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    Comparative study on biochemical composition of some edible marine molluscs at Canakkale coasts, Turkey
    (Natl Inst Science Communication-Niscair, 2014) Celik, MeryemYesim; Culha, Saniye Turk; Culha, Mehmet; Yildiz, Harun; Acarli, Sefa; Celik, Ihson; Celik, Painar
    Present study was carried out, at Dardanelles and the Marmara Sea coasts during March 2011 to February 2012. Ostrea edulis, Mytilus gallopro, Ruditapes decussa, Ruditapes pheleppirnarum and Rapona venosa were collected seasonally along with temperature and salinity. Biochemical composition of molluscs (protein, lipid, carbohydrate, moisture and ash) was examined from the samples. Seasonal values of protein, lipid, carbohydrate, ash and moisture were mean 64.71 +/- 1.31%, 1.86 +/- 0.10%, 24.09 +/- 1.33%, 9.35 +/- 0.26% and 67.51 +/- 1.47% in R.venosa; 55.88 +/- 2.04%, 5.60 +/- 0.19%, 23.43 +/- 1.59%, 15.10 +/- 0.67% and 83.28 +/- 0.86% inR. philipinarium; 56.27 +/- 1.98%, 5.82 +/- 0.34%, 23.39 +/- 1.62%, 14.53 +/- 0.66% and 83.58 +/- 0.59% in R. decussatus; 54.03 +/- 2.82%, 10.52 +/- 1.22%, 22.84 +/- 4.33%, 12.61 +/- 2.54% and 82.45 +/- 1.70% in M. galloprovincialis; 48.11 +/- 3.04%, 8.81 +/- 0.65%, 29.16 +/- 4.62%, 13.92 +/- 1.89% and 82.25 +/- 2.66% in O. edulis, respectively. Consequently, the sampled mollusc species has high protein (40.19 - 67.38 %) and low lipid (1.65 - 12.86 %). Overall, R. venosa appears to be best as diet with relatively high protein and low lipid among other examined molluscs.
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    Effects of anthropogenic activities on nutrient parameters in the North Eastern Mediterranean Sea (Bay of Sigacik/Aegean Sea)
    (Walter De Gruyter Gmbh, 2022) Culha, Saniye Turk; Karaduman, Fatma Rabia; Gundogdu, Ayse; Baris, Kamil Emre
    This study aims to examine the physicochemical parameters of seawater (temperature, pH, salinity, dissolved oxygen, suspended particulate matter, ammonium-nitrogen, nitrite-nitrogen, nitrate-nitrogen, and phosphate-phosphorus, burnable organic matter in the sediment), and possible effects of pollution in Sigacik Bay where different anthropogenic activities are carried out. Samples of surface seawater (0 m), bottom seawater (2 m), and sediment were collected monthly from four sampling sites between September 2013 and September 2014. Annual mean nutrient values were determined as 1.6 +/- 0.14 mu g.at.NH4+-N l(-1), 0.1 +/- 0.01 mu g.at.NO2--N l(-1), 0.8 +/- 0.08 mu g.at.NO3--N l(-1), 0.7 +/- 0.08 mu g.at.PO43--P l(-1), SPM 21.4 +/- 0.33 mg l(-1). The BOM content in the sediment was 5.6 +/- 0.39%. As a result of the study, it was determined that Sigacik Bay was polluted by anthropogenic point and non-point source pollution. According to the water quality criteria, the bay was found to be in the group of polluted seawater in terms of phosphate phosphorus.
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    Heavy Metal Accummulation in Muscles and Total Bodies of Mullus barbatus, Trachurus trachurus and Engraulis encrasicolus Captured from the Coast of Sinop, Black Sea
    (Zoological Soc Pakistan, 2016) Gundogdu, Ayse; Culha, Saniye Turk; Kocbas, Fatma; Culha, Mehmet
    The levels of heavy metals viz., Cd, Cu, Fe, Ni, Pb, Zn and Al were determined by ICP-AES in the muscles and total bodies of Mullus barbatus (Linnaeus 1758), Trachurus trachurus (Linnaeus 1758), Engraulis encrasicolus (Linnaeus 1758) captured from the coast of Sinop. The order of the levels of the heavy metals in the total fish samples was Fe > Zn > Al > Pb > Cu > Ni > Cd, whereas in the muscles, the order was Zn > Fe > Cu > Al > Pb > Ni > Cd. The experiment results are discussed by comparison with literature values.
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    Heavy metals in tissues of scorpionfish (Scorpaena porcus) caught from Black Sea (Turkey) and potential risks to human health
    (Springer Heidelberg, 2016) Culha, Saniye Turk; Yabanli, Murat; Baki, Birol; Yozukmaz, Aykut
    Scorpionfish (Scorpaena porcus) is a demersal fish species commercially important for its of which meat is tough and delicious. The aim of this study was to determine heavy metal (Al, Cu, Ni, As, Cd, Hg, Pb, U) concentrations in this fish species which is traditionally consumed in the Black Sea Area and, to compare the concentrations of various toxic elements in different organs of the fish specimens (muscle, liver, gill, and skin). Within this scope, the mineralization was performed using microwave digestion system. Thirty-two scorpionfish caught from Sinop Inland Port during 2010 were analyzed. The heavy metal concentrations were determined with the method of inductively coupled plasma mass spectroscopy (ICP-MS). Verification of the method was demonstrated by analysis of standard reference material (NRCC-TORT-2 lobster hepatopancreas). After evaluation of the results, it was determined that the highest heavy metal accumulation was generally found in the liver. The maximum aluminum level and the minimum uranium level were found in the analyzed tissues. In terms of heavy metals, Al, Cu, Cd, and Hg showed a statistically significant difference between tissues (p < 0.05). It was determined that heavy metal concentrations obtained from the muscle tissues did not exceed the national and international recommended limits; and also it was found that daily intake amounts did not exceed tolerable daily intake amounts. Furthermore, in THQ based risk evaluation, the value 1 which is crucial for children and adults was not surpassed. In terms of public health, it was found out that there was not any risk in consumption of scorpionfish in the study area.
