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Sivas İlinde Doğal Olarak Yetişen ve Yenilebilir Bir Bitki Olan Evelik (Rumex crispus) Bitkisinin Biyoaktivitesi ve Terapotik Nitelikleri 全文
2019
Sevgi Durna Daştan | Hasan Durukan | Ahmet Demirbaş | Erol Dönmez
Bitkilerden elde edilen ekstrelerin birçoğunun biyolojik etkileri ve etki mekanizmaları hakkındaki bilimsel veriler hala yetersiz olmakla birlikte bu konuya olan ilgi her geçen gün artmaktadır. Bu çalışmada, Rumex crispus (Evelik) bitkisi mevsiminde Sivas yöresinden toplanarak kurutulmuş ve sonrasında yapraklı kısımlarından etanol, metanol ve su ekstraksiyonları elde edilmiştir. Çalışmanın amacı, elde edilen her bir ekstrenin bazı mikroorganizmalar üzerindeki antimikrobiyal aktivitelerinin değerlendirilmesi, toplam antioksidan seviyesi (TAS), toplam oksidan seviyesi (TOS), oksidatif stres indeksi (OSI) değerlerinin ve çeşitli hücre hatları üzerindeki anti-kanserojen niteliklerinin ortaya konulmasıdır. TAS, TOS ve OSI değerlerini tespit etmek için Rel Assay Diagnostics kitler kullanılmıştır. Bitki ekstrelerinin mikroorganizmalara karşı minimum inhibisyon konsantrasyonunu (MIC) belirlemek amacıyla mikrodilüsyon broth yöntemi kullanılmıştır. Çalışmada antimikrobiyal aktivite analizleri, Staphylococcus aureus (ATCC 29213), Enterococcus faecalis (ATCC 29212), Pseudomonas aeruginosa (ATCC 27853), Escherichia coli (ATCC 25922), Bacillus cereus (ATCC 11778), Klebsiella pneumonia (ATCC 13883), Candida albicans (ATCC 10231) ve Candida tropicalis (DSM 11953) mikroorganizmaları kullanılarak yapılmıştır. Normal fare fibroblast hücre hattı ve 3 farklı insan kanser hücre hattında MTT yöntemi ile bitki özütlerinin sitotoksik aktivitesi belirlenmiştir. Sonuç olarak, evelik bitkisinin etanol, metanol ve su ekstraklarının denendiği mikroorganizmalar üzerinde antimikrobiyal aktivitesinin bulunmadığı, yüksek düzeyde antioksidan aktiviteye sahip olduğu ve bazı hücre kültürlerinde sitotoksik aktivitesinin olduğu tespit edilmiştir.
显示更多 [+] 显示较少 [-]Preparation of Glucose Sensor Based on Keggin Type Polyoxometalate/Conducting Polymer Composite for Use in Food Industry 全文
2019
Yasemin Torlak | Rukiye Ayranci | Metin Ak
In continuous monitoring and control systems as required by automation, biosensors are greatly advantageous with their precision, stability, ease of use and response rates. In this study, a new amperometric glucose sensor has been fabricated based on a composite film prepared by electrochemical polymerization of carbazole derivative with having free amino group in presence of the Keggin type polyoxometalate (POM) anion, (nBu4N)3[PW9O34(tBuSiOH)3], in order to meet the needs of the sector. The enzymatic biosensor was prepared by immobilizing the Glucose Oxidase (GOx) enzyme to the surface modified with the POM/PAAC composite. Biosensor preparation and working conditions were optimized and analytical characterizations was carried out. The amperometric response of the POM/PAAC-GOx modified electrode versus varying concentrations of glucose was studied at a potential value of −0.7 V (Ag/AgCl). When the data obtained from these surfaces can be prepared in a short time, it was determined that they are sensitive to the presence of glucose in food samples such as cola and fruit juice. One of the innovations of this study is the shortening of the response time and the easy preparation of the biosensor. In addition to high linearity, short response time and long shelf life advantages in determining the glucose content in foods, it is thought that it will be an economical alternative with its easy preparation, ease of application and time and chemicals gain in measurements.
显示更多 [+] 显示较少 [-]Evaluation of Spermatological Parameters of Karayaka Ram Grown in Ordu Province 全文
2019
Fatih Ahmet Aslan | Hilal Tozlu Çelik | Yeliz Kaşko Arıcı | Kalbiye Konanç | Metehan Eser Kahveci | İbrahim Kiper
The aim of this study was to determine the macroscopic and microscopic spermatological parameters of the Karayaka rams grown in public hands. Out off-season sperm couldn’t be taken from the rams. During the season, semen was collected from all 2-4 age of Karayaka rams (n = 10). Weight (kg) and circumference of the scrotum (cm) were also recorded. When the collected spermatozoa were examined, it was found that the weight variable correlated only with the pH variable. The correlation coefficient calculated between weight and pH was -0,802 and it was found to be statistically significant. The correlation coefficient, which calculated as 0.680, between the circumference of the scrotum (cm) and mortality (% Dead-Live) shows that one feature increases while the other increases significantly. Viscosity (1-5) was correlated only with mass activity (Mass Activity 0-4), and the degree of this relationship was calculated as -0.655. Variables were not associated with sperm volume (ml), motility (%) and density (109).
