Atalay Sokmen

Konya Food and Agriculture University | KGTÜ · Plant Production Technology

Essential oils (EOs) have recently attracted more interest due to their insecticidal activities, low harmfulness, and rapid degradation in the environment. Therefore, Lavandula steochas (L. steochas) essential oil was assessed for its chemical constituents, in vitro cytotoxicity, and scolicidal, acaricidal, and insecticidal activities. Using spectr...

Bitki doku kültürü teknikleri, son zamanlarda, nadir ve nesli tükenmekte olan türlerin çoğaltılması ve ekonomik açıdan önemli doğal ürünlerinin üretilmesi için ilgi çekici araçlar haline gelmiştir. Bu çalışmada, Türkiye'de doğal olarak yetişen yerli bir sahleb orkidesi türü olan Orchis sancta L.’nın fide ve yumrularının in vitro koşullarda etkin, h...

Ticks are of great economic importance worldwide, both because they represent major obstacles to livestock productivity and because of their ability to transmit diseases to humans and animals. Although synthetic acaricides are the most common method for tick control, their overuse has led to the development of resistance as well as unacceptable res...

Globally, the economic losses due to hard ticks infestation and the control of the associated diseases have been calculated at USD $13.9–18.7 billion per year. The economic impact is related to its direct damage to the skins, blood loss, anemia, severe immunological reactions and indirect losses that related to the effects of hemoparasites, cost of...

The present study was designed to evaluate the insecticidal activity of different concentrations of Foeniculum vulgare and two of its components, trans‐anethole and fenchone, against the different stages of Musca domestica. The tested concentrations were applied through a residual film method and topical application on larvae and pupae respectively...

Objective Origanum minutiflorum essential oil were evaluated for its chemical components, in vitro antioxidant, scolicidal and anticancer activities. Methods Oil was extracted and its components were identified with spectrometry and flame ionisation gas chromatography. The oil antioxidant acivity was evaluted by DPPH radical scavenging and β-Carot...

A rapid micropropagation protocol was designed to produce Calamintha sylvatica plantlets by using nodal segments as explants for the shoot formation. 6-BA favored the highest shoot formation and biomass yield, whilst kinetin was found superior for the highest shoot length (38.97 ± 2.85 mm) and node numbers (2.89 ± 0.63). Rosmarinic acid was detecte...

This study was designed to investigate colchicine extraction from Colchicum speciosum L. using traditional and supercritical fluid extraction (SFE). The aim of this study was to i) optimize a new economical conventional liquid phase extraction procedure ii) optimize a supercritical fluid extraction (SFE) method to obtain a colchicine rich extract f...

Fruits and leaves of Vaccinium species have rich bioactive phytochemicals. These bioactive phytochemicals make these plants particularly valuable for the medical and food industry. This novel approach was designed to determine the phenolic content of Vaccinium species obtained from both micropropagated and naturally growing leaves. An efficient mic...

An efficient in vitro multiplication protocol was designed to Thymus leucotrichus, a subshrub and perennial herb growing naturally in the Northwest of Turkey. Of all basal media studied, Murashige and Skoog medium was found to be superior to the others, providing higher shoot formation and the maximum shoot length. Varying concentrations of cytokin...

The aim of this study was to investigate the effect of plant growth regulators, phenylalanine, tyrosine, N-acetylcysteine (NAC), and sucrose on micropropagation of Thymus leucotrichus Hal. Rosmarinic acid content, as well as essential oil profiles of all propagated plantlets, were also analyzed. Kinetin (0.1 mg/L) was found to be very effective in...

This novel approach was designed to increase the production capacity of Vaccinium uliginosum L. via direct organogenesis. Lateral buds containing one or two leaves were initially cultured in McCown woody plant medium (WPM), Anderson’s rhododendron medium, and Murashige and Skoog basal media, each supplemented with zeatin/indole-3-butyric acid (IBA)...

Vaccinium myrtillus L. (Bilberry), a member of the family Ericaceae, is economically the most important wild berry growing in the Turkish flora. This study was determined to the effect of activated charcoal on rooting V. myrtillus microshoots growing in the culture conditions. WPM containing 2% sucrose and 0.8% agar was used as a basal medium for r...

The purpose of this study was determined micropropagation of Eruca sativa Mill. is an edible annual plant, commonly known as " salad rocket ". In order to specify the most effective basal medium, two basal media, Murashige and Skoog (MS) and Gamborg B5 medium (B5) each supplemented with 1.0 mg/L 6-benzylaminopurine (6-BA) and without plant growth r...

