خيارات البحث
النتائج 171 - 180 من 292
Consumers’ Perception About Genetically Modified Foods and Their Purchase Intention in the City Center of Hatay, Turkey النص الكامل
2016
Ahmet Duran Çelik | Erdal Dağıstan
Consumers’ Perception About Genetically Modified Foods and Their Purchase Intention in the City Center of Hatay, Turkey النص الكامل
2016
Ahmet Duran Çelik | Erdal Dağıstan
In this study consumers’ perception of, and purchase intention for genetically modified foods were examined in the city center of Hatay. The data of the 343 surveys were collected by using the face to face interview method. The data were analyzed by means of Likert Scale, and Spearman Correlation Analysis. According to the survey results, consumers’ risk perceptions about genetically modified foods are quite high. Consumers don’t willingly purchase genetically modified foods, and they intend to consume foods grown in traditional methods. High risk perceptions have a determining role on consumers’ views about genetically modified foods and their purchase intention for them. Another outcome from this study is that consumers’ awareness and knowledge levels about genetically modified foods are quite low, and that their perceptions and attitudes are mostly based on biases.
اظهر المزيد [+] اقل [-]Adaptación del arroz riego (Oryza sativa L.) en el Caribe colombiano النص الكامل
2011
Aramendiz Tatis, Hermes(Universidad de Córdoba Facultad de Ciencias Agrícolas) | Espitia Camacho, Miguel(Universidad de Córdoba Facultad de Ciencias Agrícolas) | Cardona Ayala, Carlos(Universidad de Córdoba Facultad de Ciencias Agrícolas)
In Colombia, the rice crop under irrigation system ranks first in food security, economic value and employment offer among annual crops, becoming the most important. The objective of this study was to quantify increasing, stability and adaptability of irrigated rice in five departments of the Colombian Caribbean area. Data from the Ministry of Agriculture and Rural Development for the departments of Cordoba, Bolivar, Magdalena, Cesar and Guajira, during the year period 1987 to 2008 were used. The increasing in yield was determined using the linear regression analysis among years (independent variable) and grain yield (dependent variable) in each department. The yield stability was determined by the coefficient of variation across of three consecutive periods of five years and the last seven years. The yield adaptability was estimated using linear regression coefficient (bi). The results indicate that progress in grain yield in the Colombian Caribbean, ranged from 1.15% to 3.36% per year and 52.2 to 168.1 kg.ha-1, especially in the department of Bolívar (3.36% per year and 168.1 kg.ha-1). The yield stability was generally high (CV<15.56%) and increased with the years. In the five departments, the rice crop showed general adaptability (bi>4.57) for grain yield. | En Colombia, el arroz ocupa el primer lugar en seguridad alimentaria, valor económico y generación de empleo entre los cultivos anuales, siendo el sistema bajo riego más importante. El objetivo fue determinar el progreso, estabilidad y adaptabilidad del rendimiento de arroz bajo riego, en cinco departamentos del caribe colombiano. Se utilizaron datos del Ministerio de Agricultura y Desarrollo Rural, correspondiente a los Departamentos de Córdoba, Bolívar, Magdalena, Cesar y Guajira, durante el periodo 1987-2008. La estimación del progreso del rendimiento se realizó a través del análisis de regresión lineal entre los años (variable explicativa) y el rendimiento de grano (variable explicada). La estabilidad se determinó a través del coeficiente de variación para tres períodos consecutivos de cinco años y el último de siete. La adaptabilidad, se realizó con el coeficiente de regresión lineal (bi). Los resultados destacan que el progreso en el rendimiento de grano en el Caribe colombiano, osciló entre 1.15% y 3.36% por año y 52.2 y 168.1 kg.ha-1, especialmente en el Departamento de Bolívar (3.36% por año y 168.1 kg.ha-1). La estabilidad, resultó en general alta (CV<15.56%) y se incrementó con los años. Los cinco departamentos, presentaron adaptabilidad general (bi>4.57) para el rendimiento de grano.
