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Probiyotik Bakterilerin Stress Koşullarının Azaltılmasında Alternatif Proses Teknolojileri Texte intégral
2023
Deniz Aksöz | Tülay Özcan
Probiyotik mikroorganizmalar sıcaklık, pH, oksijen ve su aktivitesi gibi faktörler ile birlikte ürün matriksi ve gıda işlem proseslerinden büyük ölçüde etkilenmektedir. Isıl işleme alternatif teknolojiler, artan probiyotik canlılığı, prebiyotik stabilite ve daha yüksek biyoaktif bileşik konsantrasyonuna sahip yenilikçi gıda ürünlerini tasarlamak için son yıllarda giderek önem kazanmaktadır. Gelişen bu alternatif teknolojilerin probiyotik ürünlere uygulanması, bakteri canlılığını arttırmakla birlikte, probiyotik fermantasyonu ile kolesterolün bağlanması, Caco-2 hücrelerine yapışma, anjiyotensin dönüştürücü enzim (ACE) inhibitörünü artırma, antioksidan, antimikrobiyal aktivite ve sistolik kan basıncını düşürme gibi biyolojik etkileri iyileştirmektedir. Ayrıca, bu teknolojiler ile fermantasyon kinetikleri optimize edilmekte, bakteri faaliyetleri sonucunda bakteriosin, oligosakkarit, peptit, fenolik bileşik, flavonoidler gibi bileşikler üretilmekte, fermente edilmekte, korunmakta, biyoaktif (vitamin ve mineral biyoyararlılığı) ve duyusal özellikler iyileştirilmektedir. Son yıllarda artan sağlık etkilerine sahip postbiyotikler elde etmek için de gelişen bu teknolojiler uygulanmaktadır. Çalışmalar, alternatif işleme teknolojilerinin gıdalardaki probiyotik, prebiyotik ve postbiyotiklerin terapötik etkisini artırdığını göstermektedir. Bu derlemede, ısıl işleme alternatif teknolojilerin probiyotik fermantasyonu üzerindeki etkisi incelenmektedir.
Afficher plus [+] Moins [-]Olea europaea Yapraklarının Bazı Biyoaktif Özelliklerinin Araştırılması, Antimikrobiyal ve Enzim İnhibisyon Etkinliğinin İncelenmesi Texte intégral
2023
Melek Kalkan | Ashabil Aygan | Nazan Çömlekçioglu | Uğur Çömlekçioğlu
Olea europaea (zeytin) bitkisi başta gıda, sabun, kozmetik gibi pek çok alanda yaygın bir kullanıma sahip olup geleneksel tedavilerde de kullanıldığı bilinen ve tıbbi yönü olan bir bitkidir. Bu çalışmada Kahramanmaraş’ın merkez bölgesinde yetişen zeytin ağacı yaprakları haziran ayında toplanmış ve farklı çözücülerle elde edilen ekstraktlarından toplam fenolik, flavonoid içerikleri ile antioksidan, enzim inhibisyon aktivitelerinin yanı sıra yağ asidi bileşenleri belirlenmiştir. Ayrıca tüm bitki ekstraktlarının antimikrobiyal aktiviteleri oyuk agar (well-diffusion) metodu ile ve MIC değerleri mikroplakalarda tespit edilmiştir. GC-MS analiz sonucuna göre O. europaea’nın yaprak kısmına ait 13 farklı yağ asidi belirlenmiştir. Sabit yağın başlıca bileşenlerini oleik asit, linoleik asit, palmitik asit, gama-linoleik asit, lignoserik asit, stearik asit, miristik asit, palmiteloik asit, trikosanoik asit ve nervonik asit oluşturmaktadır. Bitki ekstraklarının toplam fenolik madde değerleri; 31,72-59,31 mg/g, toplam flavonoid miktarları 4,64-15,98 mg/g, FRAP değerleri 38,93-50,44 µg/g ve DPPH değerleri 0,85-1,71 mg/g olarak tespit edilmiştir. Antimikrobiyal etki açısından test edilen 12 mikroorganizma üzerinde ise O. europaea yaprakları farklı oranlarda inhibisyon göstermiştir.
