Yazar "Tekinay, Adem" seçeneğine göre listele

Listeleniyor 1 - 4 / 4
  • [ X ]
    Öğe
    Comparison of fatty acid contents of wild and cultured rainbow trout Onchorhynchus mykiss in Turkey
    (Blackwell Publishing, 2007) Aslan, Serap Saglik; Guven, Kasim Cemal; Gezgin, Tuncay; Alpaslan, Mustafa; Tekinay, Adem
    The total lipid content and fatty acid composition were determined in the flesh and skin of wild and cultured rainbow trout in Turkey. The effect of diet content was also investigated on cultured trout. Gas chromatography-mass spectrometry (GC-MS) was used for fatty acid analyses. Total lipid content of skin was higher than flesh in both types and when compared appreciably higher in cultured fish. The predominant fatty acid was palmitic acid (C16:0) in saturated fatty acids and oleic acid (C18:1n-9) in monounsaturated fatty acids. The amount of eicosapentaenoic acid was double in wild and docosahexaenoic acid (DHA) 1.5 times higher in cultured fish flesh. The n-3/n-6 ratio was higher in cultured fish than wild fish. The levels of palmitic, oleic, linoleic (C18:2n-6) and palmitoleic (C16:1n-7) acids were high in skin. The level of EPA was the same in skin of wild fish but 5.5 times higher in cultured fish, whereas the proportion of DHA in skin was lower for wild and 3.5 times higher in cultured fish. Wild fish had a high level of linoleic, arachidonic (C20:4n-6) and linolenic (C18:3n-3) acids. The total amount of n-3 and n-6 polyunsaturated fatty acids was higher in flesh of wild fish than cultured fish, contrary to skin of cultured fish. The data obtained demonstrated that fatty acid composition of cultured fish did not depend on that of feed.
  • [ X ]
    Öğe
    Effects of pellet and extruded feed on fatty acid composition of European sea bass (Dicentrarchus labrax) using HRGC-MS
    (2009) Aslan, Serap Saglik; Çoban, Burak; Tekinay, Adem; Gezgin, Tuncay; Guven, Kasim Cemal
    Total lipid amount and fatty acid composition were determined and compared for cultivated European sea bass (Dicentrarchus labrax) from Turkey, which were fed with pellet and extruded commercial feed two or three times a day. Fatty acid analyses were carried out by gas chromatography-mass spectrometry. Among total fatty acids, palmitic (16:0), palmitoleic (16:1n-7), oleic (18:1n-9), linoleic (18:2n-6), eicosapentaenoic acid = EPA (20:5n-3) and docosahexaenoic acid = DHA (22:6«-3) were found to be the predominant fatty acids. The fish which received extruded feed (three times a day) had a slightly higher n-3/n-6 ratio of 1.41 compared to the other feeding types. It was found that the extruded feed given two times a day as fish diet resulted in the highest amounts of EPA, DHA, and total n-3 fatty acids.
  • [ X ]
    Öğe
    EFFECTS OF PELLET AND EXTRUDED FEED ON FATTY ACID COMPOSITION OF EUROPEAN SEA BASS (Dicentrarchus labrax) USING HRGC-MS
    (Parlar Scientific Publications (P S P), 2009) Aslan, Serap Saglik; Coban, Burak; Tekinay, Adem; Gezgin, Tuncay; Guven, Kasim Cemal
    Total lipid amount and fatty acid composition were determined and compared for cultivated European sea bass (Dicentrarchus labrax) from Turkey, which were fed with pellet and extruded commercial feed two or three times a day. Fatty acid analyses were carried out by gas chromatography-mass spectrometry. Among total fatty acids, palmitic (16:0), palmitoleic (16:1n-7), oleic (18:1n-9), linoleic (18:2n-6), eicosapentaenoic acid = EPA (20:5n-3) and docosahexaenoic acid = DHA (22:6n-3) were found to be the predominant fatty acids. The fish which received extruded feed (three times a day) had a slightly higher n-3/n-6 ratio of 1.41 compared to the other feeding types. It was found that the extruded feed given two times a day as fish diet resulted in the highest amounts of EPA, DHA, and total n-3 fatty acids.
  • [ X ]
    Öğe
    Heavy metals in livers, gills and muscle of Dicentrarchus labrax (Linnaeus, 1758) fish species grown in the Dardanelles
    (2009) Çoban, Burak; Balkıs, Nuray; Aksu, Abdullah; Güray, Derya; Tekinay, Adem
    Çanakkale boğazında özel bir balık çiftliğinde yetiştirilen Levrek balıklarında Dicentrarchus labrax (Linnaeus 1758) ciğer, solungaçlar ve kas dokularında ağır metal birikmesi üzerindeki bu çalışmada balık etinde bulunan metal konsantrasyonları (mg kg'1) Al 37±28; Cd 0.19±0.22; Cr 3.5±1.7; Cu 3.0±0.5; Fe 41±0.5; Hg 0.027±0.007; Pb 20±15; Zn <0.01'dır. Al, Cd, Cu, Cr, Hg ve Fe konsantrasyonları sıralaması ciğer>solungaç>kas dokuları şeklindedir. Pb ve Zn seviyeleri ise solungaç>ciğer>kas dokusu şeklindedir. Ölçülen Pb ve Cd seviyeleri insan sağlığı için limit değerlerin civarında olduğu tespit edilmiştir.