Refine search
Results 131-140 of 392
Natural Food Colorants Obtained from Algae and Their Functional Properties Full text
2017
Işıl Ilter | Saniye Akyıl | Mehmet Koç | Figen Kaymak-Ertekin
Colour is one of the major features that fascinate the customers and makes the foods more allurement. Due to changes of customer demands and countries’ legislations, usage of synthetic colorants is being decreased every day and food industry tends to use natural colorant. Algae have recently gained importance owing to a sustainable natural source of colorant. Algae can rapidly increase their biomass compared to plants thus they produce more pigments. This review covers the subjects about the functional properties and usage areas of natural colorants obtained from algae; phycocyanin, phycoerythrin, astaxanthin, canthaxanthin, β-carotene, lutein, fucoxanthin.
Show more [+] Less [-]Effects of Salinity Stress on Emergence and Seedling Growth Parameters of Some Maize Genotypes (Zea mays L.) Full text
2017
Ömer Konuşkan | Hüseyin Gözübenli | İbrahim Atiş | Mehmet Atak
Maize is a very important cereal all over the world and generally cultivated in irrigated agricultural areas. Salinity affects adversely maize productivity in these areas. Maize is known as a salt sensitive species. The salt tolerance level identification in the large genetic resources and breeding populations is an important research topic for solving the salinity problem. The effects of NaCl stress on germination and seedling growth of fifteen maize genotypes were investigated in this study. Electrical conductivity (EC) values of the NaCl were settled 0 (distilled water), 4, 6, 8, 10 and 12 dS m-1. This investigation was performed as factorial arrangement of completely randomized design with four replications. Analysis of variance (ANOVA) showed that genotypes, salinity levels and interaction between genotype x salinity were significant for all the investigated treatments emergence index (EI), root dry weight (RDW), shoot dry weight (SDW), root length (RL), shoot length (SL), and salt tolerance indexes (STI). Results also revealed that the highest reduction in emergence index (59.7%) were obtained in the highest level (12 dS m-1) of salinity. The results further revealed that the cultivars named DKC 6589, PR31G98, and PR31A34 were the most tolerant genotypes than the others under NaCI stress.
Show more [+] Less [-]Investigation of The Effect of Whole Pumpkin (Cucurbita pepo L.) Powder on Quality Criteria of Biscuits Full text
2017
Cem Baltacıoğlu | Nisanur Ülker
In this study, pumpkin (Cucurbita pepo L.), which is usually produced for its seeds, was used for production of whole pumpkin powder directly incorporated into biscuit formation. Fiber, protein and ash content of pumpkin powder are determined 13.4%, 8.5% and 4.7% (dry basis), respectively. Pumpkin powder was added into the dough by means of displacement with the wheat flour at rates of 15%, 30% and 45% during biscuit production. Firmness, work of shear, stickiness and work of adhesion were examined after adding pumpkin flour to biscuit dough at different rates and an increase of firmness, work of shear, stickiness and work of adhesion were recorded as 58.9%, 72.4%, 52.1%, and 29.4%, respectively. A decrease of 24.8% in thickness and 22.7% in volume were observed as the amount of pumpkin flour increases. When the color values were examined, darker biscuits were obtained compared to the control biscuit. Approximately an increase of 232.6% in ash content in biscuits was observed. Biscuits adding pumpkin powder had 58.4% more moisture content than the control biscuit. While decrease of hardness and toughness were observed as 82.3% and 85.4%, respectively, a significantly change of brittleness value was not observed. Biscuits were evaluated in the sensory analysis in terms of crust color, inner color, homogeneity and size of pore, taste, odor, softness, and dissolve in the mouth and greasy feeling in the mouth. According to the results of sensory analysis, biscuits that 45% pumpkin powder was added was the highest rated. According to the study, positive effects were obtained in terms of nutritional properties and favorable results were also found in texture and color of biscuits that pumpkin powder was added. These findings were also supported by the results of sensory analysis.
