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A Research on the Use of Waste Mandarin Peels as Fixing Agents in Leather Production and Its Effects on Ageing and Colour Full text
2020
Eser Eke Bayramoglu | Fatma Coşkun Topuz | Mehmet Münir Ayana | Samet Soylu
In this research, the effect of extract obtained from waste mandarin peels on inhibition or retardation of ageing of the leather was investigated. Firstly, mandarin peels were extracted and antioxidant activity of the mandarin peels were detected by using of DPPH method. This antioxidant method is based on DPPH that is a purple stable compound, inhibition with sample compound. Extracted mandarin peel samples were read by spectrophotometer at 517 nm wavelength. At final, antioxidant activity of mandarin extract was determined as 65 µM TE/g. The mandarin extract treated with leather after formic acid fixation as a fixator. Goat leathers were kept under 80°C/UV for 72 hours for aging process and the colour values of initial and hindermost leathers were measured with using of Konica Minolta CM 3600d Brand spectrophotometer. L*, a*, b* and ΔE values of the samples were calculated. At the end of the study, it was found that mandarin extract was a natural antioxidant and if it was used as a fixator it could have aging retardant effect at the leather production. Also, it was determined that the use of waste mandarin peels extract increases the brightness of the leather. The difference between the colour values of the leather samples in which the extract was used and not used was found statistically significant.
Show more [+] Less [-]Karpuz Çekirdeklerinin Bazı Kimyasal Özellikleri ve Kavurma İşleminin Karpuz Çekirdeği Yağının Oksidasyonu Üzerine Etkisi Full text
2020
Deniz Köçeroğlu | Tahir Yücel | Emre Bakkalbaşı | İsa Cavidoğlu
Türkiye kuruyemiş üretimi ve tüketimi açısından dünyanın önde gelen ülkeleri arasında yer almakta ve birçok ürün kuruyemiş olarak kullanılmaktadır. Bu ürünlerden biri de karpuz çekirdeğidir. Bu çalışmada Mardin, Diyarbakır ve Batman illerinden temin edilen ve çerezlik olarak tüketilen karpuz çekirdeklerinin bazı kimyasal bileşenleri belirlenmiştir. Ayrıca Batman ilinden temin edilen karpuz çekirdekleri 140, 160 ve 180°C’de 60 dakika boyunca kavrulmuş ve kavurma işleminin karpuz çekirdeği yağının oksidatif stabilitesi üzerine etkileri araştırılmıştır. Karpuz çekirdeklerinin kuru madde, kül, yağ, protein, toplam tokoferol ve toplam fenolik madde miktarlarının sırasıyla %95,39-95,58, %3,10-3,38, %51,65-52,75, %32,76-34,87, 360,12-393,16 mg/kg ve 427,75-478,80 mg GAE/kg yağsız kısım aralıklarında değiştiği tespit edilmiştir. Karpuz tohumlarının yağ asidi bileşimi incelendiğinde ise elzem yağ asidi olan linoleik asit açısından (%60,74) önemli bir kaynak olduğu ve oleik asidi de (%20,48) yüksek miktarda içerdiği belirlenmiştir. Yapılan çalışmada karpuz çekirdeklerinin yağ asidi bileşiminin kavurma işleminden etkilenmediği ve peroksit sayısının ise 1,57- 3,0 meq O2/kg yağ olarak dar bir aralıkta değiştiği gözlenmiştir. Buna karşın kavurma sıcaklığının, örneklerin peroksit değeri üzerindeki etkisi istatistik açıdan önemli bulunmuştur. K232 değerleri örneklerde kavurma süresince 2,54 ile 4,01 arasında değişirken, K268 değerleri ise 4,99 ile 5,04 arasında değişmiştir. 180°C’de kavrulmuş örneklerin K232 ve K268 değerleri 140 ve 160°C’de kavrulmuş olanlardan istatistiksel olarak farklı bulunmuştur. Çalışma sonucunda karpuz çekirdeklerinin elzem yağ asidi olan linoleik asidi önemli miktarlarda içerdiği ve kavurma işleminin yağ oksidasyon parametrelerinde düşük düzeylerde değişimlere neden olduğu tespit edilmiştir.
