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master's thesis
Simultana inkapsulacija srebrovih i cinkovih iona u biopolimerne mikročestice
Zagreb: University of Zagreb, Faculty of Agriculture, 2023. urn:nbn:hr:204:282377
Krčelić, Ana
University of Zagreb
Faculty of Agriculture
Chemistry

Institutional repository: Repository Faculty of Agriculture University of Zagreb

Cite this document

Krčelić, A. (2023). Simultana inkapsulacija srebrovih i cinkovih iona u biopolimerne mikročestice (Master's thesis). Zagreb: University of Zagreb, Faculty of Agriculture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:204:282377

Krčelić, Ana. "Simultana inkapsulacija srebrovih i cinkovih iona u biopolimerne mikročestice." Master's thesis, University of Zagreb, Faculty of Agriculture, 2023. https://urn.nsk.hr/urn:nbn:hr:204:282377

Krčelić, Ana. "Simultana inkapsulacija srebrovih i cinkovih iona u biopolimerne mikročestice." Master's thesis, University of Zagreb, Faculty of Agriculture, 2023. https://urn.nsk.hr/urn:nbn:hr:204:282377

Krčelić, A. (2023). 'Simultana inkapsulacija srebrovih i cinkovih iona u biopolimerne mikročestice', Master's thesis, University of Zagreb, Faculty of Agriculture, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:204:282377

Krčelić A. Simultana inkapsulacija srebrovih i cinkovih iona u biopolimerne mikročestice [Master's thesis]. Zagreb: University of Zagreb, Faculty of Agriculture; 2023 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:204:282377

A. Krčelić, "Simultana inkapsulacija srebrovih i cinkovih iona u biopolimerne mikročestice", Master's thesis, University of Zagreb, Faculty of Agriculture, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:204:282377

Metadata
TitleSimultana inkapsulacija srebrovih i cinkovih iona u biopolimerne mikročestice
Title (english)Simultaneous encapsulation of silver and zinc ions into biopolymer microparticles
AuthorAna Krčelić
MentorMarko Vinceković (mentor)
Committee memberMarko Vinceković (predsjednik povjerenstva)
Committee memberMirna Mrkonjić Fuka (član povjerenstva)
Committee memberLuna Maslov Bandić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Agriculture
(Chemistry)
Zagreb
Defense date and country2023-09-22, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Agronomy
Abstract
Jedan od najvećih problema u svjetskoj komercijalnoj proizvodnji usjeva i hrane su biljno patogeni bakterije i gljivice, što dramatično povećava troškove proizvodnje i smanjuje produktivnost. Upotreba inovativnih agroekoloških formulacija jedan je od ključnih koraka u zaštiti biljaka. Pripravljene su nove formulacije alginatnih mikročestica i mikrokapsula s Zn2+ ili istovremeno s Zn2+ i Ag+ i karakterizirane (veličina i morfologija mikročestica, učinkovitost inkapsulacije, kapacitet inkapsulacije i bubrenje). Istraživanje molekulskih interakcija pomoću FTIR spektroskopije otkrilo je složene interakcije između svih konstituenata mikročestica. Karakteristike cinkovih i srebrovih kationa nisu nepovoljno utjecale na inkapsulaciju u mikročesticama biopolimera, a njihova aktivnost ostala je prilično visoka. In vitro profili otpuštanja cinkovih i srebrovih kationa analizirani su pomoću Korsmeyer- Peppas empirijskog modela. Vrlo niske vrijednosti eksponenta n ukazale su da je Fickova difuzija mehanizam koji kontrolira otpuštanje cinkovih i srebrovih iona. Niže vrijednosti konstante otpuštanja k za mikrokapsule ukazuju na sporiju brzinu otpuštanja cinkovih i srebrovih kationa u usporedbi s mikrosferama. Rezultati su pokazali da se pripravljene mikročestice mogu potencijalno koristiti u zaštiti i prihrani biljaka.
Abstract (english)
One of the biggest problems to the world's commercial crop and food production are plant pathogenic bacteria and fungi, which raises production costs dramatically and reduces crop productivity. The use of innovative agroecological formulations is one of the most critical steps in plant protection. Novel alginate microparticles (microspheres and microcapsules) loaded with Zn2+ or simultaneously with Zn2+ and Ag+ were prepared and characterized (microparticle size and surface morphology, encapsulation efficiency, loading capacity, swelling). Investigation of molecular interactions in microparticles using FTIR spectroscopy revealed complex interactions between all constituents. The zinc and silver cations characteristics were not adversely affected by the encapsulation in biopolymer microparticles, and their activity remained quite high. The in vitro release profiles of Zn2+ and Ag+ ions were nalayzed by Korsmeyer–Peppas empirical model. Very low values of the exponent n revealed Fickian diffusion was ratecontrolling mechanism for both cations, Zn2+ and Ag+. Lower values of the release constant k for microcapsules imply a slower release of Zn2+ or Ag+ ions than from microspheres. The outcomes demonstrated that prepared microparticles can potentially be used in plant protection and nutrition.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:204:282377
Study programmeTitle: Agroecology
Study programme type: university
Study level: graduate
Academic / professional title: magistar/ magistra inženjer/inženjerka agroekologije (magistar/ magistra inženjer/inženjerka agroekologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2023-11-15 08:03:33