Izolacija eteričnih olj iz poprove mete ( mentha piperita)

diplomsko delo univerzitetnega študijskega programa I. stopnje

Liza Curk (Author), Maša Knez Hrnčič (Mentor), Petra Kotnik (Co-mentor)

Abstract

Pri diplomski nalogi smo iz poprove mete, lat. Mentha piperita, izolirali eterična olja z različnimi kovnencionalnimi in nekonvencionalnimi metodami. Pri vseh ekstrakcijskih metodah smo uporabili tri topila, metanol, etanol in petroleter, z izjemo Clevengerjeve destilacije, kjer je topilo voda. Nato smo ekstrakte analizirali na vsebnost lahkohlapnih komponent in kvalitativno in kvantitativno določili sestavo olj s pomočjo plinske kromatografije z masno spektrometrijo. Identificiranih je bilo 71 komponent, v najvišjih deležih pa se v eteričnem olju pojavljajo mentol (37,7 %), menton (31,2 %), neomentol (3,3 %), piperiton (2,6 %) in mentil acetat (2,6 %). Ugotovljeno je bilo, da so bili najvišji izkoristki ektrakcij doseženi z ekstrakcijo po Soxhletu, čeprav so bili v splošnem izkoriski zelo nizki. Preučevali smo tudi vpliv topila na izkoristek ekstrakcije in ugotovili, da je najprimernejše topilo metanol, pri analizi vsebnosti pa lahko vidimo, da so se pri vseh treh topilih izločale enake glavne komponente. Poleg tega so rezultati pokazali, da so bile kemične sestavine eteričnih olj pri vseh metodah podobne z manjšimi količinskimi razlikami.

Keywords

izolacija;separacija;GC-MS;eterična olja;destilacija;diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2023
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[L. Curk]
UDC:	547.913(043.2)
COBISS:	170143491
Views:	61
Downloads:	0
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Peppermint oil extraction and isolation ( mentha piperita)
Secondary abstract:	For this thesis, we isolated essential oils from Mentha piperita, also known as peppermint, using various conventional and non-conventional methods. All extraction methods were carried out with three solvents, methanol, ethanol and petroleum ether, with the exception of Clevenger distillation, where the solvent was water. The extracts were then analysed for the content of volatile components and the composition of the oils was determined qualitatively and quantitatively by gas chromatography-mass spectrometry. Seventy-one components were identified, with menthol (37,7 %), menthone (31,2 %), neomenthol (3,3 %), piperitone (2,6 %) and menthyl acetate (2,6 %) occurring in the highest proportions in the essential oil. The highest extraction yields were found to be obtained with the Soxhlet extraction, although the yields were generally very low. The effect of solvent on the extraction yield was also investigated and methanol was found to be the most suitable solvent. From the analised data we can claim that the same main components were extracted with all three solvents. In addition, the results showed that the chemical constituents of the essential oils were similar in all methods with minor quantitative differences.
Secondary keywords:	isolation;separation;GC-MS;essential oil;destilation;
Type (COBISS):	Bachelor thesis/paper
Embargo end date (OpenAIRE):	2026-09-01
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	1 spletni vir (1 datoteka PDF (X, 37 f.))
ID:	19831558