Olena M. Vergun

• PhD
• Senior Researcher at National Academy of Sciences of Ukraine

Glandular trichomes are important taxonomic characters in the Lamiaceae family. The objects of our investigations were plants of Lamiaceae family collected from the experimental base of Institute of Rice of the National Academy of Agrarian Sciences (Plodove, Ukraine). Fresh leaves were collected for the morphological analyse. The dimensions of glan...

The phytochemical characteristics of alien species have not yet been fully studied. Meanwhile, the reserves of their raw materials in the secondary distribution range are very large and can be used as new sources of functional ingredients for food, nutraceuticals, cosmeceuticals, and medicines. Particular attention is attracted by species which hav...

In view of global changes, it is necessary to consider plant breeding as a process of developing new varieties and cultivars for present and future needs, with an emphasis on improving their quantitative and qualitative characteristics. The aim of this study was to compare wild-growing genotypes of elderberry (Sambucus nigra L.) with three register...

Objective-to investigate the antioxidant activity of seed extracts of selected forage plants in conditions of M.M. Gryshko National Botanical Garden of the NAS of Ukraine. Material and methods. Seeds of seven forage plants researched in this study: Baptisia australis (L.) R.Br. (Fabaceae), Bu-nias erucago L., B. orientalis L. (Brassicaceae), Galega...

Lespedeza bicolor Turcz. (bush clover) is a well-known medicinal, forage, and honey plant, the plant extracts of which exhibit numerous biological activities such as antioxidant, antimicrobial, anti-inflammatory, etc. This study aimed to determine the antioxidant capacity of L. bicolor ethanol extracts from plant raw material dried at 45 and 65 °C....

Ocimum canum Sims is an aromatic, essential oil, and medicinal plant. Although this species is not as well studied as other members of the genus, such as Ocimum basilicum, there is evidence of high biological activity of extracts and use for certain diseases. The essential oil composition, according to previous data, is valuable but depends on nume...

This study aimed to test the antioxidant parameters of the flower and fruit ethanol extracts of 15 genotypes of Asimina triloba (L.) Dunal. (AzTr-01 – AzTr-15) collected in the M.M. Gryshko National Botanical Garden (Kyiv, Ukraine). Antioxidant activity of the extracts of the investigated genotypes was measured with free radical scavenging activity...

Objective: The aim of the study was to establish the micro- and macromorphological features of vegetative and generative organs of plants of species of the genus Crambe, depending on the specific characteristics of the introduction to the M.M. Gryshko National Botanical Garden NAS of Ukraine. Method: The study of vegetative and generative organs wa...

Fragaria L. species are popularly known as garden-grown (F. x ananassa Duchesne ex Rozier) or wild (F. moschata Weston and F. vesca L.) plants with biologically active compounds directly responsible for the high antioxidant potential. This work aimed to determine the total polyphenol compounds, anthocyanins, and antioxidant activity of different ex...

Echinacea Moench species (Asteraceae Bercht. & J. Presl) are one of the most known medicinal and ornamental plants with numerous pharmacological activities. The objects of this study were plant raw materials of Echinacea angustifolia DC. (Kherson Oblast, Ukraine) and E. purpurea (L.) Moench (Kherson and Poltava Oblast, Ukraine) was collected at the...

Many growers and family farmers in the countryside still conserved original and culinary important old and local crop varieties. These varieties are the basis of the food security of the rural population. Under the conditions of Slovakia, the common bean (Phaseolus vulgaris L.) has always been an important legume crop, evidenced by the hundreds of...

To determine and compare the content of biochemical compounds in fruits of nine cultivars of M. domestica Borkh. and ten of Malus spp. (given in the research materials), to select the most promising for use in further breeding and recommend for use in various directions, considering the biochemical complex of characters, taste, and marketable quali...

This study aimed to evaluate the antioxidant potential of ethanol extracts of Nigella L. species from the Kherson Oblast of Ukraine. The extracts of seeds and above-ground parts of N. damascena L., N. hispanica L., N. orientalis L., and N. sativa L. cv. Diana were used to determine the total phenolic content (TPC), total flavonoid content (TFC), to...