اظهر المزيد [+] اقل [-]The Threat of Ochratoxin A in Poultry Nutrition النص الكامل
2016
Emrah Güngör | Aydın Altop | Güray Erener
Ochratoxin A is a toxic substance coming up with growing up of some species of Aspergillus and Penicillium at feedstuffs. Diseases and deaths can occur if this toxic substance is consumed by animals. Ochratoxin A can contaminate easily feedstuffs of mixed feeds while producing, harvesting and storing period and pose a serious threat for world and Turkey considering existing rate in feed and feedstuffs. Moreover taking account of passing to animal tissues, ochratoxin A pose a serious risk for human health. Regarding this, ochratoxin A has negative effects on human such as disorders of kidney and reproductive organs. In addition there is various methods to eliminate this damages made by ochratoxin A. In this review, existing of ochratoxin A in poultry feeds, the negative effects on poultry, transition to tissues and practices that can ease the negative effects were summarized.
اظهر المزيد [+] اقل [-]Identification and Determination of Antibiotic Multiresistance of Gram-negative Bacteria Isolated from Hospital Sewage النص الكامل
2016
Fatih Matyar
In this study it was aimed to determine the microbial diversity and level of antibiotic resistance patterns of Gram-negative bacterial isolates from the hospital sewages. The 219 Gram-negative bacterial isolates to 16 different antibiotics (belonging 10 classes), was investigated by agar diffusion method. A total of 18 species of bacteria were isolated: the most common strains isolated from all samples were Klebsiella oxytoca (27.4%), Klebsiella pneumoniae (20.5%) and Escherichia coli (20.1%). There was a high incidence of resistance to ampicillin (98.6%), streptomycin (95.9%) and erythromycin (90.0%), and a low incidence of resistance to cefepim (13.2%), imipenem (5.0%) and meropenem (3.2%). 35.6% of all bacteria isolated from hospital sewage were resistant to 9 different antibiotics. The multiple antibiotic resistances (MAR) index ranged from 0.25 to 0.94. Results show that hospital sewages have a significant proportion of antibiotic resistant Gram-negative bacteria, and these bacteria constitute a potential risk for public health.
اظهر المزيد [+] اقل [-]The Determination of the Biochemical Properties of Some Monofloral Honey Samples Produced across Turkey النص الكامل
2016
Aziz Gül
The Determination of the Biochemical Properties of Some Monofloral Honey Samples Produced across Turkey النص الكامل
2016
Aziz Gül
This study was conducted in 2013 to determine the biochemical properties of 10 different monofloral honey types produced across Turkey. For the study, honey samples were obtained from beekeepers and the identity and relative percentage of dominant pollen types in samples was determined through microscopic analysis. Pollen analysis revealed that honey types chaste tree (Vitex agnus-castus) and sunflower (Helianthus annuus) contained high proportions of each respective pollen type. These proportions reached as high as 86%, while other honey types such as Anason had low Anasom pollen content, occurring at 45% in whole honey samples. Biochemical analysis revealed that the average honey sample quality characteristics were as followings: ash 0.37±0.04, electricity conductivity 0.79±0.07 mS/cm, moisture 19.15±0.09%, pH 3.97±0.02, acidity 29.07±0.39 meq/kg, hydroxymethylfurfural (HMF), 6.17±0.76 mg/kg, diastase 22.05±0.00, invert sugar 69.72±0.49% and sucrose 2.90±0.30%. These analyses confirmed that honey samples met standards outlined by the Turkish Food Codex Honey Standard, European Union Honey Standard and Codex Standards respectively.
اظهر المزيد [+] اقل [-]A comparison of tissue preparation methods for protein extraction of cocoa (Theobroma cacao L.) pod النص الكامل
2017
Martínez-Márquez, Ascensión | Morante-Carriel, Jaime Alfredo | Bru-Martínez, Roque
Cocoa, Theobroma cacao L. is one of the main tropical industrial crops. Cocoa has a very high level of interfering substances, such as polysaccharides and phenolic compounds that could prevent the isolation of suitable protein. Efficient methods of protein extraction are a priority to successfully apply proteomic analyses. We compared and evaluated two methods (A and B) of tissue preparation for total protein extract by phenol/SDS extraction protocol. The difference in the application of the two methods was that extensively washed dry powder of pod tissue were made in Method A, whereas that crude extract were prepared Method B. Extracted proteins were examined using one-dimensional electrophoresis (1-D). Results show that each extraction method isolated a unique subset of cocoa pod proteome. Principal component analysis showed little variation in the data obtained using Method A, while that in Methods B showed no low reproducibility, thus demonstrating that Method A is a reliable for preparing cocoa pod proteins. The protocol is expected to be applicable to other recalcitrant plant tissues and to be of interest to laboratories involved in plant proteomics analyses. A combination of extraction approaches is recommended for increasing proteome coverage when using gel-based isolation techniques.
