Yazarlar
- Aglar, Erdal(14)
- Benzer, Fulya(14)
- Kocabaş, Mehmet(13)
- Sabanci, Serdal(12)
- Özçiçek, Esin(12)
- Icier, Filiz(10)
- Karaca Sanyürek, Nesrin(10)
- Kutluyer, Filiz(10)
- Kuzgun, Nermin Karaton(10)
- Topal, Murat(9)
- Aksu, Önder(8)
- Can, Erkan(8)
- Cevik, Mutlu(8)
- Kayim, Murathan(8)
- Dikici, Abdullah(7)
- Karakavuk, Emrah(7)
- Kizak, Volkan(7)
- Kocabas, Mehmet(7)
- Macit, Arife(7)
- Ozturk, Burhan(7)
- Öbek, Erdal(7)
- Erişir, Mine(6)
- Ertekin, Özlem(6)
- Gundogdu, Muttalip(6)
- Ince, Muharrem(6)
- Omac, Basri(6)
- Sabancı, Serdal(6)
- Yaman, Mehmet(6)
- Aydın, Sevinç(5)
- Erguven, Gokhan Onder(5)
- Erisir, Mine(5)
- Erol, Nida Demirtas(5)
- Goksu, Ali(5)
- Kizil, Mevlude(5)
- Kutluyer Kocabaş, Filiz(5)
- Serdar, Osman(5)
- Yilmaz, Ökkeş(5)
- Çimen, Murat(5)
- Şeker, Engin(5)
- Altınterim, Başar(4)
Yayınlar
- MakaleYalnız künye2017Scopus SJRQ2Concentration of apple juice using a vacuum microwave evaporator as a novel technique: Determination of quality characteristics
Bozkir, Hamza; Baysal, Taner
This study was evaluated the use of a novel concentration technique, a vacuum microwave evaporator (VME) in the production of clear apple juice concentrate and the investigation of its effects on the quality characteristics of the juice. The optimum processing conditions of the VME for apple juice concentrate were determined using response surface methodology. The apple juice concentrate was produced by VME, a rising film evaporator (RFE), and a rotary evaporator (RE) at the optimum process conditions. The results show that the evaporation rate of VME was three times higher than that of RE and was two times higher than that of RFE. VME produced minimum changes in the color of the apple juices (L*, a*, b*, ΔE, Hue°, and ΔC) compared to RE and RFE. VME was also found the best group that preserved the quality characteristics of apple juices (TTA, NEBI, and TPC) compared with conventional evaporation methods. Practical applications: Microwave heating provides volumetric heating of food. The concentration carried out quickly with the combined system, microwave and vacuum, which allows mass and energy transfer quickly at a short time. The physicochemical, and biochemical properties of the concentrated apple juices processed using VME were found to be better than those of the juices produced using the other conventional methods. The obtained data can be useful for optimization of fruit juice concentrate production in industrial concentration processes.
AtıfScopus62WoS59OpenAlex70
İncele - MakaleYalnız künye2017Scopus SJRQ1Heavy metal and arsenic concentrations in rainbow trout (Oncorhynchus mykiss) farmed in a dam reservoir on the Firat (Euphrates) River: Risk-based consumption advisories
Varol, Memet; Kaya, Gülderen Kurt; Alp, Alper
The concentrations of ten metals in rainbow trout (Oncorhynchus mykiss) farmed in the Karakaya Dam Reservoir (Turkey) on the Firat River were determined. The metal concentrations in rainbow trout did not exceed the maximum permissible levels. Biomagnification factors (BMF) of ten metals were < 1, indicating that these metals were not biomagnified. The estimated daily intake (EDI) of each metal was much lower than the respective tolerable daily intake (TDI). The target hazard quotient (THQ) for individual metal and total THQ for combined metals were lower than 1, indicating no health risk for consumers due to the intake of either individual metal or combined metals. The cancer risk (CR) value for toxic inorganic As was below 10–6, indicating no carcinogenic risk. According to the calculated maximum allowable consumption rates (CRmm), an adult may safely consume 28 meals of rainbow trout from the dam reservoir per month with no adverse carcinogenic and non-carcinogenic health effects. According to these results, the consumption of rainbow trout farmed in this dam reservoir is completely safe for human health.