The results of seasonal variation of total polyphenols (TPC), flavonoids (TFC) and phenolic acid (TPAC) accumulation and antioxidant activity of Artemisia balchanorum Krasch. × Artemisia taurica Willd. genotypes from the Kherson Oblast of Ukraine represented in this study. The total polyphenol content was identified by the Folin-Ciocalteu method an...

This study aimed to evaluate the parameters of antioxidant activity of different parts of Silphium spp. during budding and flowering periods. The four species of Silphium L. genus from the experimental collection of the Cultural Flora Department of M.M. Gryshko National Botanical Garden of the NAS of Ukraine were prepared and used in this research....

The interest in natural products, namely, bee products is actual nowadays. The Bee pollen is a rich source of nutrients and biologically active compounds with numerous biological activities such as antioxidant, antimicrobial, anticancer, anti-inflammatory, etc. The search for new plant raw as a source of natural products has a practical meaning. Th...

The morphological variability of the male and female flowers of 23 date plum (Diospyros lotus L.) genotypes found together at date plum collection in Arboretum Mlynany (Slovak Republic) was investigated. The collection consists of seed-propagated genotypes, which were established in 1970 with introduced seeds from different countries. Results showe...

Purpose. To carry out an analysis of domestic and foreign scientific literature sources, information resources and the results of previous studies, based on which to evaluate the biological and ecological features and productive potential of plants Vigna genus and to determine their prospects for introduction in Ukraine. Methods. Inthe process of r...

Nutt. and A. austriaca L. Methods. Determination of the elemental composition of plant material was carried out by the X-ray fluorescence method. Results. The content of mineral elements in plants depends on their individual ability to absorb elements from the soil and accumulate them in the roots, leaves and flowers. Plant samples of three species...

Plants of Vigna Savi genus are widely used in the world as food and medicinal plants. Most investigations propagated the biochemical composition and biological activity of seeds of these plants due to the high content of proteins but fewer studies about the above-ground plant part. The aim of this study focused on the investigation of the antioxida...

In this study gives the characteristic of Salvia officinalis L. genotypes (Lamiaceae)grown in the Southern Steppe of Ukraine. S. officinalis one of the most well-known plants from Salvia L. genus that is used as an aromatic, medicinal, and culinary herb. The plant raw material of this plant is characterized by numerous biological activities that al...

The review of previous studies on Paulownia spp. showed that these plants are valuable raw materials with polyfunctional use among which are medicinal, forage, energetic, etc. This study demonstrated the accumulation of selected biochemical components in the different parts of Paulownia tomentosa (Thunb.) Steud. genotypes plants by the end of veget...

The plants from Salvia L. (sage) genus are well-known as culinary, ornamental, aromatic, and medicine plants widely distributed in the world. The plant raw of these plants contains numerous biologically active compounds that determine the different biological activities. This study aimed to evaluate the antioxidant activity and polyphenol content o...

Assessment of the prospects of introduced and created varieties of Lavandula angustifolia L. in the conditions of the Southern Steppe in terms of yield and essential oil content in raw materials, as well as the influence of the weather conditions of the year on these economically valuable traits is given. The study included 11 samples of Lavandula...

Aim. To conduct a comprehensive study of morphological features of the genus Vigna plants, to assess their productive potential depending on the species characteristics under the conditions of introduction in the Right-Bank Forest-Steppe of Ukraine. Methods. The main method of work was a comparative morphological analysis of plants grown from seeds...

Plants from Fabaceae Lindl. are widely distributed in the world as economically important crops due to their high content of useful nutrients. Species of the Vigna L. genus are used in many countries of the world because of the high content of protein in the seeds. However, no less important is to study the biochemical composition of above-ground p...

Cosmos sulphureus is an adventitious species for Europe and Ukraine in particular. It originates from Central and South America, where it grows in tropical and subtropical climates. The climatic conditions of Kyiv are characterized as temperate, with an absolute temperature minimum of –32.2 °C, an absolute maximum of +39.9 °C, and average annual ra...

This scientific work was aimed to evaluate the antioxidant potential of aromatic plants of Thymus spp. in the East of Ukraine. These plants are known as medicinal and food around the world. All antioxidant parameters were investigated spectrophotometrically: total content of polyphenols (TPC), the total content of phenolic acids (TPAC), the total c...

