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master's thesis
Utjecaj dodatka kakao ljuske na svojstva kukuruznih ekstrudata
Osijek: Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, 2015. urn:nbn:hr:109:726320
Vrdoljak, Anđela
Josip Juraj Strossmayer University of Osijek
FACULTY OF FOOD TECHNOLOGY
Department of Food Technologies
Sub-department of Carbohydrates Technology

Institutional repository: Repository of the Faculty of Food Technology Osijek

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Vrdoljak, A. (2015). Utjecaj dodatka kakao ljuske na svojstva kukuruznih ekstrudata (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY. Retrieved from https://urn.nsk.hr/urn:nbn:hr:109:726320

Vrdoljak, Anđela. "Utjecaj dodatka kakao ljuske na svojstva kukuruznih ekstrudata." Master's thesis, Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, 2015. https://urn.nsk.hr/urn:nbn:hr:109:726320

Vrdoljak, Anđela. "Utjecaj dodatka kakao ljuske na svojstva kukuruznih ekstrudata." Master's thesis, Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, 2015. https://urn.nsk.hr/urn:nbn:hr:109:726320

Vrdoljak, A. (2015). 'Utjecaj dodatka kakao ljuske na svojstva kukuruznih ekstrudata', Master's thesis, Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:109:726320

Vrdoljak A. Utjecaj dodatka kakao ljuske na svojstva kukuruznih ekstrudata [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY; 2015 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:109:726320

A. Vrdoljak, "Utjecaj dodatka kakao ljuske na svojstva kukuruznih ekstrudata", Master's thesis, Josip Juraj Strossmayer University of Osijek, FACULTY OF FOOD TECHNOLOGY, Osijek, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:109:726320

Metadata
TitleUtjecaj dodatka kakao ljuske na svojstva kukuruznih ekstrudata
Title (english)Influence of cocoa shell addition on properties of corn extrudates
AuthorAnđela Vrdoljak
MentorDrago Šubarić (mentor)
MentorAntun Jozinović (pomoć pri izradi, neposredni voditelj)
Committee memberJurislav Babić (predsjednik povjerenstva)
Committee memberDrago Šubarić (član povjerenstva)
Committee memberMarko Jukić (član povjerenstva)
Committee memberBorislav Miličević (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
FACULTY OF FOOD TECHNOLOGY
(Department of Food Technologies)
(Sub-department of Carbohydrates Technology)
Osijek
Defense date and country2015-10-21, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Engineering
Abstract
Ekstruzija je jedan od najznačajnijih procesa u prehrambenoj industriji gdje se vrlo često kao osnovna sirovina koristi kukuruzna krupica. Zbog poboljšanja fizikalno-kemijskih svojstava i nutritivne vrijednosti proizvoda, u kukuruznu krupicu se mogu dodavati brašna različitih žitarica, osušeno voće i povrće i dr. Cilj ovoga rada bio je ispitati utjecaj ekstruzije i dodatka kakao ljuske (s udjelom 5%, 10% i 15%) na svojstva ekstrudata na bazi kukuruzne krupice. Dobivenim ekstrudatima ispitana su fizikalna i reološka svojstva u odnosu na neekstrudirane uzorke. Utvrđeno je da dodatkom kakao ljuske dolazi do smanjenja ekspanzijskog omjera i povećanja nasipne mase, kao i povećanja tvrdoće i smanjenja lomljivosti ekstrudata. Ekstruzija je uzrokovala posvjetljenje kod kukuruzne krupice.Dodatkom kakao ljuske došlo je do potamnjivanja uzoraka. Indeks apsorpcije vode i indeks topljivosti u vodi povećali su se nakon ekstruzije. Dodatkom kakao ljuske i postupkom ekstruzije došlo je do smanjenja viskoznosti vrha te su ekstrudirani uzorci bili manje skloni retrogradaciji, a neekstrudirani su pokazali bolju stabilnost tijekom miješanja na visokoj temperaturi.
Abstract (english)
Extrusion is one of the most significant processes in food industry, where corn grits is often used as main raw material. In order to increase nutritive value and improve physical and chemical properties, in corn meal can be added flours of different grains, dehydrated fruits and vegetables, etc. The aim of the study was to investigatethe properties of corn grits extrudates with addition of cocoa shell (with a share of 5%, 10% and 15%). Physicalandrheologicalproperties ofthe obtainedextrudateswere investigatedinrelationtonon extrudedsamples. Results showed a decrease inexpansionratioandan increaseof bulkdensity, increased extrudatehardnessanddecreased fracturability with addition of cocoa shell.Extrusion caused increase of lightness at samples with corn grits.With addition of cocoa shellsamples became darker. Water absorption and water solubility indexes were increased after extrusion process. The addition of cocoa shell and extrusion decreased peak viscosity and the extruded samples were less prone to retrogradation, but non-extruded samples showed better stability during mixing at high temperature.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:109:726320
ProjectNumber: IP-2013-11-1321
Title: Primjena nusproizvoda prehrambene industrije za razvoj funkcionalnih i okolišno prihvatljivih ekstrudiranih proizvoda i aditiva
Title: Application of food industry by-products in development of functional and environmentally friendly extruded food products and additives
Acronym: FUNEXFOOD
Leader: Drago Šubarić
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
Study programmeTitle: 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 resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2015-10-23 12:29:36