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Peyzaj ve Rekreasyonel Potansiyelin Belirlenmesinde Gülez Yöntemi: Gölbaşı Gölleri Tabiat Parkı (Adıyaman) Örneği Full text
2025
Ercan Vural
Nüfus artışı, hızlı ve plansız kentleşme ile birlikte kent içerisindeki yeşil alanlar başta olmak üzere diğer tüm doğal alanlar yapılaşma nedeniyle niteliğini kaybetmiş veya azalmıştır. Kentte yaşayan insanlar için bu alanların azalması ve niteliğinin ortadan kalkması rekreatif ihtiyaçların karşılanamamasına neden olmuştur. Bu durum kent içinde veya yakın alanlarındaki tabiat parklarının, mesire alanlarının ve ormanlık alanlarının daha kıymetli hale gelmesine imkan tanımıştır. Bu çalışmanın amacını, Adıyaman ili, Gölbaşı ilçesi sınırları içinde kalan Gölbaşı Gölleri Tabiat Parkı’nın Gülez yöntemine göre rekreasyonel potansiyelinin belirlenmesi oluşturmaktadır. Gülez yönteminde, rekreasyonel alanın peyzaj değeri, iklim değeri, ulaşılabilirlik durumu, rekreatif kolaylık ve olumsuz etkenlerin puanlandırılmasıyla rekreasyon potansiyeli hesaplanmaktadır. Bu hesaplamaya göre, Gölbaşı Gölleri Tabiat Parkı’nın rekreasyonel potansiyeli toplamda “67” puan alarak “yüksek” kategoride değerlendirilmiştir. Gölbaşı Gölleri Tabiat Parkı’nda gerçekleştirilen arazi çalışmaları sonucunda, yöntemde belirtilen bazı ögelerinin nitelik olarak eksik olduğu ve olumsuz etken ögelerinin oldukça fazla olduğu tespit edilmiştir. Gölbaşı Gölleri Tabiat Parkı’nın rekreasyonel faaliyet potansiyeli tespit edilenden daha fazladır. Sahadaki olumsuz etkenlerin azaltılmasıyla alanın rekreasyonel faaliyet potansiyelinin “19” puan daha artırılabileceği, bu sayede Gölbaşı Gölleri Tabiat Parkı’nın toplam puanın “86” olarak potansiyelinin “çok yüksek” sınıfına ulaşabileceği öngörülmektedir.
Show more [+] Less [-]Investigation of Antioxidant Properties of Spartium junceum L.: Effect of Plant Parts and Storage Conditions Full text
2025
Muhammed Mehdi Üremiş | Ergül Belge Kurutaş
Spartium junceum L. is a plant traditionally used for different medicinal purposes. While limited research data explicates its antioxidizing ability, interest in this plant is induced mainly due to its possible role, especially against stress-causing oxidative effects. The objectives of this study were to compare antioxidant activity in flowers and leaves of Spartium junceum L., as well as time under different storage conditions implemented for antioxidative mechanisms. Spartium junceum L. plants were obtained from the Kahramanmaras, Turkey region; subsequently, the flowering and leaf parts of the plant were separated and analyzed. Plant homogenates were prepared, and the activities of SOD and CAT enzymes, as well as MDA levels, were determined using spectrophotometric methods. Enzyme activity upon storage at +4°C, -20°C, and -70° temperature enzyme samples were carried out separately and operated for less than one month in our laboratory. Flowers exhibited higher SOD and CAT activities than leaves. Flowers also showed higher levels of MDA. It may be due to the structural and biochemical differences, where flowers experience extra oxidative stress. The optimal enzyme retention under storage conditions was at -70°C, and a decrease in temperature increased the stability of this biocatalyst. In contrast, MDA levels increased at low temperatures at total capacity. The antioxidant properties of the flower extract had stronger antioxidant potential than those of the leaf part, which also means that chemically active substances show much higher concentrations in this plant section. Storage temperature significantly affects the stability of enzymes, and it was stated that low temperatures mainly maintain antioxidant activity. The results obtained from this study recommend Spartium junceum L. as a valuable antioxidant food resource.