Afficher plus [+] Moins [-]Effect of Planting Times on the Yield and Quality of Fenugreek (Trigonella Foenum-Graecum L.) Under the Conditions of Kahramanmaraş Texte intégral
2023
Sevtap Kartal | Zeynep Baturay | Lale Efe
This study was performed in the 2013-2014 cultivation season with the purpose of determining the most suitable planting season of fenugreek under the ecological conditions of Kahramanmaraş. The trial was established in two different cultivation periods as winter and spring at the Eastern Mediterranean Transition Zone Agricultural Research Station in according to factorial randomized block design with three replications. In the study, the Gürarslan fenugreek variety as well as Candicate Line-1 and Genotype-1 fenugreek genotypes were used as material. In the study, features such as plant height, first pod height, number of branches per plant, pod length, number of pods per plant, number of seeds per pod, seed yield per plant, seed yield per decare, thousand seed weight, mucilage rate, fixed oil ratio, fixed oil yield, crude protein ratio, humidity, raw ash ratio, and the rates of linoleic acid, alpha linoleic acid, oleic acid, palmitic acid, stearic acid as important fatty acids were studied. Variance analysis made on the data obtained by using SPSS statistical package program. In the comparison of the means, Duncan multiple comparison test was used. As a result, in this study, was found that in the region where the study was performed, the most suitable planting season for fenugreek cultivators is the winter planting dated winter planting when the highest values of plant height, number of pods per plant, seed yield per plant were obtained. From the features studied in the research the difference between genotypes was found significant only from the perspective of seed yield per plant and fixed oil ratio. While the best results were obtained from Genotype-1 for seed yield per plant, the best results for fixed oil yield were obtained from Candicate Line-1.
Afficher plus [+] Moins [-]Exploring the Effects of Information and Communication Technologies in the Marketing of Broiler Birds in Enugu State, Nigeria. Texte intégral
2023
Ikenna Charles Ukwuaba | Collins Nzeribe Ngwuoke | Chinedum Jachinma Chiemela | Cynthia Uzoamaka Nwachukwu | Ridwan Mukaila | Chikaosolu Maryqueen Ileka | Stella Nwawulu Chiemela
Information-intensive and precise knowledge-based marketing approaches is a key aspect in ensuring the long-term viability of agriculture. Unfortunately, the economic potential of information and communication technologies used in agricultural marketing is not fully utilized. This study, therefore, unravelled the effects of information and communication technologies in the marketing of broiler birds in Enugu state, Nigeria. Primary data collected from 90 marketers were analysed using descriptive and inferential statistics. The result showed that all the marketers accessed and used mobile phones very often to communicate with their customers but only a few (40%) used social media platforms while radio and television were rarely used. The gross margin analysis showed that broiler marketing was a viable enterprise with ₦80,972.72 (USD 197.29) gross margin monthly. The degree of use of information and communication technologies, level of education and marketing experience significantly affected the revenue margin of the respondents. High cost of information and communication technology facilities, inconsistence power supply, poor network coverage and connectivity and high cost of airtime and data were among the major constraints faced by the marketers. The study recommends that the problem of inconsistent power supply and poor network coverage should be rectified by the government and the network providers, respectively. The national communication commission should as a matter of urgency regulate, moderate and reduce the high call tariffs and internet data cost to enhance the profit margin of the broiler marketers.
Afficher plus [+] Moins [-]Effectiveness of Phosphorous acid, Bacillus subtilis and Copper Compounds on Apple cv. Gala with M9 Rootstock in the Control of Fire Blight Texte intégral
2023
Ayşegül Gür | Kubilay Kurtuluş Baştaş
Necrogenic Gram-negative bacterium Erwinia amylovora, which causes economic losses especially in pome fruits such as apple, pear, quince and loquat, some berries and many ornamental plants, causes fire blight disease. Copper compounds are used extensively in disease control programs and they can cause toxicproblems in terms of plant and environmental health. In addition, the formation of resistance to copper in the pathogen is frequently observed. In this study, plant activator phosphorous acid and biological control agent Bacillus subtilis, and 3 different copper compounds, Copper sulfate, Copper oxychloride and Copper hydroxide which are commonly used against E. amylovora, on apple cv. Gala with M9 rootstock were evaluated comparatively. When the new season shoot lengths of 3-year-old plants with homogeneous growth reached 20-25 cm, chemicals and B. subtilis were applied first time before one week ago from the pathogen inoculation, and after 2 times with 1 week intervals. The youngest two leaves at tips of actively growing terminal plant shoots were inoculated by cutting off using scissors dipped in suspension of E. amylovora str. EaARADY5 containing 108 CFU ml-1. Disease assessments were made after the disease severity (%) was determined on the basis of shoot blight after symptom development of the disease stopped, and the results were found to be statistically significant (p<0.05). According to the findings, while the highest effect was obtained by copper oxychloride with 69% effectiveness among all applications, the lowest effectiveness was obtained with 43.5% copper sulfate. It has been revealed that the use of the most effective of the copper compounds in field applications will result in less exposure to chemicals in terms of human and environmental health, and that B. subtilis and phosphorous acid can be used significantly in the integrated control of fire blight.