Show more [+] Less [-]Antimicrobial and Phytochemical Activity of Coconut Shell Extracts Full text
2020
Gebila Mazaya | Karseno Karseno | Tri Yanto
Coconut shell extract contains phytochemical compounds tannins, saponins and steroids which are thought to act as antimicrobial compounds. This makes coconut shell extract has great potential as a natural preservative, one of which is the natural preservative coconut sap. This study aims to know the effect of coconut shell type, extraction time, extraction temperature and the combination of the three treatments on the antimicrobial activity and phytochemical extracts produced. This study using a Randomized Block Design (RBD). The factors tested were coconut shell type consisting of: fresh old coconut shell; dry old coconut shell; fresh young coconut shell; dry young coconut shell; length of extraction time consisting of: 3 and 5 hours’ extraction time, and extraction temperature consisting of: 28°C and 70°C. The variables observed in this study include microbiological and phytochemical variables. The results showed that all type of coconut shell extract contains phytochemical compounds such as tannin, saponins, and some samples contain steroid compounds and had the ability of antimicrobial activity, especially in the bacterium A.aceti. The combination of a dry old shell with an extraction time of 3 hours and extraction temperature of 28°C has the highest antimicrobial activity against A.aceti bacteria with inhibition zone diameter of 13.25 mm, positive containing phytochemical compounds tannins, saponins and steroids and contains total phenol levels of 18.67 mg/100g.
Show more [+] Less [-]Analysis of Various DNA Barcodes on the Turkish Protected Designation of Origin Apricot “Iğdır Kayısısı” (Prunus armeniaca cv. Şalak) Full text
2020
Kaan Hürkan
Identifying the originality and detecting the authentication of the processed and unprocessed commercial food products ensure food safety. Food adulteration of food products with high commercial value by cheap additives could threaten human health. In this study, we generated and tested five DNA barcodes (ITS, LEAFY, matK, rbcL, ycf1) of the Turkish Protected Designation of Origin Apricot “Iğdır Kayısısı” (Prunus armeniaca cv. Şalak) with related primer pairs. The generated barcodes were deposited on the GenBank database. The results showed that nuclear originated ITS and LEAFY barcodes discriminated the Prunus species and cultivars better than the plastidial barcodes. Due to plenty of ITS barcodes on the databases, and good results in our study we recommend using ITS to identify Prunus species and cultivars.
Show more [+] Less [-]Tillage Method and Residual N, P, K, Zn, B, Mg, Ca, and S Nutrients Effect on Growth and Yield of Dry Bean Grown after the Harvest of Maize Full text
2020
Hillary Moses Omondi Otieno | George N. Chemining’wa | Shamie Zingore | Charles K. Gachene
Common bean (Phaseolus vulgaris L.) production is constrained majorly by drought and low soil fertility in Kenya. These limitations have never been adequately approached due to financial challenges and lack of better technology. A study was carried out in Kirinyaga and Embu Counties to evaluate the effects of tillage method and residual fertilizers on yield performance of dry bean. Dry bean was grown in the short rains season on plots preceded by fertilized maize (Zea mays L.) grown in the long rains season. The trials were laid out in a randomized complete block design with a split-plot arrangement. The tillage methods, NT+CR and CT-CR, where NT: No-tillage, CT: Conventional tillage, and CR: Crop residue, were assigned the main plot and residual fertilizers (NK, NP, PK, NPK, and NPK+CaMgZnBS) the subplots. The results showed that there was 35% and 46% more water retention under NT+CR than under CT-CR system in Embu and Kirinyaga sites, respectively. NT+CR produced higher biomass, more number of pods per plant, number of seeds per pod, and 1000-seed weight. Plots with residual NPK+ZnBMgCaS yielded higher biomass at 60 DAE, number of seeds per pod, 1000-seed weight and grain yield than plots with other treatments. The residual NPK+ZnBMgCaS and NPK treatments out yielded PK treatment by 600 kg ha-1 and 370 kg ha-1 (Embu) and by 710 kg ha-1 and 330 kg ha-1 (Kirinyaga), respectively. Based on these results, cultivation of dry bean on residual fertilizer nutrients solely or in combination with no-till and crop residue retention after maize harvest has the potential to improve the yields and food security among farmers in the region.
