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A preliminary study of fecundity of whiting, Merlangius merlangus euxinus (Linnaeus, 1758) in coast of Tirebolu (Eastern Black Sea)
2018
Burcu Taylan | Sule Gurkan | Ertan Taskavak | Arzu Aydın Uncumusaoglu
In this research, a preliminary study was carried out in January and February 2014 to determine the fecundity of the whiting species in Tirebolu, Eastern Black Sea. After the total length (cm) and weight (0.01 g) of the 70 fish specimens were measured in the laboratory, they were dissected for sex determination. Using the 20 ovaries at the third and fourth maturation stages, 3 sub-samples which is 2-5% of the total ovary weight (from the anterior, median and posterior parts of the ovary) were taken from each ovary to determine the fecundity, and hydrated oocytes were counted with gravimetric method. Total fecundity, total oocytes number in the ovary were computed with the formula F=(n×G)/g. The total length-weight values were 12.6-23.3 cm (mean 17.08±2.12) and 15.59-95.72 g (mean 41.07 ± 16.75), respectively, and total length-weight relationship was computed as W=0.0073L3.024 (R2=0.94) for the 70 fishes evaluated. Fecundity was computed as 3.247-30.534 (mean: 10.139±6.953) eggs and a linear relationship between fecundity and total length was calculated as F=0.0186L4.5631 (R2=0.70). In conclusion, the fecundity results of this prelaminar study were compared with similar studies on the whiting species from Black Sea and other seas.
Show more [+] Less [-]Recycling Model Suggestion for Sustainable Urban Green Areas in Konya
2018
Filiz Çelik
Urban green spaces can be a comprehensive tool to ensure the sustainability of cities. The sustainability of green areas in planning, design, implementation, maintenance and operation processes contributes to the sustainable development of cities as well. There are many ways to ensure that green areas are sustainable from a social, economic and ecological point of view. These include the construction and use of compost under recycling and re-evaluation. The wastes generated as a result of periodic maintenance in urban green areas are disposed together with other wastes in solid waste storage area. However, the use of organic wastes in composting can ensure that green areas are sustainable by reducing both recycling and periodic maintenance costs of green areas. The aim of this study is to improve the idea of recycling and re-evaluation of organic wastes which are emerged in green areas by composting and using them in green areas. For this purpose, a model for composting and replacing fertilizer from organic wastes emerged in green areas of Konya was proposed. Thus, the costs of green areas with very high design, implementation and maintenance expenses will be reduced and they will be sustainable within themselves. The sustainability of urban green spaces will also contribute to Konya's urban sustainability.
Show more [+] Less [-]Polifenol Oksidaz Enzimi ve İnaktivasyon Yöntemleri
2018
Leman Yılmaz | Yeşim Elmacı
Polifenol oksidaz enzimi, sebze ve meyvelerde bulunmasının yanı sıra bazı hayvansal organlarda ve mikroorganizmalarda da bulunmaktadır. Enzimatik esmerleşmeden sorumlu olan polifenol oksidaz enzimi meyve ve sebzelerde yaygın olarak bulunan fenolik bileşiklerin kahverengi pigmentleri üreten kinonlara oksidasyonunu katalizleyen bakır proteinlerinin bir grubudur. Meyve ve sebzelerin endüstriyel olarak hazırlanması sırasında polifenol oksidazın katalitik etkisi sonucu enzimatik esmerleşme meydana gelmektedir. Enzimatik esmerleşme fenolik yapıda bileşenler içeren ürünlerde görünüşü bozmakla kalmayıp istenmeyen renk, koku ve tat oluşumuna ve ürünlerin besleyici değerinde önemli ölçüde kayıplara neden olmaktadır. Bu durum ürünlerin tüketici tarafından kabul edilirliğini etkilemekte ve ekonomik kayıplara neden olmaktadır. Bu derlemede farklı meyve ve sebzelerdeki polifenol oksidaz enziminin bazı karakteristikleri gözden geçirilmiş ve polifenol oksidazı inaktive etmek için kullanılan enzimatik esmerleşme karşıtı kimyasal ajanlar, ısıl uygulamalar, ışınlama uygulamaları ve yüksek basınç uygulaması, vurgulu elektrik alan uygulaması, süperkritik karbondioksit uygulaması ve ultrason uygulaması gibi alternatif yöntemler hakkında bilgi verilmiştir.