اظهر المزيد [+] اقل [-]Efficient in vitro Clonal Propagation of Muscari neglectum Guss. Ex. Ten Using Thidiazuron- α Naphthalene Acetic Acid النص الكامل
2016
Çiğdem Alev Özel | Fatma Ünal
Muscari neglectum Guss. Ex Ten, is an ornamental, herbaceous perennial plant species that grows in the Mediterranean countries with attractive and scented blue-colored flowers. The plant has low seed output, seed dormancy, low germination and propagation rates. This study aimed to develop a reliable microclonal propagation protocol for M. neglectum using TDZ (Thidiazuron)-NAA (α Naphthalene acetic acid) to induce bulblets, roots, and acclimatization of the regenerated bulblets. Maximum number of bulblets per explant (8.25±0.05) was noted on MS medium containing 0.0454 µM TDZ-5.37 µM NAA. The bulblets regenerated in each type of culture medium were very vigorous, and acclimatized easily following rooting on a subculture. Here we show that this protocol is a useful clonal micropropagation system for this important ornamental plant.
اظهر المزيد [+] اقل [-]Pleurotus eryngii Türünün Farklı İzolatlarına Ait Mantarların Bazı Mineral Besin İçeriklerinin Belirlenmesi النص الكامل
2016
Erdinç Uysal | Mustafa Kemal Soylu
Bu çalışma tüm dünyada Pleurotus türlerinin kralı olarak bilinen (The King Oyster) Pleurotus eryngii mantarının farklı izolatlarında mineral madde içeriklerinin belirlenebilmesi amacıyla yapılmıştır. Çalışmada Pleurotus eryngii türüne ait farklı lokasyonlardan elde edilen 15 farklı izolat materyal olarak kullanılmıştır. Örneklerde fosfor, potasyum, kalsiyum, magnezyum, sodyum, demir, mangan ve çinko belirlemesi yapılmıştır. Her bir izolatın mineral içeriği sap ve şapkada ayrı ayrı belirlenerek elde edilen sonuçlar bu şekilde değerlendirilmeye alınmıştır. Elde edilen sonuçlara göre mineral içerikleri sap ve şapkada önemli oranda farklılık göstermiştir. Fosfor, magnezyum, demir, mangan ve çinko şapkada daha yüksek oranda bulunurken potasyum, kalsiyum ve sodyum mantar sapında yüksek belirlenmiştir. Ortalama değerler dikkate alındığında izolatlar arasında mineral içerikleri açısından önemli farkların olduğu görülmüştür. K7 ve J113 en yüksek fosfor içeren izolat olmuştur. WC888 hem potasyumu hem de sodyumu en çok içerirken, WC999 mangan ve magnezyum içeriği en yüksek olan izolatlar olmuştur. Kalsiyumu en fazla J113 izolatı içerirken, demir açısından en zengin izolat K78 olarak saptanmıştır. Çinko açısından en yüksek içerik K78, J113, M18 ve WC 955 izolatlarında belirlenmiştir.
اظهر المزيد [+] اقل [-]Phosphorus Use Efficiency in Canola Genotypes النص الكامل
2016
Kürşat Korkmaz | Çağatay Altıntaş
Phosphorus (P) deficiency is a widespread macronutrient deficiency and is one of the major constraints limiting canola production. Efficient P fertilizer method’s is important for economic production of canola and sustaining of environmental quality. The aim of this research is to investigate P use efficiency (PUE) of canola genotypes at an early growth stage. The experiment was set up as a completely randomized design in a factorial scheme. The factors were ten canola genotypes (Excalibur, Nelson, Vectra, Orkan, Triangel, TKK08-5, Oase, Elvis, Es Hydromel and Licord) and three P rates (0, 50 and 100 mg kg-1). The plant parameters, dry weight of shoot and root varies significantly with P levels in all applications. In general, P concentrations and dry weight of the genotypes are linearly raised by P treatments. The genotype Elvis produced significantly higher shoot dry matter 9.24 g pot-1 at 100 mg kg-1 P rate compared to the other applications. However, without P, dry matter (DM) of genotypes varied between 1.67 to 6.96 g pot-1. Cultivars classified as efficient responsive are: Elvis, inefficient responsive: Nelson, Orkan, Oase, Licord, and efficient nonresponsive: Excalibur, Vectra, Triangel, TKK08-5, Es Hydromel. Plant dry matter can be used for identification of the genotypes which could be adapted to low or high soil P availability conditions at an early growth stage. Nutrient use efficiency and genotypic differences in plants should be considered in order to create an accurate and a balanced fertilizer program as well as improving crop yield in agricultural production system.
