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Bazı Tescilli Nohut Çeşitlerinin Elek Analiz Değerleri Texte intégral
2021
Hamdi Özaktan
Ülkemizde nohut hem yaş hem de kuru olarak farklı süreçlerden geçerek tüketilmektedir. Tüketimde tercihen iri taneli nohutlar tercih edilirken 6 mm elek altı genellikle tercih edilmemektedir. Deneme, 2018 ve 2019 yılı vejetasyon süresince Erciyes Üniversitesi Tarımsal Araştırma ve Uygulama Merkezi, merkez deneme arazilerinde, kimyevi ve organik kökenli gübre girdisi kullanılmadan tesadüf bloklar deneme desenine göre üç tekerrürlü olarak yürütülmüştür. Denemede ülkemizde 1991-2013 yılları arasında tescil edilmiş 27 adet nohut çeşidi kullanılmıştır. Bu bağlamda araştırmada Kayseri ekolojik koşullarında herhangi bir gübre girdisi olmadan elde edilen 27 adet nohut tanelerinin 9 mm, 8 mm, 7 mm ve 6 mm elek üstü ile 6mm elek altı değerlerinin belirlenmesi amaçlanmıştır. Sonuç olarak her iki yılda da çeşitlerin ortalama değerleri yönünden 8 mm elek üstü değer birinci yıl %41,21 ikinci yıl %35,41 en yüksek olurken, ikinci olarak 7 mm elek üstü değerleri olmuştur.
Afficher plus [+] Moins [-]In-vitro antioxidant and oxidant properties of Centaurea rigida Texte intégral
2021
Eylem Kına | İmran Uysal | Falah Saleh Mohammed | Muhittin Doğan | Mustafa Sevindik
Many different natural materials are used in complementary medicine. Among natural products, herbal materials are used quite a lot. Centaurea rigida Willd. was used as material in this study. The antioxidant and oxidant potential of the plant was determined. The aerial parts of the plant sample were extracted with ethanol in a soxhlet device. Antioxidant and oxidant potentials were measured with Rel Assay kits. As a result of the studies, the total antioxidant value of the plant was determined as 3.522±0.166, the total oxidant value as 15.424±0.281 and the oxidative stress index as 0.440±0.020. It was determined that the plant has antioxidant potential, but its oxidant values are high. As a result, it was determined that C. rigida could be used as a natural antioxidant source.
Afficher plus [+] Moins [-]Evaluation of Antimicrobial Effects of Four Selected Marine Macroalgae from Iskenderun Bay Texte intégral
2021
Selin Sayın | Betül Aydın | Burcu Ak Çimen | Leyla Açık
In the present study, the seaweeds belong to Phaeophyaceae (Cystoseira elegans Sauvageau 1912, Cystoseira amentacea (C.Agardh) Bory 1832, Padina crassa Yamada 1931) and Florideophyceae (Corallina elongata J.Ellis & Solander 1786) collected from nearby Iskenderun-Turkey of Mediterranean Sea were detected for their antimicrobial activities against seven bacterial strains (Escherichia coli ATCC 35218, Bacillus cereus NRRL B-371, Staphylococcus aureus ATCC 25923, Pseudomonas aeruginosa ATCC 27853, Klebsiella pneumoniae ATCC 13883, Salmonella typhimurium ATCC 14028, Proteus vulgaris RSKK 96029). The antimicrobial activities were expressed as minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs). According to the results obtained from MICs and MBCs values of the extracts on pathogenic microorganisms were between 0.78 to 50 mg/mL. The lowest MICs and MBCs values were recorded for C. elegans extract against B. cereus with a MIC value of 0.78 mg/mL. These results suggest that secondary metabolites of brown and red algae are important sources that could be used as broad spectrum of biological and pharmaceutical activities.
