Yazar "Seyis, Fatih" için listeleme
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Altitudinal changes in secondary metabolite contents of Hypericum androsaemum and Hypericum polyphyllum
Çırak, Cüneyt; 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, ... -
Annual variation of the Orosanga japonica Melichar 1898 (Hemiptera: Ricaniidae) populations in the eastern Black Sea region of Turkey and possible molecular separation with based on 28S rDNA sequences from other Ricaniidae groups
Akıner, M. Mustafa; Berıs, Fatih S.; Seyis, Fatih; Öztürk, Murat; Sevgili, Hasan; Demir, Emine (2019)Orosanga japonica (Melichar, 1898) is one of the invasive species that are distributed in the eastern Black Sea coastal zone. The aim of the study was to determine the annual variation of the populations and solve the ... -
Antimicrobial and antioxidant activity of the essential oil of the Turkish endemic species Achillea Phrygia Boiss. & Bal.
Akçin, Adnan; Akçin, Tülay Aytaş; Seyis, Fatih; Çoban, Ahmet Yılmaz; Durupınar, Belma (Taylor & Francis Ltd, 2014)The essential oil obtained from the dried flowering aerial parts of Achillea phrygia Boiss & Bal. by hydrodistilation was analysed by gas chromotography-mass spectrometry. Camphor (35.55 %), 2-furaldehyde (16.59 %) and ... -
Chemical and morphological diversity among wild populations of Hypericum aviculariifolium Jaub. et Spach subsp. depilatum ( Freyn et Bornm.) N. Robson var. depilatum
Çırak, Cüneyt; Özcan, Aysel; Yurteri, Emine; Kurt, Dursun; Seyis, Fatih (Univ Zagreb, Fac Science, Div Biology, 2020)In this study, the chemical and morphological diversity among eleven wild populations of Hypericum avicularlifolium Jaub. et Spach subsp. depilatum (Freyn et Bornm.) N. Robson var. depilatum, an endemic Turkish species was ... -
Chemical composition and antimicrobial activity of the essential oil of endemic heracleum platytaenium boiss. from Turkey
Akcin, Adnan; Seyis, Fatih; Akcin, Tülay Aytaş; Çaycı, Yeliz Tanrıverdi; Çoban, Ahmet Yılmaz (Taylor & Francis Ltd, 2013)The compositions of the essential oil of Heracleum platytaenium Boiss. aerial parts, grown in Turkey were determined by GC-MS. Twenty-two compounds (95.24 %) were determined. the major compounds in the oil were found to ... -
Determination of the chemical composition in different plant parts of S. Mollis taxa
Yurteri, Emine; Makbul, Serdar; Gültepe, Mutlu; Seyis, Fatih (Babes-Bolyai University, 2023)The volatile oil composition and secondary metabolite content in different parts of S. mollis ssp. mollis and S. mollis ssp. szowitzii were investigated in this study. Based on their chemical composition, the components ... -
Distribution of phenolic compounds and antioxidant activity in plant parts and populations of seven underutilized wild achillea species
Raudone, Lina; Radusiene, Jolita; Seyis, Fatih; Yayla, Fatih; Vilkickyte, Gabriele; Marksa, Mindaugas; Ivanauskas, Liudas; Çırak, Cüneyt (MDPI, 2022)Evaluation of phytochemical composition of underutilized Achillea species provides the primary selection of germplasms with the desired quality of raw material for their further applications. The aim of the study was to ... -
Effects of Organic Fertilizer and Drying Methods on Total Phenolic Content and Antioxidant Capacity of Organic White Tea (Camellia sinensis (L.) Kuntze)
Yurteri, Emine; Özcan, Aysel; Seyis, Fatih (2019)The aim of this study was to determine the effect of different fertilizer doses and drying methods on total phenolic contents and antioxidant activity of organic white tea (Camellia sinensis (L.) Kuntze) obtained from ... -
Effects of stratification and moisturizing treatments on breaking seed dormancy in two echinacea species
Yurteri, Emine; Aykutlu, Aysel Özcan; Küplemez, Haydar; Seyis, Fatih (Parlar Scientific Publications, 2021)Echinacea (Echinacea ssp.) has been widely used in folk medicine for centuries and has a high market share and medicinal value, because more than 280 different products are sold economically in Europe. Generally, germination ... -
Effects of Thidiazuran and Zeatin on plant regeneration in Helichrysum Pallasii
