Liubov Skrypnik

Liubov Skrypnik
Immanuel Kant Baltic Federal University | IKSUR · Institute of Living Systems

PhD

About

81
Publications
27,506
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290
Citations
Additional affiliations
September 2009 - present
Immanuel Kant Baltic Federal University
Position
  • Associate Professor at Department of Molecular Physiology and Biophysics
Description
  • Courses for specialist and bachelor: “Geochemistry and geophysics of biosphere”, “Abiotic environmental factors and health“, “Environmental ethics”. Scientific seminars “Current advances in biology” for Master students in Program “Urban ecology”.
October 2004 - present
Immanuel Kant Baltic Federal University
Position
  • Biochemical and molecular mechanisms of plant resistance by oxidative stress
Description
  • Particular attention is paid to studying the role of selenium in the regulation of the redox potential of the cell and increasing the stress tolerance of plants.
Education
October 2004 - October 2008
Immanuel Kant Baltic Federal University
Field of study
  • Ecology and Plant physiology and biochemistry
September 1999 - June 2004

Publications

Publications (81)
Article
Full-text available
The radical scavenging activity and the content of proanthocyanidins, tannins, flavonoids, and total phenolic compounds in water extracts from whole bark and outer bark of alder (Alnus glutinosa (L.) Gaertn.), oak (Quercus robur L.) and pine (Pinus sylvestris L.) trees growing in the coastal and continental zones in Kaliningrad region (Russia) were...
Article
Full-text available
Mistletoe infestation leads to a decrease in the growth of woody plants, their longevity, and partial or complete drying of the top, as well as premature death. Various environmental stress factors, both abiotic and biotic, stimulate the formation of reactive oxygen species and the development of oxidative stress in plant tissues. This study aimed...
Article
Full-text available
Lamb’s lettuce (Valerianella locusta L. Laterr.) is a leafy green vegetable that is rich in various biological active compounds and is widely used in ready-to-eat salads. The cultivation conditions and growth stage could affect the secondary metabolism in plants and thereby modify their food value. In the present study, the effect of selenium (Se)...
Article
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Rye (Secale cereale L.) is one of the most important cereal crops in Eastern and Northern Europe, showing better tolerance to environmental stress factors compared to wheat and triticale. Plant response to the crude oil-polluted soil depends on plant species, oil concentration, time of exposure, etc. The current study is aimed at investigating the...
Article
Full-text available
In this paper, the optical properties of viburnum extract flavonoids in the visible region of the spectrum were investigated and their use as a potential photosensitizer of singlet oxygen for photodynamic therapy was evaluated. The presence of long-lived excited states in the extract molecules was established by spectral methods and time-resolved s...
Article
Background: The Lamiaceae family, one of the most important herbaceous and shrub plant families, includes a wide variety of plants with biological and medicinal uses. This study aimed to conduct a comparative analysis of phenolic compounds content and biological activity of extracts from eight species of Lamiaceae plants, cultivated in a temperate...
Article
Full-text available
Today, more than ever, the search for non-trivial sources of biologically active substances is critical. Plants of the genus Rumex are noteworthy. Plants of this genus stand out for a number of advantages from the dominant plant core of meadow phytocenoses of the temperate climatic zone: a short growing season, an intensive increase in biomass, and...
Article
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Introduction. Commercial pectin is usually obtained from apples or citrus fruits. However, some wild fruits, such as hawthorn, are also rich in pectin with valuable nutritional and medical properties. The research objective was to study and improve the process of combined surfactant and enzyme-assisted extraction of pectin from hawthorn fruits. Stu...
Article
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Protection of plants against herbivorous pests is an important aspect that guarantees agricultural efficiency, i.e., food provision to populations. Environmental, water and foodstuff pollution by toxic pesticides, along with climate changes, highlight the necessity to achieve intensive development of ecologically safe methods of herbivory control....
Article
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Medicinal plants (Cotinus coggygria, Dactylorhiza maculata, Platanthera chlorantha) growing in various territories (Kaliningrad, Moscow, and Minsk regions) were the objects of research. This paper presents a study of the chemical composition of these plants. To analyze the qualitative and quantitative composition of biologically active substances,...