Aim of the study: The aim of this study was to examine the effect of different concentrations of sucrose on growth and rosmarinic acid accumulations in vitro grown Thymus leucotrichus Hal. Material and Methods: Four different groups were obtained by changing the sucrose concentrations of the MS medium which include 2 mg/L 2ip and 0.1 mg/L NAA. Cult...

An efficient micropropagation protocol was developed to produce Stachys annua plantlets and the extracts obtained from both micropropagated and naturally growing individuals were evaluated for their possible antimicrobial, antioxidant and cytotoxic activities. Mean number of shoot (4.5 ± 0.54 per explant) and node number (4.56 ± 0.5 per explant) as...

Thymus pseudopulegioides plantlets were propagated in vitro via direct organogenesis by using Murashige and Skoog (MS) media containing kinetin, thidiazuron, and 6-benzyladenine (BA) individually. Methanol extracts obtained both from plantlets and wild plants were analyzed for their total phenolics and flavonoid contents, then quantified by HPLC. T...

Medium pH is one of the crucial factors affecting plant cell culture, and generally very little attention has been given to the control of it. The present study was designed to monitor the effects of pH changes on the course of shoot regeneration of Vaccinium arctostaphylos L., Vaccinium myrtillus L. and Vaccinium uliginosum L. Shoot regeneration w...

Orchids are considered recalcitrant plants in in vitro propagation. Due to the lack of appropriate micropropagation techniques for mass production and damage to their ecological distribution posed by local gatherers, these species are threatened with extinction, including Serapias vomeracea (Burm.f.) Briq. In this research, we put forward a complet...

This study is designed to determine the in vitro antioxidant, antimicrobial and antiviral activities of hexane, chloroform, water extracts and essential oils of Thymus nummularis M. Bieb. Chemical composition of essential oil was determined by employing GC-MS and GC-FID analyses; thymol being the main component in 58%. The oil and extracts were scr...

Hexane, chloroform, water extracts and essential oil obtained from flowering aerial parts of Thymus transcaucasicus Ronniger were screened for potential in vitro antioxidant, antimicrobial and antiviral activities. Chemical composition of essential oil was determined by employing GC-MS analysis; thymol being the main component in 55%. The essential...

In this study, hexane, chloroform and water extracts were prepared by making consecutive extraction of Achillea biserrata from the family Asteraceae. Volatile oil of the same types was obtained by water distillation that was continued 4 hours in the Clevenger fixture and dried by adding anhydrous sodium sulfate. After GS/MS analysis, volatile oil o...

Abstract: This study was designed to micropropagate Vaccinium myrtillus L., a naturally growing bilberry, in the Turkish flora. In order to determine the most effective basal medium, lateral buds were initially selected as explants, which were then individually cultured in Murashige and Skoog medium, Anderson’s rhododendron medium, and McCown’s woo...

Phytochemicals have long been touted as alternatives to synthetic chemicals for pest control and especially interest has grown for the search of antifeedants effects over the last decades. Similarly, we tested antifeedant activity of essential oils obtained from four different Lamiaceae species; Thymus transcaucasicus RONNIGER, Thymus pseudopulegio...

This study was designed to determine the antioxidant potentials of various extracts and the essential oil obtained from the leaves of Hyssopus officinalis L. ssp. angustifolius (Lamiaceae). The hexane, chloroform and water extracts were prepared by using an automated extraction system while essential oil was obtained from water-distilation by using...

Some species belonging to the genus Orchis Tourn. ex L. (Orchidaceae) are of great economic importance as their tubers or corms are used to produce a hot beverage called salep. Nevertheless, these plants are not cultivated but are rather collected from nature, and due to careless collection many have already been listed as endangered plants. In ord...

The aim of this study was to determine the most suitable growth medium for rapid and efficient micropropagation of Vaccinium arctostaphylos L. (Ericaceae) via lateral-bud cultures. According to preliminary studies, the best explant collection time was late April and May. Accordingly, cuttings were taken from naturally growing V. arctostaphylos popu...

Crataegus fruit is one of most important fruits in Tunisian flora. Some fruits of this genus are edible. This study was undertaken in order to examine the benefits of these fruits in human health and their composition of antioxidants including total polyphenol, flavonoids, proanthocyanidins content, and total anthocyanins. The antioxidative propert...

A novel phthalocyanine bearing oxygen donor atoms on the peripheral positions has been synthesised by cyclotetramerisation of (E)-4-(4-cinnamoylphenoxy)phthalonitrile and its nickel, zinc, cobalt, copper and lead derivatives prepared. The thermal stabilities of the phthalocyanine compounds have been determined and their possible biological activiti...

