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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 ... -
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 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. ... -
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 ... -
Variation of antioxidant activity and total phenolic content of tea (Camellia sinensis L. O. Kuntze) genotypes
Şavşatlı, Yusuf; Özcan, Aysel; Civelekoğlu, Oğuzhan (Kahramanmaras Sutcu Imam University, 2021)This study was carried out to determine tea (Camellia sinensis L. O. Kuntze) genotypes with high antioxidant activity and also high total phenolic content (TPC) in Rize/Turkey conditions in 2017. In the research, the seeds ... -
Volatile secondary metabolites of Hypericum tetrapterum and Hypericum bithynicum
Seyis, Fatih; Yurteri, Emine; Özcan, Aysel; Çırak, Cüneyt; Yayla, Fatih (Elsevier, 2022)The phytochemical analyses on the flowering aerial parts resulted in identification of 32 and 30 compounds which represent 100% of total volatile components in Hypericum tetrapterum and Hypericum bithynicum (Hypericaceae), ...