Show more [+] Less [-]Karabuğdayın Yazlık Olarak Isparta Doğal Yağış Koşullarında Farklı Ekim Zamanlarında Yetiştirilme Olanaklarının Araştırılması
2018
Nimet Kara | Gökhan Gürbüzer
Çalışma; kısa vejetasyon süresine sahip karabuğdayın Isparta koşullarında yazlık olarak farklı zamanlarda yapılan ekimi ile ilkbahar yağışlarından faydalanarak sulanmadan yetiştirilebilme olanaklarını araştırmak amacıyla yürütülmüştür. Araştırmada Aktaş karabuğday çeşidi kullanılarak, 1 Mart, 10 Mart, 20 Mart, 30 Mart, 9 Nisan ve 18 Nisan (kontrol) olmak üzere 6 Ekim zamanı tesadüf blokları deneme desenine göre 2015 ve 2016 yıllarında tarla çalışması olarak yürütülmüştür. 18 Nisan ekim zamanı kontrol olarak sulanmış, diğer ekim zamanlarında sulama yapılmamış, doğal yağışlara bağlı olarak yetiştirilmiştir. Denemede her iki yılda da 1 ve 10 Mart ekim zamanlarında çıkış olmuş, fakat çıkıştan sonra don zararı nedeniyle tüm bitkiler ölmüştür. Her iki yılda da (2015 ve 2016) bitki boyu, biyolojik verim ve tane verimine ekim zamanlarının etkisi istatistiksel olarak önemli olmuş ve en uzu bitki boyu sırasıyla 65,9 cm ve 60,0 cm, en yüksek biyolojik verim 427,3 kg/da ve 403,7 kg/da ve tane verimi 145,7 kg/da ve 132,8 kg/da ile 18 Nisan ekim tarihinde sulanan parsellerde belirlenmiştir. Her iki yılda da 1000 tane ağırlığı, hektolitre ağırlığı ve protein oranına ekim zamanlarının etkisi istatistiksel olarak önemsiz olmuştur. Isparta ekolojik koşullarında karabuğday ekonomik olarak ancak sulanarak yetiştirilmesi sonucuna varılmıştır.
Show more [+] Less [-]Characterization of Probiotic Properties of Lactic Acid Bacteria Isolated from Yoghurt Available in Bangladesh
2018
Mohammad Shaokat Ali | Shamima Ahmed | Md. Forhad Uddin | Abdul Matin | Mohammad Sharif Uddin | Nilufa Yeasmin
Yoghurt is the common fermented dairy product consumed worldwide and it is considered a potential source of probiotic bacteria (Lactobacilli and Lactococci). To assess the in-vitro probiotic properties of lactic acid bacteria, Lactococcus lactis subsp. lactis, Lactobacillus delbrueckii and Lactobacillus plantarum species isolated from yoghurt sold in different local markets of Chittagong region in Bangladesh were examined by morphological characteristics and biochemical tests. In the preliminary test, all isolates were grown well at acidic pH (pH 3-5) while the optimum growth temperature was 37°C and better growth was observed in the presence of 1-8% NaCl concentrations. In addition, the selected isolates were able to survive up to 3% bile salt concentrations while the best tolerance was at 1% bile salt. The strains successfully inhibited the growth of common pathogenic bacteria likely Escherichia coli, Pseudomonas aeruginosa, Salmonella Paratyphi, Staphylococcus aureus and Bacillus subtilis examined by in vitro growth inhibition test. Most of the isolated strains exhibited resistance pattern against ten commonly used antibiotics in foodborne illness in the country. However, the strains in yoghurt sold at Chittagong city have ideal probiotic characteristics and this fermented dairy product could be a potential source of human probiotic bacteria.
Show more [+] Less [-]The Effect of Dietary Carob (Ceratonia siliqua) Syrup on Growth Performance, Haematological, Serum Biochemical and Immunological Parameters in Tilapia (Oreochromis mossambicus)
2018
Sevdan Yılmaz | Sebahattin Ergün | Ekrem Şanver Çelik
The present study investigated the effects of dietary carob (Ceratonia siliqua) syrup supplementation on growth performance, haematological, serum biochemical and immunological parameters of tilapia, Oreochromis mossambicus. Five isonitrogenous and isoenergetic diets were formulated to contain carob syrup at levels of 0%, 5%, 2.5%, 1.25%, and 0.625%. Fish were fed experimental diets for 60 days. There were no particular differences in weight gain, feed conversion ratio, specific growth rate, red blood cell count, haematocrit ratio (%), serum total protein, albumin, and globulin levels of fish fed experimental diets. However, dietary carob syrup especially with 1.25% incorporation significantly decreased serum glucose, triglyceride, cholesterol levels. The dietary carob syrup especially at 1.25% significantly increased the phagocytic activity, phagocytic index, respiratory burst and potential killing activity. In conclusion, findings of the present study indicate that feeding tilapia with a diet containing 1.25% carob syrup over a period of 60 days might be adequate to improve immune parameters and serum biochemical variables without any adverse effect on growth performance and haematological parameters of fish.