Show more [+] Less [-]Sığır Karkaslarının Kalite Sınıflandırılmasında Kullanılan S-Europ Sistemi ve Karkas Derecelendirmesinde Kullanılan Görüntüleme Yöntemleri Full text
2020
Servet İnaç | Ali Gücükoğlu
Kalite ve verim açısından karkas sınıflandırmasını sağlayacak olan bilgilerin net olarak elde edilebilmesi ancak hayvanların kesimi ve kesim sonrası ölçümlerin yapılması ile mümkün olabilmektedir. Kesim öncesinde yapılan öznel değerlendirmeler kesim sonrası için sadece birer öngörü ve tahmin niteliği taşımaktadır. Ancak kesim sonrasında nesnel yöntemler ile yapılan ölçüm ve değerlendirmeler sonucunda net bilgiler elde edilebilmektedir. Doğal olarak bu durum bir sınıflandırma sisteminin varlığını, görüntüleme sistemlerini, ölçüm sistemlerini, nitelikli ve bilimsel işgücü varlığını beraberinde getirmektedir. Karkas sınıflandırma sistemindeki eksiklikler hayvancılık ve gıda sektörü açısından önemli ekonomik kayıplara neden olmakla beraber tüketiciler açısından da lezzet, hedefe uygun beslenememe ve fiyatlandırma gibi birçok sorunu beraberinde getirmektedir. Bu derlemede; Türkiye’de sığır karkaslarının sınıflandırılmaları ve derecelendirmeleri ile ilgili mevcut durum, Avrupa Birliği ülkelerinde sığır karkas sınıflandırma ve derecelendirilmesi amacıyla kullanılan “S-EUROP” sistemi hakkında bilgilendirme ve karkas konformasyonu, yağlanma durumu ve karkas kompozisyonlarının belirlenmesi için kullanılan görüntüleme yöntemlerinden Ultrason, Bilgisayarlı Tomografi (BT), Manyetik Rezonans (MR), X-Ray Absorptiyometri, Optik Problar ve Video Görüntüleme Analizi (VIA) konuları hakkında bilgi verilmesi amaçlanmıştır.
Show more [+] Less [-]Estimation of Drought by Streamflow Drought Index (SDI) and Artificial Neural Networks (ANNs) in Ankara-Nallihan Region Full text
2020
Tülay Akkurt Eroğluer | Halit Apaydin
In this study, it is aimed to predict drought in Nallihan region by using streamflow drought index and artificial neural network method which is a part of artificial intelligence approaches. The measured data of some meteorological stations (Nallihan, Beypazari, Mihaliccik, Catacik, Goynuk, Mudurnu, Seben and Eskisehir) in the Sakarya Basin and the Nallihan streamflow observation station between 1996 and 2015 were used to forecast 2015-2030 streamflow values. The correlation coefficient in the education and test stages of the ANN model was realized with a high consistency of 0.990 and 0.967, respectively. According to the mean absolute error method, the error performance values of ANN model are 0.19 for the training phase and 0.26 for the test phase. Cumulative streamflow series were created for the reference periods (k1, October-December; k2, October-March; k3, October-June; k4, October-September) and the streamflow drought index values were obtained using measured and predicted values. According to these values, mild droughts were more frequent between 1997-2015 and 2016-2030, but the number of moderate and severe droughts increased gradually. It is predicted that in the future, it may be seen in extreme arid periods in the region. Drought in the 6-month period between October and March is similar to the average of all periods for 1997-2015 and 2016-2030. The use of 6-month drought data for the streamflow drought index is expected to be useful in predicting future drought.
