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Production of Vitamin B12 by Propionic Acid Bacteria and Investigation of Effective Parameters
2022
Hayriye Göknur Ağca Küçükaydın | Göksel Tırpancı Sivri | Ömer Öksüz
Propionic acid bacteria (PAB) are extremely important because of the metabolites they produce (vitamins, propionic acid, conjugated linoleic acid, and bioactive peptides). Nowadays, the increasing interest in healthy nutrition has led to the formation of the concepts of probiotics, postbiotics and functionality with studies. Vitamin B12 is one of the postbiotics produced by PAB and is known to be beneficial for human health. Due to its coenzyme feature, it plays a key role in the body process, as well as shows anti-inflammatory properties. The recommended dietary intake of vitamin B12 for adults is 4 μg/day. Although it is highly found in meat products, it is known that the bioavailability of B12 in dairy products is higher. Fermented dairy products, especially products that contain PAB in their natural microflora, are good tools for the production and intake of vitamin B12. In this study, the factors affecting the microbial production of vitamin B12 were examined.
显示更多 [+] 显示较少 [-]Detection of Burnt Areas by Remote Sensing Techniques: Antalya Manavgat Forest Fire
2022
Orhun Soydan
In this study, the forest fire that occurred in Manavgat district of Antalya on 28 July 2021 and lasted for 15 days was analysed by remote sensing techniques using Landsat 8 satellite images. Satellite images of the study area dated July 2021 before the forest fire and August 2021 after the forest fire were obtained. Burnt areas were identified using data’s such as Normalized Burned Ratio (NBR) and Normalized Vegetation Index (NDVI) indices and Difference Normalized Burned Ratio (DNBR) and Difference Normalized Vegetation Index obtained by using the differences of these indices. The maximum similarity algorithm of pixel-based controlled classification was also applied to the data set. The area destroyed by burning after the forest fire was tried to be calculated with these two indexes. It was investigated whether the results of three different methods were compatible and consistent with the results of the General Directorate of Forestry. Although there are differences between the results, it was determined that the selected method and the materials used were suitable for such studies.
显示更多 [+] 显示较少 [-]Comparative Structural Analysis of Heavy Metal ATPases in Arabidopsis thaliana, Arabidopsis halleri, Brassica rapa, and Brassica juncea
2022
Abdulrezzak Memon | Nuriye Meraklı
Arabidopsis thaliana has eight genes encoding members of the type P1B heavy metal–transporting ATPase, subfamily of the P-type ATPases. We focused our study on four ATPases, mainly HMA1, HMA2, HMA3, and HMA4, which are closely related and most similar in their sequences. We carried out the bioinformatics analysis of these metal ATPases and obtained their structure in A. thaliana, A. halleri, and the other heavy metal accumulators in Brassica spp. A. thaliana is a model plant for research because of the duplications and other evolutionary events. These evolutionary events provided a chance to elucidate their regulation and function in the cell. All previous bioinformatics analyses have given some information about their structure, but not much work has been done on their structural components and interactome analysis. Experimental determination of 3D structures is essential to understand better these proteins’ function, which is crucial for the proper functioning of all plant cellular processes. Especially, docking sites and domains need to be worked out to understand the role of these transporter proteins and their interaction in plant cells. These bioinformatic analyses will help the researcher understand these ATPases’ role in detoxifying the toxic metals from the cells of accumulator plants. Further research on gene cloning, gene expression, and generating new accumulator plants for phytoremediation is needed to reclamation polluted soils from toxic heavy metals.