Yurteri, Emine; Aksu, Merve; Küplemez, Haydar; Özcan, Aysel; Seyis, Fatih (Bolu Abant Izzet Baysal University, 2021)The genus of Helichrysum comprises many species which have therapeutical effects and used in folk medicine. H. pallasii is one of these species, used in the region for traditional medicine and ornamental purposes. ... -
Evaluation of the chemical composition in different plant parts of Scorzonera Papposa
Yurteri, Emine; Makbul, Serdar; Coşkunçelebi, Kamil; Gültepe, Mutlu; Seyis, Fatih (Parlar Scientific Publications, 2022)Scorzonera papposa, a member of the Scorzonera genus, is not investigated deeply regarding its volatile oil composition and seconder metabolite content in Turkey. In our study we were able to distinguish Scorzonera papposa ... -
Hypericum origanifolium Willd.: the essential oil composition of a new valuable species
Bertoli, Alessandra; Çırak, Cüneyt; Seyis, Fatih (Elsevier, 2015)Turkish Hypericum origanifolium Willd has been recently considered for its hypericin and phenolic content as a potential substitute of the well-established EU market position Hypericum perforatum. However, a complete ... -
Hypericum spp. volatile profiling and the potential significance in the quality control of new valuable raw material
Bertoli, Alessandra; Çırak, Cüneyt; Seyis, Fatih (Elsevier, 2018)The genus Hypericum (Guttiferae) is one of the most representative species in temperate zones and Turkey is one of the most important Mediterranean sites. Due to the increasing commercial value of Hyperici herba (Hypericum ... -
Kudret Narında (Momordica charantia L.) Budama ve Tepe Almanın Gövde Üzerinde Tutan Meyvelerde Verim ve Meyve Özellikleri Üzerine Etkisi
Bu araştırma, kudretnarı bitkisinde yetiştirme tekniği olarak uygulanan budama (kontrol, 0 dal, 2 dal ve 4 dal bırakma) ve tepe alma (kontrol ve tepe alma) uygulamalarının, bitkinin gövdesi üzerinde tutan meyvelerin ... -
Morphogenetic and phenological changes in phenolic content of Hypericum leptophyllum, an endemic Turkish species
Seyis, Fatih; Radusiene, Jolita; Ivanauskas, Liudas; Jakstas, Valdas; Çırak, Cüneyt (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 ... -
Organik Çay Tarımında Budama Yaşı ve Diurnal Varyabilitenin Çay (Camellia sinensis (L.) O. Kuntz) Yapraklarının Antioksidan Aktivitesi Üzerine Etkisi
Bu çalışma, 2016 yılında Rize İl’inde organik çay tarımı yapılan bir araziden toplanan taze yaprak örnekleri üzerinden yürütülmüştür. Araştırmada, budama yaşının (en son budamadan sonraki 1. yıl, 3. yıl ve 5. yıl) ve diurnal ... -
Phenolic compounds and antioxidant activity of Achillea arabica populations
Çırak, Cüneyt; Radusiene, Jolita; Raudone, Lina; Vilkickyte, Gabriele; (Seyis, Fatih; Marksa, Mindaugas; Ivanauskas, Liudas; Yayla, Fatih (Elsevier, 2022)In this study, we aimed to present the screening of the contents of phenolics including caffeoylquinic acid derivatives, quercetin, luteolin, apigenin and some their derivatives as well as santin and total antioxidant ... -
Phenolic constituents of six Hypericum species from Türkiye and their chemotaxonomic relevance
Çırak, Cüneyt; Seyis, Fatih (Elsevier, 2023)Hypericum species have been of great interest to mankind for centuries and Türkiye is a global intersection for these species. In the present study, 20 wild populations of six under-exploited species of Turkish Hypericum ... -
Secondary metabolites of hypericum species from the drosanthe and olympia sections
Çırak, Cüneyt; Radusiene, Jolita; Jakstas, Valdas; Ivanauskas, Liudas; Yayla, Fatih; Seyis, Fatih; Çamaş, Necdet (Elsevier, 2016)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 ... -
Secondary metabolites of seven Hypericum species growing in Turkey
Çırak, Cüneyt; Radusiene, Jolita; Jakstas, Valdas; Ivanauskas, Liudas; Seyis, Fatih; Yayla, Fatih (Taylor & Francis Ltd, 2016)Context the genus Hypericum (Hypericaceae) has attracted remarkable scientific interest as its members have yielded many bioactive compounds. Objective the current study presents investigations on the accumulation of ...
