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Currenly, Madonna lily (Lilium candidum L.) is considered as one of the most important ornamental and perfumery plants. Madonna lily is currently propagated via seed or bulb scales. However, seed derived plants reaches sexual maturity at... more
Currenly, Madonna lily (Lilium candidum L.) is considered as one of the most important ornamental and perfumery plants. Madonna lily is currently propagated via seed or bulb scales. However, seed derived plants reaches sexual maturity at the end of five years and flower production is interrupted in vegetative propagation via bulb scales because fertile bulbs are needed as source of scale. To overcome the two obstacles, stems of mature plants were used as material for bulb production in the current study. For this purpose, the stems, obtained from plants at the end of flowering were stored in cardboard boxes under the conditions of darkness, normal temperature and pressure (20°C and 1 atm) during four months. At the end of this period, it was observed that 14 bulbs per stem formed on the stored stems. The stem derived bulbs were cultivated in pots and were observed to determine their development performances and some morphological characters until reaching flowering during three year...
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Reliable equations were offered to predict leaf area for Trigonella foenum. Lamina width, length and leaf area were measured without destroying plant to develop the models. All equations produced for leaf area were derived as affected by... more
Reliable equations were offered to predict leaf area for Trigonella foenum. Lamina width, length and leaf area were measured without destroying plant to develop the models. All equations produced for leaf area were derived as affected by leaf length and leaf width. As a result of ANOVA and multi-regression analysis, it was found that there was close relationship between actual and predicted growth parameters. The produced leaf area prediction models in the present study are LA= (a) + (b x L) + (c x W) where LA is leaf area, W is leaf width, L is leaf length and a, b, c are co-efficiencies. R 2 values and standard errors were found to be significant at the p<0.001 significance
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Tubers of the tuberous orchids have been collected for centuries, and used for medicinal purposes as well as in beverage and ice-cream industry. These orchids (Sahlep orchids) cannot be propagated vegetatively as they generally do not... more
Tubers of the tuberous orchids have been collected for centuries, and used for medicinal purposes as well as in beverage and ice-cream industry. These orchids (Sahlep orchids) cannot be propagated vegetatively as they generally do not yield more than one tuber in a year. Seeds do not have microscopic endosperms; they have quite small chance of germination and successful establishment. These orchids are not cultivated and are usually collected from natural populations. Therefore, they are under threat of extinction and thus are placed under protection worldwide with national and international treaties. In this study, specimens of the threatened orchid taxa Ophrys sphegodes subsp. mammosa (Desf.) Soo ex E. Nelson orchid, were stimulated to grow tuber twice in a single vegetation period. Plants’ ability to develop new tubers was tested and a new propagation method was proposed for the first time worldwide. Plants harvested at the beginning, middle, and end of flowering period were re-p...
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The present study was conducted out to determine amentoflavone and mangiferin contents of Hypericum calycinum, Hypericum cardiophyllum and Hypericum bithynicum, growing wild in Turkey. The aerial parts representing a total of 30... more
The present study was conducted out to determine amentoflavone and mangiferin contents of Hypericum calycinum, Hypericum cardiophyllum and Hypericum bithynicum, growing wild in Turkey. The aerial parts representing a total of 30 individuals were collected at full flowering, dried at room temperature and assayed for secondary metabolite concentrations by HPLC-PDA. Both compounds were detected in all three species in different amounts depending on plant tissue. Results were discussed in phytochemical point of view. This is the first report on chemistry of H. cardiophyllum. Keywords: Amentoflavone, hypericum species, HPLC, mangiferin Cite this Article Cuneyt Cirak, Jolita Radusiene, Dursun Kurt et al . Amentoflavone and Mangiferin in Hypericum calycinum , Hypericum cardiophyllum and Hypericum bithynicum . Research & Reviews: Journal of Herbal Science . 2017; 6(1): 10–13p.
