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Mineralni i polifenolni profil zelenog, crnog, biljnih i voćnih filter čajeva i njihov antioksidativni kapacitet

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2017
Disertacija.pdf (10.59Mb)
Krstic_Jovana_N.pdf (3.499Mb)
Author
Krstić, Jovana N.
Mentor
Pavlović, Aleksandra
Committee members
Mitić, Snežana
Stojanović, Gordana
Mitić, Milan
Kaličanin, Biljana
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Abstract
The aim of this doctoral dissertation was estimation of the antioxidant activity, polyphenol and mineral composition of black, green, herbal and fruit bagged teas. Heaving in mind the fact that different polyphenol compounds as antioxidants can react in vivo by various mechanisms, for determination of the total antioxidative activity was used several spectrophotometric tests (DPPH, ABTS, FRAP and RP) and electrochemical method - cyclic voltammetry. The antioxidant capacity of the analyzed samples was estimated using the antioxidant potency composite index (ACI). For identification and quantification of individual polyphenolic compounds, HPLC chromatography was used, and multi-element composition of bagged teas was determined by ICP-OES method. In order to differentiation analyzed bagged teas, methods of multivariate statistical analysis (PCA and CA) were used. In relation to the obtained results, analyzed bagged teas could contribute to the daily dietary requirements.
Faculty:
Универзитет у Нишу, Природно-математички факултет
Date:
22-06-2017
Projects:
  • Natural products of plants and lichens: isolation, identification, biological activity and application (RS-172047)
Keywords:
filter čajevi / bagged teas / metali / polifenoli / antioksidativni kapacitet / ciklična voltametrija / UV/Vis / HPLC / ICP-OES / multivarijantna statistička analiza / metals / polyphenols / antioxidative capacity / cyclic voltammetry / UV/Vis / HPLC / ICP-OES / multivariate statistics analysis
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_nardus_8528
URI
http://eteze.ni.ac.rs/application/showtheses?thesesId=5222
https://nardus.mpn.gov.rs/handle/123456789/8528
https://fedorani.ni.ac.rs/fedora/get/o:1390/bdef:Content/download
http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70052&RID=1025494505

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