Екатерина Михайловна Ким

Prof. Екатерина Михайловна Ким

Department of Pharmacy and Pharmacology, Far Eastern Federal University, Vladivostok, Primorskiy Kray, Russia
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Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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10 June 2020 in Molecules
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Mayya RazgonovaMayya Razgonova
Mayya Razgonova
AZAlexander Zakharenko
Alexander Zakharenko
Konstantin PikulaKonstantin Pikula
Konstantin Pikula
ЕКЕкатерина Михайловна Ким
Екатерина Михайловна Ким
VCValery Chernyshev
Valery Chernyshev
Kirill Sergeevich GolokhvastKirill Sergeevich Golokhvast
Kirill Sergeevich Golokhvast
Woody liana Schisandra chinensis contains valuable lignans, which are phenylpropanoids with valuable biological activity. Among green and selective extraction methods, supercritical carbon dioxide (SC-CO2) was shown to be the method of choice for the recovery of these naturally occurring compounds. Carbon dioxide (CO2) was the solvent with the flow rate (10−25 g/min) with 2% ethanol as co-solvent. In this piece of work operative parameters and working conditions were optimized by experimenting with different pressures (200–400 bars) and temperatures (40–60 °C). The extraction time varied from 60 to 120 min. HPLC-SPD-ESI -MS/MS techniques were applied to detect target analytes. Twenty-six different lignans were identified in the S. chinensis SC-CO2 extracts.

2 February 2025 in Horticulturae
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MAMujahid Ado Abubakar
Mujahid Ado Abubakar
ENElena Novitckaia
Elena Novitckaia
SMSon Oksana Mikhailovna
Son Oksana Mikhailovna
ЕКЕкатерина Михайловна Ким
Екатерина Михайловна Ким
The role of onion as the second most-consumed and cultivated vegetable around the world and its renowned qualities that lead it to be called the “queen of the kitchen” have positioned it as a vital source of nutritional and economic contributions around the world. Polyploidy serves as a groundbreaking innovation in plant breeding, improving the yield and vigor of plants. This study was conducted to determine the effects of applying different concentrations of colchicine to onion seedlings on their morphology, antioxidant activity, and dissolved sugars. The mutagen was applied to the onion seeds at three different concentrations (0.05, 0.1, and 0.2% w/v) for an exposure period of 24 h. A chromosomal analysis confirmed the induction of polyploidy, which led to the successful duplication of the chromosome number from diploid (2n = 16) to tetraploid (4n = 32). The control recorded a survival rate of 91.57%, while 83.33%, 3.33%, and 0.00% survival rates were recorded for seedlings treated with 0.05%, 0.1%, and 0.2% (w/v) concentrations of colchicine, respectively. Furthermore, the tetraploids showed significant differences in morphology, producing the tallest seedlings (reaching up to 73.6 cm tall) and the greatest average bulb diameter (of 5.64 cm) after 14 weeks. The tetraploids also showed significant differences in antioxidant activity and the amount of dissolved sugars, recording the highest DPPH scavenging percentage of 72.58% and refractive index of 1.369. Successful induction of polyploidy was achieved with the application of 0.05% (w/v) colchicine, which produced tetraploids that are morphologically and biochemically superior to other treated and control plants at a significance level of p < 0.05.

5 January 2021 in Veterinary World
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Open access
Mikhail Yurievich ShchelkanovMikhail Yurievich Shchelkanov
Mikhail Yurievich Shchelkanov
TTTatyana Tabakaeva
Tatyana Tabakaeva
PFPavel Vasilevich Fomenko
Pavel Vasilevich Fomenko
ЕКЕкатерина Михайловна Ким
Екатерина Михайловна Ким
ATAnton Vadimovich Tabakaev
Anton Vadimovich Tabakaev
IGIrina Vyacheslavovna Galkina
Irina Vyacheslavovna Galkina
Background and Aim: Uncinaria infection often appears in domestic dogs. In the present study, parasitological examination of fecal samples from 782 dogs were analyzed for the presence of Uncinaria stenocephala. Materials and Methods: Fecal samples were analyzed by means of a standardized flotation method using a saturated salt solution containing NaNO3 (specific gravity 1.38), with a centrifugation step. Results: The highest prevalence rates were found among young adult dogs (8.3%), followed by puppies (5.4%); the lowest prevalence rates were found in dogs older than 3 years (4.3%). The prevalence was 5.8% among female dogs and 7.2% in male dogs. Coinfections with roundworms and protozoan parasites were frequently observed in U. stenocephala-positive dogs (15%). In total, three types of coinfections were registered. Coinfection of U. stenocephala + Sarcocystids oocysts was recorded in 19.1% of the dogs (n=10). This may relate to higher prevalence of S. oocysts in dogs (n=153; 19.5%). There were two cases of coinfection of U. stenocephala + Toxocara canis (3.9%), which may relate to low prevalence of T. canis (3.9 %). One case of coinfection of Dipylidium caninum + U. stenocephala (0.1%) also appeared. Conclusion: The present study showed that male dogs and young dogs were most susceptible to U. stenocephala infection.

