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Evaluation of Soil Erosion and Sustainable Land Use Management in the Sarısu Basin 全文
2017
Ertuğrul Karaş | İrfan Oğuz
Land use management requires controlling natural resources for sustainability. Soil erosion related to improper land use is a major issue around the world. Land degradation may harm the health of ecosystems. Defining the soil loss in a basin is the starting point in the restoration of soil quality for crop production. Reducing soil losses to a tolerable rate is one of the primary objectives for sustainability and soil conservation. Central Anatolia is under considerable risk due to an increase in the cultivation of marginal lands for food production. Cultivated lands have already been reached the final limits throughout the last 50 years. Moreover, forests and considerable areas of pasture have recently been converted to ploughed fields due to agricultural expansion. This study was conducted in the Sarısu basin to evaluate soil losses and land use management for sustainability. The Universal Soil Loss Equation model and Geographic Information System techniques were used to estimate the soil losses. The mean potential soil loss of the basin was calculated to be 1.88 t ha-1 per year with the Universal Soil Loss Equation model. These results are comparatively small when compared to the average value for Turkey of 13 t ha-1 yearly. Our calculated results are closer to the value for the Sakarya river basin, which is approximately 2.77 t ha-1 y-1. In this study, land usages in the Sarısu basin were evaluated in terms of soil losses, tolerable soil loss rates and soil conservation precautions.
显示更多 [+] 显示较少 [-]Seafood Consumption Attributes and Buying Behaviours According to the Generations: A Study on Millennial Generation in Turkish Market 全文
2017
Osman İnanç Güney | Levent Sangün
This paper focus on the seafood consumption attitudes and behaviours of the millennials (Generation Y) and non-millennials (Generation X, Baby Boomers and Silent Generation) comparatively. The data was collected from a face to face survey which was applied to randomly select 407 individuals in the city of Adana, Turkey in November 2016. As a result of factor analysis applied in the study, it was found that Millennials was significantly and inversely correlated with consumption of wild fish and freshwater fish. Non-millennial generation was inversely correlated with consumption of marine fish, freshwater fish and mussels and the correlation is insignificant. According to the results of the chi square test, it was determined that Millennials mostly preferred to consume fresh (unprocessed) fish. Mann-Whitney test results show that they value health and nutrition factors for consumption and there is a significant difference between these two factors. Besides, factors mainly effecting their purchase behaviour of seafood are directed to freshness, seasonality, place of purchase and wild-aquaculture product classification and there are significant differences between these factors. The fact that the Millennial’s average response to consumption and purchasing is higher indicates that they are more cautious.
显示更多 [+] 显示较少 [-]Evaluation of Chemical Characterization, Antioxidant Activity and Oxidative Stability of Some Waste Seed Oil 全文
2017
Sibel Uluata | Nurhayat Ozdemir
In this study, fatty acid composition, antioxidant activity, total phenolic compounds (TPC) and oxidative stability of cherry seed (SCO), sweet cherry seed (SCSO), mulberry seed (MSO) and plum seed oil (PSO) were determined. Oleic acid was determined as primary fatty acid (42.9-67.3%), and followed by linoleic acid (23.4-41.8%) for SCO, SCSO and PSO. Linoleic acid was determined as primary fatty acid in MSO. γ-tocopherol was determined the main and highest tocopherol isomers varied from 579.9 to 605 mg/kg oil in SCO, SCSO and PSO, whereas δ-tocopherol was determined main tocopherol isomer with 1354mg/kg oil value in MSO. Plum seed oil (PSO) was the highest antioxidant activity values in both 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis-(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) assays. There was no significant differences in lipid hydroperoxide and TBARS (2-thiobarbituric acid-reactive substance) formation among SCO, SCSO and MSO. PSO had the highest induction period (15.1 h), followed by MSO (1.4 h), SCSO (1.5 h), SCO(1.3 h). PSO was oxidatively more stable than the other oil samples. This research shows that these waste seed oils have high antioxidant capacity and tocopherol content, so they could be used in food industry.