Мета. Встановити особливості формування елементів продуктивності рослин видів роду Galega залежно від сортових властивостей та умов вегетації за інтродукції в Правобережному Лісостепу України. Методи. Упродовж 2004–2020 рр. в лабораторних та польових умовах Національного ботанічного саду досліджували шість сортів рослин видів роду козлятника (Galeg...

Intr0ducti0n. Because plants are an important factor in the existence of the biosphere and life on Earth, plant resources are an invaluable asset that requires comprehensive study, conservation and rational use in the context of global climate change. Matcrials and mcth0ds. The subject of research was the collection of spice, essential, medicinal,...

It is known that a polymorphic population consisting of a large number of genotypes adapts more rapidly to the environment conditions. The availability of a large gene pool predetermines the success of the introduction and further breeding of new cultivars with economically valuable features. Morphometrics is a classical tool for studying the ampli...

Plants of Crambe spp. belong to Brassicaceae Burnett family and some of them are known as economically important species. Extracts of Crambe spp. exhibited numerous biological activities such as antioxidant, antimicrobial, antiproliferative, cytotoxic, etc. This study was aimed to research morphometric parameters of plants of five species of Crambe...

Purpose. To determine mineral composition of plants of species of the genus Artemisia (A. dracunculus L., A. abrotanum L. and A. argyi H.Lév. & Vaniot) to determine the possibility of their safe use in the food and pharmaceutical industries of Ukraine. Methods. X‑ray fluorescence method for determining the elemental composition of plant raw materia...

Echinocystis lobata (Mich.) Torr. et Gray extracts were investigated for their bioactive compounds and their potential for natural antioxidant properties. In vitro antioxidant activity of methanol, ethanol, and water extracts were evaluated by 1,1-diphenyl-picrylhydrazyl (DPPH) radical scavenging activity. Total phenolic content (TPC) and total fl...

An international team of scientists continues to study the resource potential of non-conventional or little-utilized plants. Pawpaw (Asimina triloba (L.) Dunal) fruit (pulp and peel) and seeds were analyzed for their nutritional compositions. Seeds exhibited significantly higher levels of crude protein, lipid, and vitamin E (11.82 %, 34.0 %, and 20...

Plants from natural flora (wild-growing) as well as cultural plants demonstrated numerous useful properties that play an important role in human life. They often can be used as medicinal, forage, food, etc. Searching for new sources of valuable capacities of wild plants still is actual. Humulus lupulus L. (hop) is well-known species from the small...

Pseudocydonia sinensis (Thouin) C. K. Schneid. less known plant species in the Ukraine conditions, but the fruits were widely used in traditional Chinese medicine for the treatment of asthma, colds, sore throat, mastitis, rheumatoid arthritis, and tuberculosis. The content of protein, ash, and lipids in the seeds was found to be greater than in the...

Purpose. Determine a number of morphometric and biochemical parameters of various genotypes of Bunias orientalis L. in the M. M. Gryshko National Botanical Garden of the NAS of Ukraine (NBG). Methods. Plant samples of B. orientalis (6 genotypes created in the NBG) were examined during the flowering stage. Determination of dry matter, ash, calcium w...

Background. The search for new plant raw material as a potential source of antioxidants is still ongoing. This study aimed to evaluate the antioxidant and antimicrobial capacity of the plant raw material of Crambe spp. during vegetation. Materials and methods. The free radical scavenging activity and molybdenum reducing power of the extracts were u...

Background: The search for new plant raw material as a potential source of antioxidants is still ongoing. This study aimed to evaluate the antioxidant and antimicrobial capacity of the plant raw material of Crambe spp. during vegetation. Methods: The free radical scavenging activity and molybdenum reducing power of the extracts were used to dete...

Background: Economically important vegetables are a strong source of antioxidants with different characteristics. Capsicum L. (pepper) is an important agricultural plant because of its economical, medicinal, and nutritional values. Methods: This study aimed to test antioxidant parameters in the fruits of 9 cultivars of Capsicum annuum L. (CA 01-...