AtıfScopus193WoS169OpenAlex201
İncele - MakaleAçık Erişim2017Scopus SJRQ3Determining the phytochemical parameters of pisum sativum (Pease) and effects on the development of debaryomyces hansenii
Erecevit, Pınar; Kırbağ, Sevda
Objective: In this work; phytochemical parameters (fatty acid, vitamin, phytosterol, flavonoid and resveratrol contents, and antioxidant activities antimicrobial activities) of Pisum sativum (pease) extracts prepared with Debaryomyces hansenii were detected. P. sativum (pease) is known as one of the nutritional sources of prebiotics. Methods: Phytochemical contents of extracts were evaluated with device and assays like Shimadzu 17, Shimadzu brand HPLC, Spectrophotometer device and well agar methods respectively. Results: it was observed that total fatty acid, flavonoid, contents in pease extracts were at low levels and vitamin, and phytosterol contents were at changing. It was detected that total fatty acid, vitamin and phytosterol contents; at significant rates of pease extracts prepared with D. hansenii; however, flavonoid contents decreased at different rates. In the work, it was noticed that pease had increasingly antioxidant activities and antimicrobial activities at changing rates, acordingly at fatty acid, vitamin and phytosterol levels; at significant rates increased. On the other hand, flavonoid extracts demonstrated scarcely any antimicrobial activity. When antimicrobial activities of pease extracts containing D. hansenii were analyzed, they had effect at increasing rates of fatty acid, vitamin and phytosterol. On the other hand, it was demonstrated that flavonoid extracts did not have any antimicrobial activity against all of the microorganisms except Bacillus megaterium DSM 32. Conclusion: it was detected that pease which is known as prebiotic food, can be used in terms of proper prebiotic and the relationship of proper prebiotic-prebiotic (symbiotic) for the development of D. hansenii used in this study which is also accepted as probiotic yeast. It was observed that this yeast type developing in extracts obtained from pease affected other beneficial nutrients such as vitamins, minerals, phenolic compounds at varying rates.
AtıfScopus2WoS1OpenAlex2İncele - MakaleAçık Erişim2017Scopus SJRQ2The ability of Phanerochaete chrysosporium (ME446) on chemical oxygen demand remediation in submerged culture medium supplemented with malathion insecticide
Erguven, Gokhan Onder; Yildirim, Numan; Adar, Elanur
This present study aims to evaluating the efficiency of P. chrysosporium (P.c) to degrade the different concentrations of malathion (MLT) (50, 100 and 150 ppm) under agitated (130 rpm) submerged culture conditions via reduction of chemical oxygen demand (COD). We have previously screening the growth of fungus in sabouraud dextrose agar (SDA) medium for 6 days. We have also determined the laccase activity during degradation process for 15 days. According to our results the fungus has achieved 99.6, 98.8 and 98.7 % COD reduction at concentration of 50, 100 and 150 ppm respectively the end of the 15 days. The highest laccase activity (180 ± 5.69 U/L) was measured at concentration of 50 ppm the end of the 15 days and the lowest activity (36 ± 3.26) was determined at concentration of 150 ppm the end of the 15 days. The dried biomass of fungus was weighted at end of the 15 days and we have determined that malathion in culture medium reduced the biomass production compared the control group (SDB + P.c). Our results showed that, P. chrysosporium could be an effective bioremediation tool for treatment of malathion containing wastewater.
AtıfScopus11WoS11OpenAlex13İncele - MakaleYalnız künye2017Scopus SJRQ3Characterization of antioxidant activity, vitamins, and elemental composition of ciris (Asphodelus aestivus L.) from Tunceli, Turkey
Unal, Ilkay; Kaplan Ince, Olcay
Ciris (Asphodelus aestivus L.), which has been used for a wide range of medicinal purposes and is indigenous in Tunceli, Turkey, was collected from the eastern and western parts of the city. The goal of this study was to determine the vitamins, essential elements, and antioxidant activity of this natural product. The 2,2-diphenyl-1-picrylhydrazyl-hydrate radical scavenging activity, metal chelating activity, reducing power, total phenolics, and Vitamin A, Vitamin C, sodium, potassium, phosphorus, magnesium, calcium, copper, manganese, and zinc concentrations were determined in ciris extracts. The concentrations of Vitamin A, Vitamin C, and Mn of ciris from west Tunceli were higher than samples from the east.