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Hypericum orientale L. that is growing in high altitudes is used traditionally for hemorrhoids in Turkish folk medicine. In the present study, models were developed to estimate the altitudinal variation in secondary metabolite contents of... more
Hypericum orientale L. that is growing in high altitudes is used traditionally for hemorrhoids in Turkish folk medicine. In the present study, models were developed to estimate the altitudinal variation in secondary metabolite contents of Hypericum orientale growing wild in “Güldağı” mountain, Turkey. Aerial parts of 30 flowering individuals were collected at six different altitudes (500, 1150, 1650, 2100, 2720 and 3250 m). Actual secondary metabolite contents of plants were measured by high performance liquid chromatography method. Multiple regression analysis was performed for each altitude and chemical separately to develop multiple regression models. The R coefficient values between the predicted and observed contents of secondary metabolites were determined as 0.89 for hyperoside and neochlorogenic acid, 0.94 for rutin, 0.95 for avicularin, 0.97 for quercetin, 0.98 for hypericin, pseudohypericin, cholorogenic acid, and 0.99 for hyperforin, 2,4-dihydroxybenzoic acid, amentoflavo...
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Ekvator kusagindan kuzeyde Iskandinav ulkelerine kadar dunyanin farkli cografyalarinda yayilis gosteren 482 Hypericum turu bulunmaktadir. Bu turler dunya genelinde halk ilaci olarak yuzyillardan bu yana sinir hastaliklari, adet kramplari,... more
Ekvator kusagindan kuzeyde Iskandinav ulkelerine kadar dunyanin farkli cografyalarinda yayilis gosteren 482 Hypericum turu bulunmaktadir. Bu turler dunya genelinde halk ilaci olarak yuzyillardan bu yana sinir hastaliklari, adet kramplari, siyatik, eklem iltihabi ve midevi rahatsizliklardan kaynaklanan agrilarin giderilmesinde ve bazi cilt hastaliklarinin tedavisinde kullanilmaktadir. Hypericum turleri icerisinde en yaygin ve populer olani Hypericum perforatum L.’dur. Bu tur son 30 yildan beri bitki klinik ve laboratuar sartlarinda yogun olarak calisilmakta olup gunumuzde bilhassa depresyon tedavisinde yogun olarak kullanilmaktadir. Ulkemiz kantaron, binbirdelik otu, kan otu, kilic otu, yaraotu, kuzukiran gibi yoresel adlarla bilinen Hypericum turleri bakimindan onemli bir merkezdir ve mevcut 96 turun 46’si endemiktir. Ancak dunya literaturunun aksine bu turler ile ilgili ulkemiz sartlarinda yurutulen calismalarin sayisi oldukca azdir. Ayrica bu bitkiler tur ayrimi gozetmeksizin doga...
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In this study, the chemical and morphological diversity among eleven wild populations of Hypericum aviculariifolium Jaub. et Spach subsp. depilatum (Freyn et Bornm.) N. Robson var. depilatum, an endemic Turkish species was studied. These... more
In this study, the chemical and morphological diversity among eleven wild populations of Hypericum aviculariifolium Jaub. et Spach subsp. depilatum (Freyn et Bornm.) N. Robson var. depilatum, an endemic Turkish species was studied. These populations were investigated for their contents of hypericin, pseudohypericin, hyperforin, the chlorogenic, neochlorogenic, caffeic and 2,4-dihydroxybenzoic acids, hyperoside, quercitrin, isoquercitrin, avicularin, 13,118 biapigenin, (+)-catechin and (-)-epicatechin as well as for their morphological traits, including density of leaf light and dark glands, leaf area, leaf length/width ratio and plant height. The top two-thirds of the plants representing thirty individuals was harvested at full flowering from eleven sites and analyzed for the content of bioactive compounds by high-performance liquid chromatography after being dried at room temperature. Morphological characterization of the wild populations was performed on twenty randomly selected i...
