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master's thesis
Određivanje udjela mineralnih tvari u hrani za dojenčad
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2013. urn:nbn:hr:159:739398
Ajredini, Saša
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Food Quality Control
Laboratory for Food Quality Control

Institutional repository: Repository of the Faculty of Food Technology and Biotechnology

Cite this document

Ajredini, S. (2013). Određivanje udjela mineralnih tvari u hrani za dojenčad (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:739398

Ajredini, Saša. "Određivanje udjela mineralnih tvari u hrani za dojenčad." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2013. https://urn.nsk.hr/urn:nbn:hr:159:739398

Ajredini, Saša. "Određivanje udjela mineralnih tvari u hrani za dojenčad." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2013. https://urn.nsk.hr/urn:nbn:hr:159:739398

Ajredini, S. (2013). 'Određivanje udjela mineralnih tvari u hrani za dojenčad', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 23 December 2024, https://urn.nsk.hr/urn:nbn:hr:159:739398

Ajredini S. Određivanje udjela mineralnih tvari u hrani za dojenčad [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2013 [cited 2024 December 23] Available at: https://urn.nsk.hr/urn:nbn:hr:159:739398

S. Ajredini, "Određivanje udjela mineralnih tvari u hrani za dojenčad", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2013. Available at: https://urn.nsk.hr/urn:nbn:hr:159:739398

Metadata
TitleOdređivanje udjela mineralnih tvari u hrani za dojenčad
Title (english)Determination of mineral content in infant formulas
AuthorSaša Ajredini
MentorMirjana Hruškar (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Food Quality Control)
(Laboratory for Food Quality Control)
Zagreb
Defense date and country2013-02-08, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract
Razvijena je i validirana jednostavna i brza F-AAS metoda za određivanje bakra, željeza, cinka i natrija te F-AES metoda za određivanje kalija u hrani za dojenčad. Razvijenom je metodom određen udjel navedenih mineralnih tvari, dok je udjel kalcija određen gravimetrijsko-volumetrijskom i fosfora kolorimetrijskom metodom u 14 uzoraka hrane za dojenčad. Udjel bakra iznosio je od 232 do 403 μg/100 g praha, željeza od 4,4 do 7,2 mg/100 g praha, cinka od 2,1 do 5,3 mg/100 g praha, natrija od 91 do 211 mg/100 g praha, kalija od 98 do 187 mg/100 g praha, kalcija od 376 do 543 mg/100 g praha i fosfora od 198 do 370 mg/100 g praha. Uočeno odstupanje izmjerenog od deklariranog udjela mineralnih tvari iznosilo je od - 76,95 do 23,45 %. Udjel kalija se u svim ispitivanim uzorcima nalazio značajno ispod, dok se udjel cinka u jednom uzorku nalazio neznatno ispod minimalnog udjela dopuštenog Pravilnikom.
Abstract (english)
A simple and rapid F-AAS method for copper, iron, zinc and sodium analysis and F-AES method for potassium analysis in infant formula was developed and validated. Additionaly, infant formula calcium and phosphorus content was determined by gravimetric-volumetric and colorimetric methods, respectively. Mineral content in the 14 analysed infant formula samples, expressed as content per 100 g of powder, ranged from 232 to 403 μg for copper, from 4.4 to 7.2 mg for iron, from 2.1 to 5.3 mg for zinc, from 91 to 211 mg for sodium, from 98 to 187 mg for potassium, from 376 to 543 mg for calcium and from 198 to 370 mg for phosphorus. The mineral content difference between obtained results and declared values on product labels ranged from - 76.95 to 23.45 %. Potassium content in all samples was significantly below while zinc content of one sample was slightly below minimal amounts required by national regulations.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:739398
Study programmeTitle: Food Safety Management
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka upravljanja sigurnošću hrane (magistar/magistra inženjer/inženjerka upravljanja sigurnošću hrane)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2017-05-04 12:19:47