Kvalitativna fazna analiza zrnc za pripravo vitaminskih napitkov z rentgensko praškovno difrakcijo

Strašek, Nika (author), Počkaj, Marta (mentor)

Vitamini so organske spojine, ki jih naše telo v majhnih količinah potrebuje za normalno delovanje. Če jih ne vnesemo dovolj z raznoliko prehrano, se poslužujemo vitaminskih dodatkov in napitkov. Veliko ljudi posega po le-teh, zato sem se odločila preveriti njihovo fazno sestavo. To sem analizirala z rentgensko praškovno difrakcijo, pri kateri z rentgensko svetlobo specifične valovne dolžine obsevamo vzorce. Vsak od vzorcev je vseboval kristalinične snovi, saj je to pogoj za izvedbo analize. Metoda temelji na periodično urejeni strukturi kristalov. Kvalitativno praškovno analizo na osnovi posnetih praškovnih difraktogramov, sem izvedla s programom Crystallographica Search-Match (CSM) in podatkovne zbirke praškovnih difraktogramov standardov PDF-2. Analizirala sem 15 vzorcev različnih zrnc za pripravo vitaminskih napitkov. Ugotovila sem, da so si vzorci podobni, saj vsi razen enega vsebujejo saharozo, se pa med seboj tudi razlikujejo. Poleg saharoze sem pri večini vzorcev lahko ugotovila prisotnost različnih sladkorjev.

• Language: Slovenian
• Keywords: rentgenska praškovna difrakcija, kvalitativna fazna analiza, vitaminski napitki
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Year: 2024
• PID: 20.500.12556/RUL-159299
• COBISS.SI-ID: 203418627
• Publication date in RUL: 05.07.2024

Secondary language

• Language: English
• Title: Qualitative phase analysis of granules of instant vitamin drinks by means of X-ray powder diffraction

Abstract

Vitamins are organic compounds that our body needs in small quantities for normal functioning. If we do not consume enough of them through a varied diet, we resort to vitamin supplements and drinks. Many people use these, so I decided to examine their phase composition. I analyzed this using X-ray powder diffraction, where samples are irradiated with X-ray light of a specific wavelength. Each sample contained crystalline substances, as this is a prerequisite for the analysis. The method is based on the periodically ordered structure of crystals. I performed a qualitative powder analysis based on the recorded powder diffractograms using the Crystallographica Search-Match (CSM) program and the PDF-2 powder diffraction standards database. I analyzed 15 samples of different granules for the preparation of vitamin drinks. I found that the samples are similar, as all but one contain sucrose, but they also differ from each other. In addition to sucrose, I was able to identify the presence of various sugars in most samples.

• Keywords: X-ray powder diffraction, qualitative phase analysis, vitamin drinks