diplomsko delo
Mina Nikolić (Author), Drago Kočar (Mentor)

Abstract

Vitamini so ključnega pomena za človeško zdravje, saj nezadosten vnos le teh lahko povzroči razne bolezni. Kadar ni možno zagotoviti zadostnega vnosa vitaminov skozi prehrano, uporabljajo ljudje prehranska dopolnila. Uporaba prehranskih dopolnil mora biti strogo kontrolirana, saj je tudi prekomeren vnos vitaminov lahko škodljiv. Iz tega razloga je zelo pomembno ujemanje vsebnosti vitaminov napisane na deklaraciji prehranskega dopolnila z dejansko vsebnostjo. Za kontrolo tega ujemanja potrebujemo natančne, zanesljive in hitre analizne metode. Ene najbolj pogosto uporabljenih so tekočinska kromatografija, kapilarna elektroforeza, voltametrija, spektrofluorimetrija in superkritična tekočinska kromatografija. To diplomsko delo vsebuje kratke teoretične osnove vsake izmed omenjenih metod, opis optimalnih pogojev pri njihovi uporabi za določitev vsebnosti vitaminov v različnih oblikah prehranskih dopolnil in najbolj pogoste načine priprave takšnih vzorcev za analizo.

Keywords

prehranska dopolnila;vitamini;analizne metode;separacijske tehnike;tekočinska kromatografija;elektroforeza;voltametrija;spektrofluorimetrija;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [M. Nikolić]
UDC: 543.645.5(043.2)
COBISS: 27665155 Link will open in a new window
Views: 487
Downloads: 104
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Other data

Secondary language: English
Secondary title: An overview of methods for determining vitamins in dietary supplements
Secondary abstract: Vitamins are of crucial importance for human health because insufficient intake can cause different diseases. When it's impossible to ensure a sufficient intake of vitamins through the diet, people use dietary supplements. Usage of dietary supplements must be strictly controlled because the excessive intake of vitamins can also be harmful. For that reason, it's important that the amount of vitamins stated on the label of dietary supplement matches the actual amount. To control whether that's true, we need accurate, reliable and fast analytical methods. Some of the most used ones are liquid chromatography, capillary electrophoresis, voltammetry, spectrofluorimetry and supercritical fluid chromatography. This thesis contains short theoretical background for each of these methods, optimal conditions when using them for determination of vitamins in different types of dietary supplements and the most common ways of preparing such samples for the analysis.
Secondary keywords: vitamins;dietary supplements;separation techniques;voltammetry;spectrofluorimetry;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000373
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemija
Pages: 31 str.
ID: 12023753