Article
The main physiological and biochemical characteristics and elemental composition of the lichens Xanthoria parietina (L.) Th. Fr., Parmelia sulcata Taylor, Hypogymnia physodes (L.) Nyl., and H. tubulosa (Schaer.) Hav. growing under insignificant anthropogenic impacts in one habitat were studied using optical spectroscopy analysis. The first three sp...
Article
Full-text available
The current study evaluates the role of phenylalanine ammonia-lyase (PAL) and the associated metabolic complex in the accumulation of lignin in common wheat plants (Tríticum aestívum L.) at the early stages of ontogenesis. The data analysis was performed using plant samples that had reached Phases 4 and 5 on the Feekes scale—these phases are charac...
Article
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Urban green spaces are an important component of sustainable urban development. Infestation of urban trees by mistletoe white leads to a decrease in the growth energy of woody plants and their longevity. In the present study, the peculiarities of oxidative stress development and response of antioxidant enzymes (superoxide dismutase and catalase) of...
Article
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This study reveals that fossil shungite samples exhibit antioxidant activity, can reduce oxidized components, and bind to free radicals. A sample of Sh20 (size fraction—20 µm) (1.30 mg equivalents of ascorbic acid/g of shungite; 3.46 mg equivalents of trolox/g of shungite; 0.99 mg equivalents of quercetin/g of shungite) had the maximal activity acc...
Article
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The essentiality of selenium (Se) and iodine (I) to human beings and the widespread areas of selenium and iodine deficiency determine the high significance of functional food production with high levels of these elements. In this respect, joint biofortification of agricultural crops with Se and I is especially attractive. Nevertheless, in practice...
Article
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The medicinal plant Dactylorhiza maculata (L.) Soó (family Orchidaceae) is used to treat gastritis, colic, gastrointestinal tract, and bladder diseases. This study aimed to investigate the properties and characteristics of the in vitro Dactylorhiza maculata extract. The recommended parameters for producing Dactylorhiza maculata extract were determi...
Article
Full-text available
The results of the studies have shown that to obtain an extract of a complex of biologically active substances of Cotinus coggygria, ethyl alcohol (mass fraction of alcohol 70%) with a hydromodule of 1:5 should be used, and the extraction should be carried out for 60 min at a temperature of 60 °C. The investigated plant extracts with the complex of...
Article
Full-text available
Various parts of guelder rose ( Viburnum opulus L.), including the bark, leaves, flowers, and fruits, have long been used in modern and folk medicine. This study aims to evaluate how site climatic conditions and soil properties influence the accumulation of phenolic antioxidants in flowers and fruits of Viburnum opulus L. It was established that th...
Article
The physiological and biochemical parameters and elemental composition of Hypogymnia physodes lichen samples from various phytocenoses differing in lighting conditions and atmospheric humidity were studied. A significant increase in the chlorophyll a and nitrogen contents, the maximal pheophytinization coefficient, and the minimum content of phenol...
Article
Full-text available
Heather (Calluna vulgaris (L.) Hull.) is noted for a diverse chemical composition and a broad range of biological activity. The current study was aimed at monitoring changes in the accumulation of certain groups of phenolic compounds in various organs of heather (leaves, stems, roots, rhizomes, flowers, and seeds) at different growth stages (vegeta...
Article
Full-text available
Reacting to environmental exposure, most higher plants activate secondary metabolic pathways, such as the metabolism of phenylpropanoids. This pathway results in the formation of lignin, one of the most important polymers of the plant cell, as well as a wide range of phenolic secondary metabolites. Aromatic amino acids, such as phenylalanine and ty...
Article
Full-text available
Green spaces are very important for an urban environment. Trees in cities develop under more stressful conditions and are, therefore, more susceptible to parasite including mistletoe infestation. The aim of this study was to investigate the ecological, microclimatic, and landscape factors causing the spread of European mistletoe (Viscum album L.) i...