Show more [+] Less [-]Determination of Sensitivity of Different Cereal Species to Zinc Deficiency Full text
2017
Ayfer Alkan Torun | Halil Erdem | İnci Tolay | Mustafa Bülent Torun
Zinc (Zn) deficiency is an important mineral nutrient problem that restricts the crop yield especially that of the cereals grown in calcareous soils. This study was carried out with the aim of testing the sensitivity of various cereal species consisting of bread (BDME-10, Bezostaja), durum (Kızıltan Ç-1252) and rye (Aslım) to Zn deficiency. In experiments carried out under greenhouse conditions plants were grown at two different Zn doses (Zn 0 and Zn 5 mg kg-1). When the plants were 44 days old, Zn deficiency symptoms were observed and scored for the severity of Zn deficiency according to 1-5 scale and the plants were harvested. With respect to the severity of Zn deficiency symptoms, the most severe symptoms were observed in the C-1252 (1.0) and Bezostaja (2.0) varieties while the least mild symptoms were observed in varieties of Aslım (4.0) and Kızıltan (3.0). A distinctive increase in shoot dry matter yield has been realized with Zn application which was highest in Ç-1252 (78.8%) and BDME-10 (52.5%) varieties. Greatly differential responses have been seen to Zn deficiency among cereal species and varieties within the same species. Symptomatically and with respect to dry matter yield while durum wheat was affected severely from Zn deficiency, bread wheat was affected moderately and rye has been seen to be affected least. According to the severity of Zn deficiency symptoms and plant growth cereals which are the subject of experiment have shown a rank as as Ç1252> BDME-10> Kızıltan> Bezostaya> Aslım.
Show more [+] Less [-]Root Biomass Distribution with Root and Shoot Development at Different Growth Stages of Wild, Ancient and Modern Wheat Species Full text
2017
Hayati Akman
This study was conducted to investigate root and shoot traits of wild, ancient and modern wheat genotypes belonging to 8 different species at long tubes under field weather conditions. It was found significant differences between genotypes with regard to root and shoot traits. The research results indicated that root biomass distribution of genotypes at GS 31 ad GS 69, respectively was found 59.2% and 56.3% in 0-30 cm, 76.7% and 71.9% in 0-60 cm. Modern wheats (Çeşit 1252, Konya 2002) and Triticum vavilovii (ancient wheat) had high root biomass distribution in top soil. In the study, species with AABBDD genomes had higher root length than those with AABB, AABBGG and AA genomes. Triticum dicoccoides, Triticum timopheevii and Triticum monococcum had lower values than other genotypes in terms of root length, crown root number, root biomass, shoot biomass and plant height at both growth stages (GS 31 and GS 69), while Triticum vavilovii and Triticum spelta (hexaploid) took part in the front. Accordingly, Triticum vavilovii and Triticum spelta may be used in breeding programs to improve new modern cultivars with high root and shoot traits.
Show more [+] Less [-]The Examination of The Main Transportation Arteries of Konya In Terms of Landscape Architecture Design Criteria Full text
2017
Sertaç Güngör | Ahmet Tuğrul Polat
Ensuring comfort of use and security of pedestrians, which are the main users of urban green spaces, and the determination of their needs are important since local authorities are guiding for new pedestrian zone studies in the Konya city. Because of the problems caused by the upper structure, the necessary care is not given in terms of transportation comfort, pedestrian safety, vehicle security, plant design and ergonomic / antropemetric standards. The pedestrian way and refuge landscape designs have an important position and amount among open green areas on the scale of Konya. However, it was identified that the applications conducted were inadequate in terms of aesthetic and functional characteristics and were not suitable for the urban landscape design principles, in general, and the standards of urban afforestation of the streets. In this study, the current situation of 3 main streets of Konya used most intensely was examined in terms of landscape design criteria and some suggestions were made by attempting to identify the improvement works that should be performed by the public authorities.
Show more [+] Less [-]Contents of Trace Elements in Wild Sweet Chestnut From Giresun/Turkey Origin Full text
2017
Ümit Şengül | Rıdvan İlgün
There are hundreds of years old wild sweet chestnut trees grown among alder, hornbeam, and pine etc. trees in natural forest of Giresun/TURKEY. In this study, trace element contents of chestnuts collected from chestnut trees in these natural forests were investigated. For this purpose, A total of eight elements, manganese (Mn), iron (Fe), zinc (Zn), nickel (Ni), cobalt (Co), selenium (Se) and lead (Pb) were determined by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) in chestnut samples collected from ten chestnut trees. The content of trace elements was determined separately in fruit, bark and pellicle parts of chestnut. In chestnut fruit samples, highest concentration values in mg kg-1 of Mn, Fe, Zn, Ni, Cu, Se, Co and Pb are: 88.29, 72.96, 27.76 8.25, 7.81, 2.28, 0.056 and 0.043 respectively. Chestnut bark has been shown the highest values as Mn 176.01, Fe 96.55, Zn 26.97, Ni 4.33, Cu 8.91, Se 3.08, Co 0.089 and Pb 0.058 mg kg-1. The highest concentrations of trace elements in chestnut pellicle are found as Mn 176.26, Fe 92.98, Zn 60.06, Ni 5.79, Cu 11.4, Se 3.29, Co 0.135 and Pb 0.095 mg kg-1. These results suggest that natural chestnuts grown in the Giresun region are quite rich nutrients in terms of trace element contents.