显示更多 [+] 显示较少 [-]Morphological and Yield Response of Pulses Against Drought Stress: A Review 全文
2019
Aqsa Tahir | Masood Qadir | Rabia Saif | Saira Sattar | Sidra Tahir
Pulses in Pakistan is used in combination with cereals to balance the diet. Its area and production is decreasing for last many years. In the barren and partly arid regions, water shortage is the major component that restricts yield. Using of drought resistance plant is one of the best ways for good cultivation under drought condition. As the pulses have great nutritional and economical values and drought stress affect their morphological features. The legume yield is mostly cultured in rain fed region of the Punjab where they bear a slighter quantity of water situation resulting in low yield of bean. To overcome these problems it is necessary to get knowledge about the performance of different lines of different pulses crops under water stress conditions. That’s why in this paper the information about the previous literature has been discussed.
显示更多 [+] 显示较少 [-]Enhancing Agronomic Efficiency of P Fertilizer through Integration with Agricultural Lime Coffee Husk Ash and Charcoal on Faba Bean (Vicia faba L.) Grown in Acidic Soil of Masha District Ethiopia 全文
2019
Teshale Tadesse Kebede | Mitiku Weldesenbet
Poor soil fertility is important constraints that limited crop production in Ethiopia. The Masha district was highly prone to phosphorus fixation with ions like Aluminum ion since soil of the area is prone to acidity. This experiment was therefore conducted to investigate the effect of of phosphorus fertilizer with agricultural lime, coffee husk ash and coffee husk charcoal on yield of faba bean and agronomic efficiency of the fertilizer on acidic soils of Masha district. Field experiment involving two rates of phosphorus (23 and 46 kg P2O5/ha) and the three soil amendments was in randomized complete block design with three replication. The result indicated that significantly high grain yield was obtained from integrated application of 46 kg P2O5/ha with the agricultural lime, coffee husk ash and coffee husk charcoal with the observed values of 2265, 1953 and 1943 kg/ha, respectively. Agronomic efficiency significantly great values were obtained from treated with the agricultural lime+23 kg P2O5/ha, agricultural lime+46 kg P2O5/ha, coffee husk ash+23 kg P2O5/ha and coffee husk charcoal+23 kg P2O5/ha with the observed values of 14.86, 14.60 and 10.07, respectively. It can be concluded that 46 kg P2O5 with 2.5 ton agricultural lime, 7.5 ton coffee husk ash or 7.5 ton coffee husk charcoal per hectare on acid soils for high yield and yield components on faba bean at Masha district. When 23 kg P2O5/ha was integrated with the soil amendments, relatively high agronomic efficiency was observed.
显示更多 [+] 显示较少 [-]Nohut (Cicer arietinum L.) Tarımında Gül Posası, Ahır Gübresi ve Bakteri Aşılamanın Verim ve Bazı Verim Öğelerine Etkileri 全文
2019
Bünyamin Aldemir | Ruziye Karaman | Muharrem Kaya
Çalışma, bazı nohut çeşitlerine (Aydın 92, Azkan ve Gökçe) organik (gül posası, ahır gübresi ve bakteri aşılama) ve kimyasal gübre uygulamalarının verim ve verim öğeleri üzerine etkilerini belirlemek amacıyla Dinar/Afyonkarahisar' da 2011 yılında yürütülmüştür. Deneme tesadüf bloklarında bölünmüş parseller deneme düzenine göre 3 tekerrürlü olarak kurulmuştur. Araştırmada bitki boyu, ilk bakla yüksekliği, bitkide dal, bakla ve tane sayısı, bitki tane ağırlığı, biomas verimi, tane verimi, hasat indeksi, 100 tane ağırlığı ve protein oranı özellikleri incelenmiştir. Araştırma sonuçlarına göre, bitki boyu 38,87-44,23 cm, ilk meyvenin yüksekliği 17,37-21,43 cm, bitki dal sayısı 2,70-3,53 adet, bitkide bakla sayısı 30,37-50,37 adet, bitkide tane sayısı 29,43-48,47 adet, bitki tane verimi 10,50-18,30 g, bitki ağırlığı 20,87-42,50 g, yüz tane ağırlığı 34,67-40,43 g, tane verimi 128,1-188,6 kg/da, hasat indeksi %32,10-53,08 ve protein oranı %22,67-25,67 arasında değişim göstermiştir. Sonuç olarak organik (gül posası, ahır gübresi ve bakteri aşılama) ve kimyasal gübre uygulamalarının nohut çeşitleri üzerindeki etkisi verim özellikleri yönünden önemli olmuştur. Tüm çeşitler içerisinde Gökçe çeşidi ve uygulamalar içerisinde ahır gübresi, kimyasal gübreleme ve gül posası ön plana çıkmaktadır.