AtıfScopus7WoS7OpenAlex8İncele - MakaleYalnız künye2017Scopus SJRQ1Ohmic heating assisted vacuum evaporation of pomegranate juice: Electrical conductivity changes
Icier, Filiz; Yildiz, Hasan; Sabanci, Serdal; Cevik, Mutlu; Cokgezme, Omer Faruk
A novel electrical heating method, named as ohmic heating, was successfully integrated to vacuum evaporation system, and pomegranate juice was concentrated until its total soluble dry matter content reached to 40% by applying three different voltage gradients (7.5, 10, and 12.5 V/cm) at 180 mm Hg absolute pressure in this system. Total evaporation times were determined as 152, 78, and 53 min at the voltage gradients of 7.5, 10, and 12.5 V/cm, respectively. The concentration time of pomegranate juice was shortened about 56% by ohmic heating relative to conventional evaporation. The electrical conductivity values were increased up to reach 25% TSDM for 7.5 V/cm and at 35% TSDM for 10 V/cm, then showed a decreasing pattern. However, it was constant (0.55 ± 0.01 S/m) during evaporation process at 12.5 V/cm. It is recommended that the ohmic heating method could be successfully integrated to vacuum evaporation process to shorten the processing time significantly. Industrial relevance Ohmic heating has been utilized as alternative method for the purpose of heating, pasteurization, cooking etc., and relatively better products can be obtained by ohmic heating. Nowadays, energy efficient systems are needed in concentrated juice production. The integration of ohmic heating to the conventional vacuum systems could serve the production high quality juice concentrates with efficient use of energy. In present study, ohmic heating assisted vacuum evaporation of pomegranate juice was conducted, successfully. This method decreased the total process time for juice concentration, which is critically important for industrial scale productions. This novel method can be implemented to the fruit juice production lines by taking into account of design characteristics of ohmic systems such as electrical conductivity changes depending on both temperature and total soluble solids concentration. The effects of main process parameter, named as voltage gradient, on electrical conductivity changes during electrical heating assisted evaporation process has been also reported in the present study.
AtıfScopus93OpenAlex97İncele - MakaleYalnız künye2016Yüksek Ekonomik Değeri Olan Bazi Su Ürünlerinde Listeria monocytogenes Kontaminasyonunun Giderilmesi için Nisin ve Gama Işınlama Kombinasyonlarının Etkisi
Dikici, Abdullah; Koluman, Ahmet
Küresel tüketimde balık ve diğer su ürünleri önemli rol oynamaktadır. Deniz ürünleri diğer ürünlerle kıyasla daha fazla Listeria monocytogenes kontaminasyonu riski taşımaktadır. L. monocytogenes riski belirli üretim yöntemleri ile düşürülmelidir. Çeşitli çalışmalar Nisin uygulamasının tek veya kombine olarak farklı koşullardaki farklı gıdalarda etkili olduğunu göstermiştir. Bunlara ek olarak, gama ışınlama su ürünlerinde raf ömrünün uzatılması ve patojenlerin dekontaminasyonu için belirgin bir potansiyele sahiptir. Farklı dört adet ekonomik değeri yüksek ürüne gama ışınlaması Nisin içerecek veya içermeyecek şekilde uygulandı. Sonuçlara göre Nisin uygulanmamış gruplarda L. monocytogenes 5 kGy ışın dozu ile eradike edilebilirken, Nisin kombinasyonu uygulanması gereken dozu 3 kGy seviyesine çekmiştir. Buna bağlı olarak farklı su ürünlerinde, Nisin ve ışınlama kombinasyonlarının L. monocytogenes kontaminasyonunun giderilmesinde beraber uygulanmasının verimli olacağı düşünülmüştür.