اظهر المزيد [+] اقل [-]Determination of Water Quality Parameters and Heavy Metal Content in Surface Water of Çiğdem Pond (Kastamonu/Turkey) النص الكامل
2016
Aslı Kurnaz | Ekrem Mutlu | Arzu Aydın Uncumusaoğlu
The main aims of this study were to observe the seasonal variations of physicochemical parameters and heavy metal content, to determine the water quality properties and the suitability level in terms of aquatic life, and also to classify the quality of water in accordance with the Surface Water Quality Management Regulation (SWQMR) criteria at Çiğdem Pond (Kastamonu/Turkey). In total, 21 physicochemical parameters and 7 heavy metals were investigated for water quality assessment of the studied pond between July 2015 and June 2016 in 3 stations. The water quality in Çiğdem Pond was found to be Class I according to SWQMR. The results of this study provide a data baseline for future studies on subsequent evaluations of possible future environmental contamination. Also, to protect the water quality and to ensure the health of aquatic life in this area, it is required to make regular observations.
اظهر المزيد [+] اقل [-]Role of Legislature in Sustainable Agricultural Development in Developing Nations: A Case Study of Nigeria النص الكامل
2016
Akinbode Michael Okunola
When continuity is lacked in the agricultural programs and policies of a developing nation, such nation cannot avoid to keep moving round a circle. Such nation’s agricultural sector will be full of activities without actions and achievements will elude such country. This study therefore reviewed some of the agricultural programs and policies in Nigeria, their failures and successes as well as reasons behind the failures and success vis-à-vis the recent agricultural development strategy of Nigeria; Agricultural Transformation Agenda which has had its attending major successes of lifting the agricultural economy of Nigeria from being a democratic dividend to profit-oriented commercial business sector of the economy and x-rayed the role of legislature in sustainability of the successes of the agricultural strategy for continuity of agricultural development in Nigeria.
اظهر المزيد [+] اقل [-]The Comparison of Agricultural Knowledge and Information Systems (Akis) For Adopters and Non-Adopters of Good Agricultural Practices in Bafra District of Samsun, Turkey النص الكامل
2016
Mustafe Abdulkadir Abdurahman | Kürşat Demiryürek | Nur İlkay Abacı
The purpose of the study is to compare Agricultural Knowledge and Information Systems (AKIS) for adopters and non-adopters of Good Agricultural Practices (GAPs) in the Bafra district of Samsun, Turkey. The main materials of this study are the data obtained from a survey and interview with adopters and non-adopters of GAPs in Bafra district. The research data were collected from 77 farmers contained both adopters and non-adopters of GAPs. Statistical analysis, such as Chi-square and t-test was used. The study results presented the socio-economic characteristics of farmers. There was a significant difference between adopters and non-adopters of GAPs, according to household size, organizational membership, farm size, livestock and crop production. Meanwhile, the information sources such as a district agricultural manager/personnel, adviser of the farmers’ union association (GAPs) and pesticide/fertilizer dealers were preferred the main sources of agricultural information for adopters of GAPs. However, it recommended that information sources like research institute, university and cooperatives needs to be improved by strengthening their way of information dissemination. In terms of usefulness of AKIS for this study, it seems that this system was insufficient to analyze this study. Even though the functions of this system are essent ial elements, they are insufficient for establishing a network of complex innovation-oriented institutional arrangements. In the future, this study suggests to analyze GAPs it needs to use Agricultural Knowledge and Innovation System (AKIS) approach, because this system have many interaction networks that can facilitate the researchers to reach the innovation easily to the intended farmers.
اظهر المزيد [+] اقل [-]