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Title:SEPARACIJA β -SITOSTEROLA IZ RASTLINSKIH OLJ
Authors:ID Šmic, Katja (Author)
ID Knez, Željko (Mentor) More about this mentor... New window
ID Škerget, Mojca (Comentor)
Files:.pdf UNI_Smic_Katja_2011.pdf (1,79 MB)
MD5: 49ED7C7C19200B0E887EE739A3817FF7
PID: 20.500.12556/dkum/575d92a3-400a-47b2-8079-cd347f0ba2bb
 
Language:Slovenian
Work type:Undergraduate thesis
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V prvem delu diplomske naloge smo določili vsebnost β- sitosterola v rastlinskih oljih (surovo repično in sončnično olje, rafinirano sončnično in repično olje, olje koruznih kalčkov in bučno ter sojino olje). Z uporabo superkritičnih fluidov smo ločili oz. skoncentrirali β-sitosterol iz rastlinskih olj. V ta namen smo izvedli visokotlačne ekstrakcije raslinskih olj (olja koruznih kalčkov, surovo repično in sončnično olje in bučno olje), kjer smo določili vsebnost β-sitosterola v ekstraktu in ostanku po visokotlačni ekstrakciji. V drugem delu diplomske naloge smo izvedli dvostopenjsko visokotlačno ekstrakcijo surovega repičnega olja pri različnih obratovalnih pogojih in določili vsebnost β-sitosterola posamezne stopnje ekstrakcije. S tem smo dobili optimalne pogoje visokotlačne ekstrakcije glede na vsebnost β-sitosterola. Določili smo tudi antioksidativno aktivnost surovega repičnega olja in repičnega olja z dodatkom β-sitosterola.
Keywords:rastlinska olja, steroli, β-sitosterol, visokotlačna ekstrakcija, antioksidativna aktivnost
Place of publishing:Maribor
Publisher:[K. Šmic]
Year of publishing:2011
PID:20.500.12556/DKUM-20862 New window
UDC:664.1.035:665.334.9(043.2)
COBISS.SI-ID:16034070 New window
NUK URN:URN:SI:UM:DK:8JN1WMDD
Publication date in DKUM:07.10.2011
Views:2468
Downloads:137
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Secondary language

Language:English
Title:SEPARATION OF β -SITOSTEROL FROM PLANT OILS
Abstract:In the first part of the thesis, the content of β-sitosterol in vegetable oils (rapeseed and sunflower crude oil, refined sunflower and rapeseed oil, corn oil and pumpkin seed and soybean oil) was determined. By the use of supercritical fluids β-sitosterol was separated and concentrated from the vegetable oils. Therefore, high-pressure extractions of plant oils (corn oil, crude rapeseed oil and sunflower and pumpkin seed oil) were performed, and the content of β-sitosterol in the extract and in the residue was determined. In the second part of the thesis, a two-stage high-pressure extraction of crude rapeseed oil at different operating conditions was performed and the content of β-sitosterol was determined in each stage of extraction. The best operation conditions of extraction regarding the content of β-sitosterol were obtained. Additionally, the antioxidant activity of crude rapeseed oil and rapeseed oil with addition of β-sitosterol was determined.
Keywords:plant oils, sterols, β-sitosterol, high- pressure extaction, antioxidant activity


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