Browsing by Author "Camas, Necdet"
Now showing items 1-20 of 25
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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, ... -
Breaking of seed dormancy in Hypericum leptophyllum Hochst., an endemic Turkish species
Camas, Necdet; Caliskan, Omer (Academic Journals, 2011)Seed germination requirements of the endemic Turkish species of Hypericum, Hypericum leptophyllum Hochst. were studied by performing some pre-soaking treatments with the aim of describing suitable germination protocols for ... -
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 ... -
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 ... -
Effects of temperature and light intensity on growth of fodder beet (Beta vulgaris L. var. Crassa mansf.)
Albayrak, Sebahattin; Camas, Necdet (Bangladesh Botanical Soc, 2007)Changes in plant growth viz. leaf area, leaf weight ratio, root weight ratio, dry leaf weight, dry root weight, total plant dry weight, specific leaf area, leaf thickness, leaf area ratio, net assimilation rate and relative ... -
Elemental analysis of some important tobacco varieties (Nicotiana tabacum L.) by WDXRF spectroscopy
Camas, Necdet; Karabulut, Bunyamin; Karabulut, Abdulhalik (Asian Journal of Chemistry, 2007)Wavelength dispersive X-ray fluorescence (WDXRF) analysis, a rapid and non-destructive technique, is used for determining trace and heavy elements in tobacco selected from different districts of Turkey. By this technique, ... -
Elemental analysis of tobacco leaves by FAAS and WDXRF spectroscopy
Camas, Necdet; Arslan, Burhan; Uyanik, Ahmet (Asian Journal of Chemistry, 2008)The intensity of the different elements in tobacco leaves was comparatively determined by using flame atomic absorption (FAAS) and wavelength dispersive X-ray florescence (WDXRF) methods. The accuracy of both methods was ... -
Estimates of broad-sense heritability for seed yield and yield components of safflower (Carthamus tinctorius L.)
Camas, Necdet; Esendal, Enver (Blackwell Publishing, 2006)This study was carried out to estimate the broad-sense heritability for seed yield and some yield components of safflower (Carthamus tinctorius L.) cultivars. The experimental design was a randomized complete block design ... -
Estimating Chlorophyll Concentration Index in Sugar Beet Leaves Using an Artificial Neural Network
Caliskan, Omer; Kurt, Dursun; Camas, Necdet; Odabas, Mehmet Serhat (Hard, 2020)The artificial neural network (ANN) method was used in this study for predicting sugar beet (Beta vulgaris L.) leaf chlorophyll concentration from leaves. The experiment was carried out in field conditions in 2015-2016. ... -
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 ... -
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 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 effects of temperature and light intensity on hyperforin and hypericins accumulation in Hypericum perforatum L
Odabas, Mehmet Serhat; Radugiene, Jolita; Camas, Necdet; Janulis, Valdimaras; Ivanauskas, Liudas; Cirak, Cueneyt (Academic Journals, 2009)The quantitative effects of temperature and light intensity on accumulations of hyperforin, hypericin and pseudohypericin were examined in greenhouse-grown Hypericum perforatum L. plants. Polyethylene cover of 50% transparency ... -
The Quantitative Effects of Temperature and Light Intensity on Phenolics Accumulation in St. John's Wort (Hypericum perforatum)
Odabas, Mehmet Serhat; Camas, Necdet; Cirak, Cuneyt; Radusiene, Jolita; Janulis, Valdimaras; Ivanauskas, Liudas (Natural Products Inc, 2010)The quantitative effects of temperature and light intensity on accumulation of phenolics were examined on greenhouse-grown plants of Hypericum perforatum L. Plants were grown in a greenhouse separated into two parts: shaded ...
