• Title of article

    Scavenging and antioxidant properties of compounds synthesized by carotenogenic yeasts stressed by heavy metals—EPR spin trapping study Original Research Article

  • Author/Authors

    Peter Rapta، نويسنده , , Martin Polovka، نويسنده , , Michal Zalibera، نويسنده , , Emilia Breierova، نويسنده , , Ingrid Zitnanova، نويسنده , , Ivana Marova، نويسنده , , Milan Certik، نويسنده ,

  • Issue Information
    روزنامه با شماره پیاپی سال 2005
  • Pages
    9
  • From page
    1
  • To page
    9
  • Abstract
    Free radical scavenging and antioxidant activities of metabolites produced by carotenogenic yeasts of Rhodotorula sp. and Sporobolomyces sp. grown under heavy metal presence were studied using various EPR experiments. The thermally initiated decomposition of K2S2O8 coupled with EPR spin trapping was shown to be the best choice to characterize antioxidant properties of yeastʹs samples. EPR spectroscopy revealed that yeast walls showed higher ability to scavenge free radicals than those from inside the cells. Since carotenogenic yeast differ to each other in resistance against the heavy metals due to their individual protective system, quenching properties and antioxidant activities of carotenogenic yeasts were modulated by Ni2+ or Zn2+ ions variously.
  • Keywords
    Spin trapping , Antioxidants , heavy metals , Yeast , Carotenoids , EPR spectroscopy
  • Journal title
    Biophysical Chemistry
  • Serial Year
    2005
  • Journal title
    Biophysical Chemistry
  • Record number

    1113676

    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=10&DC=1113676