显示更多 [+] 显示较少 [-]Comparison of Some Quality Parameters in Fresh and Dry Samples of Morus Rubra Fruits
2022
Ala Asi Mohammed Al-Salihi | Mehmetcan Olgaç | Emircan Dinçer | Hakan Polatcı | Onur Saraçoğlu
In Turkey, three species of mulberries, white (M. Alba), black (M. Nigra), and red-purple (M. Rubra) are grown commonly. These widely can be consumed fresh as well as dry. However, its rapid post-harvest decay raises major concerns about the sustainability of the fruit for both food and economic purposes. In this regard, besides the fresh consumption of black mulberry fruit, it can consume as dried it also offers an alternative way. In this study, it was aimed to compare some quality parameters in fresh and dry samples of Morus rubra fruits grown in Tokat. It was applied different temperatures to Morus rubra fruits that at collected in two different maturity levels (semi-ripe and full-ripe). In the drying process, mulberry fruits were dried in a hot air dryer at 40, 50, 60, and 70°C. Total phenol, Total phenol, total monomeric anthocyanin, total antioxidant capacity, colour values (L, a, b) chroma, hue (ho), and browning indices values will be measured in fresh and dried products. In addition, different mathematical models will be tried by constantly noting the weight drops of the products at certain time intervals and determining which mathematical model will best predict the drying kinetics
显示更多 [+] 显示较少 [-]Effect of Different Brewing Methods on Some Physicochemical Properties of Green Tea (Camellia sinensis)
2022
Canan Göksu Sürücü | Nevzat Artık
Different brewing methods can lead to changes in the physicochemical properties of green tea. In this study, the physicochemical properties of green tea brewed with different amounts (5, 7.5 and 10 grams) and times (5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, and 60 minutes) were investigated. Green tea produced by Çaykur was used in the study. Mineral analysis of green tea samples was performed with ICP-OES, and color analysis was performed with Minolta Spectrophotometer. The antioxidant activity was assessed using the DPPH method and the total phenolic content was determined using the Folin–Ciocalteu method. In terms of mineral content, it was determined highest levels of mineral content (mg/kg) for Al, Ca and Mg (10 g-25 minutes); Fe, Mn and Na (10 g-25 minutes); and B (10 g-50 minutes) as 16.005, 4.099, 24.075, 0.120, 13.855, 1.320 and 0.164, respectively. It was determined lowest levels of mineral content (mg/kg) for Al, Ca, Mg, and Mn (5 g-5 minutes); B and Fe (5 g-10 minutes), and Na (5 g-15 minutes) as 2.756, 1.193, 3.324, 1.23, 0.025, 0.002 and 0.48, respectively. In terms of color, it was determined that the lowest and highest L* values are 39.97 (10 g-45 minutes) -54.23 (5 g-35 minutes), lowest and highest a* values are -2.24 (5 g-5 minutes) (-4.70) (7.5 g-35 minutes) and lowest and highest b* values are 4.91 (5 g-5 minutes)- 23.98 (10 g-60 minutes). The antioxidant activity value (inhibition %) in green tea was found to be the range of 28.51 % (5 g, 45 minutes)- 47.95 (10 g- 40 minutes), and the total phenolic content (mg GAE/mL) was found to be the range of 15.99 (5 g, 5 minutes)- 35.61 (10 g, 15 minutes). The findings determined that green tea brewed with different amounts and times showed statistical differences in terms of color, mineral content, antioxidant activity, and total phenolic content.
显示更多 [+] 显示较少 [-]Analytical Approach to The Spice Consumption Pattern of Consumers: Example of Central Counrty of Tokat City
2022
Esra Kaplan | Arslan Zafer Gürler
In the study, it is designed to be useful and appropriate to benefit from the purchased items in the Central District of Tokat. Proportional sampling method is interviewed with 384 views. By applying the chi-square test to the data set, correlation with the highway was made. Statistically, it's pretty affordable in price, from products purchased from education, age-related sales, to unfavorable prices. What was reached in the study; discounts, vegetation, and what may be of importance to decision makers.
显示更多 [+] 显示较少 [-]Comparison of University Students' Perceived Stress Levels in terms of Body-Mass Index Categories and Gender
2022
Burcu Köksal
The main purpose of this study is to compare the perceived stress level of university students in terms of body-mass index categories and gender. 235 university students (183 female, 53 male) between the ages of 18-40 participated in the study. Participants were selected from six different departments of six universities by convenient sampling. In the study, a personal information form asking about university, department, age, disease status, drug use, weight, height and gender, and a perceived stress scale were used as data collection tools. While body mass index (BMI) categories and gender were determined as independent variables in the study, perceived stress level was determined as dependent variable and the data were analysed with a one-way ANOVA test. The findings revealed that there was no statistically significant difference in the perceived stress levels of the participants in terms of gender and body mass index categories. However, for one factor of the stress scale (readiness to cope with stress), participants in the normal body mass index range reported significantly less stress than participants in the obese body mass index range. The findings will be discussed in the light of the literature.
