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Articles 61 - 67 of 67
Full-Text Articles in Forest Sciences
Comparison Of Extraction Methods Optimised By Rsm For Extraction Of Some Bioactivesfrom Liquorice Samples, Fahri̇ye Şeyma Özcan, Ni̇hat Özcan, Ahmet Abdullah Us, Osman Sağdiç
Comparison Of Extraction Methods Optimised By Rsm For Extraction Of Some Bioactivesfrom Liquorice Samples, Fahri̇ye Şeyma Özcan, Ni̇hat Özcan, Ahmet Abdullah Us, Osman Sağdiç
Turkish Journal of Agriculture and Forestry
This study compared the extraction efficiency of 3 different techniques, ultrasound-assisted extraction (UAE), microwaveassisted extraction (MAE), and the classical extraction method, in obtaining some bioactive and allergen compounds, namely liquiritin (LQ), glycyrrhizin (GL), glycyrrhetinic acid (GA), and carbenoxolone (CBX), from liquorice samples of Glycyrrhiza glabra grown in Turkey. Extraction parameters for each technique were optimised by the response surface methodology-central composite design approach. Concentrations of LQ, GL, GA, and CBX, which were selected as the responses of selected independent variables, were determined by liquid chromatography-electrospray ionisation tandem mass spectrometry. One-way variance analysis was performed to evaluate the significance of the …
Effect Of The Height Of The Stem On The Polysaccharide Composition Ofpinus Brutia (Ten) Wood And Kraft-Pulp, Ayben Kiliç Pekgözlü, Muhsi̇n Taş, Esra Ceylan, Jarl Hemming
Effect Of The Height Of The Stem On The Polysaccharide Composition Ofpinus Brutia (Ten) Wood And Kraft-Pulp, Ayben Kiliç Pekgözlü, Muhsi̇n Taş, Esra Ceylan, Jarl Hemming
Turkish Journal of Agriculture and Forestry
The first goal of this study was to determine the polysaccharide composition of Pinus brutia wood and how this composition changes during kraft pulping. The second goal was to determine the effect of the stem height on chemical composition. The content of hemicelluloses was about 280 mg/g at a height of 1.3 m, whereas the content was about 300 mg/g at the top of the stem (4.3 m). The main sugars in the wood of P. brutia were mannose (102 mg/g dw), xylose (69 mg/g dw), and glucose (44 mg/g dw). During kraft pulping, 52% of the total hemicelluloses were …
The Effects Of Wheatgrass Length On Antioxidant Activity And Total Phenolic Content Inwheatgrass (Triticum Spp.), Yusuf Şavşatli
The Effects Of Wheatgrass Length On Antioxidant Activity And Total Phenolic Content Inwheatgrass (Triticum Spp.), Yusuf Şavşatli
Turkish Journal of Agriculture and Forestry
This study was carried out with the aim of determining the effects of wheatgrass lengths on antioxidant activity and total phenolic content of wheatgrass belonging to different cultivars (Triticum spp.) in laboratory conditions in 2017. When the wheat seedlings grown in plastic containers under soilless conditions reached three levels of wheatgrass length (5-6, 8-9, and 11-12 cm), the seedlings were cut from the root collar and dried in an oven. As a result of analysis of the dried material, it was found that the cut lengths of wheatgrass significantly (P < 0.01) affected antioxidant activity and total phenolic content of wheatgrass. Ten wheat cultivars belonging to Triticum monococcum L., T. durum L., and T. aestivum L. were used. Wheatgrass was cut at three lengths (5-6, 8-9, and 11-12 cm). It was found that the wheatgrass lengths had a significant (P < 0.01) effect on antioxidant and total phenolic content of wheatgrass. In addition, in terms of these traits, the most suitable wheatgrass length for cutting changed depending on the wheat species and also cultivars. The highest (P < 0.01) antioxidant activity and total phenolic content (TPC) were also determined at three wheatgrass lengths in cultivar Sarıbaşak. The average values obtained from Sarıbaşak wheatgrass were 31.0% for DPPH-free radical scavenging activity and 51.6 mg GAE-1 dry weight for TPC. The results of the analysis suggested that Sarıbaşak is the most promising cultivar in terms of both antioxidant activity and TPC in wheatgrass.