显示更多 [+] 显示较少 [-]An Investigation of Multiple Antibiotic Resistance and Identification of Bacteria Isolated from Gölbaşı and Azaplı Lakes (Adıyaman) 全文
2017
Fikret Büyükkaya Kayış | Sadık Dinçer | Fatih Matyar | Hatice Aysun Mercimek Takcı | Melis Sümengen Özdenefe | Afet Arkut
Identification and multiple antibiotic resistances of amphicillin, chloramphenicol, streptomycin and tetracycline resistant gram-negative bacteria that isolated microorganisms from Gölbaşı and Azaplı lakes (Adiyaman) were investigated in this study. Seasonally taken isolates of totally 386 bacteria in 10 different species from 7 genera were scanned against 16 antibiotics [gentamycin, imipenem, kanamycin, chloramphenicol, meropenem, nalidixic acid, nitrofurantoin, penicillin, cephalothin, cefazolin, cefpirome, ceftizoxime, cefuroxime, streptomycin, tetracycline and trimethoprim-sulphamethoxazole (Bioanalyse)] by using the disc diffusion method to determine the prevalence of multiple antibiotic resistance. Multiple antibiotic resistance of stations showed seasonal changes between 0.29 and 0.91. In generally, multiple antibiotic resistance in Golbasi and Azapli lakes were higher than the reference value and highest multiple antibiotic resistance values were obtained at summer season (3th period). When the obtained data are considered, high multiple antibiotic resistance poses a risk in terms of public health and for economically important animals.
显示更多 [+] 显示较少 [-]Optimization of Solid Phase Microextraction Conditions for Volatile Components of Foods by Using Response Surface Methodology 全文
2017
Ceyda Dadalı | Yeşim Elmacı Elmacı
High vacuum steam distillation, simultaneous distillation extraction, steam distillation, purge and trap methods are used for sample preparation in volatile component analysis. Since these methods are difficult and costly to implement, these methods have left their place to the solid phase microextraction technique. Extraction conditions such as extraction temperature, extraction time, sample volume and fiber type should be optimized in order to increase the efficiency of extraction in volatile component analysis with solid phase microextraction in foods. In the optimization of extraction conditions in volatile component analysis of foods, studies have been carried out to utilize the response surface method, which reduces the number of experiments and also examines the interaction effect of the independent variables. In this review, it is aimed to give information about current studies using response surface methodology in optimization of volatile compound analysis of foods using solid phase microextraction technique.
显示更多 [+] 显示较少 [-]Metabolic Effects of Dietary Proteins, Amino Acids and The Other Amine Consisting Compounds on Cardiovascular System. 全文
2017
Elif Uğur | Reyhan Nergiz Ünal
During the prevention and treatment of cardiovascular diseases, first cause of deaths in the world, diet has a vital role. While nutrition programs for the cardiovascular health generally focus on lipids and carbohydrates, effects of proteins are not well concerned. Thus this review is written in order to examine effect of proteins, amino acids, and the other amine consisting compounds on cardiovascular system. Because of that animal or plant derived proteins have different protein composition in different foods such as dairy products, egg, meat, chicken, fish, pulse and grains, their effects on blood pressure and regulation of lipid profile are unlike. In parallel amino acids made up proteins have different effect on cardiovascular system. From this point, sulfur containing amino acids, branched chain amino acids, aromatic amino acids, arginine, ornithine, citrulline, glycine, and glutamine may affect cardiovascular system in different metabolic pathways. In this context, one carbon metabolism, synthesis of hormone, stimulation of signaling pathways and effects of intermediate and final products that formed as a result of amino acids metabolism is determined. Despite the protein and amino acids, some other amine consisting compounds in diet include trimethylamine N-oxide, heterocyclic aromatic amines, polycyclic aromatic hydrocarbons and products of Maillard reaction. These amine consisting compounds generally increase the risk for cardiovascular diseases by stimulating oxidative stress, inflammation, and formation of atherosclerotic plaque.
显示更多 [+] 显示较少 [-]A Study on Prevalence of Escherichia coli O157 with a Verified Method in Foods 全文
2017
Semiha Yalçın | Ayla Ünver Alçay | Gözde Yüzbaşıoğlu | Burcu Çakmak | Aysun Sağlam
The purpose of this study were to identify the presence of E.coli O157 and to determine its prevalence in foods which were collected from various restaurants, shops and markets in Istanbul. Also, validation of detection method of E. coli O157 in all food stuffs was carried out according to applicability, repeatability, and minimum detection limit (LOD) and false positive and negative analysis based on TS EN ISO 16654 standard method. The results showed that the prevalence of E. coli O157 in food was 2%, and its prevalence increased in April and May.