Show more [+] Less [-]Kavunda ABA Uygulamalarının Bitki Büyümesi, Çiçek Cinsiyeti ve Çiçek Tozu Kalitesine Etkileri
2018
İlknur Solmaz | Esma Kartal | Nebahat Sarı
Kavunlarda hibrit tohum üretiminde zaman, işgücü ve verim kaybının önüne geçmek için andromonoik ana materyalde erkek kısırlık ya da erkek kısırlığa sebep olacak kimyasal hibridizasyon ajanları (KHA) kullanımı önem taşımaktadır. Bu çalışmada bazı bitki türlerinde KHA olarak kullanılan ABA hormonunun Galia Fı kavun çeşidinde bitki gelişmesi, erkek çiçek oluşumu ve çiçek tozu kalitesi üzerine etkileri araştırılmıştır. Araştırmada ABA’nın 250 ve 500 ppm’lik iki dozu, fidelikte (F), serada ilk çiçeklenme döneminde askıya alınmış bitkilerde (İÇ) ve fidelik+ilk çiçeklenme dönemlerinde (F+İÇ) uygulanmıştır. Kontrol uygulamasındaki bitkilere ise sadece su püskürtülmüştür. Araştırma bulgularına göre, ABA’nın 500 ppm’lik dozunun F+İÇ ile F uygulamaları bitki gelişimini başlangıçta biraz baskılamış olmakla birlikte, sıcaklıkların yükselmesi ile bu etki ortadan kalkmıştır. ABA uygulamaları erkek çiçeklerin açmasını engellememiş olmakla beraber, erkek çiçek sayısı 500 ppm F+İÇ uygulamasında kontrole göre %62 oranında azalmıştır. Çiçek tozu canlılık ve çimlenmesi üzerine de ABA uygulamalarının kaliteyi arttırıcı bir etkisi olmamakla birlikte, canlılık ve çimlenme oranlarının %95’in üzerinde olduğu tespit edilmiştir.
Show more [+] Less [-]The Change in Some Leaf Micromorphological Characters of Prunus laurocerasus L. Species by Their Habitat
2018
Nurcan Yiğit | Mehmet Çetin | Hakan Şevik
In this study, it was aimed to identify the change in some micromorphological characters in Prunus laurocerasus L. leaves obtained from 6 different provinces located in the areas where different climate types are dominant, depending on their habitat. In this regard, the leaf samples were collected from Prunus laurocerasus L. individuals in the provinces of Rize, Samsun located in the areas including the European-Siberian, Irano-Turanian and Mediterranean phytogeographical regions. The leaf epidermis images were obtained with the help of SEM on the collected leaf samples, and the required measurement procedures were performed on these images with the help of “Image J” measurement program. By measurements performed on the leaf epidermis surface, Stoma Length (µm), Stoma Width (µm), Pore length (µm), Pore width (µm) and Stoma Density (in an area of 1 mm2) measured such as micromorphological characters. The data obtained were subjected to the Variance analysis and Duncan’s test, and the change in these characters depending on their habitat was statistically evaluated. At the end of the study, it was determined that there were statistically significant differences at the confidence level of minimum 95% among the conditions of the habitat in terms of all characters except for the stomatal width.
Show more [+] Less [-]Comparison of Fatty Acid Profile of Edible Tissues of Wild Terrestrial Snail (Helix lucorum L. 1758) Collected in Two Province (Adana and Sinop)
2018
Mustafa Göçer | İlkan Ali Olgunoğlu
The aim of the present study is to compare the crude protein, fat content and fatty acids concentration of snail meat (Helix lucorum Linnaeus, 1758) obtained from Adana and Sinop Province (including 30 snail meat for both region) in Turkey. They were not statistically significant differences in fatty acid profile between two groups. But, in contrast to previous reports, may be due to geographical variation, the results show that the examined snails demonstrated a high content of fat that is between 3.74% and 4.20%. The analyses also indicated that snail meat from Adana province was richer in protein and fat content than Sinop province. In fatty acid composition for both region, monounsaturated fatty acid fraction (MUFA) was dominant followed by saturated fatty acid (SFA) and polyunsaturated fatty acid (PUFA). The ratio of n-3/n-6 and the content of PUFAs were found to be better in Adana province than Sinop. However, for both region, the ratio of PUFA/SFA was lower in H. lucorum than those recommended for nutritional.
Show more [+] Less [-]Evaluation of Food Security in Dairy Products in Terms of Manufacturers in Turkey
2018
Özge Can Niyaz | İsmail Hakkı İnan | Duygu Aktürk
The aim of this study is to evaluate the thought of food security provided in dairy products and the determinants in terms of manufacturers in South Marmara Region in Turkey. The primary data obtained from 70 dairy manufacturers were analysed by Factor Analysis and Logistic Regression Analysis. According to this, price fluctuation and increase in the distance from the place where the milk is provided, reasons such as corporatization are factors that cause the lack of food security in dairy products. On the contrary, the likelihood of providing food security in dairy products increases with the increase in financial sustainability, food safety, quantity of milk and dairy products, the ability to produce and store, the number of employees, the degree of milk use.
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