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النتائج 81 - 90 من 598
Tarım Arazilerinin Değeri Üzerine Etki Eden Faktörlerin Analizi: Ankara İli Evren İlçesi Örneği النص الكامل
2021
Zeki Bayramoğlu | Şenol Özdemir
Bu çalışmada, tarım arazilerinin değerine etki eden faktörlerin belirlenmesi ve bu faktörlerin değer üzerindeki etki oranlarının tespit edilmesi amaçlanmıştır. Bu kapsamda, Ankara ili Evren ilçesinde gayeli örnekleme yöntemi ile belirlenen 104 adet işletme ile anket çalışması yapılmış ve tarım arazilerinin değerine etki eden faktörlerle ilgili görüşleri alınmıştır. Elde edilen verilerin analizinde AHP yöntemi kullanılmıştır. Araştırma sonucuna göre arazi değerini etkileyen faktörler, arazi verimliliği %19,63, arazi genişliği %9,60, arazi şekli %4,47, arazi eğimi %3,63, arazinin yola uzaklığı %2,57, arazinin yerleşim yerine uzaklığı %2,84, arazinin sulama olanakları %30,38, arazi satışının hareketli olması %3,31, arazinin kadastro görmüş olması %2,70, arazinin yola cepheli olması %2,80 ve arazinin toprak yapısı %18,06 olarak tespit edilmiştir. Bu doğrultuda, tarım arazilerinin üretim kabiliyetlerine yönelik faktörlerin değer üzerinde daha etkili olduğu sonucuna ulaşılmıştır.
اظهر المزيد [+] اقل [-]Exchange of Total Carbohydrate, Minerals, and Phenolics in Grape and Grape Products النص الكامل
2021
Özlem Aras Aşcı | Nilgün Göktürk Baydar
In this study, it was aimed to determine the total carbohydrate (CHO), minerals and phenolic (total phenolic content, total flavanols, total flavonols, and anthocyanins) of grape and grape products. For this reason, fresh grapes (Kalecik Karası, Öküzgözü, Emir, and Narince), raisins (Karadimrit and Sultani Çekirdeksiz), wines (Kalecik Karası, Öküzgözü, Emir, and Narince), commercial red grape juice, molasses, and vinegar were used as research materials. In conclusion, total CHO contents in the samples were ranged from 0.14 to 48.37 g 100 g-1. In terms of the minerals, molasses was rich in K while the highest contents of P and Fe were found in vinegar. Raisin of Karadimrit contained the highest Ca content among all the samples tested. Not only total phenolic contents but also total flavanols, total flavonols, and anthocyanins were altered depending on the sample types and the varieties. As a result, it was determined that grape and grape products represent a potentially significant source of CHO, minerals, and phenolic.
اظهر المزيد [+] اقل [-]Development and Validation of a Simple RP-HPLC-PDA Method for Determination of 18 Polyphenols in Grape Juice and Red Wine النص الكامل
2021
Nilüfer Vural | Özlem Yalçınçıray
According to the trend of a healthy eating awareness trend, having a potential benefit on human health, some polyphenols like flavonoids, resveratrol, hydroxy-stilbenes, and phenolic acids are in the spotlight. Grapes, and one of the most widespread grape product wine; are among the best sources of these polyphenols. In this study, a highly specific, susceptible, and easy chromatographic method was brought out and validated to determine 18 polyphenols in grape and red wines. For this aim, an HPLC-PDA was used, and the separation was accomplished on an RP-ODS4 column. The method comprised of a mobile gradient phase consisting of A solution (acetic acid in water, pH 2.00) and a mixture of the solution A – acetonitrile (20:80, v/v), at a flow rate of 1.0 ml/min, and PDA detection was carried out at 260,280, 320, and 360 nm. According to the results, it can be said that the program indicated good linearity over the range of 1-40 mg L−1 of phenolics with r2>0.99. The recovery of the 18 phenolics ranges from 83.17% to 119.88% at red wines and 88.20% to 117.83% at grape juices. The method is well precise, with the relative standard deviation (RSD) of the average concentration of the phenolic compounds are ranges from 1.22% to 2.02% at red wines and 1.01% to 2.56% at grape juices.