Show more [+] Less [-]Effects of Chemical Fertilizer, Algea Compost and Zeolite on Green Bean Yield Full text
2017
Aysun Türkmen | Yalçın Kütük
The present study used chemical fertilizer, brown algae compost and zeolite carried out in the field of Giresun Hazelnut Research Center between May-November 2014 in pots according to randomized blog design as three replicate each. Treatment groups were consist of eight different combinations as follow; G1-Control, G2-Zeolite, G3-Compost, G4-Chemical Fertilizer, G5-Zeolite+Compost, G6-Zeolite+Chemical Fertilizer, G7-Compost+ Chemical Fertilizer, G8-Compost+Zeolite+ Chemical Fertilizer. The brown algae (Cystoseira sp.) were used as compost material. These combinations were applied to green beans (Phaseolus vulgaris). The green beans were seeded by hand to arrange planting depth of 5-6 cm and 20 seeds/m2. Except control group, each treatment was added fertilizers as 50 g zeolite, 50 g compost, and 25 g chemical according to treatment design. Half of the chemical fertilizers were added at seeding time and the rest after two weeks. Collected soil samples were analyzed right after harvest, the greatest values of treatment groups were determined as; Carbon% G1: 5.08, nitrogen G3: 0.09 ppm, sodium G5: 139 ppm, potassium G6 and G8: 5 ppm, magnesium G2: 1865 ppm, calcium G6: 8.33 ppm, manganese G2: 359 ppm, iron G6 : 16070 ppm, cobalt G6 and G7: 7.91 ppm, copper G2: 17.5 ppm, zinc G8: 28.0 ppm, selenium G7: 4.17 ppm, cadmium G5: 0.08 ppm, lead G4: 5.31 ppm. The greatest harvest value as g/m2 was obtained from zeolite only group G2 with 273 while the lowest was obtained from Compost only group G3 with 113 g/m2, obviously showing the effectiveness of zeolite only application moreover, also thinking that better results may get if the present study run for longer period.
Show more [+] Less [-]Measuring the Efficiency Profile of Crop Production in Traditional Rainfed Sector of North Kordofan state, Sudan. Full text
2017
Ibrahim Elnour Ibrahim | Ahmed Mohammed Morakah
The main objective of this study was to measure and analyzes economic efficiency of crop production in North Kordofan State. Secondary objectives included: estimate technical, allocative and economic efficiency and construct efficiency profile determination and the effect of socio-economic factors behind inefficiency. Primary data was collected by a structured questionnaire following stratified random sampling technique from 205 farmers, while secondary data was collected form relevant Institutional sources. The stochastic frontier production and cost function model analysis was used to estimate the technical, allocative and economic efficiency of producing crops. The predicted technical efficiency and economic efficiency are the basis for estimating allocative efficiency of farm. Results indicated that the mean technical efficiency of sorghum, millet, groundnuts and sesame were 0.57, 0.73, 0.53 and 0.74, respectively. The mean allocative efficiency of sorghum, millet, groundnuts and sesame production were 0.84, 0.83, 0.92 and 0.90, respectively. The mean economic efficiency of sorghum, millet, groundnut and sesame were 0.48, 0.62, 0.49 and 0.67, respectively. Farmers who have credit access are more technically efficient than those who have no credit access.
Show more [+] Less [-]Antibiotic Resistance Case Study: Enterobacteriaceae isolated from Batlama Creek in Giresun, Turkey Full text
2017
Tamer Akkan
Enterobacteriaceae were isolated from the freshwater of the Batlama Creek in Giresun, to measure their resistance levels against to antibiotics. A total of 9 antibiotics disc were applied for the resistance test. Antibiotic resistances of all isolates were at percentages for ampicillin (75%), erythromycin (64%), nalidixic acid (48%), tetracycline (39%), amikacin (34%), cefazolin and chloramphenicol (33%), cefuroxime (32%) and cefotaxime (23%), respectively. The highest resistant strain was resistant against to 9 antibiotics, while the weak resistance of 16 isolates were sensitive to all antibiotics. Moreover, Multiple antibiotic resistance index values were found to be higher than 0.2 for 77% of all isolates. High resistances of examined bacteria against to antibiotics indicated a dense and multisource pollution in the Batlama Creek. Consequently, a need for good surveillance programs to monitor antimicrobial resistance patterns in surface water bodies.
Show more [+] Less [-]