Article
In the city of Kaliningrad a mapping of epiphytic lichens as well as measurements of microclimate parameters and the concentration of atmospheric ammonia in the habitats of the lichens were carried out. In the city center, the daily mean temperature during the measurement period in summer was higher and the air humidity was lower than on the outski...
Article
Full-text available
The factors affecting the efficiency of micelle-mediated extraction of phenolic compounds from apple pomace was investigated. Higher extraction efficiency by using as a solvent an aqueous solution of Tween 80 in comparison to Triton X-100, Span 20, Tween 20, 70% ethanol, and water was shown. Four independent variables (Tween 80 concentration, time,...
Article
In der Stadt Kaliningrad wurden eine Kartierung epiphytischer Flechten und Messungen von Mikroklimaparametern und der Ammoniakimmissionskonzentration an den Habitaten der Flechten vorgenommen. Im Stadtzentrum lagen die Tagesmitteltemperaturen im Messzeitraum im Sommer höher und die Luftfeuchtigkeit niedriger als am Stadtrand und an den ostseenahen...
Article
Full-text available
The work involved the study of the contents of ascorbic acid, carotenoids, total flavonoids, total tannins, total phenolics, and antioxidant properties of rose hips of two species: Rosa canina L. and Rosa rugosa Thunb. collected from wild bushes growing on the Curonian Spit, Sambia peninsula, and the Vistula Spit (Kaliningrad region, Russia). Speci...
Book
Full-text available
Обсуждается возможность повышения антиоксидантных свойств кормов за счет использования многолетних трав, веточных кормов, овощных культур, отходов сельскохозяйственных производств и др. Рассматриваются примеры включения в рационы сельскохозяйственным животным антиоксидантных добавок. Рекомендуется научным сотрудникам сферы кормопроизводства, препод...
Article
Full-text available
The effect of selenium biofortification on phytomass yield, selenium, essential oil and phenolic compounds content as well as antioxidant properties of basil leaves was investigated. Selenium in form of sodium selenate was applied either in nutrient solution or by foliar spraying at three levels (2.0, 5.0 and 10.0 μM). Selenium treatment significan...
Article
Full-text available
A study on lichens in the eastern part of the natural park Vishtynetsky (Kaliningrad Oblast, Nesterovsky District) for the first time was conducted. A taxonomic list (42 species) with indication of ecological groups and life forms was compiled. Data on the content of photosynthetic pigments in thallus of 18 lichen species that are most prevalent in...
Article
Full-text available
The study investigated the accumulation of phenolic compounds and the antioxidant activityofextractsofvariouspartsofR.crispusandR.obtusifolius,collectedatthefloweringstageand the fruiting stage. Half of the collected plants were divided into root, stem, leaves, and reproductive organs (inflorescence). The other half was used to study the vertical dis...
Conference Paper
Full-text available
The Curonian Spit is the largest accumulative sandy form of the Baltic region with linear dunes of the shaft-like type. The soil cover of the Curonian Spit is peculiar, it includes 5 types of soils, combined into 2 groups of fully developed and underdeveloped soils, as well as moving, drift sands devoid of vegetation. The purpose of this work is to...
Article
Full-text available
19 видов дикорастущих лекарственных растений. Установлено, что максимальным суммарным содержанием фенольных соединений отличались иван-чай, листья земляники, малины и мята (от 18,5 до 27,4 мг/г). Максимальное содержание дубильных веществ было определено в иван-чае, листьях малины и земляники (от 14,7 до 23,1 мг/г). Корреляционный анализ показал нал...
Article
Full-text available
The accumulation of selenium by rye at different stages of development depending on the dosages of selenium and pH of soil was investigated. The findings testify that in case of increased selenium content in the soil selenium concentration in the plant also increased. Moreover, it was revealed that in the process of vegetation total selenium conten...
Article
Full-text available
The antioxidant properties of fruits, flowers, leaves, bark (or stem) of elderberry (Sambucus nigra L.), red elderberry (Sambucus racemosa L.) and dwarf elder (Sambucus ebulus L.) were investigated. The total content of anthocyanins and total phenolic compounds content by using of Folin-Ciocalteu assay were determined spectrophotometrically. The to...