اظهر المزيد [+] اقل [-]Bioactive, Physicochemical and Antimicrobial Properties of Koruk (Unripe Grape, Vitis vinefera L.) Products النص الكامل
2021
Berna Öztürk | İlkin Yücel Şengün
In the study, the bioactive, physicochemical and antimicrobial properties of koruk juice and dried koruk pomace were investigated. The total phenolic contents of koruk juice and pomace were determined as 1119.670 and 1182.170 mg GAE/L, respectively. Higher DPPH radical scavenging activity found in koruk pomace, which was consistent with total phenolic contents. Organic acid, total sugar and ascorbic acid contents of koruk juice (3.44%, 4.737 g/L and 2.559 mg/100 mL) were higher than koruk pomace (0.19%, 0.866 g/L and 0.242 mg/100 mL). The counts of Total Psychrophilic Aerobic Bacteria and mold-yeast in pomace were determined as 0.694 and 1.016 log CFU/g, respectively, while no growth was observed in koruk juice. Koruk juice and pomace indicated antimicrobial effect on all test microorganisms in the range of 31.3-500.0 µg/mL (Minimum Inhibition Concentration). The most sensitive bacteria to koruk juice were Bacillus cereus, while Pediococcus acidilactici was the most sensitive one to koruk pomace. Koruk juice also showed bactericidal effect on all test cultures at concentration ranging between 250.0 and 500.0 µg/mL (Minimum Bactericidal Concentration), koruk pomace was not showed bactericidal effect on Escherichia coli O157:H7, Salmonella Typhimurium, E. coli and B. cereus. This study demonstrated that the koruk products could be used in food applications as natural antioxidant and antimicrobial substance.
اظهر المزيد [+] اقل [-]Growth Hormone Gene Polymorphism and its Relation to Quail Growth and Carcass النص الكامل
2021
Fatma İlhan
In this study, it was aimed to determine the polymorphism of GH (growth hormone) gene in Japanese quails and the relationships between these genes and body weight and carcass traits. 3 genotypes (AA, AB and BB), 2 (A and B) alleles were detected by cutting the GH intron 1 region with restriction enzyme MspI. As a result of variance analysis, it was determined that the hatching weights of the animals with B allele and liver weights were higher. Thus, it is seen that GH gene and PCR-RFLP technique can be used in breeding studies.
اظهر المزيد [+] اقل [-]Prevalence of Tea Consumption among University Students of South-Eastern Region of Bangladesh and Associated Factors النص الكامل
2021
Jakia Sultana Jothi | Nahidur Rahman | Anindya Chakraborty | Shireen Akther
Tea has become an integral part of our culture and everyday life due to taste, together with a refreshing and mildly stimulant effect. The study was carried out to investigate the behaviour pattern and prevalence observed due to regular consumption of tea as a source of caffeine among the university students using a self-reported validated questionnaire. Socio-demographic and data related to tea consumption pattern were collected and analysed statistically. Among 245 study participants, the majority chose a greater proportion of tea (83.7%) followed by coffee (14.7%). The main reasons for tea consumption by university students included keeping alert during the examination period (38.8%), followed by the removal of anxiety and stress. Students (around 61%) mostly consume 2-3 cup of tea per day. According to the study, 12.7% of students had never consumed tea. More than two-thirds (66.9%) of the students reported having a sound sleep, normal BMI and blood pressure, a majority of them were engaged with regular physical exercise. The study also illustrated that most of the students (52.7%) give priority to the quality of the product rather than price, brand and taste while buying packaged tea leaves. Thus, this study provides basics about the prevalence and presents a recommendation for expanding tea consumption market among the university students.
