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master's thesis
Fitosinteza nanočestica selena korištenjem ekstrakta komine rajčice i kore mandarine
Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry, 2020. urn:nbn:hr:163:336128
Gagro, Maja
University of Zagreb
Faculty of Pharmacy and Biochemistry
Department of food chemistry

Institutional repository: Repository of Faculty of Pharmacy and Biochemistry University of Zagreb

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Gagro, M. (2020). Fitosinteza nanočestica selena korištenjem ekstrakta komine rajčice i kore mandarine (Master's thesis). Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:163:336128

Gagro, Maja. "Fitosinteza nanočestica selena korištenjem ekstrakta komine rajčice i kore mandarine." Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, 2020. https://urn.nsk.hr/urn:nbn:hr:163:336128

Gagro, Maja. "Fitosinteza nanočestica selena korištenjem ekstrakta komine rajčice i kore mandarine." Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, 2020. https://urn.nsk.hr/urn:nbn:hr:163:336128

Gagro, M. (2020). 'Fitosinteza nanočestica selena korištenjem ekstrakta komine rajčice i kore mandarine', Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:163:336128

Gagro M. Fitosinteza nanočestica selena korištenjem ekstrakta komine rajčice i kore mandarine [Master's thesis]. Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry; 2020 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:163:336128

M. Gagro, "Fitosinteza nanočestica selena korištenjem ekstrakta komine rajčice i kore mandarine", Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:163:336128

Metadata
TitleFitosinteza nanočestica selena korištenjem ekstrakta komine rajčice i kore mandarine
Title (english)Phytosynthesis of selen nanoparticles using extracts of tomato pomace and tangerine peel
AuthorMaja Gagro
MentorDubravka Vitali Čepo (mentor)
Committee memberDubravka Vitali Čepo (predsjednik povjerenstva)
Committee memberLovorka Vujić (član povjerenstva)
Committee memberMaja Ortner Hadžiabdić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Pharmacy and Biochemistry
(Department of food chemistry)
Zagreb
Defense date and country2020-10-06, Croatia
Scientific / art field,
discipline and subdiscipline		BIOMEDICINE AND HEALTHCARE
Pharmacy
Pharmacy
Abstract
U okviru ove studije istražena je mogućnost korištenja ekstrakata kore mandarine i komine rajčice bogatih polifenolima u fitosintezi nanočestica selena sa ciljem postizanja adsorpcije bioaktivnih komponenti iz navedenih ekstrakta na površinu nastalih nanočestica i postizanja poželjnih promjena njihovih svojstava. Postupci fitosinteze karakterizirani su obzirom na iskorištenje postupka raspodjelu veličina čestica, zeta potencijal, antiradikalnu i reduktivnu sposobnost. Korištenje istraživanih prirodnih ekstrakata povećava iskoristivost postupka biogene sinteze, a nastale čestice su značajno veće sa širom raspodjelom veličine čestica, te značajno negativnijeg zeta-potencijala u odnosu na kemijski sintetizirane.. Fitonanoselen sintetiziran uz kominu rajčice pokazivao je značajnu reduktivnu sposobnost dok je antiradikalna učinkovitost bila usporediva sa onom kemijski sintetiziranog nanoselena (zanemariva) što je vjerojatno posljedica adsorpcije reduktivnih šećera prisutnih u ekstraktu na površinu nanočestica. Fitonanoselen sintetiziran uz kori mandarine pokazao je znatno veću antiradikalnu i reduktivnu sposobnost u odnosu na kemijski sintetizirani nanoselen što je vjerojatno posljedica adsorpcije polifenola prisutnih u ekstraktu na površinu nanočestica. Usprkos prednostima, postupke fitosinteze nanoselena potrebno je dodatno optimirati kako bi se dobile uniformnije i manje nanočestice.
Abstract (english)
The study investigated the possibility of using tangerine peel and tomato pomace extracts rich in polyphenols in the phytosynthesis of selenium nanoparticles. The goal was to achieve adsorption of bioactive components from these extracts on the surface of the nanoparticles resulting in desirable changes in nanoselenium properties. Applicability of proposed phytosynthesis processes was characterized in terms of utilization, particle size distribution, zeta potential, antiradical and reductive properties. The use of investigated natural extracts increased the efficiency of phytosynthesis process, and the resulting particles were significantly larger with a wider distribution of particle size, and significantly higher negative zeta potential. This is probably due to the adsorption of reducing sugars present in the extract on the surface of the nanoparticles. Phytonanoselen synthesized with mandarin peel showed significantly higher antiradical and reductive ability compared to chemically synthesized nanoselen, which is probably due to the adsorption of polyphenols present in the extract on the surface of nanoparticles. Despite the advantages, nano-selenium phytosynthesis processes need to be further optimized to obtain more uniform and smaller nanoparticles.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:163:336128
Study programmeTitle: Pharmacy
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: magistar/magistra farmacije (magistar/magistra farmacije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2021-05-03 07:42:42