Уточнить поиск
Результаты 271-280 из 653
The Effect of Drying Temperatures on Effective Diffusion-Activation Energy, Quality and Drying Kinetics of Rosehip Fruit of “Star” Type Полный текст
2022
Burcu Aksüt | Hakan Polatcı
Rosehip fruit, which is widely and naturally grown in many European countries as well as in Rosehip fruit, which is widely used in Turkey as well as in European countries and grows naturally, is a very rich species in terms of vitamin C value. Due to its benefits to human health, its consumption is increasing and its use in different forms is becoming widespread. In this study, the colour, effective diffusion-activation energy, phytochemical properties and thin-layer drying patterns of rosehip fruit of the ‘Yıldız’ variety were investigated after drying in a convective dryer at different temperatures (40, 50, 60 and 70°C). In the study, it was determined that 70°C temperature was statistically more suitable in terms of measured and calculated colour values. It has been determined that the effective diffusion value is affected by the drying temperature and the increase in temperature also increases the effective diffusion value. It has been determined that the effective diffusion value varies between 1.35×10-7-5.92×10-6 m2/sec. The activation energy value of dried rosehip samples was calculated as 69,41 kJ/mol. When the chemical analysis values were examined, when the SÇKM, total phenolic, total antioxidant substance and vitamin C values were evaluated together, it was found that the most appropriate drying temperature was 70°C statistically. Among all drying models, Midilli-Küçük and Yağcıoğlu models (R2: 0.9999) estimated the drying data best.
Показать больше [+] Меньше [-]Estimation of Fertility Status of Agricultural Soils in Ağrı/Eleşkirt Region Полный текст
2022
Tülay Dizikısa | Nesrin Yıldız | Müdahir Özgül | Fazıl Hacımüftüoğlu
This study was conducted to determine the fertility potential of the agricultural soils of Ağrı/Eleşkirt region and the levels of basic plant nutrients. Texture classes of soil samples of the research area was; loam, clay loam and sandy clay timbre, 55% loam, 40% clay timbre and 5% sandy clay. The pH of the soils varies between 6.50-7.57, with an average of 7.14 neutral and CEC values between 17.3-29.5 cmol/kg. Lime content is 3.95-12.10%, mean of 7.11%; 30% are limy and 70% are medium limy, organic matter contents are 1.20-2.59%, average of 2%, 45% organic matter is considered low and 55% is medium. Their EC was between 0.14 and 0.43 dS/m, with an average of 0.21 dS/m; there is no salinity problem in the soils. Total N contents were 0.03-0.10%; 15% is very little, 65% is insufficient and 20% is sufficient, plant-friendly P, between 5.67-11.7 mg/kg; 20% is insufficient and 80% is sufficient; K content was 1.09-1.77 cmol/kg, an average of 1.45 cmol/kg is sufficient and excessive. The interchangeable Ca 7.90-9.90 cmol/kg is sufficient, with an average of 8.82 cmol/kg. Changeable Na, 0.87-1.56 cmol/kg, average 1.20 cmol/kg, normal level; plant Fe is sufficient in 12 of the 2.78 mg/kg to 6.90 mg/kg, 60% of the soils are sufficient and 40% are insufficient; Cu, available zinc (Zn) contents 0.29 to 0.78 mg/kg; 10% are sufficient and 90% have insufficient available Zn content; the available Mn level was insufficient in all soil samples. As a result, it was determined that at least half of the research area soils are in dire need of increasing the organic matter content, nitrogen fertilizer, partially phosphorus fertilizer and especially microelement fertilizers such as Zn and Mn. Therefore, it is recommended to eliminate the deficiencies with macro and micro elements in leaf or organo-mineral (micro-element-containing) fertilizers in light of economic and ecological planning by conducting correlation and calibration studies with plant response.