Afficher plus [+] Moins [-]Direct Seeded Rice and its Prospects in Nepal: A Review Texte intégral
2021
Amrit Sharma | Shaurav Sharma | Pankaj Kumar Yadav | Bibek Sodari
Direct Seeded Rice (DSR) is an alternative cultivation technique to the conventional Transplanted Rice (TPR). In this method, seeds are directly sown to the field without the necessity of nursery raising and transplanting. DSR can generally be divided into dry-DSR (sowing dry seeds in dry soil), wet-DSR (sowing pre-germinated seeds in moist soil) and water-seeding (sowing dry or pre-germinated seeds in standing water). This helps in saving water alongside the labour and results in early harvest due to quick crop establishment. DSR is proved to be sustainable and eco-friendly since it emits less methane than in TPR. However, there are few constraints associated with DSR such as weed infestation, crop lodging and nutrient loss. If these major issues are fixed, DSR can result in greater economic returns as compared to TPR. In absence of puddling, the soil structure can be maintained which leads to greater yields of succeeding crops. This technique has been successfully practiced in many countries like Srilanka, Malaysia and USA. In developing nations like Nepal, irrigation and labour constraints can be tackled by adopting direct-seeding for rice cultivation.
Afficher plus [+] Moins [-]Development of Mathematical Functions to Predict Deflection of Radial and Bias Tractor Tires on Rigid Surface Texte intégral
2021
Firat Komekci | Adnan Degirmencioglu
The objective of this study was to develop mathematical functions to predict deflection for radial and bias tires. In order to develop the models, the data were obtained from the tire manufacturing companies and organized in Excel first and then transferred to Minitab® for stepwise regression analysis. The variables considered in the study were inflation pressure, load and tire width and overall diameter. Tire width (w) and overall diameter (d) was considered in a multiplication form. The tire deflection models in two different form (linear and non-linear) were developed for both, radial and bias tires. The model selection was achieved by three different criteria and % differences between the measured and predicted data. Based on the results of applying model selection criteria, the models for radial and bias tire in non-linear form were found to be adequate for predicting the tire deflection. The results from the stepwise analysis indicated that the load on tire was the predominant variable in the models and made the highest contribution to the prediction functions. The developed models were verified against to published literature data and found a good agreement.
Afficher plus [+] Moins [-]Determination of Antimicrobial and Antioxidant Activity of Alchemilla alpina L. Texte intégral
2021
Şule İnci | Ayşe Eren | Sevda Kirbağ
Alchemilla genus, which belongs to the Rosaceae family, is a medicinal plant used for various purposes among the people. Species of this genus are known in Turkish folk medicine as lion claw or hazelnut grass. Especially, they are used mainly women’s illnesses, in gastritis, anti-inflammatory, as carminative, and in the treatment of wound. Besides the antimutagenic effect of Alchemilla alpina L., its above-ground parts are used for antimycotic purposes in the form of tea or oral care water. In this study, it has been aimed to determine the antimicrobial effect of the above-ground parts of Alchemilla alpina extracts obtained from methanol, ethanol and chloroform and the antioxidant activity of different concentrations of the extract obtained from methanol. The antimicrobial activity of methanol, ethanol and chloroform extracts of the above-ground parts of A. alpina has been determined according to disk disc diffusion method. In the results obtained have been showed that these extracts inhibited the growth of some bacteria (Staphylococcus aureus ATCC25923, Escherichia coli ATCC25322, Klebsiella pneumoniae ATCC700603, Bacillus megaterium DSM32) and yeasts (Candida albicans FMC17 and Candida glabrata ATCC66032) at different rates (8-23 mm). The antioxidant activity of different concentrations (1.25, 2.5, 5 and 10 mg/ml) of the above-ground parts of A. alpina extract obtained from methanol has been determined according to the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity method. In the results obtained, it has been observed that the effect of removing DPPH radical of A. alpina increased depending on increasing concentrations.
Afficher plus [+] Moins [-]Trade Effects of Geographical Indications on Turkish Agricultural Products and Foodstuff Texte intégral
2021
Burçak Müge Vural
Environmental concerns together with social and ethical issues raise consumers’ interest in sustainable production and consumption practices. With rising trends of fair trade and high popularity of organic and local production in recent years, the demand for geographical indication registration has also increased by agricultural producers as a way of transmitting further information to raise reputation of their products. This research aims to assess the impact of geographical indications on export performance of Turkish agricultural products and foodstuffs. Findings reveal that geographical indications increase export revenues. Results communicate an important message to policy makers to promote the protection of geographical indications.