12 June 2025 in Preprints.org
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Ubaida Muhammad AdamuUbaida Muhammad Adamu
Ubaida Muhammad Adamu
MKMarina Vladimirovna Kiseleva
Marina Vladimirovna Kiseleva
ЕКЕкатерина Михайловна Ким
Екатерина Михайловна Ким
VOVladislava Vasilevna Orlova
Vladislava Vasilevna Orlova
Functional foods are increasingly becoming a part of our daily diets, as they not only provide essential nutrients but also help protect the body against non-communicable diseases, offering a range of additional health benefits. The bioactive compounds responsible for these effects are typically derived from plants. This study aims to investigate the potential of Senna occidentalis leaf and seed extracts in enhancing the nutritional and functional properties of yogurt. Its ethanolic extracts were obtained using ultrasonic water bath and cold maceration techniques, with 70% ethanol yielding the highest total phenolic content (TPC) in the leaf extracts (55.44 ± 0.1 mg GAE). Phytochemical screening confirmed the presence of flavonoids, tannins, saponins, and reducing sugars. The antioxidant activity of the extracts reached 91.65%, with the macerated seed extract performing best. Yogurt fortified with varying concentrations of these extracts was evaluated over 21 days for pH, titratable acidity, syneresis, antioxidant activity, and sensory properties. The fortified yogurts showed increased acidity and syneresis, while their antioxidant activity decreased over time. Sensory evaluation revealed that the higher the extract concentrations, the lower the acceptability, with the 5% leaf extract yogurt scoring the lowest. These findings support the incorporation of S. occidentalis extracts as functional ingredients in dairy products, though extract concentration must be optimized for consumer preference.

22 October 2024 in Preprints.org
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MAMujahid Ado Abubakar
Mujahid Ado Abubakar
ENElena Novitckaia
Elena Novitckaia
SMSon Oksana Mikhailovna
Son Oksana Mikhailovna
ЕКЕкатерина Михайловна Ким
Екатерина Михайловна Ким
The role of onion as a second most consumed and cultivated vegetable around the world and its renown qualities that made it to be called as “queen of the kitchen” have positioned it to be very vital to the nutritional and economical contributions around the world. Polyploidy serves the purpose of groundbreaking innovation towards plant breeding by improving plants’ yield and vigor. This study was conducted to determine the effect of different concentrations of colchicine on the seedlings of onion on the morphology, antioxidant activity and dissolved sugars. Three concentrations of colchicine were used; including 0.05, 0.1 and 0.2% (w/v) which were applied to the seeds of Allium cepa for the exposure period of 24 hours. Chromosomal analysis confirmed the induction of polyploidy which led to the successful duplication of the chromosomes number from diploid (2n = 16) to tetraploid (4n = 32). Successful induction of polyploidy was achieved by the application of 0.05% (w/v) concentration of colchicine as it yielded the formation of seedlings which were morphologically and biochemically superior over the remaining concentrations and control at p ≤ 0.05 probability. The 0.05% (w/v) concentration showed the highest survival rate between the treatments by recording 83.33% compared to 33.33% and 0.00% of 0.1 and 0.2% (w/v) concentrations respectively, but topped by the control which recorded 91.57% survival rate. Furthermore, the 0.05% concentration of colchicine showed significant difference in the morphology as it recorded the biggest size of seedlings by height reaching up to 73.6cm tall with the diameter of the bulbs reaching 5.64 cm after 14 weeks. It also showed significant difference in the antioxidant activity by recording the highest DPPH scavenging percentage of up to 72.58%, followed by 0.1% and control. The tetraploids also showed significant difference in the dissolved sugars as they recorded the highest refractive index between the treatments and control. The application of 0.05% (w/v) concentration of colchicine resulted in the formation of the seedlings that have superiority in the morphology, antioxidant activity and amount of dissolved sugars compared to other treatments and control.