Показать больше [+] Меньше [-]Mineral Composition of Some Important Indigenous Savanna Forage Shrub Species in Ghana Полный текст
2022
Ziblim Abukari Imoro | Danquah Emmanuel | Ammal Abukari
This study compared the forage quality of Cajanus cajan, Stylosanthes mucronata, Tephrosia purpurea, and Securinega virosa in the savanna ecological zone of Ghana. The shrubs were cultivated using Randomized Complete Block Design (RCBD) and their growth were monitored. Leaf samples were hand-harvested at 7, 10, and 13 weeks after establishment, air-dried, pulverised, and used for laboratory analysis. Nitrogen (N), Phosphorus (P), Potassium (K), Calcium (Ca), and Magnesium (Mg) were determined. N, P, K, Ca and Mg contents among the shrubs ranged from 0.74 - 0.79%, 1.32 - 1.99%, 7.63 - 10.09%, 2.22 - 3.06 and 1.08 - 1.38%, respectively. Stylosanthes mucronata was significantly lowest in both P (1.318%) and K (7.63%), whilst Securinega virosa was significantly highest in K (10.09%). Among the three maturity levels, N, P, K, Ca and Mg contents ranged from 0.31 – 1.05%, 1.51 - 1.93%, 7.46 - 10.43%, 2.63 - 2.67% and 1.28 - 1.30%, respectively. Except for P, which was significantly lowest at 10 weeks after establishment (WAE), N and K were significantly highest at 7 WAE and lowest at 10 and 13 WAE, respectively. It was observed that the shrub species and maturity levels influence the nutrient content of forage shrubs.
Показать больше [+] Меньше [-]Effects of Enrichment on Amino Acid Profile, Mineral Composition and Anti-Nutritional Factors of Lafun Powder Полный текст
2022
Uche Anyaiwe | Mattew Oluwamukomi | Taiwo Aderinola | Tayo Fagbemi
‘Lafun” was enriched with soy protein supplements (curd or residue) during the mashing before drying at 10%. The amino acid result indicated that enrichment improved the amino acids contents as well as the protein quality of the products. While enrichment generally improved the mineral element composition, enrichment with the residue significantly improved the mineral composition when compared to enrichment curd. That the products were hygienically produced was confirmed by the non-detection of heavy metals which may suggest it safety for human consumption. Condensed tannins, phytate, oxalate, hydrogen cyanide and trypsin inhibitor were tested as possible anti-nutritional factors in the product and the values obtained were within safe level and correlated with those reported in previous or similar studies. It was concluded that enrichment with soy curd/residue is a safe and viable means to improve the nutritional benefits derivable from “Lafun” especially for those that ‘Lafun” is a major staple.
Показать больше [+] Меньше [-]On-Farm Adaptation to Climate Change: Assessment of Effects of Groundwater-Based Deficit and Supplementary Irrigation on Soil Quality Under Semi-Arid Ecosystems Полный текст
2022
Sani Abubakar Mashi | Amina Ibrahim Inkani | Abdu Yaro
Agriculture is one of the sectors most affected by climate change, especially through the reduction in the number of rainy days in semi-arid areas, which require deficit supplementary irrigation (DSI) to minimise crop failures. Few studies have utilised soil quality indices (SQIs) to evaluate the quality changes of soils under DSI practices in semi-arid agricultural ecosystems. This paper examines the effects of DSI activities on soil quality in the Ingawa area of Nigeria’s semi-arid region. Plots subjected to different years of DSI (3, 5, 6, 8, 10, 11, 14 and 15 years) practices were chosen to serve as the controls. Soil samples were collected from each of the nine sites at depths ranging from 0 cm to 20 cm and 25 cm to 40 cm. The collected samples were analysed for physico-chemical properties. Soil quality change was estimated by computing percentage equivalence values that define the extent to which mean values of soils under DSI vary from those of the control. The results obtained show that the practices have caused significant negative changes in the levels of most of the properties considered, with significant deleterious effects on the selected physical and chemical indicators of soil quality to extents that might preclude sustainable agriculture on the soils. Potassium, organic carbon, organic matter, and some other essential nutrients needed for plant growth and soil stability have dropped a lot in irrigated farms compared to control farms, but salinization hasn't happened much. It was suggested that the right steps be taken to prevent the loss of important nutrients that crops need to grow well.
