Sürdürülebilir Kalkınma Amaçları

• 1

Yazarlar

• Celik, Sait(1)
• Ispir, Unal(1)
• Keser, Serhat(1)
• Seker, Engin(1)
• Turk, Cebrahil(1)
• Turkoglu, Semra(1)
• Yonar, M. Enis(1)
• Yonar, Serpil Mise(1)

• MakaleYalnız künye2015Scopus SJRQ3/r/munzur/4203
  ANTIOXIDANT RESPONSES OF RAINBOW TROUT (Oncorhynchus mykiss) GILLS AFTER EXPOSURE TO HYDROGEN PEROXIDE

  Seker, Engin; Ispir, Unal; Yonar, Serpil Mise; Yonar, M. Enis; Turk, Cebrahil

  We evaluated antioxidant responses of Oncorhynchus mykiss, experimentally exposed to different concentrations of hidrogen peroxide (H2O2). Different concentrations of H2O2 (50 and 100 ppm) were administrated to the fish for 30, 60 and 90 min. Samples of the gill were collected at the end of the experiment, and analysed for their oxidant antioxidant status, including the malondialdehyde (MDA) level, the catalase (CAT) and glutathione peroxidase (GSH-Px) activity as well as the reduced glutathione (GSH) concentration. Results obtained showed that H2O2 significantly increased MDA level. Compared to controls, GSH level and GSH-Px and CAT activities were significantly reduced in the fish that were exposed to different concentrations of H2O2. The current data suggest that H2O2 has an oxidative-stress-inducing potential in fish. The various parameters studied in this investigation can also be used as biomarkers of exposure to H2O2.

  AtıfWoS18

  İncele
• MakaleAçık Erişim2013Scopus SJRQ2/r/munzur/4194
  Total phenolic contents and free-radical scavenging activities of grape (Vitis vinifera L.) and grape products

  Keser, Serhat; Celik, Sait; Turkoglu, Semra

  Grape is one of the world's largest fruit crops, with an approximate annual production of 58 million metric tons, and it is well known that the grape skins, seeds and stems, waste products generated during wine and grape juice processing, are rich sources of polyphenols. It contains flavonoids, phenolic acids and stilbenes. In this study, we tried to determine antioxidant properties and phenolic contents of grape and grape products (fresh fruit, seed, dried fruit, molasses, pestil, vinegar) of ethanol and water extracts. Antioxidant properties of extracts were investigated by DPPH center dot, ABTS(center dot+), superoxide, H2O2 scavenging, reducing power, metal chelating activity and determination of total phenolic contents. The seed extracts revealed highest ABTS(center dot+), DPPH center dot, H2O2 scavenging and reducing power activities. Furthermore, these extracts showed higher total phenolic contents than other grape product extracts.

  • 
  AtıfWoS41·OpenAlex45

  İncele