Fruits of Lycium possess therapeutic properties due to which they are used in traditional and folk medicine and can be used as a kind of functional food. The objective of this study was to evaluate the biochemical characterization of Lycium L. (L. barbarum L., L. chinense Mill. and L. truncatum Y. C. Wang) fruits for 16 cultivars and varieties from...

Diversity of Sambucus nigra pollen within Slovakia in selected morphological characters by SEM study. Biosystems Diversity, 28(4), 399-404. doi:10.15421/012051 This study analyzed pollen morphology and characteristics of 20 Sambucus nigra L. genotypes from populations of various ecotypes and geographical localities from the territory of Slovakia....

Five Astragalus species (A. cicer, A. falcatus, A. galegiformis, A. glycyphyllos, and A. ponticus) grown at the M.M. Gryshko National Botanical Garden of the National Academy of Sciences of Ukraine were investigated. Plant raw material was collected at different ontogenetic stages, including budding, flowering, and fruiting. After that, the content...

Background: Sweet sorghum (Sorghum saccharatum (L.) Moench) is a unique crop with great potential to serve both the food and energy industries. It is due to the possibility of (bio)ethanol production both from the juice and biomass of this crop. The sorghum stems juice contains sugar in the levels similar to that of sugarcane. Besides, low cultivat...

Background Switchgrass ( Panicum virgatum L.) is a promising C4-photosynthetising perennial grass and an important energy crop. It is resistant to drought, cold and winter frost, endures flooding and shows high performance at minimal energy consumption for cultivation. Methods The purpose of the work was to develop and introduce high-yielding geno...

Pseudocydonia sinensis (Thouin) C.K. Schneid. less known plant species in the Ukraine conditions, but the fruits were widely used in traditional Chinese medicine for the treatment of asthma, colds, sore throat, mastitis, rheumatoid arthritis, and tuberculosis. In this study, chemical compositions of the leaves of Pseudocydonia sinensis were investi...

Many alien invasive species are characterized by the accumulation of biologically active substances antioxidants, which are used in the prevention of diseases of the cardiovascular system and many cancers. The purpose of this study was to compare the antioxidant (antiradical) properties of Adenocaulon adhaerescens Maxim extracts obtained from plant...

Ipomoea batatas (L.) Lam. (sweet potato) is a popular food crop that is planted vegetatively and native to the American tropics. It is one of the most economically important crops alongside other that widely used in the world. This study was aimed to investigate the biochemical composition of plant raw material of I. batatas in conditions of M.M. G...

This study was aimed to investigate the biochemical composition of plant raw material of Artemisia spp. in conditions of M.M. Gryshko National Botanical Garden of the NAS of Ukraine (Kyiv) at both budding and flowering stages. It was investigated the following species of Artemisia L. genus: A. abrotanum L., A. annua L., A. argyi H. Lev. & Vaniot, A...

Searching for new plant raw material with antioxidant activity is still actual. This study was aimed to evaluate the antioxidant potential of selected plants from Fabaceae: Coronilla varia L., Desmodium canadense (L.) DC., Glycyrrhiza glabra L., Lathyrus grandiflorus Sibth. & Smith, Lespedeza bicolor Turcz., Onobrychis arenaria (Kit.) D.C., O. gran...

Asteraceae Bercht. & J. Presl. is a large family of plants with a different direction of use, among which are medicine, decorative, dietary crops that widely have used in human life. Plant raw material of these plants is a source of biologically active compounds with numerous biological activities such as antioxidant, antimicrobial, anti-inflammato...

Solidago canadensis L. was introduced to Europe as an ornamental plant from North America in 1645 and began to spread during the XIX-XX centuries. Nowadays the species is considered the most aggressive invasive species. On the other hand, S. canadensis is considered to be a medicinal plant. The raw material known as Herba Solidaginis includes herbs...

The aim of the research is the determination of the total antioxidant activity and the content of phenolic compounds of the leaves of 12 species of non-traditional plants, namely, Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem., Aronia mitschurinii A.K. Skvortsov & Maitul., Castanea sativa Mill., Chaenomeles japonica (Thunb.) Lindl., Cornus mas L.,...

Background: Sea buckthorn is a good and possible source of a wide range of bioactive compounds with a positive effect on the human body, especially polyphenols and carotenoids. Methods: The present study aimed to evaluate the antioxidant and antimicrobial activities of Hippophae rhamnoides L. products - 100% oil, 100% juice, dry berries, and tea...

