Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleYalnız künye2018Scopus SJRQ1Antioxidant biomarkers in Gammarus pulex to evaluate the efficiency of electrocoagulation process in landfill leachate treatment
Serdar, Osman; Yildirim, Nuran Cikcikoglu; Tatar, Sule; Yildirim, Numan; Ogedey, Aysenur
The discharge of landfill leachate into the environment without effective treatment poses a serious threat for the aquatic ecosystems. This present study was undertaken to evaluate whether electrocoagulation process is efficient for treatment landfill leachate (LL) or not by using antioxidant biomarkers in Gammarus pulex. Glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), and catalase (CAT) activities and malondialdehyde (MDA) and glutathione (GSH) levels in G. pulex exposed to untreated, treated, and diluted rates 1/10 and 1/20 in both LL during 24 and 96 h were tested. Physiochemical characteristics of leachate (chemical oxygen demand, electrical conductivity, pH, phosphate, turbidity, NH3, Cl−, and color) were determined pre and post treatment. All physiochemical characteristics of LL decreased after treatment process. GSH-Px and CAT activities and GSH and MDA levels were increased in untreated groups when compared to control (p < 0.05). After treatment by electrocoagulation, MDA and GSH levels and CAT activities were returned to control values. In conclusion, the abilities of LL to stimulate oxidative stress in G. pulex have been proven. The results revealed that antioxidant parameters are useful biomarkers for determining the treatment efficiency of the electrocoagulation process.
AtıfScopus19WoS17OpenAlex23
İncele - MakaleYalnız künye2018Scopus SJRQ2The using of Gammarus pulex as a biomonitor in ecological risk assessment of secondary effluent from municipal wastewater treatment plant in Tunceli, Turkey
Tatar, Sule; Cikcikoglu Yildirim, Nuran; Serdar, Osman; Yildirim, Numan; Ogedey, Aysenur
The objectives of this research are the assessment of secondary effluents (SEs) quality by evaluating chemical parameters and biomarkers. For this purpose, MDA and GSH levels were determined by spectrofotometer. SOD, CAT, and GPX activities were determined by using ELISA kit in the groups of control and the groups exposed to SE. The level of MDA and the activities of SOD in Gammarus pulex vary depending on the exposure time. GSH levels and GSH-PX activities increased in G. pulex exposed to the effluent compared to the control during 24 h and 96 h. CAT activities were in SE group were found lower than the control in G. pulex during 24 h and 96 h. Current experimental results show that SOD, CAT, GPX activities, and GSH and MDA levels in G. pulex are sensitive and appropriate responses for assess the effects of anthropogenic contaminants on the aquatic ecosystems, particularly effluent complex mixtures.
AtıfScopus19WoS19OpenAlex22İncele - MakaleYalnız künye2018Scopus SJRQ1Biochemical responses of Gammarus pulex to malachite green solutions decolorized by Coriolus versicolor as a biosorbent under batch adsorption conditions optimized with response surface methodology
Yildirim, Nuran Cikcikoglu; Tanyol, Mehtap; Yildirim, Numan; Serdar, Osman; Tatar, Sule
The current study was aimed to investigate the detoxifying and antioxidant enzyme response of Gammarus pulex exposed to malachite green (MG) after decolorization by Coriolus versicolor. Response surface methodology (RSM) was utilized to optimize the decolorization conditions of MG synthetic solutions by C. versicolor. Glutathione (GSH), malondialdehyde (MDA) levels and glutathione peroxidase (GPX), catalase (CAT), superoxide dismutase (SOD), glutathione S-transferase (GST), cytochrome P450 1A1 (CYP1A1) activities in G. pulex exposed to undecolorized (A1) and decolorized (A2) MG synthetic solution during 24 and 96 h were tested by using ELISA method. SOD and GPX enzyme activity was increased after decolorization (p > 0.05). CAT enzyme activity was increased in A2 group during 24 h (p > 0.05) but decreased during 96 h (p < 0.05). GSH levels were increased in A2 group during 24 and 96 h (p < 0.05). GST, CYP1A1 enzyme activity and MDA levels were decreased after decolorization during 96 h (p < 0.05). In this study, GSH levels, CAT, GST and CYP1A1 activities in G. pulex approved the capability of C. versicolor in MG decolorization, optimized with RSM.
