خيارات البحث
النتائج 151 - 160 من 5,336
Evaluation of Hazelnut Husk as a Growing Medium in Primrose Cultivation النص الكامل
2024
Damla Bender Özenç | Kökten Öz
In this study, the effects of hazelnut husk on growth, quality parameters, and nutrient content of primrose were evaluated. For this purpose, thirteen different growing media were prepared by mixing fresh hazelnut husk (FHH) and mature husk wastes (MHH) with peat at different rates. Some physical and chemical properties of the media and nutrient analyses were made for the nutritional status of the plants. The study was carried out in greenhouse conditions with four replications according to the randomized plot design. The aeration capacity and easily available content of the growing media is within the limit values, the medias with 50% FHH and MHH were prominent in terms of air-water balance. The effect of the medium on the aesthetic appearance, total shoot, leaf, and flower number of the primrose was not significant, but it was effective on flower weight, plant height, and root fresh-dry weight. In terms of plant root-shoot development, 30% FHH and 50% MHH were prominent. The media have caused significant differences in nutrient concentrations in primrose except for nitrogen, phosphorus, and copper. The leaf phosphorus concentration was high, nitrogen and potassium concentrations were within the limit value range, iron was sufficient, and manganese and copper were insufficient, while zinc was mostly lower than limit values. When all the data are evaluated, 50% ratios of hazelnut husks can be recommended in primrose cultivation and hazelnut husk can be evaluate in ornamental plant cultivation as a growing media.
اظهر المزيد [+] اقل [-]Farmers’ Knowledge on Agricultural Irrigation Programs: The Case of Altınekin District of Konya Province النص الكامل
2024
Enes Karaman | Mehmet Şahin
Climate change-induced droughts have various negative impacts on different sectors, especially on agricultural sector. Altınekin District, where the research was conducted, has the lowest precipitation in Konya Province, therefore is expected to be most affected by drought. For sustainable use of water resources, each stage of agricultural production should be carried out within the framework of a specific program. With this study, knowledge level of farmers engaged in irrigated agriculture in Altınekin district regarding irrigation and irrigation programs they applied were determined through a face-to-face survey. Present findings revealed that 38.7% of the participant farmers are aged 50 years and over and a large proportion of them (54.7%) are primary school graduates. Participant farmers were all (100%) using groundwater resources in agricultural production and 88% of them stated that they did not receive any training on irrigation. While 32% of the farmers participating in the survey stated that they had knowledge about the concept of irrigation program, 68% reported that they did not have any knowledge. Incorrect and improper practices regarding efficient use of irrigation water in the region, especially regarding the irrigation program, were identified and solutions were proposed for these problems.
اظهر المزيد [+] اقل [-]The Effect of Different Grape Varieties and Adding Different Ratios of Mustard Seeds on the Phenolic Compounds, Antioxidant Capacity, and Bioaccessibility Values of Hardaliye under In Vitro Digestion النص الكامل
2024
Ayşe Semra Aksoy | Mustafa Yaman | Muhammet Arıcı
Hardaliye, grape-based fermented beverage, rich in antioxidant phenolic compounds. Bioaccessibility and antioxidant capacity of bioactive compounds in hardaliye, produced using varying amounts of mustard seeds (1%, 1.5%, and 2%) with Merlot and Papazkarası grape varieties, were evaluated under in vitro gastrointestinal digestion conditions. After digestion, Merlot and Papazkarası samples with 2% addition of mustard seed showed significantly higher total phenolic compounds (TPC) (358.48±14.73 and 89.01±2.42 mg GAE/L, respectively) compared to other samples (P<0.05). 2% mustard seed added Merlot samples resulted in the highest 1,1-diphenyl-2-picrylhydrazyl (DPPH) and cupric reducing antioxidant capacity (CUPRAC) values (19.06±3.91 and 9.96±1.83 mmol TEAC/L, respectively) which differed significantly from other samples (P<0.05). The Merlot sample with 2% addition of mustard seed showed significantly higher TPC, total flavonoid compounds (TFC), DPPH, and CUPRAC bioaccessibility values compared to other Merlot samples (P<0.05). For Papazkarası samples with 2% mustard seed addition, significant differences were observed only in terms of TPC and TFC bioaccessibility values (15.87±2.30% and 15.27±1.29%, respectively) compared to samples with 1% and 1.5% mustard seed addition (P<0.05). The study demonstrated that the bioaccessibility of bioactive compounds in hardaliye can vary depending on the grape variety and to some extent, the use of mustard seed. This suggests that the food matrix and interaction with other food matrices in the environment can affect the stability and bioavailability of bioactive compounds during simulated digestion.