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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 MgSO4, CaCl2 and... more
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 MgSO4, CaCl2 and NaCl salts) and drought stress (80, 100 and 120% of required water) on the content of phenolic compounds, namely chlorogenic acid, rutin, hyperoside, isoquercetine, quercitrine and quercetine in greenhouse grown plantlets. In general, the salt stress especially in elevating doses increased the levels of all of the compounds analysed, whereas drought stress did not cause a significant chance in chemical content of the plantlets. The present results indicated that abiotic stress factors, particularly salinity, have a marked influence on the content of phenolic constituents in H. pruinatum and it is a salt tolerant species. The results also indicated that phenolic compounds play significant physiological role in salinity tolerance.
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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, adhyperforin,... more
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, adhyperforin, chlorogenic acid, neochlorogenic acid, caffeic acid, 2,4-dihydroxybenzoic acid, 13,II8-biapigenin, hyperoside, isoquercitrin, quercitrin, quercetin, avicularin, rutin, (+)-catechin and (−)-epicatechin in aerial parts of plants from populations of H. androsaemum L. and H. polyphyllum Boiss. & Bal. from Turkey growing at different altitudes. The plant materials were dried and subsequently assayed for chemical content by HPLC. All the tested compounds were detected in both species at varying levels depending upon the altitude the plants were growing, except for hypercins and rutin which did not accumulate in H. androsaemum. It was observed that overall the compounds were more abundant in plants from higher altitudes. The differences in the levels of the compounds could contribute to the ability of the plants to deal with the abiotic stress of lower temperature and higher ultraviolet (UV)-B radiation which would be greater at higher altitudes compared to lower altitudes.
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Abstract Eight Hypericum species native to Southern Turkey from Drosanthe and Olympia sections were investigated for the presence of several bioactive compounds, namely, hypericin, pseudohypericin, hyperforin, adhyperforin, the... more
Abstract Eight Hypericum species native to Southern Turkey from Drosanthe and Olympia sections were investigated for the presence of several bioactive compounds, namely, hypericin, pseudohypericin, hyperforin, adhyperforin, the chlorogenic, neochlorogenic, caffeic and 2,4-dihydroxybenzoic acids, hyperoside, isoquercitrin, quercitrin, quercetin, avicularin, rutin, (+)-catechin, (−)-epicatechin, mangiferin, I3, II8-biapigenin, and amentoflavone for the first time. Plants were harvested at flowering, dried at room temperature, dissected into different tissues, and assayed for chemical contents. HPLC analysis of methanolic fractions displayed similar chemical profile and significant quantitative differences among the investigated taxa. The present results support the taxonomic value of hypericins, rutin, and mangiferin at the sectional level and make an important contribution to our current knowledge about Hypericum chemistry. Such kind of data could also be beneficial for explanation of the chemotaxonomic utility of the corresponding compounds as well as phytochemical evaluation of the species tested.
Research Interests: Botany, Chemistry, Plant Biology, Ecology, Phytochemical, and 5 moreQuercetin, Hypericum, Mangiferin, Hypericin, and Rutin
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 were harvested... more
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 were harvested at five phenological stages: vegetative, floral budding, full flowering, fresh fruiting, and mature fruiting, and assayed for chemical content by HPLC. Results indicated that H. leptophyllum did not accumulate hypericin, pseudohypericin, hyperforin, and adhyperforin. The phenolic content in whole plants increased generally during plant phenology and higher accumulation levels were observed at flowering. Among the reproductive organs, amentoflavone, quercetin, avicularin, and hyperoside contents were the highest in floral buds (2.09, 2.18, 0.55, and 2.62 mg g−1 dry mass (DM), respectively). Leaves harvested at the floral budding stage produced the highest content of chlorogenic acid, neochlorogenic acid, caffeic acid, and isoquercetin (53.32, 6.25, 0....