AtıfScopus28WoS24OpenAlex31İncele - MakaleYalnız künye2017Scopus SJRQ3C-REACTIVE PROTEIN AND ADRENOMEDULLIN LEVELS IN CAPOETA UMBLA (HECKEL, 1843) AS NOVEL BIOINDICATORS FOR BIOMONITORING THE MICROBIAL CONTAMINATION IN INLAND WATERS OF TUNCELI, TURKEY
Yildirim, Nuran Cikcikoglu; Danabas, Durali; Yildirim, Numan; Tanyol, Mehtap; Danabas, Seval
The present study focused on changes in the C-reactive protein (CRP) and adrenomedullin (ADM) levels in the liver and gill tissues of Capoeta umbla as biomarkers of environmental pollution and ecosystem health in inland waters of Tunceli (Turkey). The CRP levels in liver and gills were not significantly changed in March and September at every site (p>0.05) except for site 3 in gill tissues (p<0.05). The results of statistical analysis indicate that significant differences in CRP levels were found in liver and gills among sites (p<0.05), but no changes in the gills at March (p>0.05). In March, ADM levels in gills and liver were statistically changed among sites (p<0.05), while no statistical changes were determined in September (p>0.05). The results of this study indicated that CRP levels in the tissues of the C. umbla could be utilized as a significant bioindicator for disease pathogenesis in fish infections.
- MakaleYalnız künye2017Scopus SJRQ3Biochemical impacts of the textile dyes Remazol Brillant Blue R and Congo Red on the crayfish Astacus leptodactylus (Decapoda, Astacidae)
Aksu, Onder; Yildirim, Nuran Cikcikoglu; Danabas, Durali; Yildirim, Numan
In this study, we determined the effects of the textile dyes Remazol Brillant Blue R (RBBR) and Congo Red (CR) on the enzymatic activities of Glutathione S-Transferase (GST), cytochrome P450 (CYP1A1) and Lactate dehydrogenase (LDH), in hepatopancreas of Astacus leptodactylus. The crayfishes were exposed to 0.5, 1.0, and 2.0 mg/l of RBBR or CR, for 24 and 48 h. The recorded GST activity clearly increased after 24 or 48 h exposure to CR, compared to a control group (p<0.05), but the changes of GST activity depending on time and dose were not statistically significant in the RRBR group (p<0.05). The activity of CYP1A1 generally decreased, but LDH activity increased in the groups exposed to different doses of CR and RBBR, when compared to their control groups. Detoxification enzymes (as GST, and CYP1A1) and metabolic enzymes (as LDH) can be proven to make useful markers for further evaluating the physiological effects of CR and RBBR on crayfish.
AtıfScopus21WoS19OpenAlex23İncele - MakaleYalnız künye2017Scopus SJRQ1Investigation of optimum conditions for efficient COD reduction in synthetic sulfamethazine solutions by Pleurotus eryngii var. ferulae using response surface methodology
Yonten, Vahap; Alp, Hevidar; Yildirim, Numan; Yildirim, Nuran Cikcikoglu; Ogedey, Aysenur
This study aims to explore the optimum conditions for P. eryngii var. ferulae in adsorption of sulfamethazine (SM) from synthetic solutions via reduction of chemical oxygen demand (COD). The optimum conditions were optimized using the response surface methodology (RSM) developed by the application of the quadratic model associated with the central composite design. For this aim, RSM was employed to determine the effects of some parameters on this adsorption process by fungal biomass as an effective and available adsorbent. The investigated parameters were initial concentration of sulfamethazine (70–235 mg L−1), solution pH (3–7), adsorbent dosage (0.3–1.5 g), and contact time (5–25 min). The significant factors on each experimental design response were identified from the analysis of variance. The results of RSM analyzes revealed that optimum conditions of initial SM concentration, pH, adsorbent dosage, and contact time for maximum COD removal (82%) were achieved as 400 mg L−1, 11, 1.46 g, and 15.4 min, respectively. The results showed that dead biomass of P. eryngii var. ferulae were an appropriate adsorbent for the removal of COD in the SM medium from synthetic solutions.