Показать больше [+] Меньше [-]Effect of Ginger (Zingiber officinale) Addition to the Diet on Performance, Serum Parameters and Meat Quality in Male Japanese Quails (Coturnix coturnix Japonica) Полный текст
2022
Seyit Ahmet Gökmen | Behlül Sevim | Barışcan Curabay | Kübra Ünal | Yusuf Cufadar | Yılmaz Bahtiyarca
This study was carried out to determine the effect of adding ginger powder at different levels (0.0, 0.5, 1.0, 2.0%) to the ration on performance, blood parameters and meat quality characteristics of male Japanese quails. 48 male Japanese quail (Coturnix coturnix Japonica) at 28 days of age were used in the study. The experiment was carried out for 21 days in 4 replications in a quail cage with 12 male Japanese quails in each of 4 treatment groups consisting of rations containing different levels of ginger powder. At the end of the experiment, the effects of adding different levels of ginger powder to male quail diets on the performance and serum parameters studied were statistically insignificant. Pre breast L*, a* and b*, thigh meat colours a* and b* values were not significantly affected by the treatments. However, pre-thigh L* values were significantly lower in the group fed with 2.0% ginger powder compared to the group fed with 0.5% and 1.0% ginger powder. Post breast b* value of the group containing 2.0% ginger powder in the diet was significantly higher than that of the group containing 0.5% and 1.0% ginger powder. It was observed the treatment group containing 2.0% ginger powder significantly decreased the pH value and TBA (thiobarbituric acid number) values at the breast meats when compared to the control group and the treatment group containing 0.5% ginger powder. According to the result of the study, it was observed that the addition of ginger powder to male quail rations did not affect performance and serum parameters, but the use of ginger powder at the level of 2.0% in the diet improved some meat quality characteristics.
Показать больше [+] Меньше [-]Social Media Usage Purposes of Farmers in Selçuklu District of Konya Province Полный текст
2022
Aysun Yener Ögür | Türkşan Karatekin | Fatma Doğançukuru
The aim of this study is to determine the purpose of social media usage of farmers in Selçuklu district of Konya province. The sample volume was determined as 80 according to the stratified random sampling method, with a 95% confidence interval and with a 5% margin of error. Factor analysis was conducted to determine the farmers’ social media usage purposes. Factor analysis was conducted on 19 independent variables and 3 independent variables were identified to determine the reasons for using social media. These variables are called professional development, socialization, and communication. The relationship between professional development, socialization, and communication variables and social media platforms was determined by linear regression analysis. For platforms used for socialization purposes, it was found that Facebook was statistically significant at 1% and Instagram was 5%. According to the regression analysis, platforms used for vocational development purposes, it was found that WhatsApp was statistically significant at 1% and YouTube was 5%. In social media, training, extension, projects, and promotions should be more widely supported in order to support the professional training of enterprises. In addition, pieces of training should be provided for enterprises to use social media platforms more effectively.
Показать больше [+] Меньше [-]Seroepidemiological and Clinicopathological Investigation of Canine Coronavirus Infection in Dogs, in Türkiye Полный текст
2022
Bilge Kaan Tekelioglu
Domestic and wild dogs of all ages and breeds are susceptible to Canine Coronavirus (CCoV) infections and be seen in Türkiye and amongst world. CCoV has recently been declared a zoonotic disease agent and the eighth pathogenic human coronavirus. This study was conducted on 143 naturally infected dogs with gastroenteritis which were not vaccinated against CCoV in Türkiye in 2015-2020. The data of dogs were analyzed seroepidemiologically, clinicopathologically and statistically. CCOV antibodies in serum and CCOV antigens in stool were detected by ELISA and lateral immunochromatography. The rising CCoV IgG antibody titers were detected at all dogs and were as follows; 64 ng/L in 81 (81%) dogs. CCOV and Canine Parvovirus (CPV) antigen were detected together in the stool of the 41 (28.7%) dogs. As a result, it was concluded that the CCOV agent is in circulation among dogs living in Türkiye. CCOV and CPV can cause co-infections and increased mortality. Although infection can be seen in dogs of all ages, it can be seen more frequently in dogs younger than 1 year of age, and especially in dogs younger than 6 months, and can cause enteritis, low hemoglobin, erythropenia, lymphopenia, leukopenia, thrombocytopenia, and hypoproteinemia.