显示更多 [+] 显示较少 [-]Probiotic Lactococcus lactis: A Review 全文
2017
Priti Khemariya | Sudhir Singh | Gopal Nath | Anil K Gulati
Lactococcus lactis plays a critical role in food, dairy and health sectors. In food and dairy industries, it is found in production processes of various fermented products such as sausages, pickled vegetables, beverages such as beer and wine, breads, soymilk kefir, sour milk, butter, cream, fresh cheese and different types of cheeses, like Cheddar, Colby, Cottage cheese, Camembert, cream cheese, Roquefort and Brie. Additionally, there is an increasing interest towards the possible health benefits of the probiotic activity of this organism which generally is species and strain specific and depends upon the survival in gastrointestinal tract with sufficient number. Certain strains have the ability to produce antimicrobial peptide called nisin which exhibits preservative potential. Therefore, application of bacteriocinogenic Lactococcus lactis in food and dairy sectors to preserve foods as a natural way and contributing health promoting attributes due to probiotic activity would definitely fulfil today’s consumer demands. This paper aimed to review the adaptation, antibiotic resistance, therapeutic and preservation potential of bacteriocinogenic and probiotic Lactococcus lactis.
显示更多 [+] 显示较少 [-]Determination of the Effect of Price Fluctuations on Producer Income – the Case of Potatoes 全文
2017
Hasan Arısoy | Zeki Bayramoğlu
Prices of agricultural products fluctuate depending upon several factors. In Turkey, potatoes are one of the main products for which price fluctuations are observed. This study was undertaken to determine the effect of the fluctuation in potato prices on producer incomes in Turkey. The Neyman Method was used to determine the sample size. The number of enterprises required to achieve a representative sample size was determined to be 56, with a 5% error margin and a 95% reliability limit. The way in which the potato cultivation area is affected by price was examined. The Koyck model was utilized for this purpose. By using Koyck analysis, average lag time was calculated to be approximately 1 year. This result indicates that the fluctuation in potato prices has quite a rapid effect on production. It was determined that producer income varies greatly depending on annual potato prices. The difference between estimated potato price and the actual price for the year 2012 resulted in an income loss of 11,198.6 $/ha. Some sustainable efforts such as production planning can be recommended to prevent these price fluctuations.
显示更多 [+] 显示较少 [-]Impact of Brewery Waste Sludge on Sorghum (Sorghum bicolor L. Moench) Productivity and Soil Fertility in Harari Regional State, Eastern Ethiopia 全文
2017
Nano Alemu Daba | Abduletif Ahmed | Muktar Mohammed
The study was conducted on farmers' field in sofi district of Harari Regional State during 2013/2014 main cropping season, eastern Ethiopia, to investigate the impact of brewery sludge on sorghum production and soil fertility. The treatments comprised seven levels of brewery sludges (0, 2.5, 5.0, 7.5, 10.0, 12.5 and 15.0 t ha-1) and NP inorganic fertilizer at recommended rate, arranged in randomized complete block design with four replications. Application of brewery sludge at 15 t ha-1 significantly increased the yield and biomass yield of sorghum by 79 and 85% over control and by 57 and 67% over NP application, respectively. There was no effect of brewery sludge application on heavy metals concentrations in soil after crop harvest, compared to international standard tolerable level. Co and Se levels were high in the control as well as in the soils treated with brewery sludge indicating the already high concentration of these heavy metals in the soils of the area. Plots, which received higher brewery sludge application, resulted in decreased or less percentage of grain nitrogen content showing the independence of grain protein content on lower brewery sludge level. The nitrogen uptake by sorghum grain, straw and the total was maximum (52.68, 44.25 and 79.03 kg ha-1, respectively) with the application of brewery waste sludge at 10 and 15 t ha-1 which were significantly higher than the other brewery sludge and NP mineral fertilizer applications.
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