Ulvi Zeybek

Ulvi Zeybek
Ege University · Department of Pharmaceutical Botany

About

30
Publications
3,363
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640
Citations
Introduction
Natural Drug sources as projects :a) Crataegus species distrubuted in anatolian flora :from a medicinal plant to natural drug. (completed in December 2020) b) The hepatotoxicity of some harmful plants in the medicinal plants fields: Some 1,2 unsaturated Pyrrolizidine alkaloids and their qualitative and quantitative analysis in medicinal plants of western Anatolia .(completed in November2020).

Publications

Publications (30)
Article
Full-text available
Pyrrolizidine alkaloids (PAs) are produced by plants as secondary compounds that are the most widely distributed natural toxins. There have been many cases of human toxicity caused by consumption of toxic plant species, as herbal teas and grain or grain products contaminated with PA-containing seeds have been reported. Companies that produce dried...
Chapter
Essential oils are terpenic compounds that accumulate in the special cells of organs such as leaves, flowers, fruits of scientifically accepted medicinal plants. As active substances, because of their antimicrobial effects, they are used in complementary medicine, such as in aromatherapy and phytotherapy. Essential oils, especially including monote...
Article
Full-text available
Nasturtium officinale L. has been used for a long time as a food and medicinal plant. Main therapeutic effects of this plant are due to rich essential nutrients as well as health-promoting plant secondary metabolites such as phenolics and glucosinolates. The plant was repoted to have antiviral, antiinflammatory, diuretic, expectorant, antidiabetic,...
Article
Objective: The human head louse Pediculus capitis has recently acquired resistance to commercially available insecticides, which has expanded the search concerning the pediculicidal activities of some herbal products. The present study aimed to assess the in vitro pediculicidal activities of volatile oils extracted from 10 medical plants raised in...
Article
Objective: This study aims at reviewing an evidence-based approach to medicinal plants for the supportive treatment of breast cancer. Material and Method: The subject databases for health sciences are considered for comprehensive search of the literature in terms of medicinal plants for the treatment of breast cancer. An electronic search for previ...
Article
Full-text available
Objective: Cancer is known as one of the main cause of death worldwide. It is difficult to discover novel agents that selectively kill tumor cells or inhibit their proliferation without general toxicity. Searching for more active, more selective and less toxic compounds are the main targets of cancer researches. Artemisia annua L. has been used for...
Article
Full-text available
Artemisia L. taxa (A. absinthium L., A. arborescens L., A. campestris L., A. scoparia Waldst. & Kit., A. santonicum L., and A. vulgaris L.) naturally distributed through western and southwestern Turkey were chosen as experimental materials in this study. Essential oils of the aerial parts of these Artemisia species were isolated by hydrodistillatio...
Article
Full-text available
Trichinellosis often causing diarrhea and more rarely fever, periorbital edema and myositis in human, is commonly treated with benzimidazole derivatives. The Artemisia genus has been found to be effective against a variety of parasites. In the present study, the efficacy against trichinellosis (Trichinella spiralis) of Artemisia vulgaris and Artemi...
Article
In this study, Posidonia oceanica (L.) Delile (Posidonia-ceae), which is a widely distributed phanerogam in Aegean and Mediterranean coasts, was investigated for the phenolic compounds that have the potential to be used in pharmaceutical sciences. The leaves, separated as young and mature leaves, were extracted and analyzed by high-performance liqu...
Article
plant materials are not known in some studies. The present study was carried out for the first time to determine the chemical composition of the essential oils of A. nobilis subsp. sipylea and A. nobilis subsp. neilreichii collected from Turkey, and their antimicrobial activities were tested against eight Gram positive and Gram negative bacteria st...
Article
Three natural products were isolated from three dierent Turkish lichens. Microbiological investiga- tions were also examined of these lichens. Compound 1 is known as 2-hydroxy-4-methoxy-3,6-dimethyl benzoic acid, and is isolated from Pseudevernia furfuracea for the rst time. Compounds 2 and 3 are de- tected as new compounds and called, 3-acetyl-4-a...
Article
The aim of the present study was to explore the probable antiinflammatory effect of Hypericum triquetrifolium Turra. in a rat model of carrageenan induced inflammation. Male Wistar rats were treated intraperitoneally with 0.4% dimethylsulphoxide (DMSO) (as control group) and H. triquetrifolium extract (25, 50, 60 mg/kg), 30 min before 0.1 ml 1% car...
Article
The composition and antimicrobial activity of essential oils obtained from Achillea millefolium L. subsp. pannonica (Scheele) Hayek, A millefolium L. subsp. millefolium, A. crithmifolia Waldst&Kitt. and A. kotschyi Boiss. subsp. kotschyi of Turkish flora were investigated. 1,8-cineole (43.3%) in A. millefolium L. subsp. pannonica, artemisia alcohol...
Article
The essential oil of Salvia tomentosa aerial parts, consisting of 1,8-cineol (17%), beta-caryophyllene (11%), cyclofenchene (10%) and delta-cadinene (6%), was screened for its antimicrobial activity. The essential oil remarkably inhibited the growth of tested Gram-positive and Gram-negative bacteria except for Pseudomonas aeruginosa.
Article
The secondary metabolites in Lobaria pulmonaria and L. scrobiculata collected in northeast Anatolia are studied using HPLC. Constictic, nortictic and stictic acids are the major components in L. pulmonaria; in addition connorstictic, cryptostictic, and menegazziaic acids are present as minor constituents. In L. scrobiculata constictic, stictic, and...
Article
Full-text available
The secondary metabolites in Lobaria pulmonaria and L. scrobiculata collected in northeast Anatolia are studied using HPLC. Constictic, nortictic and stictic acids are the major components in L. pulmonaria; in addition connorstictic, cryptostictic, and menegazziaic acids are present as minor constituents. In L. scrobiculata constictic, stictic, and...
Article
The aim of the present study was to investigate the antinociceptive activity of Hypericum triquetrifolium Turra. extract. The lyophilized extract was administered to male Swiss mice. Formalin paw test and tail flick tests were used for the evaluation of the antinociceptive activity. Plant extract (10, 25, 50 and 60 mg kg(-1), i.p.) (n = 16-24 for e...
Article
Full-text available
The lichens Haematomma nemetzii, a Ramalina species, and Tornabena scutellifera from Turkey have been analysed chemically. Nemetzon is a new anthraquinone from the apothecia of Haematomma nemetzii.
Article
Full-text available
Lichen samples collected before and after the Chernobyl accident were analysed for radiocesium activity. Cs activity was detected in some samples collected before Chernobyl. Cs and Cs were detected in all the samples after the accident. The levels of the total cesium activity counted in the samples proved that the eastern region of the Black Sea wa...
Article
Bu çalişmada Türkiye'nin 7 farkli lokalitesinden toplanan Achillea setacea çiçeklerinden hidrodistilasyonla elde edilen uçucu yağlarin GC ve GC/MS analizleri sonucu ana bileşenleri saptanmiş, bu uçucu yağlarin invitro antimikrobiyal aktiviteleri incelenmiştir. Edirne, Tekirdağ, Niğde, Kirşehir, Kirklareli ve Burdur'dan toplanmiş olan A.setacea uçuc...

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