اظهر المزيد [+] اقل [-]Physicochemical Characterization and Butanol Impact on Canola and Waste Cooking Oil Biodiesels: A Comparative Analysis with Binary Biodiesel Blends النص الكامل
2024
Seda Şahin | Fatma Yılmaz
In this study, the physicochemical properties of canola and waste cooking oil biodiesels, as well as various binary biodiesel blends, were investigated according to TS EN 14214 and ASTM D 6751 standards. Critical parameters such as density, kinematic viscosity, cold filter plugging point (CFPP), calorific value, flash point, copper strip corrosion, water content, and ester yield were evaluated. The findings highlighted the notable density of C100 and W100 biodiesels, with the addition of butanol reducing density. While viscosity values adhered to standards, the addition of butanol was observed to decrease viscosity. CFPP values indicated compliance with standards only for C100 and C75W25. Flash points of C100 and W100 biodiesels met standards, but the addition of butanol to binary biodiesel blends lowered flash points. Copper strip corrosion values were determined to comply with standards for all fuels. Calorific values demonstrated the prominence of C100 and W100 biodiesels, with the addition of butanol observed to decrease calorific values in binary biodiesels. While water content favored canola biodiesel over waste cooking oil biodiesel, the addition of butanol to binary biodiesels increased water content. Regarding ester yield, C100 biodiesel exhibited the highest yield, and the addition of butanol to binary biodiesels increased ester yield. In conclusion, this study thoroughly analyzed the physicochemical properties of biodiesel and blend fuels, revealing the impact of butanol addition on these properties.
اظهر المزيد [+] اقل [-]Effect of Emulsifying Salts on Texture and Sensory Properties of Reduced Fat Kaymak النص الكامل
2024
Mustafa Öztürk | Aysen Can
Kaymak is a traditional Turkish dairy product with high fat and moisture, and low protein content. According to the Turkish Food Codex, Kaymak must contain at least 60% milk fat. Obesity is one of the most important health problems of our era, and there have been many initiatives to reduce the fat content of ready-to eat consumer products. In this study, the effect of emulsifying salts (trisodium citrate, disodium phosphate and tetrasodium pyrophosphate) on texture and sensory properties of reduced fat Kaymak (30% fat) was investigated. Emulsifying salts were used in the manufacture at two different concentrations (5 and 10 mM) and a reduced fat Kaymak without emulsifying salts was used as control. Manufacturing reduced fat Kaymak with 10 mM trisodium citrate and 5 mM tetrasodium pyrophosphate increased Kaymak hardness. Samples manufactured with 10 mM trisodium citrate exhibited the highest sensory quality, while Kaymaks manufactured with 10 mM tetrasodium pyrophosphate received lowest sensory scores. In conclusion, 10 mM trisodium citrate successfully improved textural and sensory properties of reduced fat Kaymak.
اظهر المزيد [+] اقل [-]Production of Functional Chocolate with Lycium Barbarum L. (Wolfberry) Additive النص الكامل
2024
İhsan Güngör Şat | Emine Takım | Halil İbrahim Binici
In this study, a new bitter chocolate with functional properties was produced by using different tempering temperatures with different ratios of wolfberry addition and physicochemical, antioxidant, textural and sensory properties of these chocolates were determined. It was observed that fruit ratios on bitter chocolate had a statistically significant (P<0.01) effect on DPPH, ABTS and hardness values, while there was no significant effect on total flavonoid amounts. It was determined that tempering temperature had a significant effect (P<0.01) on pH, reducing sugar, sucrose, total phenolic content (TPC), DPPH, ABTS, total flavonoids (TFC) and hardness values, while it had no significant effect on total dry matter and total sugar values. The rich total phenolic and antioxidant content of the added wolfberry fruit and its substitution for sugar improved the functional properties of the chocolate. As a result of the study, it was possible to introduce a value-added functional product with wolfberry additive to the market, thus pioneering the production of new products as well as the fresh use of the fruit.
