)
Ainagul K. Ospanova
;
Ainagul Kaliyeva
;
Lyailya Anuarova
;
Aliya Bazargaliyeva
;
Gulzira Izmukhanovna Yernazarova
Purpose: Vegetation plays a very important role in industrial regions in terms of not only air purification, but also oxygen enrichment, air humidity, and city aesthetics. The paper presents the authors’ study of oleaster mildew during 2012–2013 in the cities of Pavlodar, Ekibastuz, and Aksu. Method: The species composition of mildew, patterns of its growth and reproduction, seasonal dynamics, and the level of trees infection according to a six-score scale were determined. Result: Three cultivars of mildew from three genera were registered. The species composition of mildew of oleaster is studied for the first time in large industrial cities of the Pavlodar region. The comparative analysis of the systematic structure of phytopathogenic fungi was followed by the study of the micro flora of green planting in megalopolises. The seasonal dynamics of growth, development, and reproduction was determined. The impact of pests on host-plants was studied. Conclusion: Timely diagnosis and localization of disease outbreak increases the likelihood of successful treatment and saving of plants.
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Absorption of chromium by mono- and mixed cultures of microalgae
(Al-Farabi Kazakh National University, 2018-01-01)
Gulzira Izmukhanovna Yernazarova
;
Svetlana Kazbekovna Turasheva
;
Акмарал Сартаева
;
B. Orazova
;
Aliya Bazargaliyeva
In the article the sorption ability of microalgae cultures to chromium are discussed. The objects of the study were microalgae from the collection of the Department of Biotechnology of Al-Farabi Kazakh National University, related to cyanoprokaryotes (Cyanoprocaryota/ Cyanobacteria): Anabaena flosaquae, Anabaena arnoldii, Nostoc linckia, Calothrix pariethina as well as their two-species mixtures A. flos-aquae х C. pariethina, N. linckia х C. pariethina, A. flos- aquae х N. Linckia, A. flos-aquae х A. arnoldii and Scenedesmus quadricauda. Also two green (Scenedesmus quadricauda and Chlorhormidium sp.) and one diatomaceous (Nitzshia sp.) algae were studied. The duration of cultivation was 20 days. Potassium bichromate was added to the nutrient medium at concentrations 0.01-0.2 mg/ml calculated per unit of chromium. The concentration of chromium in the filtrates of the studied cultures in some cases significantly decreased by the end of the cultivation period, which indicates the biosorption of this element by the microalgae cells. The investigated strains of microalgae absorb chromium from the medium in varying degrees. The most active biosorbents among the explored cultures were A. flos-aquae, N. linckia and C. рariethina. A microalgae A. arnoldii extracts chromium from the medium in smaller quantities. The listed strains refer to cyanoprokaryotes (cyanobacteria), from other cultures, the Scenedesmus quadricauda absorbs chromium quite actively. The highest intensity of chromium biosorption is characteristic of Nostoc (N. linckia), which extracts from the medium 60.8-74.6% chromium at initial concentrations 0.05-0.1 mg/ ml respectively. The most active biosorbents of chromium were four species of Cyanobacteria. In this regard, these strains have been selected by us for future study of the processes of sorption and metabolic activity in mono- and mixed cultures of microalgae.
Цитирования (OpenAlex) 2Цитирования (OpenCitations) 2
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Method of use of biotechnological research (for example, biologically active substances of higher aquatic plants) in teaching Biology
(Al-Farabi Kazakh National University, 2018-01-01)
Gulzira Izmukhanovna Yernazarova
;
Aliya Amangeldievna Ramazanova
;
L Anuarova
The article gives an opportunity for students to practice theoretical knowledge obtained by integratingbiotechnological research into methods of teaching biology in higher education institutions. With thehelp of biotechnological research, methods for conducting standard laboratory studies of pedagogical biologyin higher educational institutions are proposed. Laboratory classes are conducted efficiently, usingcomprehensive technological methods, depending on the pedagogical skills of the teacher. Based on theuse of biotechnological research, biologically active substances from high-water plants were determined.The subject of the study were aquatic plants Eichhornia crassipes, Pistia stratiotes, grown in a specialliquid medium, under the conditions of luministate. The amounts of biologically active substances fromaboveground and underground parts of aquatic plants were analyzed. Most of the biologically activeISSN 2520-2634 Journal of Educational Sciences. №2 (55). 2018 67Ерназарова Г.И. және т.б.substances are alkaloids, amino acids, anthraquinones, proteins, carbohydrates, coumarins,, polysaccharides,steroids, terpenes, phenolic acids and flavonoids. Methodical work is important in determiningthe method of detecting biologically active substances in special experimental work and analyzing theresults obtained by developing research abilities of students.Key words: Eichhornia crassipes, Pistia stratiotes aquatic plants, biologically active substances.