Afficher plus [+] Moins [-]Examination of the Relationships between Internal and External Egg Quality Traits: A Structural Equation Model Texte intégral
2023
Samet Hasan Abacı | Taner Tunç | Hasan Önder | Kadir Erensoy | Musa Sarıca
This study aimed to determine the structural relationship between internal and external egg quality (IEEQ) traits. In this study, 114 eggs produced from 24 weeks-old laying hens reared at the Ondokuz Mayis University Research Farm were used. Egg weight (EW), egg width (EWi), egg length (EL) and shell weight (SW) measurements were examined as external quality traits. Also, albumen height (AH), albumen width (AW), yolk height (YH), yolk weight (YW) and yolk diameter (YD) parameters were used as internal quality traits. Structural Equation Model (SEM) was used to determine the relationships between IEEQ traits. Data analysis was performed with the LISREL package. It has been determined that the variables that are important in determining the external egg quality are SW, EWi and EL. When the variables explaining the internal traits were examined, it was determined that the YW, YD, AW, AH and YH were significant. It was determined that the relationship between external egg quality and internal quality was 0.96 and external quality explained the internal quality by 91%. It has been determined that the SEM used in this study is sufficient to explain the relationship between internal and external quality.
Afficher plus [+] Moins [-]Determination of Comfort Zones in Landscape Planning in Niğde Texte intégral
2023
Orhun Soydan
Our cities, most of which do not show planned development, are turning into ecosystems that threaten the living life of the natural and cultural environment as a result of many environmental problems such as increasing human and building density and incorrect land use. This negative situation has the opportunity to be resolved with urban planning in which the physical structure of the city is balanced and with landscape plans that will create open and green areas in the city that contribute positively to human and environmental health. The urban heat island effect, which has emerged as a result of intense urbanization in recent years, creates problems for city residents. Unfortunately, most cities in the world face this negative climate phenomenon. It becomes difficult to combat the heat island effect, especially in cities where construction density increases unconsciously. Ecological planning appears as a factor that will prevent these problems from turning into important environmental problems in the future. The most important component to be considered in ecological planning is climate. In this study, thermal comfort areas were tried to be determined along Dr Sami Yağız Street, which is one of the most frequently used areas of Niğde. Temperature and humidity measurements were taken at 25 points at equal intervals on both sides of the street. Measurements were made on different days of the week and at 4 different times during the day. The obtained values were transferred to ArcGIS 10.3 software and maps were produced. A universal linear extension system was used in the evaluation of climate data, and climate factors and bioclimatically suitable areas on the street were determined and evaluated in terms of comfort level. It has been determined that the humidity rate in the study area varies according to measurement hours, and there is no significant change in temperature.
Afficher plus [+] Moins [-]Eğitim Mekânları Girişinde Kurumsal Kimliğin Etkisi Texte intégral
2023
Mehmet Noraslı | Ali Akçaova
Yapılan çalışmada, iç mekân tasarımının kurumsal kimlik ilkesiyle nitelikli hale getirilmesi hedeflenerek eğitim mekânlarında, duvar yüzeyi tasarımının yapılması, uygulanması ve böylece belirlenen örneklem alanlarının iç mekân tasarımıyla kurumsal kimliği kapsayıcı şekilde kullanıcıya kazandırılması amaçlanmıştır. Çalışmada materyal olarak Selçuk Üniversitesi Sosyal Bilimler Enstitüsü ve Selçuk Üniversitesi Edebiyat Fakültesi’nin girişinde bulunan duvar yüzeyleri kullanılmıştır. Çalışmanın metodunda, literatür araştırması yapılarak iç mimarlık disiplini üzerinden kurumsal kimlik ve eğitim mekânlarına odaklanılmıştır. Sonrasında örneklem alanlarını sürekli kullanan personel ve öğrencilerin görüş ve önerileri alınarak gözlem ve analizlerde bulunulmuştur. Buna bağlı olarak ele alınan eğitim mekânlarının girişlerinde kurumsal kimliği logo ile temsil eden, odaklayıcı aydınlatmalarla pekiştirilmiş, gelen misafir ve öğrencilerin fotoğraf çekinebilecekleri duvar yüzeylerinin olması gerektiği gözlemlenmiştir. Edinilen verilere göre, materyal olarak ele alınan eğitim mekânlarının kurumsal kimliğine göre duvar yüzeyi tasarımı yapılmış ve uygulanmıştır. Tasarımın uygulanmasından sonra, yerinde gözlem ve analizlere dayanarak personel ve öğrencilerin kuruma karşı aidiyetlik duygusunun geliştiği, gelen misafirlerin ve mezunların günümüzde yaygın olarak gerçekleştirilen fotoğraf çekme eyleminde bulunarak kurumun tanınırlığını arttırdığı, tasarımı yapılan duvar yüzeyinin ait olduğu mekâna kazandırılarak aktif hale geldiği görülmektedir.