Screening Of Factors Affecting Somatic Callusing And Embryo Induction In Allium Cepa L.Through Plackett?Burman Methodology, Kourosh Keighobadi, Maryam Golabadi, Mahdi Khozaei, Abdol Majid Rezai
Screening Of Factors Affecting Somatic Callusing And Embryo Induction In Allium Cepa L.Through Plackett?Burman Methodology, Kourosh Keighobadi, Maryam Golabadi, Mahdi Khozaei, Abdol Majid Rezai
Turkish Journal of Agriculture and Forestry
Induction of embryonic callus through available asexual explant culture is applied in the protection and maintenance of cytoplasmic-male sterility and in the maintenance of other lines of onion (Allium cepa L.). Usage of the Plackett?Burman (PB) experimental design has been suggested as a screening method for many variables that influence the desired induction. In order to overcome limitations of standard experimental designs and prioritization of media culture components, a systematic investigation was carried out using the PB design. In this investigation, the effects of different factors such as 2,4-D, putrescine, carbohydrate sources (maltose, sorbitol, and sucrose), silver nitrate, glutamine, and …
Determination Of Some Physicomechanical And Biochemical Parameters Of Hazelnut (Corylus Avellana L.) Cultivars, Necati̇ Çeti̇n, Mehmet Yaman, Kevser Karaman, Bünyami̇n Demi̇r
Determination Of Some Physicomechanical And Biochemical Parameters Of Hazelnut (Corylus Avellana L.) Cultivars, Necati̇ Çeti̇n, Mehmet Yaman, Kevser Karaman, Bünyami̇n Demi̇r
Turkish Journal of Agriculture and Forestry
Hazelnut is one of the most popular nuts consumed by people; it has different cultivars in Turkey. The aim of the current study was to characterize some physicomechanical characteristics, shape features, color, and biochemical properties of 6 standard and 3 local hazelnut cultivars grown in Turkey. The shape and size properties of the samples were determined using image processing techniques as an alternative to conventional measurement methods. Additionally, principal component analysis (PCA) was used to classify the hazelnut samples in terms of the biochemical parameters of the hazelnut cultivars. According to the findings, the highest crude oil (63.25%) and lowest …
Phenotypic Variability Of Autochthonous Walnut (Juglansregia L) Genotypes Innorthwestern Bosnia And Herzegovina, Azra Skender, Mirsad Kurtovic, Pakeza Drkenda, Dinko Becirspahic, Aziz Ebrahimi
Phenotypic Variability Of Autochthonous Walnut (Juglansregia L) Genotypes Innorthwestern Bosnia And Herzegovina, Azra Skender, Mirsad Kurtovic, Pakeza Drkenda, Dinko Becirspahic, Aziz Ebrahimi
Turkish Journal of Agriculture and Forestry
The main objective of this study was to examine the characteristics and the relationship between walnuts in the Una-Sana Canton based on phenotypic properties. This is the first study of preselection of walnut variability in this area. In this study, we evaluated the phenological and morphological characteristics of 75 selected genotypes during 2014 and 2015. Twenty-four phenotypic traits were monitored throughout 2 years on different sites. The results of the PCA analysis showed a very high heterogeneity of walnut seedlings on the examined sites, from the aspect of observed parameters. A limited number of superior genotypes were found, but individual …
Comparison Of Computational Fluid Dynamics-Based Simulations And Visualized Seed Trajectories In Different Seed Tubes, Arzu Yazgi, Vedat Demi̇r, Adnan Deği̇rmenci̇oğlu
Comparison Of Computational Fluid Dynamics-Based Simulations And Visualized Seed Trajectories In Different Seed Tubes, Arzu Yazgi, Vedat Demi̇r, Adnan Deği̇rmenci̇oğlu
Turkish Journal of Agriculture and Forestry
The objective of this study was to compare computational fluid dynamics (CFD)-based simulations and visualized seed trajectories in different seed tubes that can provide seed incorporation into the soil with enhanced seed spacing. The other objective was to determine the relation between the seed trajectories and peripheral speed of the vacuum disk. In order to meet the first objective, 2 different seeds (corn and cotton) and artificial spherical material (∅10 mm) were tested under laboratory conditions. The seeds and artificial material were released by free fall into the semitransparent seed tubes (seed tubes A and B) from different release points, …