Show more [+] Less [-]A Study on Consumers' Knowledge of Distinguishing Natural and Organic Honey Full text
2025
Fatih Bilici | Nebi Seren
In today's marketing processes, knowing what consumers want plays an active role in shaping the products businesses offer and gaining a competitive advantage. This study aims to obtain a guiding result for companies in this sector by questioning the knowledge levels of consumers regarding honey products. The study aims to reveal the uncertainties in consumer perception between natural and organic honey and examine this distinction's impact on purchasing decisions. The research seeks to create more informed consumer preferences in the honey market and to show the contributions of positioning the product correctly in the minds of consumers. In this study, content analysis was conducted to determine the responses of 117 participants to the statement, “There is a difference between natural honey and organic honey, and I have information about what this difference is.” After the analysis, the study is shaped by dividing consumers into four categories according to their level of knowledge about honey. The qualitative research aims to obtain comprehensive information on the participants' awareness of natural and organic honey. The study results show that the concepts of natural and organic honey can be confused by consumers, and the difference between these two products cannot be fully conveyed. This result shows that organic honey businesses and regulatory organizations should inform consumers more accurately and clearly through marketing communication efforts in marketing their products. In the study, recommendations are presented to consumers and businesses based on the results of the qualitative analysis, and the methods that companies should apply to overcome the deficiencies in consumer perception of the distinction between natural and organic honey are included.
Show more [+] Less [-]Natural Preservatives as Medicinal Aromatic Plants: Implications for Sustainable and Functional Bread Full text
2025
Nurten Yılmaz
In this study, the plants Melissa officinalis (Melissa), Elaeagnus angustifolia (Elaeagnus), Styrax officinalis (Styrax) and Echinops ritro (Echinops) were firstly used to prepare enriched bread and to study their effects on the shelf life of bread. Water and alcohol extracts of the plants were also prepared to determine their antibacterial and antifungal activities in-vitro. The focus is on their potential applications as natural preservatives in sustainable functional bread production. The antimicrobial activity was evaluated using the agar well diffusion assay. Results showed that alcohol extracts of medicinal and aromatic plants exhibited significantly higher antimicrobial activity than water extracts, with inhibition zones diameters ranging from 15-22 mm for alcohol extracts compared to 8-13 mm for water extracts. Gram-negative bacteria, such as Salmonella Paratyphi A, Pseudomonas aeruginosa, and Klebsiella pneumoniae, showed resistance, with inhibition zone diameters below 10 mm. However, alcohol extracts from Styrax and Elaeagnus achieved inhibition zone diameters of 12-15 mm against these pathogens. Gram-positive bacteria, including Staphylococcus aureus, showed promising results, with alcohol extracts zones averaging 20 mm and water extracts inhibition of zone diameters averaging 14 mm. Fungal inhibition zone diameters was effective, with extracts reducing Aspergillus niger growth by 85%. A shelf life experiment revealed that bread enriched with Elaeagnus and Melissa extracts remained mold-free for 7 days, while control samples developed mold within 3-4 days. Sensory analysis indicated that 80% of participants preferred the taste and aroma of Elaeagnus seed bread, with an average score of 4.5-5. The incorporation of medicinal and aromatics plants not only enhances bread flavour but also provides health benefits besides sell life of bread. These plants serve as valuable natural preservatives, improving nutritional value, extending shelf life, and inhibiting harmful microorganisms in sustainable bread production.
Show more [+] Less [-]Foliar Application of Folic Acid on Cabbage Seedlings Grown under Restricted Irrigation Conditions Can Alleviate the Negative Effects Full text
2025
Raziye Kul
Drought, a critical abiotic stress worsened by climate change, poses a substantial threat to crop production and global food security. White cabbage is classified as a moderately drought-sensitive crop. The function of folic acid, otherwise known as folate, in the plant's response to drought conditions is not yet fully understood. The aim of the study was to evaluate the potential of folic acid in enhancing certain growth parameters and physiological traits of cabbage seedlings under limited irrigation conditions. In this investigation, the effects of FA as a foliar application at 0, 100, and 200 µM (FA0, FA1, and FA2, respectively) were examined on white cabbage seedlings grown under full-irrigation (I0) and restricted irrigation (I1), set to 50% of full capacity irrigation scheme (I0). Drought stress adversely affected the plant growth properties of cabbage seedlings, whereas FA treatments mitigated the adverse effects of drought stress on the plant growth properties of cabbage seedlings. Under restricted irrigation, plants treated with 100 µM FA (FA1) had higher plant height, stem diameter and leaf area, while plants treated with 200 µM FA (FA2) had higher plant dry weight and plant dry matter content. Plant fresh weight increased with FA treatments under restricted irrigation, but no significant difference was observed between doses. On the other hand, leaf relative water content (LRWC), which decreased under restricted irrigation conditions, increased with FA applications regardless of the dose, while electrical conductivity (EC), which increased under the same conditions, decreased with 100 µM FA (FA1) application. Leaf number, root fresh weight, root fresh weight, root dry weight, root dry matter content and chlorophyll value (SPAD) were not affected by FA treatments under both restricted and full irrigation conditions. In conclusion, foliar spray of folic acid in cabbage can be recommended as a potential application to alleviate drought stress.