AtıfScopus13WoS12OpenAlex15İncele - 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 - MakaleAçık Erişim2016Scopus SJRQ2Optimization of Remazol Brilliant Blue R dye removal by novel biosorbent P. eryngii immobilized on Amberlite XAD-4 using response surface methodology
Yonten, Vahap; Tanyol, Mehtap; Yildirim, Numan; Yildirim, Nuran Cikcikoglu; Ince, Muharrem
This study investigates preparation of biosorbent Pleurotus eryngii immobilized on Amberlite XAD-4 and the optimal conditions for removal of Remazol Brilliant Blue R (RBBR) reactive dye from synthetic aqueous solutions. The process was optimized using the response surface methodology (RSM) developed by the application of the quadratic model associated with the central composite design. For this purpose, RSM was employed to determine the effects of operational parameters on this material as effective and available adsorbent. The investigated variables were dye initial concentration (10-60 mg L-1), solution pH (2-9), adsorbent dosage (0.1-0.5 g), and temperature (20-45 degrees C). The significant factors on each experimental design response were identified from the analysis of variance (ANOVA). The RSM indicated that optimum conditions of initial dye concentration, pH, adsorbent dosage, and temperature for maximum RBBR removal (98%) were achieved as 36.3 mg L-1, 2.0, 0.304 g, and 38.7 degrees C, respectively. The results showed that this biosorbent was an appropriate adsorbent for the removal of RBBR from aqueous solutions.
AtıfWoS17OpenAlex20İncele - MakaleYalnız künye2016Scopus SJRQ4SCREENING OF TOTAL ANTIOXIDANT STATUS OF RICOTTA L. AND SOME GRAMMOSCIADIUM DC SPECIES FROM TURKEY
Yildirim, Nuran Cikcikoglu; Paksoy, Mehmet Yavuz; Yildirim, Numan; Yuce, Ebru
This study was aimed at screening the total antioxidant status (TAS) of genus Ricotta L. and some Grammosciadium L. from Turkey in order to find new potential sources of natural antioxidants. The TAS level of a total of 12 plant extracts from non-edible plant materials was examined. According to the results, hexanic extract of R. sinuata plant exhibited the lowest antioxidant status (2.41 mmol Trolox equivalent/l). The highest TAS level was determined in ethanolic extract of the G. daucoides (4.36 mmol Trolox equivalent/l). As a result, due to its antioxidative properties, ethanolic extract of G. daucoides can be utilized as a natural source of antioxidants.
- MakaleAçık Erişim2016Scopus SJRQ2Adsorption of bisphenol A from aqueous solutions by Pleurotus eryngii immobilized on Amberlite XAD-4 using as a new adsorbent
Yonten, Vahap; Ince, Muharrem; Tanyol, Mehtap; Yildirim, Numan
The adsorption of bisphenol A (BPA) in a fixed-bed column was evaluated in this work. Fungus Pleurotus eryngii isolated from Tunceli (Turkey) immobilized on XAD-4 resin was used as an adsorbent for decontamination of BPA from aqueous solutions. The extent of BPA removal capacity was evaluated as a function of parameters such as pH, volume of the sample, and column bed height. Adsorption isotherms of BPA on immobilized P. eryngii were determined and correlated with common isotherm equations such as Langmuir and Freundlich models. The mechanism of adsorption of BPA was analyzed preadsorption (XAD-4+fungus) and postadsorption (XAD-4+fungus+BPA) using fourier transform infrared spectroscopy. The results show that adsorption ability of BPA by immobilized P. eryngii is possible and this system yields the best degree of BPA removal (90%) at pH 11 for an initial load of 120mgL(-1). Therefore, this material can be used as a very effective adsorbent for BPA decontamination in aqueous solutions.
AtıfWoS17OpenAlex21İncele - MakaleÖn baskısı açık2016Scopus SJRQ2Cytokine Responses in Gills of Capoeta umbla as Biomarkers of Environmental Pollution
Danabas, Durali; Yildirim, Nuran Cikcikoglu; Yildirim, Numan; Onal, Ayten Oztufekci; Uslu, Gulsad; Unlu, Erhan; Danabas, Seval; Ergin, Cemil; Tayhan, Nilgun
Immunological biomarkers reflect the effects of exposure to environmental contaminants. In this study, the suitability and sensitivity of cytokine responses, interleukin 1 beta (IL-1 beta), interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-alpha) in gill tissues of Capoeta umbla (Heckel, 1843), collected from different regions, as early warning indices of environmental pollution and ecosystem health was evaluated. Fish and water samples were taken from ten stations in March and September 2011 and 2012. Tumor necrosis factor-alpha, IL-1 beta and IL-6 levels were determined in samples of the gill tissues by using an ELISA kit. Significant variations of TNF-alpha, IL-1 beta and IL-6 levels observed between stations and seasons. The results of this study show that seasonal variations of cytokine responses in gills of Capoeta umbla are sensitive to the contaminants present in Uzuncayir Dam Lake (Tunceli, Turkey) water and are valuable biomarkers for environmental pollution and ecosystem health.