Amaç: Bu çalismada, yumrularindan salep hammaddesi elde edilen ve nesli tükenme tehlikesiyle karsi karsiya olan Drehis anatolica türünün in vitro çimlendirilmesi ve bitkiciklerinin olusturulmasi amaçlanmistir. Gereçler ve Yöntemler: Baslangiç eksplanti olarak O. anatolica türüne ait olgun tohumlar kullanildi. Tohumlarin sterilizasyon öncesi ve sonr...

This study was designed to evaluate the in vitro antioxidant activities of hexane, dichloromethane and methanol extracts of Salvia verticillata ssp. verticillata and spp. amasiaca. The samples were subjected to screening for their possible antioxidant activity by using 2,2- diphenyl-1-picriylhydrazyl (DPPH) and β-carotene/linoleic acid assays. The...

This study was designed to evaluate the in vitro antioxidant activities of n-hexane (Hex), dichloromethane (DCM), methanol (MeOH) and essential oils (EO) extracts obtained from Salvia euphratica var. euphratica and Salvia euphratica var. leiocalycina and to determine their essential oil and phenolic acid compositions. The samples were screened for...

This work reports on a new symmetrically substituted metal-free phthalocyanine and its transition metal complexes which were prepared by a condensation of N,N′-[propan-1,3-diilbis(tiyoetan-2,1-diil)]bis(4-methylbenzenesulfonamid) (1) and 1,2-bis (2-iodomercaptoethyl)-4,5-dicyanobenzene (2) with NiCl2, ZnCl2, CoCl2, CuCl2,and PbO salts in 2-(dimethy...

A high-frequency in vitro regeneration of Digitalis davisiana Heywood (Alanya foxglove) and cardiotonic glycoside production from both in vitro produced materials (regenerated plantlets or germinated seedlings) and leaves of natural populations were obtained. Cardiac glycosides regulate heart rhythm and are effective in cancer chemotherapy, in part...

In this study, two varıety of crateagus azarolus and crateagus oxyantha were compared with respect to their antioxidant potential, total phenolic content, total flavonoid content, and antioxidant capacity tests such 1,1- diphenyl-2- picrylhydrazil (DPPH)and β-Carotene–linoleic acid assay. Total catechins and total epicatechin contents were also ana...

In the present study, toxic effects of BPA and TBBPA on chickpea seed germination and some possible biochemical changes in the roots were determined. The seed germination did not significantly change in 10 and 50 mg/L BPA and TBBPA applications. However, seed germination was inhibited by 100 mg/L concentration of both treatments. Similarly, chickpe...

The aim of this study was to investigate wound healing effects of Arnebia densiflora (Nordm.) Ledeb. root extracts on rat palatal mucosa. A 10-mm full-thickness mucosal wounds were created on midline of rats' palate by using scalpel. In the experimental groups, a ten percent extract of A. densiflora roots was topically applied once a day as ointmen...

In this study, antioxidant activities of four wild type Astragalus species namely, A. microcephalus, A. lagurus, A. macrocephalus and A. galegiformis have been investigated. Plant samples were collected from Erzurum (1700-2400 m, May 2006). Dried samples were extracted with methanol in a soxholet extractor (3 h) and antioxidant activities were test...

Catnip (Nepeta cataria) is an important medicinal herb belonging to the mint family, Lamiaceae. In this study, the in vitro antimicrobial and antioxidant activities of the essential oil and methanol extract from Nepeta cataria, and its essential oil composition were investigated. The essential oil, which has 4aalpha,7alpha,7abeta-nepetalactone (70....

The present study evaluated the in vitro antimicrobial, antioxidant, and antiviral activities of the essential oil and various extracts of Salvia limbata C.A.Mey. and Salvia sclarea L., as well as the content of its essential oil. The activities of essential oils were tested against a wide range of human-, plant-, and food-borne microorganisms. A t...

The present study is related to evaluate antimicrobial and antioxidant activities of hexane and methanol extracts of four endemic Astragalus species grown in the vicinity of Erzurum, located in the eastern Anatolia, Turkey. Methanol extract of Astragalus species exhibited better free radical scavenging activity providing 50 % inhibition at the conc...

The present study evaluated the in vitro antimicrobial, antioxidant, and antiviral activities of the essential oil and various extracts of Salvia limbata C.A.Mey. and Salvia sclarea L., as well as the content of its essential oil. The activities of essential oils were tested against a wide range of human-, plant-, and food-borne microorganisms. A t...

This study was designed to examine the chemical composition and in vitro antioxidant activity of the essential oil and various extracts (hexane, dichloromethane and methanol sub-fractions) of Nepeta flavida. GC and GC–MS analyses of the essential oil resulted in the identification of 68 compounds, representing 96.4% of the oil; 1,8-cineole (38.9%)...

