Browsing by Publisher "Cevkor Vakfi"

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    Determination of microfungi Flora of soil polluted by industrial wastewater in Aydın, İzmir and Manisa city; [Aydın, İzmir ve Manisa i̇llerinde endüstriyel atıksular ile kirlenmiş toprakların mikrofungus Florasının belirlenmesi]
    (Cevkor Vakfi, 2011) Başbülbül G.; Biyik H.; Kalyoncu F.; Kalmiş E.; Oryaşin E.
    In this study, soil samples of 14 different localities polluted with industrial wastewaters around Aydi{dotless}n, İzmir and Manisa City were taken with seasonal intervals. The samples were brought to the laboratory and their microfungi were isolated and identified. The most frequently isolated genus from soil samples was found to be Aspergillus, followed by genus Penicillium. Among the isolated microfungi, Aspergillus niger is the most abundant species in soil. Microfungal concentrations of soil samples varied between 3,8 × 101 and 1,86 × 105 cfu/g. Depending on seasons, salinity of stations were measured between 0.004% and 0.56%, pH were between 6.36 and 9.81 and organic matter were between 0.13% and 29.15.
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    Phytotoxicity of water and sediment from Nif Brook (Izmir, Turkey) on green algae desmodesmus (=Scenedesmus) subspicatus; [Nif Çayı (İzmir, Türkiye) su ve sedimenti'nin yeşil alg desmodesmus (=Scenedesmus) subspicatus üzerine fitotoksisitesi]
    (Cevkor Vakfi, 2012) Katalay S.; Boyacioglu M.; Cakal Arslan O.; Parlak H.; Ali Karaaslan M.
    The water of Nif Brook (Izmir, Turkey) is polluted by industrial, domestic, and agricultural sources. As the water of the brook is used for domestic and industrial water supply as well as for irrigation, it is of great importance to know the toxicity potential for the natural populations. For this purpose the standard test protocol for the short term phytotoxicity test method OECD 201 Algal Growth Inhibition has been evaluated with cultures of green algae Desmodesmus (=Scenedesmus) subspicatus as the representative of the first trophic level. The test has been used to assess the toxicity of both water and sediment samples from the brook. Five sampling sites from the brook were selected considering the type of pollution sources. The water samples were tested with 10, 20, 40, 60, 80 and 100 % dilutions in a test medium. Extracts of sediment samples were assayed in three different concentrations (20, 40 and 100 mg/mL). The effects on the growth of D. subspicatus were evaluated by scoring cell numbers under the light microscope with a Neubauer haemocytometer counting chamber. According to the results, the water samples stimulated the algal growth (except station 1); although all sediment samples inhibited the growth of populations, in several grades.
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    Investigation of boron pollution in the Gediz River; [Gediz Nehrinde for kirliliǧinin araşti{dotless}ri{dotless}lmasi{dotless}]
    (Cevkor Vakfi, 2014) Minareci O.
    This study was conducted to determine the concentration of boron in the waters of the Gediz River. According to the results, the boron concentrations ranged from 0.125 to 4.548 mg/L. The average boron value (2.428 mg/L) was compared with "Environmental Regulations, Water Pollution Control Regulations and Quality Criteria for Inland Water Resources by Class". The Gediz River was determined as class IV (very polluted) in terms of the boron parameters. It was concluded that the reason for the high boron values were natural and/or industrial discharges at some stations.
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    A new analytical method for the determination of phenolic compounds and their antioxidant activities in different wheat grass varieties; [Farkli{dotless} buǧday çimi çeşitlerinin antioksidan aktiviteleri ve fenolik bileşiklerin tayini İçin yeni bir analitik Metod]
    (Cevkor Vakfi, 2014) Akcan Kardas T.; Durucasu I.
    In this work, the phenolic content and antioxidant capacity of wheat grass, Turkish Amber Durum wheat was studied. For this purpose Turkish Amber Durum wheat was germinated at three different times (15, 30 and 40 days). All the wheat samples sprouted in the same organic conditions and then dried with air and without sunlight and placed into an incubator at 50°C overnight. The dried and milled amber wheat grass was extracted with ethyl acetate and compared for their antioxidant capacities against the 2, 2-diphenyl-1- picrylhydrazyl (DPPH.) radical, and at the same time the total phenolic content (TPC) was determined. Phenolic compounds in the extracts were examined by high performance liquid chromatography (HPLC). In this study, by using a new method, nine standards were separately detected within 50 min by using the HPLC system, as previously reported by other authors. The major phenolics, identified in the wheat grass that consisted of ferulic acid, gallic acid, caffeic acid, pcoumaric acid, ellagic acid, benzoic acid, p-hydroxybenzoic acid, syringic acid, quercetin and bha (butylated hydroxyanisole). The highest antioxidant and antiradical activities were detected in Turkish Amber wheat that sprouted in 15 days. This study demonstrates that the importance of wheat grass is due to its high antioxidant activity. Consumption of wheat grass has positive effects on human health such as reduced risk of coronary heart diseases, certain type of cancers and stroke. Due to the high antioxidant effect of wheat grass the aim is to use it as a food preservative. When wheat grass will be used as a natural food preservative, carcinogenic effects of synthetic food preservatives for body would be preserved.
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    An investigation on habitat and population properties of local endemic Erodium somanum; [Lokal endemik Erodium somanum’un habitat ve populasyon Özellikleri Üzerine bir İnceleme]
    (Cevkor Vakfi, 2015) Oskay D.; Altan Y.
    Habitat and population properties of Erodium somanum with also changing these characters timely were investigated. Distribution soils of this species are slightly alkaline, without salt and generally limes structure, adequate for ferrous but poor for phosphor. Climate type is semi-arid upper Mediterranean especially winter is cool. Distribution area of population is approximately 5 km2. Population density calculated as 3.04. According to results of size and sexual dispersal of individuals, a total of 83% of plants in spreading area between 0 to 25 cm2 were determined not yet attained sexual mature. The ratio of sex index in population was 1.26, average of the demographic increase of the flowering season for each year was only 35%. We suggested this species to CR B1ab(i)+(iii) in endangered groups of IUCN criteria based on the data that obtained from population studies. © 2015, Cevkor Vakfi. All rights reserved.
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    Ecological status of the coastal waters of Ayvalık (Aegean Sea, Turkey) assessed using the EEI method; [EEI metodu ile Ayvalık (Türkiye) kıyı sularının ekolojik durumunun saptanması]
    (Cevkor Vakfi, 2015) Taskin E.
    Macroalgae and angiosperms are proposed as biological elements to assess the ecological status of coastal waters and transitional systems by the EU Water Framework Directive. Recently, the Ecological Evaluation Index (EEI) was intercalibrated in the Mediterranean eco-region by the Mediterranean Geographic Intercalibration Group (MEDGIG). In the present paper, the EEI was tested at two different localities, the inner and outer bays of the city Ayvalık located on the Aegean coast of Turkey. The study shows a high ecological quality for the outer bay, whereas, the inner bay is of moderate quality. © 2015, Cevkor Vakfi. All rights reserved.