Browsing by Author "Radusiene, Jolita"
Now showing items 1-20 of 32
-
Altitudinal changes in secondary metabolite contents of Hypericum androsaemum and Hypericum polyphyllum
Cirak, Cuneyt; Radusiene, Jolita; Jakstas, Valdas; Ivanauskas, Liudas; Seyis, Fatih; Yayla, Fatih (Pergamon-Elsevier Science Ltd, 2017)The genus Hypericum (Hypericaceae) has attracted scientific interest as its members have yielded many bioactive compounds. In the present study we investigated the content of hypericin, pseudohypericin, hyperforin, ... -
Altitudinal changes in the content of bioactive substances in Hypericum orientale and Hypericum pallens
Camas, Necdet; Radusiene, Jolita; Ivanauskas, Liudas; Jakstas, Valdas; Cirak, Cuneyt (Springer Heidelberg, 2014)Altitudinal changes in the content of hypericin, pseudohypericin, hyperforin, adhyperforin, chlorogenic acid, neochlorogenic acid, caffeic acid, 2,4-Dihydroxybenzoic acid, amentoflavone, hyperoside, isoquercitrin, quercitrin, ... -
Changes in phenolic content of wild and greenhouse-grown Hypericum triquetrifolium during plant development
Cirak, Cuneyt; Radusiene, Jolita; Karpaviciene, Birute; Camas, Necdet; Odabas, Mehmet Serhat (Tubitak Scientific & Technical Research Council Turkey, 2013)Hypericum triquetrifolium is a promising medicinal plant from eastern Europe and the Mediterranean area. The present study was conducted to determine ontogenetic and morphogenetic variation of chlorogenic acid, rutin, ... -
Changes in the content of bioactive substances among Hypericum montbretii populations from Turkey
Cirak, Cuneyt; Radusiene, Jolita; Ivanauskas, Liudas; Jakstas, Valdas; Camas, Necdet (Soc Brasileira Farmacognosia, 2014)In the present study, we investigated the variation in the content of seventeen secondary metabolites among Hypericum montbretii Spach., Hypericacea, populations from five different growing zones in Turkey for the first ... -
Changes in the contents of main secondary metabolites in two Turkish Hypericum species during plant development
Cirak, Cuneyt; Radusiene, Jolita; Camas, Necdet; Caliskan, Omer; Odabas, Mehmet Serhat (Informa Healthcare, 2013)Context: The genus Hypericum (Guttiferae) has received considerable scientific interest as a source of biologically active compounds. Objective: The study determined the morphogenetic and ontogenetic variation in the main ... -
Chemical composition of Hypericum species from the Taeniocarpium and Drosanthe sections
Camas, Necdet; Radusiene, Jolita; Ivanauskas, Liudas; Jakstas, Valdas; Kayikci, Samim; Cirak, Cuneyt (Springer Wien, 2014)The presence of several phytochemicals, namely naphthodianthrones hypericin and pseudohypericin, phloroglucinol derivatives hyperforin and adhyperforin, the phenolic acids as chlorogenic acid, neochlorogenic acid, caffeic ... -
Chemical constituents of Hypericum adenotrichum Spach, an endemic Turkish species
Cirak, Cueneyt; Ivanauskas, Liudas; Janulis, Valdimaras; Radusiene, Jolita (Taylor & Francis Ltd, 2009)The present study was conducted out to determine hyperforin, hypericin, pseudohypericin, chlorogenic acid, rutin, hyperoside, quercitrin, quercetin, kaempferol, apigenin-7-O-glucoside and amentoflavone contents of Hypericum ... -
Differential Phenolic Accumulation in Two Hypericum Species in Response to Inoculation with Diploceras hypericinum and Pseudomonas putida
Cirak, Cuneyt; Radusiene, Jolita; Aksoy, Hasan Murat; Mackinaite, Rimute; Stanius, Zydrunas; Camas, Necdet; Odabas, Mehmet Serhat (Czech Academy Agricultural Sciences, 2014)The genus Hypericum L. (St. John's-wort, Hypericaceae) has received scientific interest in recent years, because it is a source of a variety of bioactive compounds including the phenolics. We determine whether the typical ... -
Effect of nitrogen on herb production, secondary metabolites and antioxidant activities of Hypericum pruinatum under nitrogen application
Radusiene, Jolita; Marksa, Mindaugas; Ivanauskas, Liudas; Jakstas, Valdas; Caliskan, Omer; Kurt, Dursun; Cirak, Cuneyt (Elsevier, 2019)The optimization of growing conditions using germplasm potentials is an effective way to manage the production and quality of medicinal plant raw materials. The present study aimed to evaluate the effect of mineral nitrogen ... -
The effects of salt and drought stress on phenolic accumulation in greenhouse-grown Hypericum pruinatum
Caliskan, Omer; Radusiene, Jolita; Temizel, Kadir Ersin; Staunis, Zydrunas; Cirak, Cuneyt; Kurt, Dursun; Odabas, Mehmet Serhat (Pagepress Publ, 2017)Hypericum pruinatum is a medicinal herb containing several bioactive compounds with important pharmacological activity. In this study, we investigated the effects of the salt 0.03 -control, 1, 2.5, 4 and 8 dS m(-1) of ... -