Show more [+] Less [-]Süt Kaynaklı Biyoaktif Bileşenlerin Antidiyabetik Etkisi Full text
2025
Ayşe Nur Elmaskaya | Mubin Koyuncu
Tip 2 diyabet (T2DM), vücudun insülin hormonunu etkili bir şekilde kullanamamasıyla karakterize edilen ve yüksek kan şekeri seviyelerine yol açan kronik bir metabolik hastalıktır. Süt, T2DM yönetiminde olumlu etkileri olduğu belirtilen önemli besin bileşenleri bakımından zengin bir kaynaktır. Sütte kaynaklı biyoaktif bileşenler, süt proteinlerinden, yağlarından ve diğer bileşenlerinden türeyen, vücutta çeşitli biyolojik aktiviteler gösteren ve sağlık üzerinde olumlu etkiler sağlayan moleküllerdir. Bu bileşenler (proteinler, peptitler, yağ asitleri), süt ürünlerinin tüketimi sırasında ya da süt proteinlerinin sindirilmesi ve hidroliz edilmesi sonucunda ortaya çıkmaktadır. Son dönemde yapılan müdahale çalışmaları, süt kaynaklı biyoaktif proteinlerin, peptitlerin ve yağ asitlerinin T2DM'nin önlenmesi ve yönetiminde yararlı etkiler sağladığını göstermektedir. Süt biyoaktif bileşenleri arasında kazein, kazein türevi peptitler, peynir altı suyu proteinleri ve peynir altı suyu proteini türevi peptitler yer almaktadır. Bu biyoaktif bileşenler, çeşitli mekanizmalar aracılığıyla anti-diyabetik etkiler göstermektedir. Bu mekanizmalar arasında insülin duyarlılığının artırılması, glukoz metabolizmasının düzenlenmesi ve inflamasyonun azaltılması yer almaktadır. İnsanlarda gerçekleştirilen müdahale çalışmaları sonucunda, süt kaynaklı bu biyoaktif bileşenlerin açlık kan şekeri seviyelerini düşürdüğünü ve insülin duyarlılığını artırdığı ortaya koyulmuştur. Bu çalışma, sütten elde edilen biyoaktif bileşiklerin (proteinler, peptitler ve yağ asitleri) anti-diyabetik etkilerini ve bu bileşiklerin T2DM yönetimindeki etki mekanizmalarını inceleyen güncel çalışmaları kapsamlı bir şekilde ele almaktadır. Böylece, süt biyoaktif bileşenlerinin T2DM üzerindeki potansiyel faydaları ve klinik uygulamaları hakkında bir bakış açısı sunmaktadır.
Show more [+] Less [-]Effect of Kohlrabi Peel Powder as a Dietary Fibre Enrichment on Technological, Nutritional, and Sensory Properties of White Bread Full text
2025
İrem Bilge Tek | Suna Dilara Aktas | Aybüke Karaoğlan
The addition of dietary fibres (DF) obtained from by-products into bread is an attractive way to enhance consumers’ fibre consumption while simultaneously reducing waste from by-products. This study aimed to examine the viability of replacing kohlrabi peel powder (KPP) into white bread at levels ranging from 0% to 12%. The technological and nutritional characteristics of white breads were evaluated, and sensory analysis was conducted. The specific volume values of the samples ranged from 1.486 to 1.861 mL/g. The findings showed that the specific volume of the white bread samples decreased when KPP was used at concentrations higher than 3%. The sample coded N4 (9%) exhibited higher moisture levels in both the crumb and crust, compared to the all bread samples (p˂0.05). The nutritional features of the bread samples varied as follows: ash content ranged from 0.573% to 0.588%, protein from 6.460% to 7.998%, fat from 3.200% to 4.200%, total DF from 0.250% to 3.214%, total carbohydrate content from 51.963% to 69.272%, and energy levels from 211.7 to 324.0 kcal. The sample coded N3 (6%) was approved by the panelists, however the other samples with a greater quantity of KBB were not favored. SEM images showed the gluten structure in the enriched bread samples coded N2, N3 and N4 were constituted by fibrous components that established a more open network. The study’s results indicated that elevated amounts of KPP might enhance the DF content of white bread; however, consumers do not favor higher fibre content in the bread samples. Utilization of 6% KPP could enhance the technological, nutritional, and sensory characteristics of white bread.
