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Redoks svojstva slobodnih aminokiselina i indola kao model-jedinjenja u Fentonovom sistemu

Redox properties of free amino acids and indole as a model compound in the fenton system

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2018
Disertacija.pdf (3.066Mb)
IzvestajKomisije18454.pdf (187.5Kb)
Author
Milić Komić, Sonja
Mentor
Anđelković, Katarina
Committee members
Bogdanović Pristov, Jelena
Sladić, Dušan
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Abstract
U ovoj tezi ispitivane su antioksidativne aktivnosti (AA) slobodnih aminokiselina (glicin, alanin, prolin, valin, izoleucin, leucin, fenilalanin, triptofan, tirozin, serin, treonin, asparagin, glutamin, histidin, asparaginska kiselina, glutaminska kiselina, lizin, arginin, cistein i metionin, homocistein, hidroksiprolin, norleucin, 2-aminobutanska kiselina i 3,4-dihidroksifenilalanin) u Fentonovom sistemu. Redosled reaktivnosti aminokiselina u reakciji sa hidroksil-radikalom, antioksidativne aktivnosti (HO•) bio je sledeći: Trp > norleucin > Phe, Leu > Ile > His >3,4-dihidroksifenilalanin, Arg > Val > Lys, Tyr, Pro > hidroksiprolin > α-aminobutanska kiselina > Gln, Thr, Ser > Glu, Ala, Gly, Asn, Asp. Aminokiseline koje sadrže sumpor su u reakciji sa hidroksil-radikalom davale više različitih radikalskih vrsta koje su ispitivane EPR metodom sa spinskim hvatačima...
In this thesis antioxidative activities (AA) of free L-amino acids (glycine, alanine, proline, valine, isoleucine, leucine, phenylalanine, tryptophane, tyrosine, serine, threonine, asparagine, glutamine, histidine, aspartic acid, glutamic acid, lysine, arginine, cystein and methionine, homocysteine, hydroxyproline, norleucine, α-aminobutyric acid and 3,4-dihydroxyphenylalanine) against Fenton system-mediated hydroxyl radical (HO•) production in aqueous solution were studied. The rank order according to AA was: Trp > norleucine > Phe, Leu > Ile > His >3,4-dihydroxyphenylalanine, Arg > Val > Lys, Tyr, Pro > hydroxyproline> α-aminobutyric acid > Gln, Thr, Ser > Glu, Ala, Gly, Asn, Asp. Sulfur-containing FAA generated different secondary reactive products, which were discriminated by the means of electron paramagnetic resonance spin-trapping spectroscopy...
Faculty:
Универзитет у Београду, Хемијски факултет
Date:
24-09-2018
Projects:
  • Modulation of antioxidative metabolism in plants for improvement of plant abiotic stress tolerance and identification of new biomarkers for application in remediation and monitoring of degraded biotopes (RS-43010)
Keywords:
slobodne aminokiseline / free amino acids / triptofan / indol / redoks osobine / antioksidativnost / Fentonov sistem / hidroksil-radikal / gvožđe / otpadne vode / UV zračenje / tryptophan / indole / redox properties / antioxidant / Fenton system / hydroxyl radical / iron / waste waters / UV irradiation
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_nardus_10315
URI
https://nardus.mpn.gov.rs/handle/123456789/10315
http://eteze.bg.ac.rs/application/showtheses?thesesId=6270
https://fedorabg.bg.ac.rs/fedora/get/o:18902/bdef:Content/download
http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=50773775

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