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Extraction, Purification and Characterisation of four new alkaloids from the water plant Pistia stratiotes: POM Analyses and Identification of Potential Pharmacophore Sites
(2023-07-24)
Gulzira Izmukhanovna Yernazarova
;
Aliya Amangeldievna Ramazanova
;
Svetlana Kazbekovna Turasheva
;
Faisal A. Almalki
;
Taïbi Ben Hadda
Currently, during the period of intensive development of scientific production, it is important to obtain phytopreparations from sources of raw materials of plant origin. The biological diversity of plants is amazing. The study of the composition of aquatic plants rich in active substances of biotechnological significance is currently an urgent problem. Biologically active substances are involved in various regenerative reactions and metabolic processes in the organism, being part of enzymes. Alkaloids are important nitrogenous compounds found in the plant and are widely used in medicine. The aim of the present study was to identify alkaloid compounds from the composition of the aquatic plant Pistia stratiotes, grown in a model experiment in laboratory conditions by highly effective liquid chromatography and determine the molecular structure by nuclear magnetic resonance. In addition, based on the molecular structure of alkaloid compounds found in the aquatic plant Pistia stratiotes, a study of the properties of pharmaceutical activity was conducted on the pharmaceutical site POM (Petra/Osiris/Molinspiration). According to the results of the study, 4 types of identified alkaloids were identified by the IR, 1H, 13C-NMR method. They: 1-Aza-10-methoxy-4-methyl-2-oxo-1,2-dihydroanthracene-9-O-b-D-glucopyranoside, 4,6-dimethoxy-8-prenyloxyfuroquinoline, 4,7-dimethoxy-6 - (3’ - methyl-3’ - methoxy-2 ' - oxy) butyl-oxifuroquinoline , 4,7-dimethoxy-6 - (3’ - methyl-2’ - oxy-3 ' - chlorine)butyloxifuroquinoline. As a result of the analysis of the identified POM alkaloids (Petra/Osiris/Molinspiration), predictions of antitumor activity were made. The presence of a (NHd+--- Od-) moiety indicates a potential antitumor pharmacophore site. The challenge is to verify our hypothesis experimentally and to confront virtual POM data and real anticancer screening.
Цитирования (OpenAlex) 12Цитирования (OpenCitations) 8
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Isolation and Biotesting of Tannins from Eichhornia crassipes plants: Pom analyses and Antifungal/antiviral Pharmacophore sites Identification
(2025-04-12)
Gulzira Izmukhanovna Yernazarova
;
Aliya Amangeldievna Ramazanova
;
Svetlana Kazbekovna Turasheva
;
D. Mukasheva
;
Madina Amangeldinova
Nutrients produce various secondary metabolites, including biologically active compounds such as antifungals. The composition of E. Crassipes aquatic plant contains biologically active substances. In this article, the composition of substances in E. Crassipes was identified using IR, 1H, and 13C-NMR methods. The identified substances were characterized for biological activity using the PASS online program. This was based on their molecular structure. As a result of the program, compounds showing activity against light, viruses, earwigs, and bacteria were developed. The program's scope included testing the substances' antimicrobial activity using agar diffusion assay in experiments. Substances were extracted from the aquatic plant via chromatography-mass spectrometry, and their activity against earwigs was examined. The study revealed efficacy against Candida albicans and Candida utilis earwigs.
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THE EFFECT OF PSEUDOMONAS BACTERIA ON THE ANTIOXIDANT SYSTEM OF PLANTS UNDER CONDITIONS OF HEAVY METAL CONTAMINATION
(2026-01-01)
А.А. Ramazanova
;
Gulzira Izmukhanovna Yernazarova
;
Sana Kabdrakhmanova
;
Khaiyrnisa Aisakulova
;
А.А. Kulbekova
This study investigated changes in the antioxidant system of Phaseolus vulgaris plants grown in a medium contaminated with heavy metals (Cu, Cd, Zn) and Pseudomonas spp., with the aim of evaluating the bioremediation effect of the bacterial consortium. The results showed that in the control group, antioxidant activity was 25% in the roots, 24% in the leaves, and 27% in the stems. Upon exposure to copper (Cu 0.01), these values increased significantly to 59%, 56%, and 57%, respectively, indicating activation of the antioxidant system in response to severe oxidative stress. When the copper concentration was reduced (Cu 0.001), antioxidant activity decreased to 14% in roots, 11% in leaves, and 18% in stems. In the case of cadmium (Cd 0.01), the values were 19%, 15%, and 18%, whereas in the Cd 0.001 treatment, an increase to 25% in leaves and 31% in stems was observed. Antioxidant activity decreased under zinc (Zn 0.01) exposure and amounted to 11% in roots, 4% in leaves, and 14% in stems, while the lowest values were recorded at Zn 0.001 (3%; 1.73%; 8%). The use of the Pseudomonas spp. consortium increased plant resistance to heavy metals and contributed to the stabilization of the antioxidant system. Overall, the results demonstrate that these bacteria can be used as an effective bioremediation agent by biosorbing heavy metal ions and reducing oxidative stress in plants.