Show more [+] Less [-]Awareness and Attitude towards Functional Dairy Products among Consumers in Western Province of Sri Lanka Full text
2020
Narayana Mudiyanselage Nayana Kumari Narayana | Sanjeewa Fernando | Gangani Chandima Samaraweera
Functional foods are the foods that provide health benefits beyond the basic nutrition. Dairy products have a prominent position in the functional food market. However, market share for functional dairy products in Sri Lanka is low compared to most of the countries in the world. Awareness of consumers and attitude towards a healthy life is essential for market success of functional dairy products. Therefore, a study was conducted to investigate the status of awareness of and attitudes towards functional dairy products among consumers from Western Province of Sri Lanka. The study was conducted using a pre-tested structured questionnaire during June to November 2018, with the participation of 307 purposively selected consumers. Information on consumers’ tendency towards a healthy life style, awareness and perception on health benefits of functional foods and dairy products, confidence on different information sources etc. were recorded. SPSS statistical software package was used for the data analysis. The empirical findings showed that the consumers still concern about taste and cost rather than health when buying food products. Consumer age showed a significant (χ2=19.41, p
Show more [+] Less [-]General Characteristics of Seeds of Some Anise (Pimpinella anisum L.) Lines and Effects of Film Coating on These Seeds Full text
2020
Zeynep Dumanoğlu | Çiğdem Sönmez | Mehmet Fatih Çakır
Anise (Pimpinella anisum L.), is a plant which has an important place in the economic sense in medicinal and aromatic plants. Such as health, food, cosmetics are among the leading materials in the use of many sectors. The production of plant materials obtained from seeds obtained from enduring and strong lines is facilitated with the increasing number of studies. Therefore, the characteristics of the lines from which the seeds come must be demonstrated. In this study, four different anise line (Spain, Egypt, Syria, Turkey) some characteristics of by seed (figure-size, surface area, projection area, average geometric and arithmetic diameter, sphericity, thousand grain weight, average germination percentage and time) It was investigated. At the same time, the film coating was applied to the seeds and the changes in these properties of the seeds were determined. The data obtained were also examined statistically.
Show more [+] Less [-]Effects of Using Hazelnut Husk, Wood Shaving and of the Mixture at Different Thicknesses on Broiler Performances, Some Organ Weights, Foot-Pad Dermatitis and Litter Traits Full text
2020
Musa Sarıca | Kadir Erensoy
This study was carried out to determine the effects of the use of hazelnut husk (HH), wood shavings (WS) and the mixture of 50% hazelnut husk + 50% wood shavings (MIX) in two different thicknesses (4 and 8 cm) as a litter material in broiler production. The experiment was carried out as a factorial experimental design (3 litter type and 2 thickness) and stocking density was 10 chickens per m2. At 6 wk. of age, the effect of litter types and thicknesses on broiler live weights, feed efficiency, and livability, were not significant. Also, no differences were found in terms of gizzard, digestive tract, abdominal fat and edible internal organ weight percentages. While carcass yield varied between litter groups, there was no difference between litter thicknesses. The litter moisture levels at the end of the trial were not affected the litter type and litter thickness, while the foot pad dermatitis (FPD) rates were significantly affected. The highest FPD levels were determined in the HH litter and 4 cm thickness. As a result, the use of HH, WS and MIX of them with a thickness of 4 and 8 cm had no effect on other traits except for FPD levels. It has been observed that these litter materials may be used successfully in broiler production and use of 8 cm thickness litter has minor positive effects except that the cost of litter has doubled.
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