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Abstract ??rak C., Radu??ien?? J., Janulis V. and Ivanauskas L. 2007. Secondary metabolites in Hypericum perfoliatum: variation among plant parts and phenological stages. Bot. Helv. 117: 29???36. The genus Hypericum is a source of... more
Abstract ??rak C., Radu??ien?? J., Janulis V. and Ivanauskas L. 2007. Secondary metabolites in Hypericum perfoliatum: variation among plant parts and phenological stages. Bot. Helv. 117: 29???36. The genus Hypericum is a source of biologically active compounds, notably ...
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The present study was conducted to determine the variation in the content of several plant chemicals, namely hyperforin, hypericin, pseudohypericin, chlorogenic acid, rutin, hyperoside, isoquercetine, kaempferol, quercitrine and... more
The present study was conducted to determine the variation in the content of several plant chemicals, namely hyperforin, hypericin, pseudohypericin, chlorogenic acid, rutin, hyperoside, isoquercetine, kaempferol, quercitrine and quercetine among five Hypericum pruinatum Boiss. & Bal. populations from Northern Turkey. The aerial parts representing a total of 30 shoots were collected at full flowering. After dried at room temperature, they were assayed for the chemicals by HPLC and the presence of isoquercetine and kaempferol in this species was reported by us for the first time. The populations varied significantly in chemical contents. Plants from Ladik population produced the highest amount of hypericin, chlorogenic acid, hyperoside, isoquercetine, quercitrine and quercetine. Hyperforin and rutin of whole shoots reached the highest level in Cankiri population. The chemical variation among the populations and plant parts was discussed as possible results of different genetic and env...
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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, neochlorogenic acid,... more
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, neochlorogenic acid, 2,4-dihydroxybenzoic acid, and the flavonols, namely, hyperoside, isoquercitrin, quercitrin, quercetin, avicularin, rutin, (+)-catechin and (-)-epicatechin, and biflavonoid amentoflavone among wild H. lydium Boiss. populations from five different growing sites of Turkey for the first time. The aerial parts representing a total of 30 individuals were collected at full flowering and dissected into floral, leaf and stem tissues. After dried at room temperature, the plant materials were assayed for chemical contents by HPLC. The populations varied significantly in the content of chemical compounds. Among different plant parts, flowers were found to be main repository site of hyperforin, adhyperforin, hypericin, pseudohypericin, amentoflavone, quercetin, ...
Research Interests: Botany, Biology, Medicine, Quercetin, Hypericum, and 4 moreHypericin, Chlorogenic Acid, Hypericum perforatum, and Rutin
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 phenolic... more
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 phenolic constituents of Hypericum plants, namely chlorogenic acid, rutin, hyperoside, isoquercetine, quercitrine, and quercetine, may be implicated as part of an inducible plant defence response in two St. John’s-wortspecies, Hypericum perforatum L. and Hypericum triquetrifolium Turra. To achieve this objective, greenhouse-grown plantlets were inoculated with the fungal pathogen Diploceras hypericinum and the plant growth promoting bacterium Pseudonomas putida. Phenolic compounds levels of the Hypericum plantlets increased significantly in response to inoculation with both organisms. So far, little effort has been dedicated to investigate whether phenolic compounds are inducible by pathogen/herbivore attack or if they could play a role in plant defence. Results fr...
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Recent years has seen increasing interest in the genus Hypericum because it is the source of a variety of compounds and the biological activities of the genus are mainly derived from its hypericin content. The present study was conducted... more
Recent years has seen increasing interest in the genus Hypericum because it is the source of a variety of compounds and the biological activities of the genus are mainly derived from its hypericin content. The present study was conducted to determine whether this compound may be implicated as part of an inducible plant defense response in H. perforatum and H. pruinatum. Greenhouse-grown plants were inoculated with the plant pathogens Phytophthora capsici and Diploceras hypericinum. Hypericin levels of the Hypericum species increased significantly in response to inoculation with both pathogens. While up to now little effort has been made to determine whether hypericin is inducible by pathogen/herbivore attack or if it could play a role in plant defense, the present study indicates that hypericin is a component in inducible plant defense response of H. perforatum and H. pruinatum.