Show more [+] Less [-]Remediation of Heat Stress in Tomato (Lycopersicon Esculentum L.) by Foliar Application of Proline Full text
2025
Saeed Ur Rahman | Akbar Ali | Altaf Husssain | Sadia Nazeer | Mughees Ul Hassan | Waryam Abbas
The tomato is a significant vegetable in the world on the basis of consumption, nutrition, and extensive use in processed foods. During plant growth and development, amino acids especially exogenous application of proline (Pro), plays a crucial role to increase stress tolerance under various abiotic stresses. Among abiotic stressors, temperature is considered as an important and alarming stressor for plant development and growth. Sometime a significant drop in crop productivity is the outcome of harsh temperature increment. An investigation was carried out at the Horticulture Lab, College of Agriculture, University of Sargodha, during 2021-22 to inspect the role of foliar application of proline under heat stress in tomato plants. Tomato seedlings with true leaves were exposed to high temperatures (25°C [control], 40°C, and 45°C) with exogenous proline sprays of (0, 0.5, 1 and 1.5 mili-molars). Various growth attributes like morphological i-e number of leaves, leaf area cm2, shoot fresh weight (mg), shoot dry weight (mg), root fresh weight (mg), root dry weight (mg), and physiological [photosynthetic rate (µ mol/m-2s-1)], chlorophyll contents (spad), stomatal conductance (µ mols m-2 s-1 transpiration rate (µ mol/m-2 s-1),)] were studied. The findings indicated that foliar application of proline at 1.5 mM under heat stress on 40oC and 45oC was found to be more advantageous to improve growth attributes like number of leaves (12.2), leaf area (8.3 cm2), shoot length (10.39 cm), shoot fresh weight (1.88 mg), shoot dry weight (0.28 mg), root dry weight (0.20 mg), and remediated the detrimental effect of heat stress in tomato plants. The variation between control and proline treated heat-stressed plants supported that proline may have a function in alleviating heat stress.
Show more [+] Less [-]Hasat Öncesi AVG (Aminoetoksivinilglisin) Uygulamalarının ‘Fuyu’ Trabzon Hurması Çeşidinin Meyve Kalitesi ve Soğukta Muhafaza Süresi Üzerine Etkileri Full text
2025
Mustafa Zilci | Erdinç Bal
Bu araştırmada ‘Fuyu’ çeşidi meyvelerine, hasattan 14 ve 21 gün önce farklı dozlarda (0, 75, 150 ve 225 mg l-1) AVG (Aminoetoksivinilglisin) uygulamalarının depolama süresince meyve kalitesine etkileri incelenmiştir. AVG uygulaması yapılan meyveler modifiye atmosferli poşetler ile ambalajlanarak 0-1oC sıcaklık ve %85-90 oransal nemde 4 ay süreyle depolanmıştır. Araştırmada ağırlık kaybı, toplam suda çözünür kuru madde miktarı, titre edilebilir asit miktarı, meyve eti sertliği, askorbik asit miktarı, toplam fenolik madde miktarı, toplam antioksidan madde miktarı, solunum hızı ve üşüme zarar oranları incelenmiştir. Çalışmada depolama süresince meyve eti sertliği azalırken, meyvelerin ağırlık kayıplarında artışlar belirlenmiştir. AVG uygulamalarının meyve olgunlaşması üzerine olan geciktirici etkisine paralel olarak üşüme zararı oluşumu da gecikmiştir. Solumun hızı ve biyokimyasal bileşiklerin kaybı üzerine artan dozları ile AVG’nin engelleyici etkisi belirgin bir şekilde ortaya çıkmıştır. Sonuç olarak, ticari hasattan önce uygulanan 150 ve 225 mg l-1 AVG uygulamasının, hasat sonrası depolama döneminde meyve kalitesi açısından Fuyu’ çeşidi Trabzon hurması üzerinde önemli ve olumlu bir etkisi olmuştur.
Show more [+] Less [-]Optimizing Artificial Shading for Microclimate, Yield, Leaf Nutrient and Economic Benefits in Sinceri (V. vinifera L.) Grape Cultivation Full text
2025
Tuba Uzun Bayraktar | Önder Volkan Bayraktar | Mehmet Solak
This study was conducted on the Sinceri grape cultivar grown for both table and raisin (drying) purposes, in the 2021 growing season in Siirt/Türkiye. The primary objective was to create a microclimate within the vine canopy by installing net covers with different shading rates (35%, 55%, and 75%) during the veraison period, thereby delaying the harvest and obtaining high-quality, high-yield grapes. Regarding phenological development, the period between full bloom and harvest was the shortest under the 55% shading treatment, which also recorded the lowest mean temperature (28.54 °C) and the lowest Effective Heat Summation (EHS) value (1965.70 dd). The highest mean temperature (26.28 °C) was observed under the 75% shading treatment, while the highest EHS value (2401.05 dd) was recorded under the 35% shading treatment. In terms of yield compared to the control, the 35% shading treatment provided a 21.75% increase, the 55% treatment yielded a 57.44% increase, and the 75% treatment led to a 37.45% increase. Furthermore, it was determined that all shading treatments increased the macro- and micronutrient contents in grapevine leaves. Economic analyses for the Sinceri grape cultivar revealed that the shading treatments had a statistically significant effect on yield. In conclusion, the net cover with a 55% shading rate proved to be the most effective treatment.
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