Article
Full-text available
The leaves of 22 woody and herbaceous plant species growing in urban ecosystems of Kalinigrad were analyzed for the total contents of water-soluble antioxidants (TAC) and polyphenol contents. The soils of test plots were assayed for lead contents in the accumulative horizon. A significant excess over the background Pb level was revealed in soil sam...
Article
Full-text available
In this paper, we investigate changes in the antioxidant levels (anthocyanins, leucoanthocyanins, catechins) and the total water-soluble antioxidants capacity in forage plants in relation to their geography, i.e. proximity to northern or coastal areas. We demonstrate that the antioxidant content increases in unfavorable conditions, being higher in...
Conference Paper
Калининградская область характеризуется своеобразием почв, спецификой их формирования и развития, значительной пестротой почвенного покрова, опытом природопользования и целым рядом экономических и политических инструментов для оптимизации использования земель самого разного назначения. В сочетании с благоприятными климатическими условиями всё это о...
Article
This article considers the concentration of lead, polyphenols and water-soluble antioxidants (AOA) in the leaves of 4 species of woody, 11 species of shrub and 7 species of herbaceous plants growing in different functional zones in the city of Kaliningrad. The accumulations of Pb – the principal pollutant in urban ecosystems – were studied in the u...
Article
Full-text available
Analyses of lichen biota within the territory of the Black Alder forest showed a decrease in species diversity from 30 species in a forest area unaffected by nesting activity, down to nine species in the main part of the Great Cormorant colony, with domination of nitrophytic lichen species. The nesting colony indirectly affects some of the physiolo...
Book
Full-text available
Характеризуется состояние овощеводства в Калининградской области в последние годы (2015—2016). Приводится агротехника возделывания в условиях Калининградской области 25 овощных культур, входящих в современный список, выращиваемых в области овощей. Существующий ассортимент овощных культур предлагается расширить, обратив внимание на нетрадиционные ра...
Conference Paper
Full-text available
The concentration of selenium in plants, animals and man are determined to a greater extent by the level of concentration of this microelement in the soil. At the same time, the availability of selenium for plants, and, consequently, its further propagation along the food chain, is strongly influenced by the physico-chemical properties of the soil...
Article
Full-text available
Одной из основных задач современной фармакогнозии является поиск новых источников биологически активных веществ с целью создания высокоэффективных лекарственных препаратов. Определенный интерес представляют растения рода щавель ( Rumex L.), которые характеризуются богатым химическим составом, а потому обладают широким спектром биологического действ...
Article
Full-text available
Tomatoes are reported to be the most consumed and processed food in the world. The correlation has been specified between the tomato food consumption expansion and reduction in the risk of certain diseases, including cancer. Researchers from across the globe concentrate on tomato and processing technologies to ensure preservation of its physical, c...
Conference Paper
Full-text available
Urbanization can be described as a global socioeconomic process, accompanied by a profound change of the anthropogenic environment and as a replacement of the natural ecosystems by the urban ones. Heavy metals occupy an important place among the different types of urban environmental pollutants. Since they do not undergo physico-chemical and biolog...
Article
Full-text available
Zusammenfassung Gegenstand der Arbeit ist eine Flechtenkartierung nach der Richtlinie VDI 3957 Blatt 13 an zehn Messpunkten des Stadt-zentrums von Kaliningrad und an zwei Messpunkten im Umland. Die Ergebnisse der Kartierung zeigen einen Luftgüteindex in der Innenstadt von Kaliningrad von 1.E5, was einer sehr geringen Luftgüte in Kombi-nation mit e...
Article
The lichen mapping (according to guideline VDI 3957 Part 13) was implemented in 10 areas in the central part of Kaliningrad and in two reference areas. The air quality index in Kaliningrad was determined as 1 .E5 - very low air quality and very strong influence of eutro- phicating substances. The average content of chlorophyll of Parmelia sulcata f...