اظهر المزيد [+] اقل [-]Türkiye’de Lisanslı Depoculuk Faaliyetlerine Yönelik Bir Araştırma (Kırşehir İli Mucur İlçesi LİDAŞ Örneği) النص الكامل
2021
Hasan Gökhan Doğan | Aybüke Bulut
Tarım sektöründe lisanslı depoculuk faaliyetleri 2005 yılında çıkarılan 5300 sayılı Tarım Ürünleri Lisanslı Depoculuk Kanunu ile başlamıştır. Devletin desteği ile açılmış olup, yayınlanan yönetmelikler ile geliştirilip yine devletin öncülüğünde fiili olarak çalışmaya başlamıştır. Lisanslı depoların Türkiye’nin 2023 Stratejik Hedefleri arasında yer alan sürdürülebilir tarım yaklaşımı ile önemi artarak devam etmiştir. Türkiye’de son yıllarda sayıları artarak yaygınlaşmakta ve lisanslı depoculuk sistemi tarım ürünleri bakımından büyük önem arz etmektedir. Bu çalışmada, lisanslı depoculuk sisteminin kuramsal boyutu ve Kırşehir ili Mucur ilçesinde faaliyet gösteren LİDAŞ’a hububat teslim eden üreticilerin değerlendirilmesi yapılmıştır. Araştırmanın örneklemini yörede LİDAŞ’a ürün teslim eden 70 üretici oluşturmaktadır. Elde edilen sonuçlar incelendiğinde, üreticilerin %61,40’ının depolama yapamadığı, %45,70’inin ortalama 1-3 ay arası ürününü LİDAŞ’da beklettiği, en fazla önem verdikleri destek aracının stopaj indirimi olduğu, %80,00’inin fiyatlama politikasından memnun olduğu ve %60,00’ının hububat ekiliş kararında LİDAŞ’ın herhangi bir etkisinin olmadığı belirlenmiştir. Ayrıca, üreticilerin diğer sorunları, prosedür kaynaklı sorunlar, analiz ücretleri, yükleme boşaltma ücretleri, depo kira ücretleri ve stopaj masrafının fazla olması üreticide olumsuz bir durum ortaya çıkarmaktadır. Destek miktarlarındaki reel azalış, çalışan personelle ilgili olumsuz düşünceler, depolama olanaklarındaki düşük kapasite ve depolanacak ürün yelpazesinin dar olması olarak ön plana çıkmaktadır. Söz konusu sorunların çözümüyle birlikte lisanslı depoculuk faaliyetlerine yönelimin artacağı söylenebilir.
اظهر المزيد [+] اقل [-]Erzincan Geleneksel Dut Pekmezinin Bazı Fiziksel, Kimyasal ve Antioksidan Özelliklerinin Belirlenmesi النص الكامل
2021
Mehmet Ali Salık | Ayla Arslaner | Songül Çakmakçı
Bu araştırmada, geleneksel yöntemle üretilen Erzincan dut pekmezinin bazı kalite özelliklerinin belirlenmesi hedeflenmiştir. Bu amaçla, 2018 ve 2019 yıllarında geleneksel olarak üretilen 10 adet dut pekmezi örneğinde, çeşitli fiziksel ve kimyasal özellikler ile antioksidan aktivite tespit edilmiştir. Pekmez örneklerinde; pH 4,86-5,17, titrasyon asitliği %0,53-0,85, toplam kuru madde %71,91-84,07, suda çözünür kuru madde %70,60-83,80, toplam kül %1,44-3,47, protein %1,47-3,19, su aktivitesi 0,59-0,75, 5-hydroxymethyl furfural (HMF) 5,70-72,62 mg/kg, toplam şeker %64,04-71,40, invert şeker %40,46-56,15, sakkaroz %7,76-26,59, kalori 262,01-294,54 kcal/100 g, viskozite 745-15275 cP, L* değeri 19,19-32,64, a* değeri 5,68-17,53, b* değeri 2,46-9,01, H° değeri 15,78-52,10 ve C* değeri 8,74-19,72 aralığında belirlenmiştir. Toplam fenolik madde (TFM), 1,1diphenyl-2picyrlhydrazyl (DPPH) antioksidan aktivite ve % inhibisyon değerleri ise sırasıyla; 3,92-10,05 mg GAE/g, 1,31-6,25 mg TE/g ve %7,96-30,69 aralığında bulunmuştur. Araştırma sonuçları değerlendirildiğinde; genel olarak pekmez örneklerinin besin değerlerinin yüksek olduğu, antioksidan ve TFM açısından iyi birer kaynak oldukları ve HMF miktarlarının TS 12001 Pekmez Standardı’nda bildirilen limitlerin oldukça altında kaldığı görülmektedir. Sonuç olarak, Erzincan yöresine ait geleneksel üretim tekniği ile doğal, besin değeri yüksek ve sağlığa yararlı pekmezlerin üretilebildiği ortaya çıkmıştır. Bu araştırma sonuçlarının, Erzincan geleneksel dut pekmezinin önemi, tanıtımı, değer kazanması ve koruma altına alınmasında katkı sağlayacağı düşünülmektedir.