AtıfWoS5OpenAlex4İncele - MakaleYalnız künye2015Scopus SJRQ1Biochemical response of crayfish Astacus leptodactylus exposed to textile wastewater treated by indigenous white rot fungus Coriolus versicolor
Aksu, Onder; Yildirim, Nuran Cikcikoglu; Yildirim, Numan; Danabas, Durali; Danabas, Seval
The discharge of textile effluents into the environment without appropriate treatment poses a serious threat for the aquatic organisms. The present study was undertaken to investigate biochemical response of crayfish Astacus leptodactylus exposed to textile wastewater (TW) treated by indigenous white rot fungus Coriolus versicolor. Glutathione S-transferase (GST), cytochrome P450 1A1 (CYP1A1), and acetylcholinesterase (AchE) levels in hepatopancreas and abdomen tissues of crayfish exposed to untreated, treated, and diluted rates (1/10) in both TW during 24 and 96 h were tested. Physiochemical parameters (electrical conductivity (EC), chemical oxygen demand (COD), pH, and total dissolved solid (TDS)) of TW were determined before and after treatment. Physiochemical parameters of TW decreased after treatment. The GST activity and AchE were generally increased, but CYP1A1 activity was decreased in hepatopancreas tissue of crayfish exposed to different kinds of untreated TW. After treatment by indigenous white rot fungus (C. versicolor), GST and CYP1A1 activities were returned to control values, while AchE activities were increasing further. In this study, only GST and CYP1A1 activities of A. leptodactylus confirmed the efficiency of TW treatment with C. versicolor.
AtıfWoS23OpenAlex27İncele - MakaleAçık Erişim2015Scopus SJRQ3Changes in antioxidant defense system in gills of Capoeta umbla caught from Uzuncayir Dam Lake, Turkey
Danabas, Durali; Yildirim, Nuran Cikcikoglu; Yildirim, Numan; Onal, Ayten Oztufekci; Uslu, Gulsad; Unlu, Erhan; Danabas, Seval; Ergin, Cemil; Tayhan, Nilgun
The aim of this work was to determine the seasonal changes in the activities of selected biomarkers in Capoeta umbla (Heckel, 1843) caught from Uzuncayir Dam Lake (Tunceli, Turkey) and to evaluate the effects of environmental factors on these activities. Fish were sampled on seasonal basis, and superoxide dismutase, catalase, glutathione peroxidase activities and levels of glutathione and malondialdehyde in gills were determined. Significant variations of oxidative stress biomarkers were observed between seasons and sites. The results of this study show that seasonal variations of oxidative stress responses and lipid peroxidation in gills of C. umbla are sensitive to the contaminants present in water of Uzuncayir Dam Lake and selected parameters are in valuable biomarkers for monitoring of water systems, since they give an early warning signal of effects of xenobiotics on aquatic organisms at molecular levels which help to prevent their effects at organismal level. (C) 2015 Elsevier Ltd. All rights reserved.
AtıfWoS14OpenAlex10İncele - MakaleYalnız künye2014Scopus SJRQ2Use of acetylcholinesterase, glutathione S-transferase and cytochrome P450 1A1 in Capoeta umbla as biomarkers for monitoring of pollution in Uzuncayir Dam Lake (Tunceli, Turkey)
Yildirim, Nuran Cikcikogiu; Yildirim, Numan; Danabas, Durali; Danabas, Seual
Uzuncayir Dam Lake is one of the most important water bodies in Tunceli. It is polluted by domestic wastewaters together with natural contamination and pesticides, which have had cumulatively negative effects. This study analyzes the effects of pollution by using the fish species, Capoeta umbla as a sentinel species, with a biomarker approach. The approach comprehends a general biomarker of individual fish health, the condition factor and specific biomarkers of contaminant exposure such as glutathione S-transferase (GST) and cytochrome P450 1A1 (CYP1A1) and acetylcholinesterase (AChE) activity. The general water physico-chemical parameters were measured at each sampling sites during each fish-sampling period. Strong seasonal and locational variations were observed among selected markers. In conclusion, the multibiomarker approach used in the present study clearly revealed differences in the fish health among reference and potentially contaminated sites. The study shows that changes of biomarkers such as acetylcholinesterase, glutathione S-transferase and cytochrome P450 1A1 might be useful for the assessment of environmental contamination in the Uzuncayir Dam Lake (Tunceli, Turkey). (C) 2014 Elsevier By. All rights reserved.
