Browsing by Author "Okut, Nese"

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Chemical Composition of Essential Oil of Mentha Longifolia L. Subsp Longifolia Growing Wild
(Pakistan Botanical Soc, 2017) Okut, Nese; Yagmur, Mehmet; Selcuk, Nilufer; Yildirim, Bunyamin
The essential oil of Mentha longifolia L., is very important to some culinary usage and antimicrobial activity. The essential oil of Mentha longifolia subsp. longifolia growing in the Bahesaray area (Van Province, Turkey) was studied. This study designed for determine of essential oil constituent Mentha longifolia subsp. longifolia that collected from wild area. Mint leaves sample essential oils obtained by hydro distillation and essential oil components were determined using GC-MS. The main component of wild grown Mentha longifolia subsp. longifolia was Menthone (19.31%). Second one and others were Pulegone (12.42%), Piperitone (11.05%), Dihydrocarvon (8.32%), Limonene (6.1%), 3-Terpinolenone (5.66%), 1,8-Cineole (4.37%), Germacrene D (3.38%) and Caryopyllene (3.19%), respectively.
Chemical Diversity of Essential Oil From Leaves of Ziziphora Clinopodioides Growing in Van, Turkey
(Parlar Scientific Publications (p S P), 2018) Okut, Nese; Selcuk, Nilufer; Yagmur, Mehmet; Yildirim, Bunyamin
Blue Mint Bush (Ziziphora clinopodioides) belongs to the family Lamiaceae and grows in Iran, Iraq, Central and Eastern part of Turkey. The leaves of Ziziphora clinopodioides L. samples were collected on the beginning of July (2010) from Kocko-pru area (Van Province, Turkey) at an altitude of 1924 m and described accordingly. Hydrodistillation was used to isolate the essential oil of the plant and then 33 constituents were identified by using GC-MS. The majority presented compounds of the essential oil were Pulegone (29.31%), Menthone (21.79%), 1,8-Cineole (15.31%), beta-Pinene (8.74%), Limonene (3.91%), alpha-Pinene (3.17%), 3-Terpinolenone (3.09%), beta-Phellandrene (2.88%), respectively. Menthofurane, Isopulegone and Germacrene D are represented by low concentrations. A cluster analysis was carried on the essential oil composition of Z. clinopodioides to identify homogenous groups.
A Comparison of the Responses of Five Potato Cultivars To Chloride Stress From Either Sodium Chloride or Calcium Chloride
(Parlar Scientific Publications (p S P), 2019) Okut, Nese; Vega-Semorile, Sandra; Navarro, Felix; Palta, Jiwan P.
Field trials were performed using the five following cultivars; Dark Red Norland, Russet Burbank, Superior, and Snowden. Randomized complete design with four replication swere conducted. Chloride salt treatments were given to plants twice after 7 and I 1 weeks of planting. The rate applied was about 100 kg per hectare from NaCI, CaCl2 or a combination of 50% NaCl and CaCl2. About 70 A grade tubers from each replicationwere cut and examined for internal defects after harvesting. The tissue calcium concentration of periderm and nonperiderm were then measured. From each replication, a composite sample of 20 tubers were combined for Ca analysis. Our results showed: (i) NaCl stress reduced tuber yield in all of the cultivars. This reduction was not as dramatic in the cultivar Superior. (ii) NaCl also reduced specific gravity by about 5% as well as tuber tissue calcium concentrations of cultivars. (iii) Same amount of chloride supplied from calcium chloride as a source increased tuber tissue calcium concentrations in all cultivars. However, there was no negative impact on either specific gravity or tuber yield. Results support our previous studies indicating that the negative impact of chloride on potato cultivars is only presented when NaCl is used as the source of chloride.
Effects of Salicylic Acid on the Growth and Some Physiological Characters in Salt Stressed Wheat (Triticum Aestivum L.)
(Ankara Univ, Fac Agr, 2007) Kaydan, Digdem; Yagmur, Mehmet; Okut, Nese
This study was conducted to determine the effects of seed soaking in salicylic acid (10(-2) mol/L, 10(-4) mol/L, 10(-6) mol/L and control) on the growth and some physiological characters in wheat (Triticum aestivum L.) under salinity (8 ds m(-1)) and non salinity conditions. NaCl reduced the emergence percentage, the growth parameters (shoot and root dry weight), K+/Na+ ratio, osmotic potential and photosynthetic pigments (Chl a, b and carotenoids) contents in wheat seedlings. The emergence percentage was not changed, in contrast, shoot and root dry weight of seedlings, K+/Na+ ratio, photosynthetic pigments (Chl a, b and carotenoids) contents and osmotic potential were increased by salicylic acid treatments under non salinity condition. Seed soaking in SA increased the emergence percentage, osmotic potential, shoot and root dry weight, K+/Na+ ratio, photosynthetic pigments (Chl a, b and carotenoids) contents in the salinity stressed wheat seedlings. These results were indicated that SA has positive effects on plant growth in salinity and non salinity conditions. But the effects of SA was higher on emergenge percentage, K+/Na+ ratio and osmotic potantial in salinity condition compared to non salinity condition was obtained in this study.
