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master's thesis
Utjecaj ultrazvuka visokog intenziteta na fizikalno-kemijska svojstva i mikrobiološka svojstva sirutke
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2014. urn:nbn:hr:159:205382
Grubišić, Ivana
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Food Engineering
Laboratory for Technology of Milk and Milk Products

Institutional repository: Repository of the Faculty of Food Technology and Biotechnology

Cite this document

Grubišić, I. (2014). Utjecaj ultrazvuka visokog intenziteta na fizikalno-kemijska svojstva i mikrobiološka svojstva sirutke (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:205382

Grubišić, Ivana. "Utjecaj ultrazvuka visokog intenziteta na fizikalno-kemijska svojstva i mikrobiološka svojstva sirutke." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2014. https://urn.nsk.hr/urn:nbn:hr:159:205382

Grubišić, Ivana. "Utjecaj ultrazvuka visokog intenziteta na fizikalno-kemijska svojstva i mikrobiološka svojstva sirutke." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2014. https://urn.nsk.hr/urn:nbn:hr:159:205382

Grubišić, I. (2014). 'Utjecaj ultrazvuka visokog intenziteta na fizikalno-kemijska svojstva i mikrobiološka svojstva sirutke', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 18 March 2025, https://urn.nsk.hr/urn:nbn:hr:159:205382

Grubišić I. Utjecaj ultrazvuka visokog intenziteta na fizikalno-kemijska svojstva i mikrobiološka svojstva sirutke [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2014 [cited 2025 March 18] Available at: https://urn.nsk.hr/urn:nbn:hr:159:205382

I. Grubišić, "Utjecaj ultrazvuka visokog intenziteta na fizikalno-kemijska svojstva i mikrobiološka svojstva sirutke", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:159:205382

Metadata
TitleUtjecaj ultrazvuka visokog intenziteta na fizikalno-kemijska svojstva i mikrobiološka svojstva sirutke
Title (english)Effects of high-intensity ultrasound on physical, chemical and microbiological properties of whey
AuthorIvana Grubišić
MentorRajka Božanić (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Food Engineering)
(Laboratory for Technology of Milk and Milk Products)
Zagreb
Defense date and country2014-09-22, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract
Sirutka predstavlja visokovrijedan nusproizvod koji zaostaje nakon izdvajanja kazeina i mliječne masti tijekom sirenja. Dugo je vremena smatrana otpadnim produktom u sirarstvu dok se posljednjih godina bilježi porast proizvodnje napitaka na bazi sirutke kao i raznih drugih proizvoda koji nastaju izdvajanjem sirutkinih proteina i drugih sastojaka sirutke. Također u posljednje vrijeme raste trend minimalno procesirane hrane, a kao jedan od načina minimalnog procesiranja se javlja ultrazvuk. Cilj ovog rada je bio ispitati kako tretman ultrazvuka visokog intenziteta utječe na svojstva sirutke od kojih su ispitivani: viskoznost, električna vodljivost, veličina čestica, titracijska kiselost, pH, ukupan broj mikroorganizama, te udio proteina i senzorske karakteristike sirutke. Ispitivanjem je utvrđeno da ultrazvuk ima povoljan utjecaj na sirutku jer smanjuje broj mikroorganizama i poboljšava senzorske karakteristike. Sve to ukazuje na to da bi ultrazvuk mogao biti zamjena komercijalnim tretmanima sirutke.
Abstract (english)
Whey is a highly valuable by-product which lags after the separation of casein and fat during cheesemaking. For a long time it was considered to be a waste product but in the last few years there has been an increase in the production of whey-based beverages and as well as a variety of other products made of whey protein and other whey component. Also recently is growing a trend of minimally processed food. As one type of minimal processing occurs ultrasound. The aim of this thesis was to assay how treatment of high intensity ultrasound affects the properties of whey from which were tested: viscosity, electrical conductivity, particle size, titratable acidity, pH, and total number of microorganisms, protein content and sensory properties. The study found that ultrasound has favorable effect on the whey as it reduces the number of microorganisms and improves sensory characteristics. All this indicates that ultrasound could be a good alternative to commercial whey treatments.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:205382
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 conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2017-05-02 11:00:52