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Applied Fruit Science Erwerbs-Obstbau6
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Turkish Journal of Agriculture and Forestry5
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Journal of Molecular Structure4
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Notulae Botanicae Horti Agrobotanici Cluj-Napoca3
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Clean Technologies and Environmental Policy2
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Folia Horticulturae2
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Plants2
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African Journal of Biotechnology1
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Bioorganic & Medicinal Chemistry Letters1
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Bioorganic Chemistry1
Synthesis, biological properties, and acid dissociation constant of novel naphthoquinone–triazole hybrids
Nural, Yahya | Özdemir, Sadin | Demir, Bünyamin | Yalçın, Mustafa Serkan | Erat, Selma
A series of novel 1,4-naphthoquinone–triazole hybrids, N-(3-amino-1,4-dioxo-1,4-dihydronaphthalen-2-yl)-2-(4-R-1H-1,2,3-triazol-1-yl)acetamide, was synthesized by click chemistry in the presence of sodium ascorbate and copper(II) sulfate pentahydrate in 81–94% yield. Various biological properties of the synthesized compounds including DNA binding/cleavage, antioxidant, antibacterial and antifungal properties were evaluated. The DNA binding study was performed using dsDNA and G-quadruplex DNA. All of the compounds showed fluorescence increase in the presence of DNA, regardless of the structure. Up to 2.9 and 2.5 times fluorescence increase upon incubation with double stranded or G-quadruplex DNA was detected for 5f and 5g, respectively. The docking studies performed on dsDNA and G-quadruple...
Bioactive compounds and physical attributes of Cornus mas genotypes through multivariate approaches
Demir, Bünyamin
Cornelian cherry fruits are quite rich in bioactive compounds. Natural colour, rich flavonoids and anthocyanins and high antioxidant activity have made the fruits a natural drug. In the present study, antioxidant activity, total flavonoids and total phenolics of naturally growing 18 cornelian cherry genotypes with different phenotypic characteristics were determined. Size and shape parameters of the genotypes were also determined with the image-processing method; sphericity, elongation and shape index were calculated and shapes of two-dimensional fruit images were compared with elliptic Fourier analysis. Antioxidant activity, total flavonoid contents and total phenolic amounts of the genotypes were varied between 55.062 and 152.420 mmol TE · kg−1, 286.40 and 2,882.80 mg QE · kg−1, and 2,64...
Prediction of Physical Parameters of Pumpkin Seeds Using Neural Network
Demir, Bünyamin
The design of the machines and equipment used in harvest and post-harvest processing should be compatible with the physical, mechanical and rheological characteristics of the fruits and vegetables. In machine design for agricultural products, several characteristics of relevant products and seeds should be known ahead. Designers can either measure all these design parameters one by one, or they may use intelligent systems to estimate such parameters. Neural networks (NNs) are new computational tools that provide a quick and accurate means of physical properties prediction of agricultural materials, and have been shown to perform well in comparison with traditional methods. In this research, some physical properties of pumpkin (Cucurbita pepo L.) seeds, including linear dimensions, volume, ...
Synthesis, Biological Evaluation, Molecular Docking, and Acid Dissociation Constant of New Bis-1,2,3-triazole Compounds
Nural, Yahya | Özdemir, Sadin | Yalçın, Mustafa Serkan | Demir, Bünyamin
In this study, new bis-1,2,3-triazole derivatives, N,N′-(1,3-phenylene)bis(2-(4-R-1H-1,2,3-triazol-1-yl)acetamide), were synthesized by copper-catalyzed azide-alkyne cycloaddition click chemistry in 84–96 % yield. A wide range bioactivity screening was performed to determine DNA cleavage, antioxidant, antibacterial and antifungal activities. All of the synthesized bis-1,2,3-triazoles showed excellent DNA cleavage activity and 4 e, bearing 2-bromoethyl moiety as a substituent, was almost degraded all of the plasmid DNA. Molecular docking simulations suggest that the synthesized compounds act as minor groove binders of DNA. The antioxidant activities of the bis-1,2,3-triazoles were determined based on the radical scavenging effect of the stable 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radic...
Estimation of the Weights of Almond Nuts Based on Physical Properties through Data Mining
Demir, Bünyamin
Quality attributes are the major parameters designating market values of the agricultural goods and commodities. Several practices are applied to improve quality parameters of the fruits and vegetables. Such quality attributes should also be estimated through various approaches before to design of equipment and tools used in handling and processing of these goods and to design storage facilities. Data mining is a novel approach used to estimate various attributes or quality parameters of the fruits from previously measured attributes. Different algorithms embedded into data mining operations may yield quite accurate and reliable equations for estimation of quality attributes. Almond is a significant cash crop for growers. Since almond is quite tolerant to droughts and salinity, it is prefe...