Evaluation of Chemical Composition and Antimicrobial Activity of Vitex Agnus Castus L. Fruits' Essential Oils From West Anatolia, Turkey
(Taylor & Francis Ltd, 2015) Eryigit, Tamer; Cig, Arzu; Okut, Nese; Yildirim, Bunyamin; Ekici, Kamil
This study deals with the chemical composition and antimicrobial activity of essential oils of Vitex agnus castus L. The main constituents of the essential oils were characterized by GC-MS which resulted in the identification of 26 components, representing 100 % of the oil. The dominant compounds in the oil of fruits were trans-caryophyllene (19.17 %), sabinene (18.05 %) and 1,8-cineole (16.13 %), alpha-terpinyl acetate (6.91 %) and dihydroselarene (6.73 %). Antimicrobial activity was tested using the disc diffusion method. According to the inhibition zones, the essential oils were active against all of the tested microorganisms. The essential oils showed the susceptible inhibition zones, but they were less effective against bacterial strains compared to ampicillin and ofloxacin. The organisms most susceptible to these essential oils were Enterococcus faecalis ATCC 29212. However, further studies must be performed to confirm the safety of these oils for use as an antimicrobial agent.
Van İlinden Seçilmiş Bazı Tıbbi Bitkilerin Ağır Metal İçerikleri
(2019) Okut, Nese
Tedavi amacıyla çay olarak geniş bir kullanımı olan 9 bitki türü Van (Türkiye)'den seçilerek Al, Fe, Mn, Zn, Ni, As, Cd, Pb, Cr, Cu, Co ve Sr seviyeleri belirlenmiştir. Araştırmada kullanılan bitkiler: Sarı kantaron (Hypericum ssp.), civan perçemi (Achillea ssp.), hatmi (Alcea ssp), adaçayı (Salvia ssp.) ısırgan otu (Urtica ssp.), kekik (Thymus ssp), acı cehre (Frangula alnus), papatya (Matricaria ssp.) ve uçkun (Rheum ribes)'dur. Toplam olarak farklı kısımları kullanılan 34 örnek incelenmiştir. Bitki örnekleri dört farklı satış istasyonundan toplanmıştır. Örnekler mikrodalga yöntemi ile parçalanmış (yakılmış) ve ICP-OES (Inductively Coupled Plasma Optical Emission Spectrometry) spektrometre ile ölçümler belirlenmiştir. Örneklerin mikroelement içerikleri şu şekilde sıralanmıştır: Al (0.597-32.852), Fe (0.331-18.797), Mn (0.08-1.06), Zn (0.1-0.409), Ni (0.015), As (0.104), Cd (0.00-0.03), Pb (0.00-0.16), Cr (0.002-0.111), Cu (0.063-0.292), Co (0.01-0.09) ve Sr (0.107-1.925) ppm. İncelenen tıbbi bitkilerin mikro element seviyeleri belirlenmiş ve insan sağlığı açısından güvenli olduğu sonucuna varılmıştır.
Yield and Quality of Fenugreek (Trigonella Foenum-Graecum L.) as Influenced by Different Sowing Rates and Different Genotypes
(Parlar Scientific Publications (p S P), 2018) Okut, Nese
The current research was performed in order to define the effects of four different sowing rates (ranged from 10 to 40 kg ha(-1) with 10 kg ha(-1) increments) on yield and yield components of two fenugreek genotypes (Eskisehir and Ankara) at Bitlis ecological conditions in 2009-2010 growing seasons. A completely randomized design with three replications was conducted for this study. Differences between sowing rates were significantly associated with oil content, the number of seeds per pod, number of branches per plant, number of pods per plant and seed yield per plant. Higher sowing rates (30 and 40 kg ha(-1)) reduced the rate of oil content, number of branches per plant, number of seeds per pod, number of pods per plant, and seed yield per plant. Differences in sowing rates had no effect on a thousand seeds' weight, plant height, protein content, the number of seeds per pod and the pod length. The highest seed yield (1.28 g plant(-1)) was recorded from 10 kg ha(-1). The seed yield per plant revealed the highest association with number of seeds per pod and number of branches, indicating that the selection performed on these traits would be effective to increase the seed yield. Results showed that, on average, fenugreek seeds contain 6.08%-7.32% oil. After analyzed by GC MS, the seed oil content of two fenugreek genotypes were as follows: oleic acid (15.72-16.02%), linoleic acids (39.72-40.85%), linolenic acid (25.01-26.05%), stearic acid (4.42-4.51%) and palmitic acid (10.98-12.56%). Fenugreek genotypes showed high quantities of linolenic acid which placed it into the drying oil category.