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undergraduate thesis
Ekstrakcija ulja iz biljaka
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. urn:nbn:hr:149:807997
Rimac, Marija
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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Rimac, M. (2018). Ekstrakcija ulja iz biljaka (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:807997

Rimac, Marija. "Ekstrakcija ulja iz biljaka." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:149:807997

Rimac, Marija. "Ekstrakcija ulja iz biljaka." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:149:807997

Rimac, M. (2018). 'Ekstrakcija ulja iz biljaka', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 03 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:807997

Rimac M. Ekstrakcija ulja iz biljaka [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2018 [cited 2024 November 03] Available at: https://urn.nsk.hr/urn:nbn:hr:149:807997

M. Rimac, "Ekstrakcija ulja iz biljaka", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:149:807997

Metadata
TitleEkstrakcija ulja iz biljaka
Title (english)Extraction of oils from plants
AuthorMarija Rimac
MentorAleksandra Sander (mentor)
Committee memberAleksandra Sander (predsjednik povjerenstva)
Committee memberJasna Prlić Kardum (član povjerenstva)
Committee memberVesna Tomašić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2018-09-04, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Mechanical, Thermal and Separation Processes
Abstract
Proces ekstrakcije se često koristi u kemijskoj i farmaceutskoj, a nešto rjeđe u prehrambenoj industriji. U ovom radu je opisano dobivanje ulja iz sjemena oraha, lješnjaka, badema i suncokreta, i to sirovina domaćeg i industrijskog porijekla. Proces se odvijao pomoću Soxhletovog ekstraktora, koristeći organska otapala n-heksan i n-heptan. Iako je prinos na ulju prilikom ekstrakcije otapalom veći nego kod drugih postupaka dobivanja ulja, kao što su centrifugiranje i prešanje, ona se nešto rjeđe koristi zbog lošijih ekoloških karakteristika. Cilj samog rada je bio utvrditi efikasnost same ekstrakcije ovisno o vrsti, porijeklu sirovine, korištenom otapalu te vremenu trajanja procesa. Ekstrahiranom ulju je određena gustoća i viskoznost. Eksperimentom se n-heksan pokazao kao bolje otapalo u većini slučajeva. Uzorci domaćeg uzgoja su sadržavali nešto manje ulja od uzoraka industrijskog porijekla, ali je određivanjem udjela slobodnih masnih kiselina utvrđeno da su oni bolje kvalitete. Proces ekstrakcije je u prosjeku je trajao 20, do maksimalnih 30 minuta.
Abstract (english)
The extraction process is often used in chemical and pharmaceutical industry, and less frequently in the food industry. This work describes the production of walnut, hazelnut, almond and sunflower seed oil, which is a raw material of domestic and industrial origin. The process was carried out using a Soxhlet extractor and organic solvents n-hexane and n-heptane. Although the oil yield when extracted with a solvent is higher than other oil recovery processes, such as cold pressing and centrifugation, it is less commonly used because of its bad environmental impact. The aim of this work was to determine the efficiency of extraction depending on type, origin of the raw material, the solvent used and the process duration. Density and viscosity of extracted oils were measured. The experiment resulted with n-hexane as better solvent in most cases. Domestic samples contained slightly less oil than samples of industrial origin, but by determining the proportion of free fatty acids they were found to be of better quality. The extraction process lasted between 20 and 30 minutes.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:807997
Study programmeTitle: Environmental Engineering - Undergraduate study
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2021-06-24 09:57:10