Afficher plus [+] Moins [-]Advantages of Grain Legume-Cereal Intercropping in Sustainable Agriculture Texte intégral
2021
Aybegün Ton
Sustainable agriculture bases on certain ecological principles in both of crop production and livestocks. Legume-cereal intercropping in sustainable agricultural cropping system is the most applied in the intercropping systems in the World. Legume-cereal intercropping have many benefits such soil conservation, weed control, animal feed and effective land use, greater yield and quality in low-input agricultural system. Land use efficiently is available to evaluate the advantages of intercrop in sustainable agriculture to meet food demand due to increase in population. Amount of N2 fixed by intercropped legume is less compared to mono crop legume due to competition with cereal. However, proportion of total N derived from fixation (Ndfa %) in legume intercropped with cereal was greater than mono crop legume. N-transfer from the legume to neighbouring plant may be possible, but it can be affected by a lot of factors. The principal aim of present study is to define advantages of cereal-grain legume intercrops in sustainable agriculture.
Afficher plus [+] Moins [-]Crop Production, Livestock Production and Economic Growth in Botswana (1990-2017): An Application of ARDL Model Texte intégral
2021
Mufaro Andrew Matandare | Patricia Masego Makepe | Lekgatlhamang Setlhare | Jonah Bajaki Tlhalefang
There are few studies in Botswana which have examined the relationship between agriculture and economic growth. The uniqueness of this study is grounded in investigating disintegrated agriculture components into crop production and livestock production and investigating their nexus with economic growth. This study estimated the short and long term effects between crop production, livestock production and economic growth in Botswana for the period 1990 to 2017. The Auto-Regressive Distributed Lagged (ARDL) bounds testing approach was employed to investigate the stated relationship. Study findings from the ARDL bound testing approach confirm evidence of a long-run equilibrium relationship between crop production, livestock production and economic growth. Results indicated that livestock production has a positive and significant impact on economic growth both in the short run and long run. On the other hand crop production has a positive and significant impact on economic growth only in the long run. Efforts towards supporting agricultural sector growth should be emphasized to promote agricultural sector productivity in a bid to forge a move away from dependence on imports of food in Botswana. To enhance economic growth, in both the short run and long run, the government of Botswana and all relevant stakeholders should invest in and promote livestock production. In the long term, policies that foster crop production are essential for economic growth.
Afficher plus [+] Moins [-]Effects of Cold and Hot Infusions on Antioxidant Activities of Rosehip Tea Bag Texte intégral
2021
Zeynep Akar | Erza Orhan | Seçil Durmuş
In this study, the antioxidant activity values of infusions at different temperatures of the commercially sold rosehip tea bag. To determine the effect of different infusion temperatures on antioxidant activity, 7 different temperatures (0, 15, 30, 45, 60, 75, 90°C) also including cold infusions temperatures were selected. Infusions of the rosehip tea bags were prepared with packaged drinking water for 5 minutes (recommended time in tea bag packaging) at these temperatures. Antioxidant activity values of the infused extracts were determined by antioxidant activity determination methods: TPC (Total Phenolic Compound), CUPRAC (Cu (II) Ion Reducing Antioxidant Capacity), FRAP (Iron (III) Ion Reducing Antioxidant Power) and ABTS•+ (2.2-azinobis- (3-ethylbenzothiazoline-6-sulphonic acid)) radical scavenging assay. According to the results obtained by the antioxidant determination methods, the highest and lowest activity values for TPC, FRAP and ABTS were measured at 90°C and 0°C, respectively, and a positive correlation was found between temperature and antioxidant activity values. Contrary to the activity values determined in these methods, in the CUPRAC method, the highest and the lowest activity value was measured at 45°C and 90 °C, respectively. As determined in the CUPRAC method, infusions of rosehip tea at low temperatures may provide an advantage in terms of the solubility of some phenolics that can be denatured at high temperatures. In addition, rosehip tea infusions at lower temperatures will contribute to lower energy costs.
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