显示更多 [+] 显示较少 [-]Properties of Solvent Cast Polycaprolactone Films Containing Pomegranate Seed Oil Stabilized with Nanocellulose 全文
2019
Ece Söğüt
The increase of consumer demand for using natural products and reducing the use of non-compostable packaging materials have encouraged research on biodegradable polymers including natural components such as essential oils. Pomegranate seed oil (PSO) has active properties such as antimicrobial and antioxidant activities. The aim of this study was to prepare active polycaprolactone (PCL) films by using PSO. PCL films including PSO emulsions (5-30%), which were stabilized with nanocellulose (NC) particles, were prepared by casting method. The physical and active properties of PCL films were determined by means of water vapor permeability (WVP), mechanical properties, optical properties, release behaviour, and potential antimicrobial activity. The WVP values of PCL films was lower when incorporated with NC-stabilized PSO emulsions. The incorporation of PSO into PCL films in the form of NC-stabilized emulsions significantly reduced the transmittance and lightness values, which resulted in an increase in opacity. In the release tests, the slower release of PSO was observed for NC-stabilized films. The stabilization of PSO with NC showed to be less effective when high concentrations of oil (30%) were used. Film samples showed potential antimicrobial activity against Escherichia coli, and Listeria monocytogenes, however, a clear zone of inhibition around the film samples was not detected. Results also suggested that the antimicrobial effect was dependent on two important factors: the release behaviour of PSO through the film samples and, the direct interaction between PSO and microorganisms. These results showed that the combination PCL films and PSO stabilized with NC could be an interesting approach in active packaging technologies.
显示更多 [+] 显示较少 [-]Application of Plant-Based Edible Film and Coatings for Minimally Processed Fruits and Vegetables 全文
2019
Ali Kozlu | Yeşim Elmacı
Today’s consumers prefer foods with high nutritional value, functional properties and long shelf life. Particularly, interest in fresh fruits and vegetables, which are ready for consumption due to their healthy and nutritious nature, is increasing. However, biological activities such as respiration and transpiration cause loss of water and soluble substances in fruits and vegetables and change the gas concentration in the environment during storage and this situation greatly affects critical quality parameters such as mass loss, nutritional value and shelf life. Minimal processing, such as peeling, cutting or shredding increases the surface area of fresh fruits and vegetables, reduces the shelf life by triggering a variety of enzymatic reactions. The edible film coating is a novel packaging method that is natural, environmental friendly, economic and easily applicable. This innovative technique can be used to produce a product that is closest to fresh fruits and vegetables, maintain the desired quality characteristics, control microbiological spoilage and extend the shelf life. In addition, the use of plant-based materials in film coating applied to minimally processed fruits and vegetables attracts the consumers and increases the confidence in products. In this review, the information about the current applications of edible coating to the minimally processed fruits and vegetables and the effect of this application on some physical, chemical, sensory and microbial changes occurring in the products during the storage period has been presented.
显示更多 [+] 显示较少 [-]Bottled Water Consumption Habits and Purchase Behaviours of Consumers in the Urban Areas of Adana 全文
2019
Mutlu Bulut | Arzu Seçer
In recent years, the world population, urbanization process and need for natural water resources have increased. Therefore, providing the safe and clean drinking water has become an important topic of our day. This research was carried out to determine the bottled water consumption habits and purchasing behaviours of consumers. Primary data were obtained from 384 consumers living in urban areas of Adana province. The demographic characteristics and consumption habits of consumers were determined by calculating frequencies, ratios and averages. Factor analysis was used to determine the factors that affect the purchasing behaviours of the consumers and the cluster analysis were used to distinguish consumers with different perception levels from those with similar characteristics. Results indicated that 40.4% of participants consumed bottled water and 85.2% of these consumers took into account the brand of bottled water. Factor analysis revealed that 3 factors, product characteristics, packaging and price, and recognition affected purchasing behaviours in this sample. As a result of the K-means clustering analysis consumers in this study were divided into 3 groups. The most important factors for consumers in these observed clusters were shelf life, product freshness and product hygiene.
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