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master's thesis
Određivanje koncentracije konzervansa u bezalkoholnim pićima metodom tekućinske kromatografije visoke učinkovitosti
Zagreb: University of Zagreb, Faculty of Science, 2020. urn:nbn:hr:217:611888
Ivezić, Sara
University of Zagreb
Faculty of Science
Department of Chemistry

Institutional repository: Repository of the Faculty of Science

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Ivezić, S. (2020). Određivanje koncentracije konzervansa u bezalkoholnim pićima metodom tekućinske kromatografije visoke učinkovitosti (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:611888

Ivezić, Sara. "Određivanje koncentracije konzervansa u bezalkoholnim pićima metodom tekućinske kromatografije visoke učinkovitosti." Master's thesis, University of Zagreb, Faculty of Science, 2020. https://urn.nsk.hr/urn:nbn:hr:217:611888

Ivezić, Sara. "Određivanje koncentracije konzervansa u bezalkoholnim pićima metodom tekućinske kromatografije visoke učinkovitosti." Master's thesis, University of Zagreb, Faculty of Science, 2020. https://urn.nsk.hr/urn:nbn:hr:217:611888

Ivezić, S. (2020). 'Određivanje koncentracije konzervansa u bezalkoholnim pićima metodom tekućinske kromatografije visoke učinkovitosti', Master's thesis, University of Zagreb, Faculty of Science, accessed 12 January 2025, https://urn.nsk.hr/urn:nbn:hr:217:611888

Ivezić S. Određivanje koncentracije konzervansa u bezalkoholnim pićima metodom tekućinske kromatografije visoke učinkovitosti [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2020 [cited 2025 January 12] Available at: https://urn.nsk.hr/urn:nbn:hr:217:611888

S. Ivezić, "Određivanje koncentracije konzervansa u bezalkoholnim pićima metodom tekućinske kromatografije visoke učinkovitosti", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:217:611888

Metadata
TitleOdređivanje koncentracije konzervansa u bezalkoholnim pićima metodom tekućinske kromatografije visoke učinkovitosti
Title (english)Determination of preservative concentration in soft drinks by high performance liquid chromatography
AuthorSara Ivezić
MentorJasna Bošnir (mentor)
Committee memberIva Juranović Cindrić (predsjednik povjerenstva)
Committee memberInes Primožič (član povjerenstva)
Committee memberŽeljka Soldin (član povjerenstva)
Committee memberSanda Rončević (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Chemistry)
Zagreb
Defense date and country2020-12-18, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Konzervansi su sastojci prirodnog ili sintetskog podrijetla čija je uloga sprječavanje, usporavanje ili zaustavljanje rasta mikroorganizama, sprječavanje propadanja hrane i produljenje njezinog roka trajanja. Određivanje koncentracije benzojeve i sorbinske kiseline u 25 bezalkoholnih pića provedeno je metodom tekućinske kromatografije visoke učinkovitosti s UV detektorom (HPLC/UV) koja je prethodno validirana te su izračunati validacijski parametri. Svih 25 analiziranih pića sadržava dva navedena konzervansa unutar dozvoljene koncentracijske granice koja iznosi 250 mg L–1. Granične vrijednosti udjela benzojeve kiseline određene su u pojedinim negaziranim i izotoničnim pićima na bazi voća, a sorbinske kiseline u nekoliko gaziranih i negaziranih pića te energetskom piću.
Abstract (english)
Preservatives are ingredients of natural or synthetic origin whose role is to prolong foods shelf life. This might be via preventing, slowing down or stopping the growth of microorganisms or any other deterioration process. Two commonly used preservatives are benzoic acid and sorbic acid. They were quantitatively determined in 25 commercially available soft drinks by high performance liquid chromatography with UV detector (HPLC/UV). The method used was validated and the corresponding validation parameters were calculated. All 25 analyzed beverages contain the two listed preservatives less than the maximum level given of 250 mg L–1. Limit values for benzoic acid were found in some non-carbonated and isotonic fruit-based beverages, and sorbic acids in several carbonated and non-carbonated beverages and energy drinks.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:611888
Study programmeTitle: Graduate university studies in chemistry; specializations in: Research programme
Course: Research programme
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2021-02-15 12:27:52