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Ispitivanje antioksidativnog potencijala hrane za bebe

Examination of antioxidative potential of infant formula

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2014
Disertacija2697.pdf (5.533Mb)
Author
Lugonja, Nikoleta M.
Mentor
Vrvić, Miroslav
Committee members
Spasić, Snežana
Mandć, Ljuba
Manojlović, Dragan M.
Gorjanovć, Stanislava
Metadata
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Abstract
Oksidativni stres se javlja još u toku neonatalnog perioda. U mlađem gestacionom dobu koje karakteriše slabiji antioksidativni kapacitet može doći do povećanog stvaranja slobodnih radikala i reaktivnih kiseoničnih vrsta. Dosadašnjim istraživanjima je utvrđeno da majčino mleko ima veoma veliki antioksidativni kapacitet u odnosu na infant formule, koje su zamena za majčino mleko. Antioksidanti majčinog mleka još uvek nisu kompletno definisani, ali najvažniji su superoksid-dismutaza, glutation-peroksidaza, katalaza, vitamini C, A i E, koenzim Q, karotenoidi, cistein, koji sinergistički štite novorođenče od reaktivnih kiseoničnih vrsta u ranom životnom doba. Cilj ove doktorske disertacije je proučavanje ukupnog antioksidativnog potencijala infant i prelaznih formula i mleka za malu decu do 3 godine starosti i njihovo poredjenje sa ukupnim antioksidativnim svojstvima zrelog majčinog mleka i standardnog konzumnog kravljeg mleka, kao referentnog. Na osnovu dosadašnjih rezultata i aktuelnih na...učnih saznanja u okviru ove oblasti istraživanja, u ovoj doktorskoj disertaciji primenjene su moderne laboratorijske tehnike i instrumentalne metode za određivanje ukupnog antioksidativnog potencijala hrane za bebe. Karakterizacija antioksidativnog potencijala hrane za bebe urađena je na osnovu: enzimskih aktivnosti uzoraka (određivanje enzimske aktivnosti superoksid-dismutaze-SOD i glutation-peroksidaze-GSH-Px), ispitivanja antioksidativnog potencijala hrane za bebe različitim elektrohemijskim metodama (potenciometrija, ciklična voltametrija, diferencijalna pulsna voltametrija, polarografija), elektron-paramagnetnom rezonancom (EPR) i spektrometrijskim metodama (UV/VIS)...

Oxidative stress occurs even during the neonatal period. At the younger gestational age, which is characterized by weaker antioxidant capacity, increased production of free radicals and reactive oxygen species is possible. Previous research has found that breast milk has very high antioxidant capacity compared to infant formula, which are a substitute for breast milk. Breast milk antioxidants are not fully defined yet, but the most important ones are superoxide dismutase, glutathione peroxidase, catalase, vitamins C, A and E, coenzyme Q, carotenoids, cysteine, which synergistically protect infants from reactive oxygen species at an early age. The objective of this dissertation is the study of total antioxidant potential of infant, follow-on and toddler formulas for children under 3 years of age and their comparison with the overall antioxidant properties of mature breast milk and standard cow's milk as a reference. Based on previous results and current scientific knowledge in this fiel...d of research, modern laboratory techniques and instrumental methods for the determination of total antioxidant potential of baby food were applied within this dissertation. Characterization of the antioxidant potential of baby food was performed on the basis of: enzyme activity (determining the enzymatic activity of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px)), testing the antioxidant potential using various electrochemical methods (potentiometry, cyclic voltammetry, differential pulse voltammetry, and polarography), electron paramagnetic resonance and spectrometric methods...

Faculty:
University of Belgrade, Faculty of Chemistry
Date:
13-06-2014
Projects:
  • Simultaneous Bioremediation and Soilification of Degraded Areas to Preserve Natural Resources of Biologically Active Substances, and Development and Production of Biomaterials and Dietetic Products (RS-43004)
Keywords:
antioksidativni potencijal / antioxidant potential / hrana za bebe / majčino mleko / kravlje mleko / elektron-paramagnetna rezonanca / potenciometrija / ciklična voltametrija / diferencijalna pulsna voltametrija / polarografija / infant formula / human breast milk / cow’s milk / electron paramagnetic resonance / potentiometry / cyclic voltammetry / differential pulse voltammetry / polarography
[ Google Scholar ]
URI
http://eteze.bg.ac.rs/application/showtheses?thesesId=2898
http://nardus.mpn.gov.rs/handle/123456789/5350
https://fedorabg.bg.ac.rs/fedora/get/o:11115/bdef:Content/download
http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=47651855

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