Afficher plus [+] Moins [-]Evaluation of Protein Profiles, Bioactivity, Allergenicity and Toxicity of Peptides Generated After in silico Digestion of Common Wheat and Einkorn Wheat Texte intégral
2023
Pelin Sultan Perçin | Sibel Karakaya
The belief that ancient wheat is more beneficial than common wheat has been growing trend in recent years among the consumers. The present study aims to compare bioactive peptide, allergen peptide and toxic peptide generation after gastrointestinal digestion of modern wheat (Triticum aestivum) and ancient wheat, einkorn (Triticum monococcum var. monococcum), using in silico tools. The primary sequences of both kinds of wheat were obtained from BIOPEP-UWM and UniProtKB/Swiss-Prot database. In silico digestion was applied using BIOPEP-UWM online tool. For the simulation of gastrointestinal digestion pepsin (pH 1.3) (EC 3.4.23.1), trypsin (EC 3.4.21.4), and chymotrypsin (EC 3.4.21.1) were selected and analyzed. Homology analysis was performed for each protein sequences using EMBOSS Needle program. Toxic and allergen peptides were predicted using ToxinPred online tool and Allergen FP v.1.0. The results showed that einkorn and common wheat proteins exhibited similar properties including high similarity rate (58.72-87.40%) indicating the percentage of matches between the two sequences and the identical bioactivities for peptides generated after digestion. Most of the bioactive peptides were dipeptides and the majority of them displayed more than one bioactivities including ACE inhibitory, DPP IV inhibitory or antioxidant activity, etc. Allergen peptides generated after in silico digestion were found to be similar for both kinds of wheat. In silico gastric digestion of einkorn and wheat caused toxic peptides production, but they were disappeared after in silico intestinal digestion. In conclusion, although there is a perception related to the Einkorn that is healthier than common wheat, in silico digestion of common wheat and einkorn did not support this perception.
Afficher plus [+] Moins [-]Exploration of Two Cucurbitaceae Fruit (Muskmelon and Watermelon) Seeds for Presence of Phytochemicals, and Antioxidant and Antimicrobial Activities Texte intégral
2023
Ashiq Hussain | Saima Akram | Tahira Siddique | Shazia Yaqub | Haya Fatima | Muhammad Rehan Arif | Atif Ali | Anjum Shehzad
Cucurbitaceae family fruits, especially melons, offers significant quantities of minerals carotenoids and phenolic compounds, contributing to their antioxidant activity. However, seeds of these fruits are usually discarded as waste by products. In current study, seeds of watermelon (Citrullus lanatus) and muskmelon (Cucumis melo) were separated, dried, grounded and extracted, with 70% ethanol, to investigate total phenolic content (TPC), flavonoid content (TFC), carotenoid content (TC) content, and total antioxidant activity (TAA). Further, antimicrobial activities of these extracts were tested against selected bacterial and fungus strains. Results showed that extracts of both cucurbits presented significant amounts of phytochemicals, with higher quantities presented by watermelon seeds. In watermelon seeds, TPC were found 156.50 mg/GAE 100 g, TFC 56.78 mg CE/100 g, TC 36.65 mg/100 g, and TAA 71%, and these amounts were significantly higher than those found in muskmelon seeds. Antimicrobial study results showed that extracts of both seeds exhibited significant zone of inhibitions against three bacterial and three fungal species, and these values were very comparable to the reference antimicrobial drug used, Ciprofloxacin. Findings of current research work provided significant grounds for presence of phytochemical bioactives in two melon fruits seeds, providing the basis for extraction and utilization of these bioactives, through processing and fortification different pharma foods.
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