diplomsko delo
Jan van Elteren (Author), Drago Kočar (Mentor)

Abstract

V diplomski nalogi sem določal hlapne komponente v cvetličnem in gozdnem medu. Uporabljal sem HS-SPME-GC-MS. Preveril sem ponovljivost in linearnost metode, ki sta bili zadovoljivi. Določil sem 40 najbolj zastopanih hlapnih spojin v vsaki od vrst medu, ki so ustrezale določenim izbirnim kriterijem. Razdelil sem jih na skupne in na specifične spojine, prisotne le v eni od vrst medu. Skupnih je bilo 26, prevladovali so estri, terpeni in derivati benzena. V obeh vrstah medu so največji odziv dale skupne spojine hotrienol, p-(1-propenil)toluen, metil nonanoat, metil-(Z)-9-oktadecenoat in metil oktanoat. Od specifičnih so bili v cvetličnem medu najbolj zastopani 1,2-dihidronaftalen, benzil nitril in 1-metoksi-4-metilbenzen. V gozdnem so največji odziv imeli terpinen-4-ol, α-terpineol in metil (E)-2-nonenoat. Od teh se 1,2-dihidronaftalen in benzil nitril nista pojavila v niti enem od vzorcev gozdnega medu. Od naštetih spojin, specifičnih za gozdni med, se ni nobena pojavila v niti enem od vzorcev cvetličnega medu. Te spojine bi bile lahko uporabne kot določitveni markerji za slovenski cvetlični in gozdni med.

Keywords

cvetlični med;gozdni med;hlapne organske spojine;mikroekstrakcija na trdno fazo;nadprostor;HS-SPME;plinska kromatografija;masna spektrometrija;GC-MS;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [J. van Elteren]
UDC: 543.544.3:543.51:638.16(043.2)
COBISS: 120795395 Link will open in a new window
Views: 31
Downloads: 18
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Other data

Secondary language: English
Secondary title: Determination of volatile compounds in honey
Secondary abstract: In this thesis I determined the volatile components of mixed floral and forest honey. I used HS-SPME-GC-MS. I examined the reproducibility and linearity of the method, which were satisfactory. I identified the 40 most represented volatile compounds in both types of honey that met certain selection criteria. I divided them into common and into specific compounds, present in only one type of honey. There were 26 common compounds, predominantly esters, terpenes and benzene derivatives. In both honeys, the common compounds hotrienol, p-(1-propenyl) toluene, methyl nonanoate, methyl-(Z)-9-octadecenoate and methyl octanoate were the most abundant. Of the specific components, 1,2-dihydronaphthalene, benzyl nitrile and 1-methoxy-4-methylbenzene had the highest signal in floral honey, while terpinene-4-ol, α-terpineol and methyl (E)-2-nonenoate appeared in forest honey with the highest signal. Of these, 1,2-dihydronaphthalene and benzyl nitrile were not present in any of the forest honeys. None of the listed forest-specific volatiles appeared in any of the floral honey samples. The stated compounds could be used as identification markers for Slovenian mixed floral and forest honey.
Secondary keywords: floral honey;forest honey;volatile organic compounds;Univerzitetna in visokošolska dela;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000373
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemija
Pages: 35 str.
ID: 16270678