AtıfWoS14OpenAlex16İncele - MakaleYayıncıda açık erişim2014Scopus SJRQ3Temporal Changes in Concentrations of Some Trace Elements in Muscle Tissue of Crayfish, Astacus leptodactylus (Eschscholtz, 1823), from Keban Dam Lake
Aksu, Onder; Adiguzel, Ragip; Demir, Veysel; Yildirim, Numan; Danabas, Durali; Seker, Sebahat; Can, Safak Seyhaneyildiz; Ates, Mustafa
Crayfish (Astacus leptodactylus Eschscholtz, 1823) is the native crayfish species in Turkey. It was exported regularly to Western Europe. In this study, bioaccumulation and temporal trends of some trace elements (arsenic: As, cadmium: Cd, copper: Cu, mercury: Hg, lead: Pb, and zinc: Zn) in edible abdomenmuscle of crayfish from Keban Dam Lake (Elazig, Turkey) were investigated for the 2006-2012 period. Sequence of metal concentration levels was Zn > Cu > Hg > Pb > Cd > As in muscle tissues. The highest concentration of Zn (21.69mg kg(-1)) was detected in 2006, while the lowest (4.35mg kg(-1)) in 2009. In general, it was found that the concentrations of trace elements investigated were lower than the maximum permissible limits of the food regulations of the Ministry of Food, Agriculture, and Livestock (MFAL), the Turkish Food Codex and Commission Regulation (EC). If the crayfish selected for the study are recognized as bioindicators of environmental pollution, then it is possible to conclude that the changes in studied trace elements concentrations in the Keban Dam Lake are being steady.
AtıfWoS5OpenAlex8İncele - MakaleYalnız künye2013Scopus SJRQ4Evaluation of Bacteriological Quality of Drinking Water in the City Center of Tunceli, Turkey
Demir, Veysel; Yildirim, Numan; Yildirim, Nuran Cikcikoglu; Ergin, Sezai; Cumurcu, Aysenur
The aim of this study was to evaluate the bacteriological contamination of drinking water in Tunceli, Turkey. For this purpose, the presence of total coliforms, Escherichia coli, and Enterococci was investigated at ten water sampling stations in the Tunceli province. The microbiological dataset of the ten stations were obtained from the Health Directorate of Tunceli for this study. Detection of E. coli and total coliform was performed using the membrane filtration method, Turkish Standards (TS) 9308- 1.(1) Enterococci were enumerated according to the TS 7899-2(2) method. Varying levels of bacterial contamination were recorded in samples from these ten stations. It was observed that bacterial contamination was highest in the village of Burmagecit. Results indicate that microbiological contaminations were found to be above the allowable amount for drinking waters given by the World Health Organization (WHO). Because of this, appropriate disinfection methods and regular quality control mechanisms must be implemented by the Health Directorate of Tunceli.
AtıfWoS1İncele - MakaleYalnız künye2013Scopus SJRQ2TOTAL ANTIOXIDANT STATUS AND ANTIFUNGAL ACTIVITIES OF ENDEMIC GEOPHYTIC PLANTS COLLECTED FROM MUNZUR VALLEY IN TUNCELI, TURKEY
Yildirim, Nuran Cikcikoglu; Paksoy, Mehmet Yavuz; Yuce, Ebru; Yildirim, Numan
Total antioxidant status and antifungal activities of three endemic plants from the Munzur Valley in Tunceli, Turkey; Bellevalia gracilis Feinbrun, Muscari aucheri (Boiss.) Baker ve Tulipa armena Boiss. var. lycica (Baker) Marais were evaluated for the first time. Aqueous, hexanic, methanolic and ethanolic extracts were obtained from leaves and bulbs of B. gracilis, M. aucheri ve T. armena var. lycica. Total antioxidant status was determined by using TAS assay kit (Rel assay diagnostics). Antifungal assays were performed according to amended agar method against white rot fungus Coriolus versicolor. Among the plants tested, the leaves of B. gracilis exhibited highest total antioxidant status among all samples evaluated in this study. According to the results, M. aucheri plant exhibited the lowest antioxidant status. The results of this study showed that the aqueous leaf extract of T. armena var. lycica at a concentration 2.5% (w/v) suppressed significantly the radial growth of C. versicolor by 68.00%. It can be concluded that the plant species assayed possess antifungal and antioxidant properties.
