Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleAçık Erişim2025Milk Production Curves Obtained from Cows Raised in Türkiye According to Years and Determination of Production Differences with the Help of Cluster Analysis and Friedman Test
Çimen, Murat; Güven, Alper
In the study, cluster analysis and Friedman tests were used to create curves for cow milk yields in Türkiye between 2010-2023 and to determine yield differences. For this purpose, milk yield records obtained from TUIK for the years in question were used. Since data before 2010 could not be accessed, 2010 was taken as the starting date. When the figures obtained in the study are examined, it is striking that the years generally show similar curves. These curves generally show a decrease from January to February, then an increase until May. Milk yield values, which reach their peak in May, decrease again until November. After this month, a new increase is noted in December. The months showing maximum and minimum values in the graphs of 2016 and 2017 are different. Therefore, different curves were obtained for these years compared to other years. When the curves of all years, cluster analysis and Friedman test results are examined in general, it can be said that the highest production was determined in May and the lowest production in November. The reason for these differences should be investigated for the years 2016 and 2017, when different curve results were obtained. The findings of this study are important in terms of providing preliminary information for those who will conduct model studies on milk production in our country. In addition to the evaluation of curve graphs, it has been seen from the research findings that different statistical techniques such as cluster analysis and Friedman test give effective results in this type of data. Both cluster analysis and Friedman test methods are test methods that can be used safely in new studies where curve graphs will be made.
AtıfOpenAlex2TR Dizin2
İncele - MakaleAçık Erişim2025Examination of Numerical Changes in Goat and Buffalo Population in TRB1 Region with Cluster Analysis; [Examination of Numerical Changes in Goat and Buffalo Population in TRB1 Region with Cluster Analysis]
Çimen, Murat; Güven, Alper
In this study, the effectiveness of using cluster analysis in determining the changes in the number of animals in the field of goat and buffalo breeding in the TRB1 region was tested. The numbers of goats and buffalos used in the research were obtained from the records kept by TÜİK between 2004 and 2023. According to the cluster analysis results, the numbers of buffalos in Elazığ and Bingöl provinces was found to be higher than Malatya and Tunceli provinces between 2004 and 2023. According to the specified years, while Bingöl province was found to be higher than other provinces in terms of the numbers of goats, it was determined that Malatya province had the lowest values. When analyzed by year, the numbers of buffalos in the provinces of the TRB1 region for the years 2004-2006 was found to be higher than the following years. In other words, it is understood that the numbers of buffalos has been decreasing in the TRB1 region since 2007. In the TRB1 region, goat numbers between 2012-2023 were found to be higher than those between 2004-2011. Accordingly, it can be said that there has been an increase in the number of goats in the TRB1 region since 2012. In the TRB1 region, appropriate regulations need to be made, taking into account the differences between provinces and years in terms of the numbers of buffalos and goats. In this study, it was seen that cluster analysis could be used successfully in determining the differences in animal numbers according to provinces and years.
AtıfOpenAlex3TR Dizin3
İncele - MakaleAçık Erişim2024Scopus SJRQ2Seed content and its oil composition in walnut cultivated from Tunceli, Türkiye
Aydin, Caglar Mert; Güven, Alper
The study is intended to shed light on walnut species cultivated in Tunceli province in 2022 and the oils produced from Juglans regia Fernor walnuts. Physicochemical properties of walnuts and fatty acid composition of the oils produced from the walnuts were identified. In addition, nutritional indexes and bioactive compounds of the oils were determined.Overall, physicochemical properties of the seeds belonging to walnuts significantly changed according to the variety. The major component in walnut seeds was found to be oil content. Saturated (SFA), monounsaturated (MUFA) and polyunsaturated (PUFA) fatty acid ratios of the walnuts were varied according to the type of seed. Characterization of fatty acid composition in the oils from the walnuts was performed according to 6 different fatty acid levels. These fatty acids are myristic, palmitic, margaric, oleic, linoleic and linolenic acid. The oils have a refractive index being in the range of 1.4677-1.4694, the iodine value being in the range of 107-109 gms. TPC (total phenolic content) and DPPH antioxidant activity of the oils significantly changed according to the variety. TPC of the oils were found in the range of 0.33-1.53 mg GAE/g oil and DPPH antioxidant activity of the oils were in the range of 13.04-5.42 mg TE g(-1) oil. All walnut oils showed Newtonian flow behavior. The nutritional indexes including UI (Unsaturation index), IA (Atherogenicity index), IT (Thrombogenicity index) and HH (Hypocholesterolemic/hypercholesterolemic ratio) were determined to significantly change according to the variety, except for IT. It could be stated from the results that Nazimiye walnut seed oil has healthier effects on human health.
AtıfOpenAlex3
İncele - Derleme MakaleYalnız künye2014Bitki doku kültürlerinde sekonder metabolit sentezi
Güven, Alper; Gürsul, Işıl
Bitki doku kültürlerinden elde edilen ikincil metabolitler, insan sağlığı açısından önemlidirler. Bu nedenle, son on yılda ikincil metabolitlerin sentezlenmesi ve fermentörlerde üretimi üzerindeki çalışmalar hız kazanmıştır. İkincil metabolitler biyoaktif özellikleri olan bileşenlerdir. Özellikle tıp ve eczacılık alanlarında kullanılırlar. Gıda endüstrisinde ise katkı maddesi, fonksiyonel gıda bileşeni veya besin takviyesi açısından önemlidirler. İkincil metabolitlerin bitkiler tarafından üretilmesi meteorolojik koşullara, coğrafi konuma ve yetiştirme koşullarına bağlıdır ve pek çok bitki ancak belirli mevsimlerde yetişip olgunlaşabilir. Bitki yerine bitki hücrelerinin uygun koşullarda biyoreaktörlerde üretilmesi bitkisel unsurların doğanın sunduğu parametrelerden bağımsız üretimini sağlar. Dolayısıyla, ikincil metabolitlerin tam bitkiden bağımsız üretimi piyasaya arzda süreklilik sağlar, üretim verimini artırır ve ikincil metabolitler belirli spesifikasyonlara sahip endüstriyel ürünler niteliğine kavuşur. Bitkilerin totipotensi özelliği, bir bitki hücresinden organizmanın üretilebilmesine olanak sağlar. Bitki doku kültürleri hayvan dokularıyla karşılaştırıldığında totipotensi özelliğinden dolayı hedef alınan metabolitler daha çok ve daha hızlı üretilebilirler. Ancak, bitki doku kültürlerinin ikincil metabolit sentezlediği mekanizmalar tamamen bilinmemektedir. İkincil metabolit üretimi ile ilgili bilimsel çalışmaların çoğu laboratuar ölçeği ile sınırlı kalmıştır. Biyoreaktörlerde bitki doku kültürlerinden ikincil metabolit üretimi tarıma dayalı endüstrinin katma değer açısından çok önemli bir unsuru olmaya adaydır. Burada, bu konuda bilimsel çalışma yapmayı hedeşeyenler için bitki doku kültürlerinin gelişim ve ikincil metabolizmalarını etkileyen unsurlarla bitki doku hücrelerinde ikincil metabolizmayı etkileyen stres mekanizmaları ve stres sonucu bitki doku kültürünün uğradığı değişimler özetlenmiştir.
AtıfTR Dizin11İncele