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    Influence of Seasonal Environmental Changes on The Biochemical Composition of Sea Cucumber (Holothuria tubulosa Gmelin, 1791) in The Dardanelles Strait
    (Natl Univ Food Technologies, 2017) Culha, Saniye Turk; Celik, Meryem Yesim; Karaduman, Fatma R.; Dereli, Hakki; Culha, Mehmet; Ozalp, Hasan B.; Hamzacebi, Sevim
    Introduction. There is a serious worldwide protein deficiency problem, so it is the obligation to know about edible species and their biochemical composition. Sea cucumbers have great value because of its high protein content. The study comprises monthly data on biochemical content of H. tubulosa. Materials and methods. Monthly variations in biochemical composition of sea cucumbers and environmental interrelationship were investigated from April 2013 to March 2014, from three stations (Gelibolu, Umurbey and Dardanos) in Dardanelles Strait, Turkey. Results and discussion. Temperature pattern was similar at the stations while salinity and organic matter values at Dardanos was different than others stations. Protein was maximum (52.48%) in March at Gelibolu; in May (52.81%) at Umurbey and (56.93%) at Dardanos; lipid was maximum (1.70%) in February at Gelibolu; in March (1.77%) at Umurbey and in September (1.42%) at Dardanos; ash was maximum (43.51%) in November at Gelibolu; in September (44.22%) at Umurbey and in December (44.98%) at Dardanos. Carbohydrate reserves were reduced due to being used as energy for lipid synthesis in September and also carbohydrate and lipid reserves could be used as an energy source during periods of lower available nutrition for basic metabolic function. Protein, lipid, carbohydrate, ash and moisture values varied depending on food supply and reproduction period and might have been indirectly affected by environmental conditions. Conclusions. The study clearly showed that protein, lipid, carbohydrate and ash values varied depending on food supply and reproduction period and might have been indirectly affected by environmental conditions.
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    Site properties for snail farming: the role of environmental factors and soil profiles in Cornu aspersum mineral content
    (Springer, 2024) Celik, Meryem Yesim; Culha, Saniye Turk; Duman, Mehmet Bedrettin; Altan, Can Okan; Goren, Gulsen Uzun; Kostekli, Bayram
    The research aims to emphasize the importance of site selection in snail farming by examining how differences in environmental variables and regional characteristics influence the mineral content of Cornu aspersum snails. This is achieved through a comparative analysis of the mineral contents in their muscle tissue and shells, including calcium, potassium, phosphorus, magnesium, sodium, ash, and dry matter, across two locations in the Black Sea region: Fatsa (F) and Sinop (S). The study found that snails allocate resources based on available calcium to strengthen their shells for survival. Snails in Fatsa, with high sodium intake, may be unhealthy and suffer from dehydration, and the quality of their meat appears poor due to unfavorable calcium-to-phosphorus and sodium-to-potassium ratios. In Sinop, higher calcium and inorganic content in shells provided hardness, while high calcium in meat caused toughness. These findings underscore the significance of understanding and managing soil profiles for sustainable snail farming, thereby informing site selection and optimizing conditions for growth and nutritional quality.
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    The seasonal distribution of heavy metals in Mussel sample from Yalova in the Marmara Sea, 2008-2009
    (Springer, 2011) Culha, Saniye Turk; Kocbas, Fatma; Gundogdu, Ayse; Baki, Birol; Culha, Mehmet; Topcuoglu, Sayhan
    Concentration of the some heavy metals (Co, Cu, Fe, Ni, Pb and Zn) Mediterranean mussel Mytilus galloprovincialis from Yalova (Marmara Sea) were investigated seasonally. The mean concentrations of Co, Cu, Fe, Ni, Pb and Zn in the soft tissues were 4.08 +/- 0.67, 5.54 +/- 0.59, 156.72 +/- 20.18, 3.71 +/- 1.14, 2.92 +/- 0.51 and 106.23 +/- 5.66 mg kg (-aEuro parts per thousand 1) dry weights, respectively. There were no significant differences between the metal concentrations among the seasons (P > 0.05). The mean Pb and Zn concentrations were higher than the acceptable limit proposed by International Turkish standards.
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    Trace Elements Concentrations and Human Health Risk Evaluation for Four Common Fish Species in Sinop Coasts (Black Sea)
    (2020) Gündoğdu, Ayşe; Culha, Saniye Turk
    In the study, Trachurus trachurus, Engraulis encrasicolus, Merlangius merlangius euxinus, and Mullus barbatusfrom along the coast of Sinop were analysedfor the content of copper(Cu), zinc (Zn), lead (Pb), cadmium (Cd), iron (Fe), nickel (Ni)and aluminium (Al) in the muscle. Zn, Pb and Cd concentrations were determined to be lightly higher than the acceptable rates in fish samples. The provisional tolerable daily and weekly intake of trace metals in our work were all under than the limits set by the Food and Agriculture Organization/World Health Organization, while for Cd, only M. barbatuswas higher than FAO limits. E. encrasicolusand M. barbatushad the highest values for the collected total target danger section, but they did not posture a potential hazard within the diet of local residents. For carcinogenic and non carcinogenic risk assessment, the results were lower than the admissible rate of EPA. In the four fish species in the work, the Target cancer risk values of Ni were greater than 10-4, whereas the Target cancer risk values of Pb were smaller than 10-6. According to these results, it is thought that the Ni concentration in fish does pose a carcinogenic risk due to long-term and continuous consumption.