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  • Küçük Resim
    Öğe
    Balon balığı, Lagocephalus sceleratus (Gmelin, 1789) (Osteichthyes:Tetraodontidae)'un total lipid ve yağ asidi bileşimi
    (Selçuk Üniversitesi Fen Bilimleri Enstitüsü, 2011-02-04) Ulusoy, Esra; Nurullahoğlu, Zahide Ulya
    Kızıldeniz' den Süveyş Kanalı üzerinden Akdeniz' e göç eden, Balon Balığı' nın denizlerimizde de bulunan ?Lagocephalus sceleratus? türünün, üreme dönemi olan yaz aylarında öldürücü zehir salgıladığı ve bu türün bu dönemde kesinlikle yenilmemesi gerektiği bilinmektedir. Bu çalışmada Balon Balığı, Lagocephalus sceleratus (Gmelin, 1789) (Osteichthyes: Tetraodontidae)' un total lipid ve yağ asidi bileşimi araştırılmıştır. Numunelerin total lipid miktarı belirlendikten sonra yağ asitlerinin gaz kromatografik analizler için metilleştirmeleri ve yağ asidi metil esterlerinin gaz kromatografik analizleri yapılmıştır. Yağ asidi bileşiminin en büyük yüzdeye sahip yağ asitlerinin palmitik asit, stearik asit, dokosaheksaenoik asit, oleik asit, linoleik asit ve eikosapentaenoik asit olduğu tespit edilmiştir.
  • Küçük Resim
    Öğe
    Comparative Study of Chemical and Biochemical Properties of Different Melon Cultivars: Standard, Hybrid, and Grafted Melons
    (Amer Chemical Soc, 2010) Kolaylı, Sevgi; Kara, Meryem; Tezcan, Filiz; Erim, F. Bedia; Şahin, Hüseyin; Ulusoy, Esra; Aliyazıcıoğlu, Rezzan
    Chemical and biochemical properties of standard, hybrid, and grafted melons cultivated under the same agricultural conditions in adjacent fields in the Cumra region of Turkey were investigated and compared based on pH, Brix, antioxidant activity, total phenolics, ascorbic acid, individual phenolics, sugar, and organic acid values. Seventeen different phenolic constituents were quantified by reverse phase high-performance liquid chromatography (RP-HPLC). The highest phenolic acid variability and content were detected in the standard melon. Sugar and organic acid compositions of melon cultivars were tested by capillary electrophoresis, and significant differences in types and contents of individual sugars and organic acids were determined among the cultivars. Standard Cinikiz Cumra melons had the highest ascorbic acid, total phenolics, and total sugar contents. The fructose/glucose ratio increased three times in grafted melon as compared with standard melon. While sugar alcohol mannitol existed in the standard and hybrid cultivars, this constituent disappeared in the grafted types. Citric acid found in the standard cultivar was not detected in the hybrid and grafted types. Consequently, it was concluded that the nutritional value of melons changed by the application of hybridization, grafting, or standard (open pollinated) production methods. The standard melon was found to have the highest score in terms of taste, because of its highest sweetness and sourness. It was also found preferable because of its high antioxidant activity, total phenolic and ascorbic acid contents.