AtıfOpenAlex1TR Dizin1
İncele - MakaleYalnız künye2016Scopus SJRQ1Pulsed electric fields on phenylalanine ammonia lyase activity of tomato cell culture
Gürsul, Isil; Gueven, Alper; Grohmann, Anne; Knorr, Dietrich
Pulsed electric field (PEF), among numerous stresses, provides a large potential as an external stimulus to enhance secondary metabolite biosynthesis from plant cell cultures. PEF treatment was combined with the sub-culturing technique to increase phenylalanine ammonia lyase (PAL) activity, the key enzyme for secondary metabolite synthesis from tomato cell culture. In reference to the analysis, maximum accumulation of total phenolic (TP) compounds in the cells was determined as a function of stress reaction time (SRT). Also, PEF application increased PAL activity. PEF resulted in an increase in the porosity of the cell membrane, thus decreasing cell vitality. On the other hand, SRT decreased vitality, while increasing TP content. Sub-culturing enhanced the cell structure and improved the cell membrane permeability. PEF treatment potentially offers an alternative to other methods for increasing PAL activity in plant cell cultures. (C) 2016 Elsevier Ltd. All rights reserved.
AtıfWoS20OpenAlex27İncele - MakaleYayıncıda açık erişim2016Scopus SJRQ3Determination of Drying Kinetics of Tunceli Garlic with Microwave Drying Technique
Yogurtçu, Hakan
In this study, drying kinetics of 4 mm-thick slices of Tunceli garlic (Allium tuncelianum) was investigated by using microwave technique at an interval of 90-600 W microwave output power. Ten mathematical models were used to represent the experimental data in this study. The determination of coefficient (R-2), root mean square error (RMSE), chi-square (chi(2)) and percentage error (E%) values that show compatibility to these models were determined. The determination of coefficient (R-2) values were found to vary at an interval of 0.9440-0.9993. The Midilli et al model was determined to be the best model that represents the experimental data. It was seen that drying rate increases with the increase in microwave output power (P) and decreases with the increase in sample mass (m). Effective diffusion coefficients (D-eff) and drying rate constants (k) were determined for different sample masses at microwave output power of 90 W. Activation energies for both effective diffusion coefficients and drying rate constants were determined by using an Arrhenius type exponential equation. Activation energies from effective diffusion coefficients and drying rate constants were found as 3.85 W g(-1) and 3.99 W g(-1) respectively.
AtıfWoS2OpenAlex3İncele - MakaleYayıncıda açık erişim2016Scopus SJRQ3Oxidative stress and some biochemical parameters during starvation and refeeding in Astacus leptodactylus (Esch., 1823)
Barim-Oz, O.; Sahin, H.
This study was conducted to determine the effect of starvation (78 days) and refeeding (33 days) on oxidative stress (malondialdehyde (MDA)), antioxidants (superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), glutathione peroxidase (GSH-Px)), arginase (AR) and nitric oxide (NO) in the hepatopancreas, muscle and gills tissues of freshwater crayfish (Astacus leptodactylus). Crayfish were maintained at three experimental groups: control (fed), starved (not fed) crayfish for 78 days and refeeding crayfish for 33 days after 78 days starvation. The biochemical analysis in the tissues were measured at 3, 18, 33, 48, 63 and 78 days of starvation and feeding and at 3, 18 and 33 days of refeeding. In the all periods, the MDA levels were significantly higher in tissues of starved crayfish than the control ones. Significant changes in the MDA levels were also observed amongst starvation times. In the tissues of starved crayfish was significantly higher SOD, CAT, GR and AR activities when compared to control crayfish. The GSH-Px and NO activity showed increases and decreases in different starvation periods according to control group. The parameters measured returned to control values after 33 days of the refeeding. Collectively, the present study indicated that starvation induces MDA, SOD, CAT, GSH-Px, GR, AR and NO activity in the tissues, and A. leptodactylus exposed to starvation can be withstand 78 days.
AtıfWoS8OpenAlex14İncele - MakaleAçık Erişim2016Scopus SJRQ3The influence of dietary antioxidant on ovarian eggs and levels of vitamin E, C, A, astaxanthin, β-carotene and oxidative stres in tissues of Astacus leptodactylus (Eschscholtz)
Barim-Oz, O.; Sahin, H.