Article
One of the main tasks of modern pharmacognosy is the screening of novel natural sources of bioactive compounds with a view to discovering new drugs. Of particular interest are plants of the genus sorrel (Rumex L.), which are containing various phytochemical compounds and therefore have a wide range of biological and medicinal activities. The phonol...
Article
The accumulation of iron, manganese, and nickel was studied in the accumulation horizon of urban soils and tree, shrub, and herb species most common in urban landscapes.
Article
Full-text available
The content of heavy metals (HM) (Pb, Zn, Cu, Ni, Mn) in soils of the city of typical for Kaliningrad has been studied in view of their various functional purposes and at different distances from the source of pollution. The results have shown that the content of heavy metals in the upper humus horizon varies widely depending on the location, the f...
Book
Full-text available
Даны современные представления об окислительном стрессе и свободных радикалах. Охарактеризованы антиоксиданты водорастворимые, жирорастворимые и ферментативные. Описаны методы, использованные при количественном определении антиоксидантов. Приведены данные количественного содержания витаминов С, Р, каротиноидов, лейкоантоцианов, антоцианов, катехино...
Conference Paper
Full-text available
Currently, technology of functional foods production is being actively developed in a number of ways. On the one hand, genetically modified foods are being created; on the other hand, ways for effective management of organic (sustainable) farming are being searched for in order to obtain not only high productivity of plants, but also to increase th...
Article
Full-text available
The studies of watersoluble antioxidants (anthocyanins, leukoanthocyanins, ascorbic acid, and total content of polyphenols, rutin, and watersoluble antioxidants) in higher plants of the Baltic region are reviewed. The patterns of antioxidant accumulation during ontogenetic development of wild plants and the impact of the environmental factors and t...
Article
Full-text available
Наиболее сильно техногенное воздействие на природную среду и население проявляется в крупных промышленных городах, которые по интенсивности и площади аномалий загрязняющих веществ представляют собой техногенные и биогеохимические провинции. В спектре загрязняющих веществ городской среды тяжелые металлы занимают значительное место, поскольку, не под...
Article
Full-text available
The patterns of water-soluble antioxidants cumulated by Baltic Sea region’s plants. Дан обзор работ по исследованию водорастворимых антиоксидантов (антоцианов, лейкоантоцианов, аскорбиновой кислоты, суммарного содержания полифенолов, рутина и водорастворимых антиоксидантов) в высших растениях Балтийского региона. Рассмотрены закономерности накоплен...
Article
Full-text available
An environmental analysis of the activity of bioflavonoid accumulation in medicinal plants. This article presents experimental data on the rutin, catechin, and leucoanthocyanin content in medicinal plants (66 species from 31 families). A significant correlation between the catechine and leucoanthocyanin content in plant tissues (r=0.89) is observed...
Conference Paper
Full-text available
Redox status is one important biophysical parameter characterizing the functional state of plant cell. This status sensitively responds to environmental change. There is a balance between oxidation and reduction processes under normal physiological conditions. However under the influence of unfavourable factors intensification of reactive oxygen sp...
Conference Paper
Full-text available
It is proved, that one has to search for substance producing plants which are of interest for in-dustrial bio-technology, concerning that the amount of produced valuable compounds does not de-pend only on plant species, nor It depends on a phase of it's ontogenetic development but it essen-tially depends on ecological factors, mostly antioxidants,...
Conference Paper
Full-text available
The effect of copper on the polyphenols content in clover and common vetch levels was studied in the model experiment. It was established high copper content in the soil increased levels of poly-phenols up to 30% (from 6.24 mg/g to 13.55 mg/g) and 40% (from 7.67 mg/g to 12.82 mg/g) com-pared with the control in in clover and common vetch levels res...
Book
Full-text available
NATURAL ANTIOXIDANTS (ENVIRONMENTAL ASPECT). This monograph presents modern concepts of free- free radicals, free radical oxidation of cellular components of antioxidants. Examined in detail the effect of environmental factors on antioxidant enzymes: superoxide dismutase, glutathione peroxidase, catalase, dehydro ascorbate reductase, ascorbate and...