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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 Willd, Hypericum... more
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 Willd, Hypericum perfoliatum L. and Hypericum montbreii Spach. growing in Northern Turkey. Wild growing plants were harvested at vegetative, floral budding, full flowering, fresh fruiting, mature fruiting stages and dissected into stem, leaf and reproductive tissues. Actual phenolic content of plant materials was measured by high performance liquid chromato-graphy method. Multiple regression analysis with Excel 2003 computer package program was performed for each species and phenolic separately to develop the models. The produced equation for predicting of phenolic content in different tissues of the species was formulized as: PC= [a + (b1 × S) + (b2 × L) + (b3 × R) + (b4 × S 2) + (b5 × (1/RP))] where PC is whole plant content of phenolic compound, S is phenolic co...
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The present study was conducted to determine phenologic and morphogenetic variation of chlorogenic acid and flavonoids, as rutin, hyperoside, apigenin-7-O-glucoside, quercitrin, quercetin and viteksin content of Hypericum montbretii... more
The present study was conducted to determine phenologic and morphogenetic variation of chlorogenic acid and flavonoids, as rutin, hyperoside, apigenin-7-O-glucoside, quercitrin, quercetin and viteksin content of Hypericum montbretii growing in Turkey. Wild growing plants were harvested at vegetative, floral budding, full flowering, fresh fruiting and mature fruiting stages and dissected into stem, leaf and reproductive tissues and assayed for bioactive compounds by HPLC method. Accumulation of rutin and quercetin was not detected in plant parts of H. montbretii during plant growth. Chlorogenic acid and hyperoside content in whole plant was decreased linearly with advancing of development stages and reached their highest level at vegetative stage. On the contrary, apigenin-7-O-glucoside, quercitrin and viteksin content in whole plant increased during the course of seasonal development and the highest level of those compounds was observed at the stage of full flowering. Leaves did not produce apigenin-7-O-glucoside, while viteksin was not detectable in stem and reproductive tissues. Depending on development stages, reproductive parts had the highest level of apigenin-7-O-glucoside and leaves produced major amount of chlorogenic acid, hyperoside and viteksin whereas accumulation of quercitrin was prevailed in stem tissue. Such kind of data could be useful for elucidation of the chemotaxonomical significance of these compounds and medicinal evaluation of this species.
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Hypericum montbretii, a perennial herbaceous plant from Turkish flora has a great pharmaceutical potential with its well-documented chemical content. In the present study, morphogenetic and phenological variations of hyperforin were... more
Hypericum montbretii, a perennial herbaceous plant from Turkish flora has a great pharmaceutical potential with its well-documented chemical content. In the present study, morphogenetic and phenological variations of hyperforin were investigated in this species for the first time. Wild growing plants were harvested at vegetative, floral budding, full flowering, fresh fruiting, and mature fruiting stages and dissected into stem, leaf and reproductive tissues and assayed for hyperforin by HPLC method. Phenological changes in hyperforin content were found to be significant. After decreasing at floral budding slightly, hyperforin concentration in whole shoots increased with advancing of plant development and the highest level was reached at fresh fruiting. Among different parts of the plant, reproductive tissues namely green capsules and full opened flowers accumulated significantly higher amount of hyperforin when compared to stems and leaves. Such kind of data could be useful for elucidation of the chemotaxonomical significance of hyperforin and phytochemical evaluation of H. montbretii.