The experiment was conducted to determine the most effective antioxidant (among the vitamin E (VE), vitamin C (VC), vitamin A (VA), astaxanthine (AX), beta-carotene (beta C)) on the ovarian egg number and size, level of VE, VC, VA, AX, beta C and oxidative stress (as malondialdehyde (MDA)) in the hepatopancreas, ovarian, gills and muscle tissue during ovarian development of Astacus leptodactylus. One control (C) and five experimental diets (EE, EC, EA, EAX and E beta C) were prepared. The EE, EC, EA, EAX and E beta C groups were formed by added 150 mg kg-1 VE, 200 mg kg-1 VC, 240 mg kg-1 VA, 200 mg kg-1 AX and 200 mg kg-1 beta C to diet C, respectively. At the end of the experiment found that the dietary antioxidants increased ovarian egg number and size and reduced the level of MDA in the tissues. Ovarian egg number and size were highest in the EE and EAX diet groups in the comparison to control (p< 0.001). The level of MDA in the tissues was lowest in the EAX diet group in the comparison to control (p< 0.001). The highest levels of VE, VC, VA, AX and beta C were found in the hepatopancreas and ovarian compared with muscle and gills. The highest level of MDA also was determined in the ovarian according to other tissues. In conclusion, the VE and AX in broodstock diets were the most effective antioxidants on the ovarian egg number and size of A. leptodactylus.
AtıfWoS16OpenAlex53İncele - MakaleYalnız künye2016Scopus SJRQ3Production Optimisation of a Land-Based Trout Farm and the Reduction of its Environmental Effects
Guner, Yusuf; Kizak, Volkan; Saygi, Hulya; Turan, Gamze; Tekogul, Hatice; Karacalar, Ulviye; Gulec, Fatih; Hekimoglu, Muge
In this study, certain water quality parameters (water temperature, dissolved oxygen (DO), pH, total inorganic nitrogen (TIN), phosphate (PO4), nitrite (NO2), nitrate (NO3), ammonium (NH4), and (BOD5) in the effluents and the efficiency of the treatment systems for eliminating wastes at a commercial trout farm with a capacity of 10 tons/year in Izmir (Kemalpasa) were examined. The DO, temperature, pH, TIN, PO4, NO2, NO3, and BOD5 measured, were different in the outlet waters when compared with the inlet waters (p<0.05). The settling basin did not reduce the TIN and PO4, on the contrary, it caused an increase in the nitrogen (N) up to 19.9% and phosphorus (P) up to 20.30%, while the wetlands reduced the N, P, and BOD5 up to 53.2%, 58.2%, and 36.5%, respectively (p<0.05). According to the chemical and biological methods, the averages of the TIN and P loads for one tone of cultured trout without treatment were estimated to be were 80 kg and 7 kg, respectively. The annual TIN load of this trout farm was estimated to be 21.3 kg while the TP load was 2.9 kg for one tone of cultured trout when the treatment efficiency was taken into account. The microbiological analyses conducted with the effluent waters showed that the rate of aerobic mesophilic bacteria was found to be high in the summer but low in the winter. It was also detected that the coliform group bacteria were present in the environment in the summer while their occurence was with-in standards in the winter. Interactions of the 9 water quality parameters were identified through the linear regression analysis in order to reduce the environmental effects of the facility DO=28.296 - (0.248 x BOD5)- (2.948 x pH) + (0.189 x temperature) + (0.851 x inlet water) + (0.163 x winter) (R-2=0.912). According to this model, the DO values were increased by the temperature, inlet water and the winter season while reduced by the BOD5 and pH. The dissolved oxygen content in the wetland outlet water was measured as being high because of the nutrient and temperature rises which boosted photosyntesis. It was concluded that using mechanical settling methods were inadequate to minimise the nutrients released into the receiving water body so wetlands should be constructed in such a way as to receive the flow of effluents from the trout farms. As a result the quality of water used by the facility has no adverse impact on the aquaculture and environmental ecosystem.
AtıfWoS1OpenAlex1İncele - MakaleAçık Erişim2016Scopus SJRQ3The Effects of Dietary Antioxidants on the Arginase Activity and Nitric Oxide Level of Narrow-Clawed Turkish Crayfish (Astacus leptodactylus, Esch 1823) in Moulting Period
Benzer, Fulya; Özçelik, Mehtap; Yildirim, Nuran Cikcikoglu
The effects of dietary antioxidants (vitamine E, vitamine C, Astaxhantin, beta carotene) on arginase activity and nitric oxide levels of hepatopancreas and muscle of freshwater crayfish (Actacus leptodactylus) were investigated during moulting. 150 mg kg(-1) vitamine E (VE), 200 mg kg(-1) vitamine C (VC), 200 mg kg(-1) Astaxhantin and 200 mg kg(-1) beta carotene were added to experimental diets. A. leptodactylus with these diets were fed with 2% of their total weight daily, in a day during 75 days. Arginase activity was increased in muscle of crayfish fed the diets VC, VE, astaxanthin and beta karoten but in hepatopancreas arginase activity was increased with beta carotene when compared to control. NO levels in muscle were decreased when compared to control but this decrease was not statically significant. NO levels in hepatopancreas of crayfish fed the diets VC and astaxanthin were higher than control groups. Our results demonstrated that dietary antioxidants affect the arginase activity and nitric oxide level of freshwater crayfish (Astacus leptodactylus, Esch. 1823) during moulting.