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Nutritive and Prebiotic Potentials of Chlorella and Scenedesmus Microalgae
(2026-01-01)
Gulzira Izmukhanovna Yernazarova
;
С. К. Кабдрахманова
;
Svetlana Kazbekovna Turasheva
;
А.А. Ramazanova
;
Khaiyrnisa Aisakulova
We investigated the prebiotic properties of Chlorella sp. and Scenedesmus sp.microalgae based on the analysis of their extracts.We used High-performance liquid chromatography (HPLC) and Fourier transform infrared spectroscopy (FTIR) for chemical characterisation of extract composition.Using HPLC at 272 nm, the flavonoid naringenin was identified in the extract at a concentration of 1.343
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Investigation of the Antimicrobial Activity of Biologically Active Substances Extracted from the Callus Cell Cultures of Rheum cordatum Losinsk and Rheum tataricum L. Plants (Family Polygonaceae) using Fourier infrared Spectroscopy to Analyze the Chemical Composition and Identify Active Compounds
(2026-03-16)
Madina Amangeldinova
;
Nataliya O. Kudrina
;
Gulzira Izmukhanovna Yernazarova
;
Svetlana Kazbekovna Turasheva
;
Metin Yildirim
The increasing demand for novel antimicrobial agents has led to interest in plant-derived bioactive substances (BAS). This study focuses on the establishment of callus cultures from Rheum cordatum Losinsk. and Rheum tataricum L. under in vitro conditions and the evaluation of the antimicrobial properties of BAS synthesized in these callus cells. Callus cultures were induced from leaf and stem explants using Murashige-Skoog nutrient medium supplemented with 2,4-D (0.1mg/L) and BAP (0.01mg/L). Callus formation frequency was recorded for both species, and green plant regeneration from R. cordatum calluses was observed. Antimicrobial activity was assessed by testing callus-derived extracts against various microorganisms, including gram-positive Staphylococcus aureus 6538 and Salmonella abony NTCC 6017, gram-negative Escherichia coli NTCC 8439 and Klebsiella pneumonia 700603, and the yeast-like fungus Candida albicans R50. Callus induction was successfully achieved in both species, with formation frequencies of 60±6% for R. cordatum and 72±8% for R. tataricum. Extracts from R. tataricum callus cultures exhibited antimicrobial activity against S. aureus, E. coli, and K. pneumoniae. R. cordatum callus extracts showed moderate effects on these microorganisms. The results highlight the significant potential of callus-derived rhubarb extracts in addressing bacterial and fungal pathogens. The study demonstrates the efficacy of Murashige-Skoog medium supplemented with 2,4-D and BAP in promoting callus induction and growth in rhubarb species. Extracts from rhubarb callus tissues represent significant potential in developing new antimicrobial agents effective against a wide range of pathogens, including bacterial and fungal infections. Future studies will focus on the regeneration of plants from callus cultures and the detailed pharmacological profiling of their BAS.
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Evaluation of an interdisciplinary Project-based STEM model in biotechnology education
(Suleyman Demirel University, 2026-09-30)
K. Tursynali
;
А.А. Ramazanova
;
Gulzira Izmukhanovna Yernazarova
;
G.U. Baitasheva
;
А.А. Kulbekova
The integration of STEM education into biotechnology is essential for developing research competence, interdisciplinary thinking, and practical problem-solving skills in future biology teachers. However, the implementation of interdisciplinary STEM models supported by experimental research and artificial intelligence remains limited in biotechnology education. This study aimed to develop and evaluate an interdisciplinary STEM project integrating biotechnology, ecology, chemistry, engineering, mathematics, and artificial intelligence within biology teacher education. A mixed-methods approach combining laboratory experimentation, project-based learning, questionnaires, interviews, and statistical analysis was employed. The STEM project was based on investigating the effects of copper, zinc, and cadmium on the growth of Phaseolus vulgaris, while students applied artificial intelligence tools, including ChatGPT, Claude AI, Python, and OneCompiler, for data processing, visualization, and scientific interpretation. Educational outcomes showed that 83.3% of participants reported mastering the stages of experimental planning, data collection, and data analysis, while 91.7% reported increased interest in biotechnology after completing the project. Participants also reported improved research competence, interdisciplinary understanding, and confidence in applying scientific methods to environmental problems.The scientific novelty of this study lies in the development of an interdisciplinary STEM model that integrates experimental biotechnology, project-based learning, and artificial intelligence into a unified educational framework. The proposed model contributes to strengthening research-oriented biotechnology education and provides a practical approach for preparing future biology teachers capable of addressing interdisciplinary scientific challenges.

Қазақ ұлттық қыздар педагогикалық университеті / Казахский национальный женский педагогический университет

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