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ABSTRACT The presence of several phytochemicals, namely naphthodianthrones hypericin and pseudohypericin, phloroglucinol derivatives hyperforin and adhyperforin, the phenolic acids as chlorogenic acid, neochlorogenic acid, caffeic acid... more
ABSTRACT The presence of several phytochemicals, namely naphthodianthrones hypericin and pseudohypericin, phloroglucinol derivatives hyperforin and adhyperforin, the phenolic acids as chlorogenic acid, neochlorogenic acid, caffeic acid and 2,4-dihydroxybenzoic acid, the flavonols, hyperoside, isoquercitrin, quercitrin, quercetin, avicularin, rutin, and flavanols (+)-catechin and (-)-epicatechin, as well as biflavonoid amentoflavone was investigated in seven Turkish species of Hypericum from Taeniocarpium and Drosanthe sections. Plants were harvested at flowering, dried at room temperature, dissected into different tissues and assayed for chemical contents by HPLC. All chemicals were detected at various levels depending on species and plant parts. Despite the observed quantitative variation in the chemical content of plant material, it was found that phytochemical profiles of the species from the same section were very similar. The present data could be helpful in selecting the future targets for phytochemical and biological studies as well as enriching our current chemical knowledge about Hypericum species. Such kind of data could also be useful for elucidation of the chemotaxonomical relationships among the sections of Hypericum genus.
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Research Interests: Botany, Ethnobotany, Plant Biology, Biology, Medicine, and 15 moreSpatio Temporal Analysis, Flowers, High Pressure Liquid Chromatography, Pharmaceutical Biology, Plant extracts, Hypericum, Species Specificity, Flavonols, Perylene, Hypericin, Plant Leaves, Kaempferol, Hypericum perforatum, Rutin, and Pharmacology and pharmaceutical sciences
Research Interests: Botany, Chemistry, Principal Component Analysis, Plant Biology, Biology, and 15 morePhenology, Medicine, Essential Oil, Pharmaceutical, Cluster Analysis, Gas Chromatography, Pca, HYDROCARBONS, Pharmaceutical Biology, Plant extracts, Hypericum, Monoterpenes, Chemotype, Hypericum perforatum, and Pharmacology and pharmaceutical sciences
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... Ciineyt (~lrak r~, Jolita Radu~iene 2, Valdimaras Janulis 3, Liudas Ivanauskas 3, and Burhan Arslan 4 Faculb/of Agriculture, Department of Agronomy, University of Ondokuz Mayls, Kurupelit, Samsun, Turkey 2Institute of Botany, Zaliuju... more
... Ciineyt (~lrak r~, Jolita Radu~iene 2, Valdimaras Janulis 3, Liudas Ivanauskas 3, and Burhan Arslan 4 Faculb/of Agriculture, Department of Agronomy, University of Ondokuz Mayls, Kurupelit, Samsun, Turkey 2Institute of Botany, Zaliuju ezeru 49, Vilnius ... (~lrak C, Saglam B, Ayan ...
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Hypericum perforatum L. has become one of the leading plant-based dietary supplements worldwide and its biological activities have been mainly attributed to hypericin and phenolic contents. The present study was conducted to determine... more
Hypericum perforatum L. has become one of the leading plant-based dietary supplements worldwide and its biological activities have been mainly attributed to hypericin and phenolic contents. The present study was conducted to determine chemical and morphological variability of H. perforatum sampled from different locations of Northern Turkey. The populations were investigated according to the hypericin, chlorogenic acid and the flavonoids, namely rutin, hyperoside, apigenin-7-O-glucoside, quercitrin and quercetin contents and morphological characters including leaf dark gland density, leaf area, leaf length/width ratio and plant height. Significant chemical and morphological variations were detected among the populations. Hypericin content among populations ranged between 0.44 and 2.82 mg/g dry weight, chlorogenic acid between 0.0 and 1.86 mg/g dry weight, rutin between 0.0 and 8.77 mg/g dry weight, hyperoside between 5.41 and 22.28 mg/g dry weight, quercitrin between 1.64 and 3.98 mg/g dry weight and quercetin between 1.01 and 1.76 mg/g dry weight. Hypericin content was found to be correlated positively with leaf dark gland density, however, negatively with leaf area and no correlation was detected between the other morphological traits and bioactive substances examined.