Morphological Characteristics of Grapevine Cultivars and Closed Contour Analysis with Elliptic Fourier Descriptors
Demir, Bünyamin
Morphology is the most visible and distinct character of plant organs and is accepted as one of the most important tools for plant biologists, plant breeders and growers. A number of methods based on plant morphology are applied to discriminate in particular close cultivars. In this study, image processing analysis was used on 20 grape cultivars (“Amasya beyazı“, “Antep karası“, “Bahçeli karası”, “Çavuş“, “Cevşen“, “Crimson“, “Dimrit“, “Erenköy beyazı“, “Hafızali“, “Karaşabi“, “Kırmızı“, “İzabella (Isabella) “, “Morşabi“, “Müşgüle“, “Nuniya“, “Royal“, “Sultani çekirdeksiz (Sultanina)“, “Yalova incisi“, “Yerli beyazv“, “Yuvarlak çekirdeksiz“) to classify them. According to image processing analysis, the longest and the greatest projected area values were observed in “Antep karası“ cultivar....
Determination of Spray Angle and Flow Uniformıty of Spray Nozzles with Image Processing Operations
Demir, Bünyamin
This study was conducted to determine the spray angle and flow uniformity of different hydraulic spray nozzles at different spray pressures with the aid of image processing operations. Spray images were captured with a digital camera to determine spray angles and spray patterns. Captured images were transferred to computer environment and analyzed with different image processing software. The spray angle at 3 bar pressure was measured as 107.2 degrees for anti-drift nozzles, as 105.6 degrees for air-injection nozzles, as 69.9 degrees for ST 80 flat-fan nozzles, as 84.0 degrees for ST 90 flat-fan nozzles, as 103.2 degrees for ST 110 flat-fan nozzles and as 54.2 degrees for hollow-cone empty set1.0 mm nozzles. Cone angle at 3 bar pressure was measured as 106.7 degrees for anti-drift nozzles,...
Effectiveness of Different Weed Management Methods in Silage Maize (Zea mays L.) and Effect on Yield
Demir, Bünyamin
In this study, the determination of the effect of band herbicide, hoeing, brushing and flaming methods that has been used especially row crops on weed management on the parameters of weed management and yield in silage maize has been aimed. Tillage, seed bed preparation, planting and fertilization were applied at the all area of experiment plots with the same method weed management tool and machines have been run at three different ground speeds. After application the number of weeds in the experimental areas were determined using the framework with 0.5 m2 and compared with the control plots. The best weed control in the weed management areas was determined in the lowest ground speed of Band Herbicide Method with a value of 79% in the 1st year and 81% in the 2nd year. The speed increasing ...
Physical characteristics of cherry (Prunus avium) varieties and shape analysis with the elliptic Fourier method
Demir, Bünyamin
Knowing the physical properties of biological products is of great importance in terms of developing harvesting technologies, innovating crop processing technologies and determining product drying properties. The aim of this study was to determine the dimensional and shape attributes of two different cherry types (‘10-5’ and ‘10-22’) and six different cherry varieties (‘Ferbolus Verdel’, ‘Lapins’, ‘Merton Late’, ‘Noir de Guben’, ‘Starks Gold’ and ‘Telegal’) and to put forth the differences and similarities of cherry varieties. For dimensional parameters, the greatest averages were observed in ‘10-22’ type and smallest averages were observed in ‘Telegal’ variety. Dimension properties of ‘Merton Late’, ‘Noir de Guben’ and ‘Starks Gold’ varieties were similar. ‘Telegal’ variety had the greate...
New bis- and tetrakis-1,2,3-triazole derivatives: Synthesis, DNA cleavage, molecular docking, antimicrobial, antioxidant activity and acid dissociation constants
Nural, Yahya | Özdemir, Sadin | Yalçın, Mustafa Serkan | Demir, Bünyamin
In this study, a series of bis– and tetrakis–1,2,3–triazole derivatives were synthesized using copper-catalyzed azide-alkyne cycloaddition (CuAAC) click chemistry in 73–95% yield. The bis– and tetrakis–1,2,3–triazoles exhibited significant DNA cleavage activity while the tetrakis–1,2,3–triazole analog 6g completely degraded the plasmid DNA. Molecular docking simulations suggest that compound 6g acts as minor groove binder of DNA by binding through several noncovalent interactions with base pairs. All bis- and tetrakis–1,2,3-triazole derivatives were screened for antibacterial activity against E. coli, B. cereus, S. aureus, P. aeruginosa, E. hirae, L. pneumophila subsp. pneumophila strains and antifungal activity against microfungus C. albicans and C. tropicalis strains. Compound 4d exhibit...
Low cost measurement setup based on a piezoelectric microphone for estimating apple bruising using Shannon entropy
Demir, Bünyamin
This study presents a low cost measurement setup for estimating apple bruise volume during drop impact tests. The proposed measurement system consists of three main stages namely recording impact sound, signal processing, and estimating bruise volume. In the recording stage, the impact sound occurred when striking the apple on the surface was recorded by a piezoelectric microphone into computer. The impact sound was converted into Shannon entropy signals based on the Kernel density approach, and two measurable quantities namely entropy peak and pulse-width time were extracted from Shannon entropy signals in the signal processing stage. In the bruise volume estimating stage, the regression curves that map entropy peak and pulse-width features into bruise volume are estimated using measureme...