AtıfWoS4İncele - MakaleAçık Erişim2013Scopus SJRQ4Bioaccumulation of Copper and Zinc in Freshwater Crayfish (Astacus leptodactylus) Fed with Zebra Mussels (Dreissena polymorpha) Collected from Keban Dam Lake, Turkey
Aksu, Onder; Gulec, Azime Kucukgul; Demir, Veysel; Danabas, Durali; Yildirim, Numan; Ozcelik, Mehtap; Can, Erkan; Kocabas, Mehmet
This study is aimed to determine the bioaccumulation of copper and zinc in hemolymph of freshwater crayfish (Astacus leptodactylus) fed with zebra mussel (Dreissena polymorpha) collected from Keban Dam Lake. This is the first study on bioaccumulation of Cu and Zn in hemolymph of males and females of A. leptodactylus. The average concentrations of Cu and Zn in the hemolymph samples were found out as 0.54 and 35.07 ppm respectively for male and 0.42 and 15.59 ppm respectively for female control freshwater crayfish. The levels of Zn in the hemolymph of both male and female ones among control and diet groups were statistically significant (P < 0.05). The Cu levels among control and diet groups in female ones were statistically significant (P < 0.05) but not in the male ones (P > 0.05). The results of current study revealed that feed treatment with boiling was not effective at the levels of metal bioaccumulation in hemolymph. It was observed that this metal bioaccumulation is more related with sex differences.
AtıfWoS2OpenAlex2İncele - MakaleYalnız künye2012Scopus SJRQ2Some Heavy Metals Accumulation in Tissues in Capoeta umbla (Heckel, 1843) from Uzuncayir Dam Lake (Tunceli, Turkey)
Ural, Mesut; Yildirim, Numan; Danabas, Durali; Kaplan, Olcay; Yildirim, Nuran Cikcikoglu; Ozcelik, Mehtap; Kurekci, Eylem Funda
Concentrations of metals were determined in the gills, liver, kidney, heart and muscle in Capoeta umbla caught from six stations from the Munzur River system. Metal concentrations in the tissues tended to vary significantly among stations (p < 0.05). Liver (Cu, 10.10 +/- A 0.23-23.03 +/- A 9.37 ppm; Zn, 14.67 +/- A 3.01-21.82 +/- A 2.39 ppm; Cd, 18.04 +/- A 4.56-52.69 +/- A 10.65 ppb and Fe, 28.87 +/- A 6.78-115.11 +/- A 34.87 ppm) and kidney (Cu, 1.80 +/- A 0.25-3.70 +/- A 0.62 ppm; Zn, 20.81 +/- A 0.37-29.36 +/- A 0.70 ppm; Cd, 132.06 +/- A 5.29-639.51 +/- A 20.14 ppb and Fe, 24.40 +/- A 1.98-59.39 +/- A 1.97 ppm) tissues showed higher metal concentrations than other tissues. It seems that metal contamination in the river is too high for the health of fish and the people who eat them. The geographical locations of catch, season, nature of diet, and the size of fish used for analyses might lead to different metal concentration in the same fish species.
AtıfWoS23OpenAlex27İncele - MakaleYalnız künye2012Scopus SJRQ2ANTIOXIDANT PROPERTIES OF WILD EDIBLE MUSHROOM PLEUROTUS ERYNGII COLLECTED FROM TUNCELI PROVINCE OF TURKEY
Yildirim, Nuran Cikcikoglu; Turkoglu, Semra; Yildirim, Numan; Ince, Olcay Kaplan
Antioxidants are our first line of defense against free radical damage, and are critical for maintaining health. The need for antioxidants becomes even more critical with increased exposure to free radicals. In the past few years there has been an increasing interest in determining relevant dietary sources of antioxidant phenolics. Mushrooms have been not only used as food materials with their unique flavor and texture, but also recognized as an important source of biologically active compound of medicinal value. In our study, to determine the antioxidant properties of the methanolic extracts of Pleurotus eryngii strains collected from different region of Tunceli, radical scavenging activity, total phenolic contents, reducing power, metal chelating activity and total antioxidant status (TAS) were analyzed. The analysis of phenolic compounds was performed by HPLC. In particular, the methanolic extract of P. eryngii collected from city center revealed the highest DPPH radical scavenging activity and reducing power, while the highest total phenolics and total antioxidant status was determined in P. eryngii collected from Pulumur. P. eryngii collected from Ovacik showed the highest chelating effects. Concentration of phenolic compounds found in three wild edible mushrooms. Kaempferol and catechin were not determined in musrooms species. The highest rutin levels were determined in ovacik. Resveratrol was determined only in Pulumur. The studied wild mushrooms might be beneficial to protect human body against oxidative damage.
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