Factors affecting the variation of bioactive compounds in Hypericum species
Cirak, Cuneyt; Radusiene, Jolita (Akademiai Kiado Zrt, 2019)The genus Hypericum (Hypericaceae) consists of 484 species from 36 sections with worldwide distribution in different areas. Turkey is considered as hot spot for diversity of Hypericum genus. Despite numerous publications, ... -
Models of estimation of the content of secondary metabolites in some Hypericum species
Odabas, Mehmet Serhat; Radusiene, Jolita; Cirak, Cueneyt; Camas, Necdet (Taylor & Francis Ltd, 2009)In the present study, models for estimation of the content of main secondary metabolites, namely hypericin, pseudohypericin, and hyperforin, were developed for Hypericum origanifolium Willd. (Guttiferae), Hypericum perfoliatum ... -
Morphogenetic and phenological changes in phenolic content of Hypericum leptophyllum, an endemic Turkish species
Seyis, Fatih; Radusiene, Jolita; Ivanauskas, Liudas; Jakstas, Valdas; Cirak, Cuneyt (Taylor & Francis Ltd, 2016)The present study was conducted to determine the morphogenetic and phenologic variations in the content of the main bioactive compounds in Hypericum leptophyllum Hochst., an endemic species from Turkish flora. Wild plants ... -
Phenolic constituents of Hypericum triquetrifolium Turra (Guttiferae) growing in Turkey: variation among populations and plant parts
Cirak, Cuneyt; Radusiene, Jolita; Janulis, Valdimaras; Ivanauskas, Liudas; Camas, Necdet; Ayan, Ali Kemal (Tubitak Scientific & Technical Research Council Turkey, 2011)Hypericum triquetrifolium Turra (Guttiferae) has received considerable scientific interest in recent years, as it is a source of a variety of biologically active compounds including phenolics. The present study was conducted ... -
Phenological changes in the chemical content of wild and greenhouse-grown Hypericum pruinatum: flavonoids
Cirak, Cuneyt; Radusiene, Jolita; Ivanauskas, Liudas; Jakstas, Valdas; Camas, Necdet (Tubitak Scientific & Technical Research Council Turkey, 2014)The present study was conducted to determine the phenological changes in the content of main flavonoids, namely amentoflavone, hyperoside, isoquercitrin, quercitrin, quercetin, avicularin, rutin, (+)-catechin, and ... -
Population Variability of Main Secondary Metabolites in Hypericum lydium Boiss. (Hypericaceae)
Cirak, Cueneyt; Radusiene, Jolita; Ivanauskas, Liudas; Jakstas, Valdas; Camas, Necdet (Shaheed Beheshti Univ, Sch Pharmacy, 2015)In the present study, we investigated the variation in the content of naphthodianthrones hypericin and pseudohypericin, phloroglucinol derivatives hyperforin and adhyperforin, the phenolic acids as chlorogenic acid, ... -
Prediction models for the phenolic contents in some Hypericum species from Turkey
Odabas, Mehmet Serhat; Radusiene, Jolita; Cirak, Cueneyt; Camas, Necdet (Asian Journal of Chemistry, 2008)In this research, models for prediction of the content of several phenolics namely chlorogenic acid, hyperoside, apigenin-7-O-glucoside, rutin, quercitrin, quercetin and viteksin were developed for Hypericum originafolium ... -
Pseudohypericin and hyperforin in Hypericum perforatum from northern turkey: Variation among populations, plant parts and phenological stages
Cirak, Cueneyt; Radusiene, Jolita; Janulis, Valdimaras; Ivanauskas, Liudas (Wiley, 2008)Hypericum perforatum is a perennial medicinal plant known as "St. John's wort" in Western Europe and has been used in the treatment of several diseases for centuries. In the present study, morphologic, phenologic and ... -
Pseudohypericin and hyperforin in two Turkish Hypericum species: Variation among plant parts and phenological stages
Cirak, Cueneyt; Radusiene, Jolita; Camas, Necdet (Pergamon-Elsevier Science Ltd, 2008)The genus Hypericum has received considerable interest from scientists, as it contains the variety of structurally diverse natural products which possess a wide array of biological properties, mainly hypericins and hyperforin. ... -
The quantitative effect of temperature and light intensity at growth in Origanum onites L.
Caliskan, Omer; Odabas, Mehmet Serhat; Cirak, Cuneyt; Radusiene, Jolita; Odabas, Ferhat (Academic Journals, 2010)The study was aimed to define the relationships between temperature, light intensity and growth parameters. Namely, net assimilation rate, relative growth rate, leaf weight ratio, leaf area ratio and specific leaf area for ...