This study was designed to evaluate antimicrobial and antioxidant activities of the essential oil and methanol extract from Mentha longifolia ssp. longifolia. The essential oil showed strong antimicrobial activity against all 30 microorganisms tested whereas the methanol extract almost remained inactive. In contrast, the extract showed much better...

This study was designed to examine the in vitro antioxidant activities of the essential oil and methanol extracts of Satureja spicigera and S. cuneifolia from Turkish flora. GC and GC/MS analysis of the essential oils resulted in the identification of 40 and 29 compounds, representing the 99.4% and 99.5% of the oils, respectively. Major constituent...

This study was designed to examine the chemical composition and in vitro antioxidant activity of the essential oil of Clinopodium vulgare. GC–MS analysis of the oil resulted in the identification of 40 compounds, representing 99.4% of the oil; thymol (38.9%), γ-terpinene (29.6%) and p-cymene (9.1%) were the main components. The samples were subject...

The present work examines the in vitro antioxidant properties of the essential oil and various extracts prepared from the herbal parts of Ferula orientalis A. (Apiaceae). The highest 2,2-diphenyl-l-picrylhydrazyl (DPPH) radical-scavenging activity was found in the polar extract, e.g. methanol–water (1:1), obtained from non-deodorised materials with...

In this study, production and optimisation of rosmarinic acid, a phenolic acid and an economically important metabolite, was investigated in the callus cultures established from the mature seeds of Satureja hortensis L. (summer savory) plant. Gamborg's B5 basal medium, supplemented with indol butyric acid (IBA) (1.00 mg L(-1)), N6-benzyl aminopurin...

Methanolic extracts of three different Tanacetum subspecies [Tanacetum densum (Lab.) Schultz Bip. subsp. sivasicum Hub-Mor and Grierson, Tanacetum densum (Lab.) Schultz Bip. subsp. eginense Heywood and Tanacetum densum (Lab.) Schultz Bip. subsp. amani Heywood] which are endemic to Turkish flora were screened for their possible antioxidant activitie...

Hippomarathrum microcarpum grows wild in eastern Anatolia, Turkey, and is a plant utilized as food by people. In this study, the in vitro antimicrobial and antioxidant activities of the essential oil and methanol extract from H. microcarpum and its essential oil composition were investigated. The essential oil, which has bornyl acetate, caryophylle...

Garlic (Allium sativum L.) has been used in the public health in some of treatments for years. The most important chemical compounds of garlic are sulphide (alisin, ajoen and diallysulphure) compounds. Allisin is described as antibacterial, antifungal, antiparasitic and anticarsinogenic agent and many works practice on it. But its antiscolocidal ef...

Five extracts from five plants, of which four are endemic to Turkish flora, were screened for their possible in vitro antioxidant activities by two complementary test systems, namely DPPH free radical-scavenging and β-carotene/linoleic acid. In the first case, Pelargonium endlicherianum extract exerted greater antioxidant activity than those of oth...

The aerial parts of two endemic Pimpinella [Pimpinella anisetum Boiss. & Ball. and Pimpinella flabellifolia (Boiss.) Benth. ex Drude] were hydro-distilled to produce oils in the yields of 2.07% (v/w) and 2.61% (v/w), respectively. The oils were analysed by GC and GC/MS. Twenty-one and nineteen components were identified, representing 99.5% and 99.7...

The Eastern Black Sea Region has an extensive flora because of ample rainfall lasting all year. In this study, antimicrobial effects of 74 crude extracts of 22 endemic plants were investigated. Among the 30 active crude extracts, water-insoluble crude extracts from Betula medwediewii, Heracleum platytaenium, Primula longipes, Anthemis cretica ssp....

The aim of this study is to investigate in vitro antimicrobial and antioxidant activities of the methanol extracts of Parmelia saxatilis (L) Ach., Platismatia glauca (L.) W.L. Club. & C.F. Culb., Ramalina pollinaria (Wesstr.) Ach., Ramalina polymorpha (Liljeblad) Ach. and Umbilicaria nylanderiana (Zahlbr.) H. Magn. Antioxidant activity was evaluate...

This study was designed to examine the in vitro antioxidant activities of the methanol extracts of six Salvia species [Salvia caespitosa Montbret & Aucher ex Bentham (ENDEMIC), Salvia hypargeia Fisch. & Mey. (ENDEMIC), Salvia euphratica subsp. euphratica Montbret & Aucher ex Bentham (ENDEMIC), Salvia sclarea L., Salvia candidissima subsp. candidiss...