AtıfWoS3OpenAlex3İncele - MakaleAçık Erişim2016Scopus SJRQ3Spawning and Larval Rearing in Hybrid Striped Bass (Morone chrysops ♀ X Morone saxatilis ♂) in Turkey
Guner, Yusuf; Kizak, Volkan; Altunok, Muhammet; Celik, Ihsan
This study is the first spawning and larval rearing of the F-1 hybrid striped bass (Morone chrysops female X M. saxatilis male) grown in culture conditions in Turkey. The F-1 Hybrid striped bass was fed with commercial pellet feed in floating net cages. They reached the sexual maturity at two years old. Female brood fish were given 30 mu g/kg of LHRH-a (Lutenizing hormone releasing hormone analogue) and male fish given 10 mu g/kg; of CHP(Dried carp pituitary), 4 mg/kg was used for the female and half that amount for the male for induced breeding. The fish injected LHRHa were successfully induced to both strip spawning and tank spawning by a single hormone injection. However, fish injected CPH and saline, untreated control did not spawn. Latency period was found to be 20.41 +/- 0.91 hour. In term of fertilization rate, larval deformity rate no significant difference was found between tank spawning and strip spawning (p>0.05). Fertilization rates ranged from 56.3% to 85.4% and hatch rates were between 0.99% and 46.88%, whereas the level of larval deformities ranged between 81.25% and 100%. Hatched larvae were placed into 400-liter rectangular tanks with water discharge of 4 liter/minute at a stocking density of 30 larvae/liter. After larvae hatching, they were given artemia nauplii for 5-19 days. Trout granule feed (300-500 micron) also started to be given in addition to artemia nauplii afterwards. Granule feed was started eating completely 24 th days. The larvae obtained from a single hatch in the production season reached 2.87 cm length in 32 days with 2.7% survival rate. Of this study was terminated due to white spot disease (Ichtyophthirius multifilis) arising from sudden change in water temperature. The F-2 progenies were not deemed to be available for aquaculture due to poor fertilization, poor hatching, low survival rate and high deformity rate. For the progenies of the hybrid striped bass that grow in natural water, it was suggested that their ecology in waters in Turkey be first studied and brought into aquaculture afterwards.
- MakaleAçık Erişim2016Scopus SJRQ3Monitoring Aclonifen Remediation in Soil with a Laboratory-Scale Research
Erguven, G. Onder; Bayhan, Hurrem; Demir, Goksel; Ikizoglu, Bahar; Kanat, Gurdal
Aclonifen was used as the most preferable type of herbicide which is used in sunflower farming in the Thrace Region. Bacteria and fungi were isolated from the soil samples taken from the Thrace Region, and a mixed culture was prepared from equal volumes (10(8) CFU/mL) of liquid cultures of microorganisms. Including the witness sample, five different setups were prepared, to which Aclonifen, with a concentration of 1900 mu g/L, was added. Each unit was diluted with distilled water for six weeks. The water filtered at this stage was measured for chemical oxygen demand (COD), biochemical oxygen demand, total organic carbon (TOC), and Aclonifen. Additionally, pH and dissolved oxygen measurement was performed. According to the results of the study, the highest bioremediation was observed in the soil sample to which 10 mL of mixed culture of microorganisms was added and Aclonifen, COD, BOD5, and TOC remediation was observed as 93.2%, 97.8%, 98.8%, and 98.7%, respectively.