Показать больше [+] Меньше [-]Determination of Sustainability Indicators of Nut Farms: The Case of Pistachio Полный текст
2022
Belma Doğan Öz | Gamze Saner
The aim of this study is to determine the indicators used to determine the sustainability levels of nut farms and to establish a set of indicators that can be used to measure the level of sustainability of pistachio farms, based on the literature review. As a result of the literature review, among the indicators commonly used to measure agricultural sustainability, a total of thirty sub-criteria were identified, including fifteen sub-criteria for the economic aspect (farm size, yield, etc.), six sub-criteria for the environmental aspect (pesticide, fertilizer, water, energy usage, etc.) and nine sub-criteria for the social aspect (farmer’s age, education, etc.) which can be used in evaluating the sustainability of pistachio cultivation. According to this study's findings, although the theoretical principles, dimensions, and goals of agricultural sustainability are globally adaptable, the applicability of the indicators may vary between regions and countries due to geographic, climatic, and socio-cultural differences. Therefore, the sustainability assessment process requires special attention. Sufficient knowledge and expertise are required in setting goals, selecting indicators, and verifying indicators.
Показать больше [+] Меньше [-]Phytochemical Profile and Antioxidant Activities of Aqueous Extract of Moringa oleifera (Lam) Collected from DR Congo and Kenya Полный текст
2022
Valence Bwana Mutwedu | Albert Wafula Nyongesa | Jafred Mulama Kitaa | Jemima Achieng Oduma | James Mucunu Mbaria
Moringa oleifera Lam. is one of the most used plants in traditional medicine because of its high antioxidant properties. The antioxidant value, nonetheless, depends on locality where the plant is grown as well as specific parts on the plant. In this study, a phytochemical and antioxidant activity comparison of M. oleifera leaves, seeds and barks were carried out. Fresh leaves, seeds and barks were collected from 2 to 3 years old M. oleifera trees of Bukavu city of South Kivu province in DRC and Masii village of Machackos County in Kenya. A total of 300g of each dried sample powder was mixed with 700 mL of distilled water. Qualitative and quantitative assessment of alkaloids, saponins, phenols, flavonoids, glycosides, terpenoids and tannins were performed following standard methods while the antioxidant activity was assessed using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. Results indicate that only alkaloids were absent in leaves from Kenya and DRC while phenols, flavonoids and tannins were absent in barks. Glycoside in seeds from DRC had the highest concentration (6.17%) followed by alkaloids in seeds from Kenya (5.56%). There was low concentration of terpenoids and flavonoids in all samples compared to other compounds. The highest extract yield was found in leaves from DR Congo (22.5%) and seeds from Kenya (20%). At the highest concentration (10 µg/mL), leaves from Kenya (88.29±1.12 µg/mL) and DRC (80.17±3.59 µg/mL) had the highest percentage inhibition of reactive oxygen-free radicals but lower than the reference standard (92.63±2.76 µg/mL). Leaves from Kenya (23.59 μg/mL) and DRC (28.67 μg/mL) had the highest IC50 compared to mean values of seeds and barks from the two countries. M. oleifera leaves, especially from Kenya, are recommended as a satisfactory antioxidant but can be substituted with seeds and/or barks in order to alleviate the use of leaves which are overused these days.
Показать больше [+] Меньше [-]