Chokeberry (Aronia Medik.) is a non-traditional fruit plant known as a rich source of biologically active compounds and inhibits the numerous biological activities. We compared the antioxidant activity and phenolic compounds of fruits between widely cultivated Aronia mitschurinii (AM-TCH, from Tchekhov district; AM-D, from Dmitrov district; AM-OZ,...

Background: Neglected and underutilized plant species could serve as a valuable source of natural bioactive compounds. The objective of this study was to evaluate the biological activity of Chinese quince (Pseudocydonia sinensis Schneid) genotypes of Ukrainian and Slovak origin. Methods: The content of the total antioxidant activity (DPPH method...

The plant raw material of Galega officinalis L. (goat's rue) and Galega orientalis Lam. (fodder galega) investigated in this study. These species are known as fodder crops with high productivity of green mass and as medicine plants. The current study was aimed to evaluate an accumulation in dry raw of selected plants the total content of phenolic a...

Polyphenol compounds are the secondary metabolites of plant origin that are widely distributed. They exhibit a wide spectrum of biological activities, among which is antioxidant activity. Investigation of polyphenol content and their antioxidant activity of aromatic herbs was the main goal of this study. Plant material of this study was Hyssopus of...

Objective — to evaluate the antioxidant potential of leaves extracts of four selected forage plants in conditions of M.M. Gryshko National Botanical Garden of the NAS of Ukraine. Material and methods. In this study used dried raw of Brassica campestris L. f. annua DC., cv. Chanita (Brassicaceae Burnett), Desmodium canadensis DC. (Fabaceae Lindl.),...

This study investigated the content of chlorophyll a (Chl a), b (Chl b), carotenoids (car) and their ratio in four species of Crambe L. during vegetation: C. cordifolia Steven, C. koktebelica (Junge) N.Busch, C. maritima L., C. steveniana Rupr. collected in the M.M. Gryshko National Botanical Garden of the NAS of Ukraine (Kyjiv). The middle height...

Investigation of accumulation of different compounds in above-ground part of these plants an important aspect for evaluation of perspective of use. The aim of this study was to compare the peculiarities of the biochemical composition of Crambe species dynamically. Plant material collected from the experimental collection of M.M. Gryshko National Bo...

The study of the adaptability of alien plant species is very important. According to this characteristic there is possible to forecast their further spreading in the secondary distribution range. This is especially relevant for the species having already "escaped" from cultivation and started actively invading the natural communities. Well known th...

Objective-to evaluate the antioxidant potential of ethanol extracts of wild selected plants in conditions of M.M. Gryshko National Botanical Garden of the NAS of Ukraine through the determination of phenolic compounds. Material and methods. In this study used dried raw of Cichorium intybus L., Lamium purpureum L. and Viscum album L. Plants of C. in...

Objective-to evaluate the biochemical composition of plant raw material of species of the Silphium L. genus in M.M. Gryshko National Botanical Garden of the NAS of Ukraine. Material and methods. In this study investigated following species of Silphium genus and one cultivar: S. lacinatum L., S. in tegrifolium Milchx., S. perfoliatum L., S. perfolia...

Pigment complex is an important parameter in the ecological study and it is a marker of plant condition related to the environment. In this case, the most used parameters are the content of chlorophylls, carotenoids, and their ratio. The previous study of Crambe abissinica Hochst showed that exists a correlation between the content of nitrogen and...

The aim of the research is the determination of the total antioxidant activity and the content of phenolic compounds of the leaves of 10 species of non-traditional plants, namely, Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem., Aronia mitschurinii A.K. Skvortsov & Maitul., Castanea sativa Mill., Cornus mas L., Diospyros kaki L., Diospyros lotus L....

The aim of the study was to determine total antioxidant activity (DPPH and phosphomolybdenum method) and the content of phenolic compounds of the fresh fruits and jellies made from one species (Actinidia chinensis Planch Cornus mas L., Diospyros virginiana L., Chaenomeles japonica (Thunb.) Lindl. Ex Spach, Lonicera caerulea L., Mespilus germanica L...