اظهر المزيد [+] اقل [-]Investigation of benthic marine litter in the Yumurtalık Fishing Port النص الكامل
2021
Özgür Yılmaz | Celal Erbaş | Mahmut Ali Gökçe
Marine litter, which can be seen in almost all seas in recent years, is a serious problem for the environment. Similarly, the same problem also exists in Turkey's seas. This study was carried out in 4 different areas, each of which is 100m², in the Yumurtalık Fishing Port in İskenderun Bay. Marine litter was removed from the seabed by diving in these selected areas in April 2016 and June 2017. In the study, a total of 157.2 kg of rubber (49.5%), 118.9 kg of glass (37.4%), 21.61 kg of plastic (6.8%) and 19.94 kg of metal (6.3%) marine litter were detected and removed. It was determined that the marine litter extracted in 2017 was less by weight compared to 2016 (p
اظهر المزيد [+] اقل [-]Effect of Christmas Melon (Laganaria Breviflorus) extract on toxigenic Mycoflora Isolated from Stored Unpolished Rice sold in major Markets in Abeokuta, Nigeria النص الكامل
2021
Amina Badmos | Yetunde Mahmood
Study on toxigenic mycoflora and potential mitigation effect of Christmas Melon (Laganaria Breviflorus) extract in unpolished rice sold in Abeokuta Ogun state of Nigeria was carried out. Unpolished rice gotten from markets in Abeokuta were aseptically transported to the laboratory, serial dilution to reduce the fungal load was carried out and were plated on Potato Dextrose Agar (PDA) and Methyl Red Dessicated Coconut Agar (MRDCA) respectively. Microscopy, macroscopy, toxigenicity test and inhibition studies with the peeled and unpeeled fruit of Laganaria breviflorus fermented for seven days was carried out. Results reveal the predominance of Aspergillus as the major genera, specifically, A. niger, A.flavus, A. parasiticus, A. fumigatus, A. terreus, A. nidulans. Other fungi genera isolated include Penicillium, F`usarium, Mucor, Alternaria and Rhizopus . Of the 11 fungi genera isolated, 9 were toxigenic of which the zones of inhibition of unpeeled whole fruit extract of Laganaria breviflorus range from (3 - 28mm) where A. nidulans shows the highest susceptibility to the whole fruit extract of Laganaria breviflorus while the zone of inhibition of peeled fruit extract of Laganaria breviflorus ranges from (3 - 22mm) where A. parasiticus, Fusarium specie and P.chrysogenum showed the highest susceptibility . As the day progresses the zone of inhibition becomes wider. Unpeeled LB extract exhibited more zones of inhibition than the peeled LB extract. Laganaria breviflorus fruit extracts in the study demonstrates a potential in reducing toxigenic fungi, consequently a means to reducing mycotoxins in staple foods in Nigeria.
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