prikaz prve stranice dokumenta Izolacija flavonol glikozida iz cvijeta trnine primjenom ekstrakcije potpomognute ultrazvukom
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master's thesis
Izolacija flavonol glikozida iz cvijeta trnine primjenom ekstrakcije potpomognute ultrazvukom
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2016. urn:nbn:hr:159:071474
Čunčić, Kristina
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Food Engineering
Laboratory for Technology of Fruits and Vegetables Preservation and Processing

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

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Čunčić, K. (2016). Izolacija flavonol glikozida iz cvijeta trnine primjenom ekstrakcije potpomognute ultrazvukom (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:071474

Čunčić, Kristina. "Izolacija flavonol glikozida iz cvijeta trnine primjenom ekstrakcije potpomognute ultrazvukom." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2016. https://urn.nsk.hr/urn:nbn:hr:159:071474

Čunčić, Kristina. "Izolacija flavonol glikozida iz cvijeta trnine primjenom ekstrakcije potpomognute ultrazvukom." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2016. https://urn.nsk.hr/urn:nbn:hr:159:071474

Čunčić, K. (2016). 'Izolacija flavonol glikozida iz cvijeta trnine primjenom ekstrakcije potpomognute ultrazvukom', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 21 December 2024, https://urn.nsk.hr/urn:nbn:hr:159:071474

Čunčić K. Izolacija flavonol glikozida iz cvijeta trnine primjenom ekstrakcije potpomognute ultrazvukom [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2016 [cited 2024 December 21] Available at: https://urn.nsk.hr/urn:nbn:hr:159:071474

K. Čunčić, "Izolacija flavonol glikozida iz cvijeta trnine primjenom ekstrakcije potpomognute ultrazvukom", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:159:071474

Metadata
TitleIzolacija flavonol glikozida iz cvijeta trnine primjenom ekstrakcije potpomognute ultrazvukom
Title (english)Isolation of flavonol glycosides from blackthorn flowers using ultrasound assisted extraction
AuthorKristina Čunčić
MentorVerica Dragović Uzelac (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Food Engineering)
(Laboratory for Technology of Fruits and Vegetables Preservation and Processing)
Zagreb
Defense date and country2016-07-14, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract
Cilj ovog istraživanja bio je istražiti utjecaj ekstrakcije potpomognute ultrazvukom na prinos flavonol glikozida iz cvijeta trnine, pri čemu su varirani polarnost otapala (50 i 70 % vodena otopina etanola), amplituda ultrazvuka (50, 75 i 100%) i vrijeme ekstrakcije (3, 6 i 9 minuta). Ekstrakcija je provedena pri konstantnoj jakosti ultrazvuka (400W), promjeru sonde (7 mm) i ciklusu (1). Identifikacija i kvantifikacija flavonol glikozida provedena je primjenom ultra djelotvorne tekućinske kromatografije sa masenom spektrometrijom (UPLC-MS/MS). Identificirano je 16 flavonol glikozida i to 8 kamferol glikozida i 7 kvercetin glikozida te izoramnetin-3-rutinozid. Najbolji prinosi flavonol glikozida postižu se uz primjenu 70%-tne vodene otopine etanola, vremenu ekstrakcije 6 minuta i pri amplitudi 50%.
Abstract (english)
The aim of this study was to examine the influence of ultrasound assisted extraction on the yield of flavonol glycosides in blackthorn flowers. The polarity of the solvent (50 and 70% aquaeous ethanol), ultrasound amplitude (50, 75 and 100 %) and extraction time (3, 6, 9 minutes) were varied, whereas intensity of ultrasound (400 W), the diameter of the probe (7 mm) and cycle (1) were constant. Ultra performance liquid chromatography mass spectrometry (UPLC-MS/MS) was used for the identification and quantification of flavonol glycosides. Sixteen flavonol glycosides were identified: 7 quercetin glycosides, 8 kampferol glycosides and isoramnetin-3-rutionoside. The highest flavonol glycosides yield was obtained using 70 % aquaeous solution of ethanol, extraction time 6 minutes and amplitude 50 %.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:071474
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 on2017-04-24 12:26:27