Effects of position angles in twin-jet spray applications on droplet penetration of hydraulic nozzles
Demir, Bünyamin
This study was conducted to determine the effects of different position angles in twin-jet spray applications on droplet penetration of different nozzle types. Seven different nozzle types (standard flat fan, ST; narrow flat fan, STN; multirange, LU; low-drift potential, AD; air-induction, IDK; twin-jet air-induction, IDKT) were used and nozzles were positioned +15° along the forward direction, perpendicular to ground surface 0? and reverse direction of forward -15°. Spray experiments at 100 L/ha constant application volume were conducted under controlled conditions of a closed facility. Water sensitive paper (WSP) was used as sampling surface. WSP samples were placed vertically and horizontally over both the metal frames and root collar of artificial plants. The present findings revealed ...
Biochemical composition and shape-dimensional traits of rosehip genotypes
Demir, Bünyamin | Alkaya, Günseli Bobuş
In the present study, the biochemical composition and shape and dimensional traits of 25 rosehip (Rosa canina) genotypes were investigated. The shape and dimensional traits were determined by image processing technique. Seed-propagated rosehip genotypes belonging to R. canina were collected from the natural flora of Mesudiye (Ordu) and Talas (Kayseri) districts. Antioxidant activity (39.510–72.673 mmol · kg−1), total flavonoids (287.80–1,686.20 mg quercetin equivalent (QE) · kg−1) and total phenolics (38,519.40–79,080.60 mg gallic acid equivalent · kg−1) of the genotypes exhibited large variations. Width (12.2 mm) and thickness (12.5 mm) of fruits averages were found to be close to each other. The genotypes exhibited fruit lengths between 12.0 mm and 29.5 mm. Average projected area at hori...
Prediction of Walnut Mass Based on Physical Attributes by Artificial Neural Network (ANN)
Demir, Bünyamin
Several researchers have investigated the relationships among different physical attributes of the fruits. For proper design and operation of grading systems, important relationships among the mass and other properties of fruits such as length, width, thickness, arithmetic mean diameter, geometric mean diameter, sphericity, surface area, volume, projected area, shape index, aspect ratio and elongations must be known. Recent researches have focused on artificial neural network (ANN) approaches to predict hard-to-find attributes of the fruits from easily-determined and readily available values. In this study, Modular Neural Network (MNN) and Radial Basis Neural Network (RBNN) structures of Artificial Neural Network (ANN) were employed to predict walnut mass from the physical attributes of th...
Shape Discrimination of Almond Cultivars by Elliptic Fourier Descriptors
Demir, Bünyamin
Knowledge is required about shape and size features of almonds before the design of machines, equipment and systems used in harvest and postharvest processes such as classifying, drying, packaging, grading, transportation and quality assessments of almonds. Such attributes are also required for assessing consumer preferences, cultivar registration, security of plant variety rights, investigating heritability and analyzing shape abnormalities. In present study, seven almond cultivars (‘Bertina’, ‘Ferragnes’, ‘Ferradual’, ‘Ferrostar’, ‘Glorieta’, ‘Lauranne’ and ‘Marta’) grown in Turkey were used in order to determine the longitudinal, surface and gravitational features and to compare their shapes with elliptic Fourier descriptors. ‘Bertina’, ‘Glorieta’ and ‘Ferragnes’ had the greatest longit...
New naphthoquinone thiazole hybrids as carbonic anhydrase and cholinesterase inhibitors: Synthesis, crystal structure, molecular docking, and acid dissociation constant
Efeoğlu, Çağla | Selçuk, Özge | Demir, Bünyamin | Nural, Yahya
In this study, N-[3-(3-amino-1,4-dioxo-1,4-dihydronaphthalen-2-yl)-4-R-thiazol-2(3H)-ylidene]-2,6-difluorobenzamide derivatives as new 1,4-naphthoquinone thiazole hybrids were synthesized by reacting of N-[(3-amino-1,4-dioxo-1,4-dihydronaphthalen-2-yl)carbamothioyl]-2,6-difluorobenzamide with various α-bromoketones in 76–92% yields. Their molecular structures were characterized by 1H NMR, 13C NMR, 19F NMR, FT-IR, and HRMS, and the stereochemistry of one of the hybrids was determined by single crystal x-ray diffraction study. These synthesized new compounds (3a–e) were found to be effective inhibitor molecules for cholinesterases (butyrylcholinesterase (BChE) and acetylcholinesterase (AChE)), and carbonic anhydrase I and II (hCA I and hCA II) enzymes. KI values were found to be in the range...