Utjecaj parametara hladnog prešanja bučine koštice (golice) na iskorištenje bučinog ulja

Gajšek, Maja

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master's thesis

Utjecaj parametara hladnog prešanja bučine koštice (golice) na iskorištenje bučinog ulja

Osijek: Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, 2016. urn:nbn:hr:109:208400

Gajšek, Maja

Josip Juraj Strossmayer University of Osijek
FACULTY OF FOOD TECHNOLOGY
Department of Food Technologies
Sub-department of Food Engineering

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APA 6th Edition

Gajšek, M. (2016). Utjecaj parametara hladnog prešanja bučine koštice (golice) na iskorištenje bučinog ulja (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY. Retrieved from https://urn.nsk.hr/urn:nbn:hr:109:208400

MLA 8th Edition

Gajšek, Maja. "Utjecaj parametara hladnog prešanja bučine koštice (golice) na iskorištenje bučinog ulja." Master's thesis, Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, 2016. https://urn.nsk.hr/urn:nbn:hr:109:208400

Chicago 17th Edition

Harvard

Gajšek, M. (2016). 'Utjecaj parametara hladnog prešanja bučine koštice (golice) na iskorištenje bučinog ulja', Master's thesis, Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, accessed 05 January 2025, https://urn.nsk.hr/urn:nbn:hr:109:208400

Vancouver

Gajšek M. Utjecaj parametara hladnog prešanja bučine koštice (golice) na iskorištenje bučinog ulja [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY; 2016 [cited 2025 January 05] Available at: https://urn.nsk.hr/urn:nbn:hr:109:208400

IEEE

M. Gajšek, "Utjecaj parametara hladnog prešanja bučine koštice (golice) na iskorištenje bučinog ulja", Master's thesis, Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, Osijek, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:109:208400

Cite this item: https://urn.nsk.hr/urn:nbn:hr:109:208400

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Title	Utjecaj parametara hladnog prešanja bučine koštice (golice) na iskorištenje bučinog ulja
Title (english)	The influence of process parameters on the yield and quality of cold-pressed pumpkin seed oil
Author	Maja Gajšek
Mentor	Tihomir Moslavac (mentor)
Committee member	Vedran Slačanac (predsjednik povjerenstva)
Committee member	Tihomir Moslavac (član povjerenstva)
Committee member	Stela Jokić (član povjerenstva)
Committee member	Jurislav Babić (član povjerenstva)
Granter	Josip Juraj Strossmayer University of Osijek FACULTY OF FOOD TECHNOLOGY (Department of Food Technologies) (Sub-department of Food Engineering) Osijek
Defense date and country	2016-10-10, Croatia
Scientific / art field, discipline and subdiscipline	BIOTECHNICAL SCIENCES Food Technology Engineering
Abstract	U ovom diplomskom radu istraživan je utjecaj procesnih parametara prešanja bučine koštice (golice) na efikasnost proizvodnje hladno prešanog bučinog ulja te na njegovu kvalitetu. Prešanje bučine koštice provedeno je na laboratorijskoj pužnoj preši za proizvodnju hladno prešanih biljnih ulja. Prešanjem koštice došli smo do tri proizvoda: sirovo ulje, uljni talog i pogača. Tijekom samog procesa prešanja mjenjali su se procesni parametri: temperatura glave preše, brzina pužnice i nastavak za izlaz pogače. Nakon završetka procesa prešanja provedeno je prirodno taloženje dobivenog sirovog ulja te centrifugiranje. Primjenjujući standardne metode određeni su parametri kvalitete ulja: peroksidni broj, slobodne masne kiseline, udio netopljivih nečistoća, udio vlage i hlapljivih tvari. Za određivanje efikasnosti proizvodnje ulja provedeno je ispitivanje udjela ulja u koštici i pogači metodom po Soxhlet-u. Rezultati pokazuju da je primjenom veće temperature glave preše tijekom prešanja bilo skorištenje ulja veće. Upotrebom nastavka manjeg promjera za izlaz pogače dolazi do porasta tlaka u preši, a samim time i do većeg iskorištenja sirovog ulja.
Abstract (english)	The goal of this diploma work was exploring the influence of the process parameters in cold-pressing of the pumpkin seeds, on the efficiency of the production of the pumpkin seed oil and it's quality. Cold-pressing of the pumpkin seed was done on a laboratory press used for the production of the cold-pressed vegetable oils. In the process of cold-pressing we've gained three products: unpurified crude oil, oil sludge and cake of. During the pressing process, the parameters were changed: the temperature of head press, the frequency, and output cake thickness. After the pressing, the produced raw oil was left to naturally settle and was afterwards centrifugated. Applying the standard procedures, the parameters of the oil quality were defined: peroxide number, free fatty acids, proportion of insoluble impurities, quantity of moisture and evaporable substances. To determine the efficiency of production we conducted behind oil expeller method of Soxhlet. Applying higher temperatures head presses for molding a greater yield of oil. Using the extension of a smaller diameter for the cake comes out to increase the pressure in the press, and thus a higher yield of the crude oil. Frequency during compression affects the yield of oil.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:109:208400
Study programme	Title: Food Engineering Study programme type: university Study level: graduate Academic / professional title: magistar/magistra inženjer/inženjerka prehrambenog inženjerstva (magistar/magistra inženjer/inženjerka prehrambenog inženjerstva)
Type of resource	Text
File origin	Born digital
Access conditions	Open access
Terms of use
Repository	Repository of the Faculty of Food Technology Osijek
Created on	2016-10-11 10:55:07