AtıfWoS11OpenAlex16İncele - MakaleÖn baskısı açık2016Scopus SJRQ1Determination of anthocyanins in cherry and cranberry by high-performance liquid chromatography-electrospray ionization-mass spectrometry
Karaaslan, Nagihan M.; Yaman, Mehmet
Anthocyanins are a group of widespread natural phenolic compounds in vegetables and fruits. The anthocyanins have a wide range of applications due to the antioxidant, anticancer and anti-inflammatory properties. In this study, anthocyanins (delphinidin-3-o-glucoside, cyanidin-3-o-glucoside, pelargonidin-3-o-glucoside and malvidin-3-o-glucoside) in cherry and cranberry were determined using high-performance liquid chromatography-electrospray ionization-mass spectrometry (HPLC-ESI-MS). The anthocyanins were separated using gradient elution and a reserved-phase analytical column before identification by high-performance liquid chromatography-electrospray ionization-mass spectrometry. A high-performance liquid chromatography-electrospray ionization-mass spectrometry method was optimized for the determination of anthocyanins in cherry and cranberry. Furthermore, in this study, we investigated extraction conditions of fruit samples as well as determination of optimum HPLC-ESI-MS conditions. This study is novel in terms of simultaneously examining both optimization of HPLC parameters and extraction conditions. Obtained optimum conditions were used for the determination as the quantitative and qualitative analysis of anthocyanins in cherry and cranberry. The content of anthocyanins on the basis of wet weight in cherry and cranberry samples was determined for delphinidin-3-o-glucoside < d.l. (detection limit) and < d.l., for cyanidin-3-o-glucoside varied from 3.5 +/- A 0.4 to 8.3 +/- A 1.1 mg kg(-1) (average 5.8 +/- A 0.8 mg kg(-1)) and 9.8 +/- A 1.4 to 18 +/- A 3.0 mg kg(-1) (average 13.2 +/- A 1.8 mg kg(-1)), for pelargonidin-3-o-glucoside < d.l. and varied from 136 +/- A 19 to 233 +/- A 35 mg kg(-1) (average 185.3 +/- A 28 mg kg(-1)), for malvidin-3-o-glucoside < d.l. and < d.l., respectively.
AtıfWoS25OpenAlex29İncele - MakaleAçık Erişim2016Scopus SJRQ3Effects of Milk Thistle (Silybum marianum) Seed Supplementation to High-Calorie Basal Diets of Quails on Egg Production, Egg Quality Traits, Hatchability and Oxidative Stress Parameters
Erisir, Zeki; Iflazoglu Mutlu, Seda; Simsek, Ulku Gulcihan; Çiftçi, Mehmet; Azman, Mehmet Ali; Benzer, Fulya; Erisir, Mine
The purpose of this study was to examine the changes to occur in egg production, egg quality traits, hatchability, and oxidative stress parameters of laying quails fed with high calorie diets and effect of milk thistle (Silybum marianum) seed on these changes. A total of 75 45-day-old quails including 60 females and 15 males were used in the study. The quails were divided into 5 groups with three repetitions. 4 females and 1 male were used in each repetition. The groups of the study were arranged as following; control group (C) consuming corn-soybean based basal diet, oil group (SFO) in which 5% sun flower oil was added into basal diet, oil + milk thistle group (SFO+MT) in which 5% sun flower oil + 1% milk thistle seed was added into basal diet, syrup group (CS) in which 10% corn syrup was added into basal diet, and syrup + milk thistle group (CS+MT) in which 10% corn syrup + 1% milk thistle was added into basal diet. Total egg production was found to be significantly higher in SFO and SFO+MT groups of present study (P<0.05). Feed intake, total egg weight and feed conversion were found similar among the groups (P>0.05). The differences among the groups in albumen rate, yolk rate, dried shell rate and shape index were not statistically significant (P>0.05). The best yolk colour was obtained in SFO+MT and CS groups (P<0.01). There were no statistically differences among the groups in hatchability, hatchability of fertile and embrionic mortality (P>0.05), but the difference in examined fertility were statistically significant (P<0.05). Malonyl dialdehyde (MDA) values of blood, liver and heart tissues were similar among the groups of study (P>0.05). MDA level of kidney significantly increased in CS group, however addition of milk thistle seed into diet was reduced MDA level of kidney in CS+MT group (P<0.01). High calorie diets caused changes in antioxidant system in blood and tissues. Consequently, high-calorie basal diets especially addition of SFO improved only egg production and fertility rate. However feeding quails with corn syrup had significantly higher lipid peroxidation in kidney. Supplementation of milk thistle seed into CS group may protect kidney against free radical damage.
