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Sinteza in olfaktorno vrednotenje lipofilnih derivatov gvajakola = Synthesis and olfactory evaluation of lipophilic guaiacol derivativesRožič, EvaGvajakol ali 2-metoksifenol je naravni produkt, ki se nahaja v gvajakovi smoli in nastaja pri oksidaciji lignina. Je brezbarvna do rumenkasta viskozna tekočina z značilnim vonjem po dimu. Prav zaradi ... tega ga uporabljamo kot aromatično sredstvo pri pripravi kave, viskija, pomemben je kot izhodna snov pri sintezi vanilina. V medicini ga uporabljamo kot antiseptik, ekspektorant in lokalni anestetik. Kot vsa eterična olja (EO), oziroma pravilneje kot oleorezin, je tudi gvajakova smola zmes med 10 in 200 hlapnih lipofilnih sestavin, med katerimi prevladujejo monoterpenski in seskviterpenski ogljikovodiki. EO so zelo hlapna, kar omogoča, da jih zavohamo tudi v zelo razredčenih oblikah. Namen diplomske naloge je bila sinteza lipofilnih derivatov gvajakola in njihovo olfaktorno ovrednotenje. Iskali smo tiste derivate, ki imajo prijeten vonj za uporabo v parfumih. Spremembe smo izvajali na prosti -OH skupini gvajakola, da smo dobili hlapne estre in etre. Pri reakcijah smo dobili zmesi produktov, ki smo jih nato očistili s kolonsko kromatografijo. Produkte smo analizirali z 1H NMR in IR spektroskopijo ter potrdili, da je 9 od 10 reakcij uspešno poteklo. Nastale produkte smo nato ovrednotili z vonjalnim testom, kjer so prostovoljci ocenjevali prijetnost in jakost vonjev ter ovrednotili svoje asociacije na vzorce. Večina vzorcev jim ni bila prijetna, saj so le tri od devetih označili za prijetne. Pri štirih vzorcih pa so navedli asociacijo na dim, kar pomeni, da so nastali sintezni produkti obdržali značilen (in željen) aromatični vonj gvajakola.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [E. Rožič], 2022Language - slovenianCOBISS.SI-ID - 121304323
Author
Rožič, Eva
Other authors
Obreza, Aleš
Topics
Kromatografska analiza |
Eterična olja |
gvajakol |
eterična olja |
kromatografske metode |
sinteza |
vonjalna analiza |
guaiacol |
essential oils |
cromatographic methods |
synthesis |
olfactory evaluation
Library | Call number – location, accession no. ... | Copy status |
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Faculty of Pharmacy, Lj. | Knjižnica UNK 543 ROŽIČ EVA Sinteza 271 IN: 0017369 |
available - reading room |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Rožič, Eva | |
Obreza, Aleš | 19061 |
Source: Personal bibliographies
and: SICRIS
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