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ABSTRACT Altitudinal changes in the content of hypericin, pseudohypericin, hyperforin, adhyperforin, chlorogenic acid, neochlorogenic acid, caffeic acid, 2,4-Dihydroxybenzoic acid, amentoflavone, hyperoside, isoquercitrin, quercitrin,... more
ABSTRACT Altitudinal changes in the content of hypericin, pseudohypericin, hyperforin, adhyperforin, chlorogenic acid, neochlorogenic acid, caffeic acid, 2,4-Dihydroxybenzoic acid, amentoflavone, hyperoside, isoquercitrin, quercitrin, quercetin, avicularin, rutin, (+)-catechin and (−)-epicatechin among Hypericum orientale L. and Hypericum pallens Banks and Sol. populations from Northern Turkey were investigated for the first time. Thirty flowering individuals were collected from five different altitudes (400, 950, 1,150, 1,620 and 2,150 m) for H. pallens and six different altitudes (500, 1,150, 1,650, 2,100, 2,720 and 3,250 m) for H. orientale. The plant materials were dried at room temperature and subsequently assayed for chemical contents by HPLC. All chemicals were detected in both species at various levels depending on altitude of growing sites except for caffeic acid which was absent in H. pallens. It was found that plants from higher altitudes produced significantly higher amount of the bioactive compounds tested. The results were discussed as a possible protective response of plants to the different abiotic stress factors as high ultraviolet (UV)-B radiation and low temperature which were prevalent in higher altitudes.
Research Interests: Botany, Plant Biology, Biology, Quercetin, Hypericum, and 4 moreHypericin, Chlorogenic Acid, Caffeic Acid, and Rutin
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In the present study, the presence of the phloroglucinol derivative hyperforin, the naphthodianthrones hypericin and pseudohypericin, the phenylpropane chlorogenic acid and the flavonoids rutin, hyperoside, kaempferol, isoquercetine,... more
In the present study, the presence of the phloroglucinol derivative hyperforin, the naphthodianthrones hypericin and pseudohypericin, the phenylpropane chlorogenic acid and the flavonoids rutin, hyperoside, kaempferol, isoquercetine, quercitrine, and quercetine was investigated inHypericum leptophyllumHochst., an endemic Turkish species for the first time. The aerial parts representing a total of 30 individuals were collected at full flowering and dissected into floral, leaf, and stem tissues. After being dried at room temperature, the plant materials were assayed for secondary metabolite concentrations by HPLC. Aerial plant parts accumulated chlorogenic acid, hyperoside, isoquercetine, quercitrine, and quercetine, but they did not accumulate hyperforin, hypericin, pseudohypericin, rutin, and kaempferol. Accumulation levels of the detected compounds varied with plant tissues. Such kind of data could be useful for elucidation of the chemotaxonomical significance of the corresponding ...
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The traditional widely used raw material of Achillea millefolium is currently mainly derived from wild populations, leading to diversification and uncertainty in its quality. The aim of the study was to determine the accumulation... more
The traditional widely used raw material of Achillea millefolium is currently mainly derived from wild populations, leading to diversification and uncertainty in its quality. The aim of the study was to determine the accumulation differences of phenolic compounds between geographically distant populations of Achillea millefolium from northern and southern gradients. Plant material was collected from Gaziantep and Nevşehir provinces in Turkey and from wild populations in Lithuania. A complex of nine hydroxycinnamic acids and eleven flavonoids was identified and quantified in the methanolic extracts of inflorescences, leaves, and stems using the HPLC-PDA method. Caffeoylquinic acids predominated in leaves, while inflorescences tended to prevail in flavonoids. The PCA score plot model represented the quantitative distribution pattern of phenolic compounds along a geographical gradient of populations. The content of phenolic compounds in plant materials from northern latitudes was more ...