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master's thesis
Optimiranje parametara ekstrakcije fenolnih spojeva korijena i lista maslačka primjenom ultrazvuka visokog intenziteta
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2016. urn:nbn:hr:159:442479
Marić, Antonela
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Process Engineering
Laboratory of Thermodynamics

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

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Marić, A. (2016). Optimiranje parametara ekstrakcije fenolnih spojeva korijena i lista maslačka primjenom ultrazvuka visokog intenziteta (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:442479

Marić, Antonela. "Optimiranje parametara ekstrakcije fenolnih spojeva korijena i lista maslačka primjenom ultrazvuka visokog intenziteta." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2016. https://urn.nsk.hr/urn:nbn:hr:159:442479

Marić, Antonela. "Optimiranje parametara ekstrakcije fenolnih spojeva korijena i lista maslačka primjenom ultrazvuka visokog intenziteta." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2016. https://urn.nsk.hr/urn:nbn:hr:159:442479

Marić, A. (2016). 'Optimiranje parametara ekstrakcije fenolnih spojeva korijena i lista maslačka primjenom ultrazvuka visokog intenziteta', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 22 July 2024, https://urn.nsk.hr/urn:nbn:hr:159:442479

Marić A. Optimiranje parametara ekstrakcije fenolnih spojeva korijena i lista maslačka primjenom ultrazvuka visokog intenziteta [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2016 [cited 2024 July 22] Available at: https://urn.nsk.hr/urn:nbn:hr:159:442479

A. Marić, "Optimiranje parametara ekstrakcije fenolnih spojeva korijena i lista maslačka primjenom ultrazvuka visokog intenziteta", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:159:442479

Metadata
TitleOptimiranje parametara ekstrakcije fenolnih spojeva korijena i lista maslačka primjenom ultrazvuka visokog intenziteta
Title (english)Optimization of extraction parameters of phenolic compounds from dandelion root and leaf using high intensity ultrasound
AuthorAntonela Marić
MentorMladen Brnčić (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Process Engineering)
(Laboratory of Thermodynamics)
Zagreb
Defense date and country2016-09-26, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract
Ekstrakcija potpomognuta ultrazvukom visokog intenziteta je nekonvencionalna metoda ekstrakcije analita otapalom iz uzorka mehaničkim djelovanjem ultrazvučnih valova čime se postiže bolje iskorištenje uz manju potrošnju otapala i kraće vrijeme ekstrakcije, te nižu potrošnju energije. Cilj ovog rada je bio istraživanje optimalnih uvjeta ekstrakcije potpomognute ultrazvukom visokog intenziteta, te poboljšati iskorištenje ukupnih fenola iz korijena i lista maslačka. U svrhu što bolje ekstrakcije ispitana su različita otapala (50%-tna vodena otopina metanola i 70%-tna vodena otopina metanola), različito vrijeme obrade ultrazvukom visokog intenziteta ( 3, 6, 9 minuta) i različite amplitude (50%, 75% i 100%). Rezultati su pokazali da se primjenom 70%-tne vodene otopine metanola, amplitude od 100% i pri vremenu obrade ultrazvukom od 9 minuta postiže najviši ekstrakcijski kapacitet ukupnih fenola.
Abstract (english)
Ultrasound-assisted extraction is uncoventional extraction method and utilizes a mechanical effects of acoustic cavitation and has following advantages in comparison to conventional extraction techniques: improved efficiency with lower solvent consumption, reduced extraction time and lower energy consumption. The aim of this study was to select optimal extraction parameters like solvent composition (50% aqueous solution of methanol and 70% aqueous solution of methanol), extraction time (3, 6, 9 minutes) temperature and different amplitude of ultrasound (50%, 75% and 100%) for isolation of total phenolic content from dandelion root and leaf. The results showed that the most efficient extraction parameters for extraction of total phenols were achieved by using 70% aqueous solution of methanol, with amplitude of 100% and at extraction time of 9 minutes.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:442479
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 on2017-04-26 08:13:04