显示更多 [+] 显示较少 [-]Overview of Agrochemicals Application Practices on Tomato Farm by Smallholders at Koka, Meki and Ziway, Ethiopia
2022
Dereje Haile | Bizuayehu Tesfaye | Fassil Assefa
Promoting the agricultural sector with up-to-date technologies and inputs is convenient to enhance productivity. Production intervention is needed by introducing and adopting proper agronomic practices. Improved agricultural technologies increase production, quality, sustain food security, economic development and natural resource conservation. Koka, Meki and Ziway are known for their vegetable production as well as intensive agrochemicals consumption. Agrochemicals are applied on farm to enhance soil fertility, reduce pathogens, and induce plant growth. Tomato is one of the main commercial cash crops in these areas. Most commercially productive tomato varieties are highly sensitive to disease, vulnerable to nutrient deficiency, and other abiotic stress that requires rigorous agrochemical inputs. Ethiopian tomato production is very low due to various contributing factors including lack of improved varieties, diseases, pests, poor farming system, soil fertility maintenance as well as poor irrigation system. Farmers in the study areas applied inaccurate agrochemicals dose, rate, and application schedule that foster repeated spray. Intense agrochemical application leads to adverse environmental and health impacts due to deposit of toxic chemicals, residue leakage to water bodies and air pollution. It is important to practice proper agricultural inputs, reduce hazardous chemical residues, protect humans, other beneficial organisms and the environment. Moreover, developing IPM technology is recommended for better healthy agricultural production and sustainability.
显示更多 [+] 显示较少 [-]Growth Performances of Shibot Fish (Tor grypus) Fry Fed with Diets Containing Different Protein Levels
2022
Suat Dikel | Ilgın Özşahinoğlu | Mustafa Öz | İbrahim Demirkale
In the study, the growth performances of the Shibot fish (Tor grypus) with an average weight of 2.38 g were evaluated by feeding them with 3 different protein-containing feeds for 45 days. In order to create these evaluations, the experimental groups were designed as G1 (33%), G2 (37%) and G3 (41%) fed with different protein levels. Effects on body weight gain (BWG), Feed conversion rate (FCR), Specific growth rate (SGR), Survival rate, Economic conversion rate (ECR) and Economic profit index (EPI) as growth parameters has been researched. At the end of the study, the offspring reached a weight of 3.42±0.16 g, 4.17±0.06 g and 4.50±0.02 g, respectively. G3 and G2 group individuals showed similar performance in terms of end-trial FCR, EPI and ECR.
显示更多 [+] 显示较少 [-]Physicochemical Properties of Honey Produced at Different Altitudes
2022
Yaşar Erdoğan | Metin Turan
The types and densities of honeyed plants vary depending on the altitude. This causes the amount and Physicochemical structure of honey produced in apiaries of different altitudes to change. In this study, honey harvest from the honeybee colonies placed at different altitudes in the same geographical region was carried out in the first week of September. Standard laboratory methods were used to determine some physicochemical properties of the honey samples. Some of the minimum and maximum average values obtained as a result of the analysis of honey samples; moisture 14.70% and 18.60%, free acidity 20.50 meq/kg and 25.30 meq/kg, pH 3.20 and 4.30, EC 0.22 and 0.44 mS/cm, fructose 32% to 45%, glucose 0.10% to 0.18%, sucrose from 0.66% 1.80%, maltose ranged from 0.66% to 1.80%. Also, HMF ranged from 1.80 mg/kg to 3.50 mg/kg, proline 530.00 mg/kg and 710.00 mg/kg, Density from 1.44 g/cm3 to 1.49 g/cm3, Invertase 20.30 U/kg-28.50 U/kg, Diastase activity 13.23-19.07 and Total phenolic content ranged from 76.00-94.00 g. It has been determined that the physicochemical structures of honey produced at different heights are statistically different from each other. This study aims to determine the effect of altitude difference on the quantity and physicochemical structure of honey.
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