AtıfWoS8OpenAlex3İncele - MakaleAçık Erişim2015Scopus SJRQ3Determination of some quality properties of marinated sea bream (Sparus Aurata L., 1758) during cold storage
Kaya, Gulderen Kurt; Bastürk, Ozden
In this study, it was aimed to determine the effect of sea bream (Sparus aurata) marinated some quality properties during cold storage. The fillets of fish were immersed into brine including 3.5% acetic acid 11% salt in the ratio of 1: 1.5 (fish: marinate brine) for marination process. After the process of ripening, samples were grouped into two and packed in plastic containers; one being plain (in sunflower oil) and the other being sauced (sauced prepared with sunflower oil). During storage, sensory, crude protein, lipid, dry matter and crude ash, TBA, TVB-N, TMA-N and peroxide analyses were done periodically. According to results of 200 days of storage, TVB-N values of sea bream marinates packaged as plain and sauced were 15.86/14.89 mg/100g, TBA 7.06/7.99 mg MA/kg, TMA-N 2.97/3.12, mg/100g, the value of peroxide was 7.23/7.45 meq/kg respectively. According to chemical and sensory analyses results obtained in the study; it was concluded that sea bream marinates packaged as plain and sauced can be stored in +4 degrees C for 200 days.
AtıfWoS11OpenAlex16İncele - MakaleYalnız künye2015Scopus SJRQ1Effect of semen extender supplementation with cysteine on postthaw sperm quality, DNA damage, and fertilizing ability in the common carp (Cyprinus carpio)
Ögretmen, Fatih; Inanan, Burak Evren; Kutluyer, Filiz; Kayim, Murathan
Amino acids have an important biological role for prevention of cell damage during cryopreservation. The objective of this study is to determine the effects of cysteine on postthaw sperm motility, duration of sperm motility, DNA damage, and fertility in the common carp (Cyprinus carpio). Sperm collected from 10 individuals was cryopreserved in extenders containing different cysteine concentrations (2.5, 5, 10, and 20 mM). Semen samples diluted at the ratio of 1:9 by the extenders were subjected to cryopreservation. After dilution, the semen was aspirated into 0.25-mL straws; the straws were placed on the tray, frozen in nitrogen vapor, and plunged into liquid nitrogen. DNA damage was evaluated by comet assay after cryopreservation. Our results indicated that an increase in the concentration of cysteine caused a significant increase in the motility rate and duration of sperm in the common carp (C carpio; P < 0.05). Comparing all concentrations of cysteine, the best concentration of cysteine was 20 mM. Higher postthaw motility (76.00 +/- 1.00%) and fertilization (97.00 +/- 1.73%) rates were obtained with the extender at the concentration of 20 mM. Supplementation of the extender with cysteine was increased the fertilization and hatching rate and decreased DNA damage. Consequently, cysteine affected the motility, fertilization, and DNA damage positively, and extenders could be supplemented with cysteine. (C) 2015 Elsevier Inc. All rights reserved.
AtıfWoS48OpenAlex54İncele - MakaleAçık Erişim2015Scopus SJRQ1Classification of Kashar Cheeses Based on Their Chemical, Color and Instrumental Textural Characteristics Using Principal Component and Hierarchical Cluster Analysis
Eroglu, Ali; Dogan, Mahmut; Toker, Omer Said; Yilmaz, Mustafa Tahsin
Principal component analysis and hierarchical cluster analysis were applied to investigate physicochemical and instrumental textural properties of fresh kashar cheese. Four different principal components sufficiently explained the variability in the cheese samples. In addition, hierarchical cluster analysis was performed to group the kashar cheese samples regarding physicochemical and instrumental textural properties. Instrumental textural properties indicated greater variability than chemical composition of cheese samples. Principal component analysis revealed that color parameters were positively correlated with textural and chemical parameters. The results of this study revealed that other parameters rather than chemical composition would be effective on the instrumental textural properties. It was proved that principal component analysis was a very effective statistical tool to determine quality of cheese samples. According to the principal component analysis and hierarchical cluster analysis results, the attributes defining the kashar cheese samples were determined to be primarily the texture profile analysis parameters.
AtıfWoS29OpenAlex35İncele
