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undergraduate thesis
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THE PRODUCTION OF WALNUT OIL BY SCREW PRESS
Kristina Nikolić (2017)
Polytehnic in Pozega
Metadata
TitlePROIZVODNJA ORAHOVOG ULJA POMOĆU PUŽNE PREŠE
AuthorKristina Nikolić
Mentor(s)Maja Ergović Ravančić (thesis advisor)
Abstract
U ovom radu istraživan je utjecaj procesnih parametara prešanja oraha na efikasnost proizvodnje hladno prešanog orahovog ulja. Prešanje jezgre oraha provedeno je na laboratorijskoj kontinuiranoj pužnoj preši. Prilikom prešanja mijenjali su se procesni parametri: frekvencija elektromotora, nastavak za izlaz pogače i temperatura grijača glave preše. Prešanjem oraha proizvedeno je sirovo ulje s određenim udjelom krutih čestica. Na sirovom ulju provedena je sedimentacija (prirodno taloženje) i vakum filtracija radi uklanjanja krutih čestica. Dobiveni rezultati pokazuju da procesni parametri prešanja utjeću na iskorištenje orahovog ulja. Primjenom standardnih metoda određeni su osnovni parametri kvalitete hladno prešanog orahovog ulja: slobodne masne kiseline, peroksidni broj, udio vlage i netopljivih nečistoća te jodni broj i saponifikacijski broj.
Keywordswalnut snail press process parameters cold pressed walnut oil
Parallel title (English)THE PRODUCTION OF WALNUT OIL BY SCREW PRESS
Committee MembersValentina Obradović (committee chairperson)
Maja Ergović Ravančić (committee member)
Svjetlana Škrabal (committee member)
GranterPolytehnic in Pozega
PlacePožega
StateCroatia
Scientific field, discipline, subdisciplineBIOTECHNICAL SCIENCES
Food Technology
Engineering
Study programme typeprofessional
Study levelundergraduate
Study programmeFood Technology
Academic title abbreviationbacc. ing. techn. aliment.
Genreundergraduate thesis
Language Croatian
Defense date2017-09-11
Parallel abstract (English)
This paper discussed the influence of process pressures on the efficiency of cold pressed oil production. The pressing of the walnut core was carried out on a laboratory continuous press. When pressed, the process parameters are changed: electric motor frequency, coffee outlet and press head temperature. By pressing the walnut, a crude oil with a certain percentage of solid particles was produced. On crude oil, sedimentation (natural precipitation) and vacuum filtration were performed to remove solid particles. The results show that the process parameters of pressing impacts on the exploitation of the walnut oil. By applying standard methods, the basic parameters of the cold oil quality are defined: free fatt acid, peroxide number, moisture content and insoluble impurities, iodine number and saponification number.
Parallel keywords (Croatian)orah pužna preša procesni parametri hladno prešano orahovo ulje
Resource typetext
Access conditionAccess restricted to students and staff of home institution
Terms of usehttp://rightsstatements.org/vocab/InC/1.0/
URN:NBNhttps://urn.nsk.hr/urn:nbn:hr:112:744169