اظهر المزيد [+] اقل [-]Effect of Different Acids and Salt Application on The Microbiota of Pickled Cabbage النص الكامل
2024
İlkay Turhan Kara | Duygu Alp Baltakesmez | Aynur Ay Tezcan | Emre Öztürk
Pickles, which are known to have many nutritional and health benefits, have been used as a nutritional supplement in many cultures in recent years. Lactic acid bacteria, in its natural microbiota of pickle, which have various probiotic properties such as increased natural resistance to infectious diseases in the gastrointestinal system, prevention of various infections, and reduction in cholesterol level are effective in this. In our study, various combinations of salt, vinegar and lemon acid were made to produce cabbage pickled and it was determined how it affected the natural microbiota during fermentation. When the results were evaluated in terms of the viability of lactic acid bacteria, the best results were obtained with 5.35 logarithms in the G2 produced using only 5% lemon juice from eight different groups, one of which was a control. In the G3 which was produced using 5% vinegar, this number was determined as 1.82 logarithms. At the end of fermentation, it was determined that the coliform groups in the experimental groups lost their viability. Yeasts were completed this process with an average of 1 logarithm. When all test groups were examined in terms of all microbiological results was showed that the production of 5% lemon juice G2 has optimally results in terms of growing LAB and inhibition the undesirable microbial groups
اظهر المزيد [+] اقل [-]Effects of Inoculation of Lactobacillus plantarum at Different Doses on Triticale (Triticosecale wittmack) Silage on Quality, Fermentation and Aerobic Stability Properties and Feed Value النص الكامل
2024
Hayrettin Çayıroğlu
This study was conducted to determine the effects of different doses of Lactobacillus plantarum (LP) inoculation into triticale silage on fermentation, quality, feed value, and aerobic stability. This study used three doses of LP bacteria strains (MF098786 strain) isolated from homemade pickles as inoculants. As LP dose, 1×106, 1×108 and 1×109 cfu/mL levels were used. The LP inoculation was applied by spraying onto by using a sterile injector at 1 mL per 1 kg material. The prepared silages were incubated for 60 d. The treatment groups in the study consisted of triticale control (TC), 1×106 (LP6T), 1×108 (LP8T) and 1×109 cfu/kg DM (LP9T) LP inoculated triticale. The LP inoculation of triticale silage improved silage fermentation, chemical and microbiological properties, silage quality, and feed value, and aerobic stability of the product, regardless of dose application. This application did not change the silage's organic matter, ash, and hemicellulose contents but decreased the crude fiber, neutral detergent fiber, and acid detergent fiber contents. While there was no significant change in color parameters in all silages, a decrease in the ultimate pH value, and improvement in Flieg score and RFV were detected. The LP inoculation into triticale silage increased the number of lactic acid bacteria and decreased the number of yeast in the silages. This application improved the total digestible nutrient and energy values of LP9T silage compared with other silages. When LP doses were evaluated within themselves, it was determined that all doses gave almost similar results in terms of the parameters studied. However, when the data obtained from the research are evaluated as a whole, LP inoculation at the level of 1×109 cfu/mL can be recommended to triticale silage, because of the positive effects of silage on total digestible nutrient, digestible energy, metabolizable energy, and net energy contents.
اظهر المزيد [+] اقل [-]Current Situation of Dam Lakes on Kızılırmak River in Türkiye with Fisheries Production Rights Leased النص الكامل
2024
Seher Dirican
The increase in the diversity of needs arising from population growth, technological development and globalization causes more use of limited natural resources and brings with it consequences such as wear and pollution of resources. This study focused on the dam lakes on the Kızılırmak River in Türkiye, whose fisheries production rights were leased. There are İmranlı, Yamula, Bayramhacılı, Hirfanlı, Obruk, Boyabat and Derbent dam lakes on which the right to produce fishery products are leased on Kızılırmak, which is the longest river within the borders of Türkiye. Among these, the most rented region is in the Hirfanlı Dam Lake. Sustainability of fisheries in these dam lakes on Kızılırmak River is important in terms of meeting healthy protein demand and socio-economic development. Fishing, which has commercial value in these dam lakes, provides both employment and significant economic contribution to the people of the province and district where they are located. In order to benefit from this potential in a healthy way, it has been concluded that it is very important to operate these dam lakes in a balance of protection and use. However, it is necessary to increase the incentives and support of fishermen especially in these fishing regions.
اظهر المزيد [+] اقل [-]Zeytinyağında Bulunan Mikroorganizmalar ve Kalite Üzerine Etkileri النص الكامل
2024
Alper Aydın | Başar Uymaz Tezel | Mustafa Öğütçü
Zeytinyağı, zeytin meyvesinden mekanik olarak elde edilen ve rafine edilmeden tüketilebilen en önemli bitkisel yağlardan biridir. Zeytinyağı, insan sağlığına faydalı olduğu bilinen yüksek oranda doymamış yağ asitleri ve antioksidan bileşikler içerir. Yeni üretilen zeytinyağı, zeytin posası parçacıkları ve sudan kaynaklanan mikro damlacıklar nedeniyle bulanık görünüme sahiptir. Bulanık görünüme neden olan katı partiküller ve su, bazı mikroorganizmaların canlılığını koruyabileceği bir ortam yaratır. Mikroorganizmaların bazıları zeytinyağının fiziko-kimyasal ve duyusal özelliklerini, yüksek enzimatik aktiviteleri sayesinde iyileştirirken, bazıları da zeytinyağının kalitesini bozar. Zeytinyağındaki mikroorganizma çeşitliliği, zeytin çeşidi, hasat yöntemi, işleme tekniği, depolama koşulları ve depolama süresi gibi faktörlere bağlı olarak değişebilir. Bu çalışmada zeytinyağında bulunan mikroorganizmalar ve bunların zeytinyağı kalitesine etkileri derlenmeye çalışılmıştır.
اظهر المزيد [+] اقل [-]