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master's thesis
Biološki potencijal odabrnih crvenih algi
diplomski rad
2021. urn:nbn:hr:167:213038
Nikolov, Nikolina
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Nikolov, N. (2021). Biološki potencijal odabrnih crvenih algi : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:213038

Nikolov, Nikolina. "Biološki potencijal odabrnih crvenih algi : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:213038

Nikolov, Nikolina. "Biološki potencijal odabrnih crvenih algi : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:213038

Nikolov, N. (2021). 'Biološki potencijal odabrnih crvenih algi : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 18 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:213038

Nikolov N. Biološki potencijal odabrnih crvenih algi : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2021 [cited 2024 November 18] Available at: https://urn.nsk.hr/urn:nbn:hr:167:213038

N. Nikolov, "Biološki potencijal odabrnih crvenih algi : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:167:213038

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Metadata
TitleBiološki potencijal odabrnih crvenih algi : diplomski rad
Title (english)Biological potential of selected red algae : diploma thesis
AuthorNikolina Nikolov
MentorVida Šimat (mentor)
Committee memberDanijela Skroza (predsjednik povjerenstva)
Committee memberIvana Generalić Mekinić (član povjerenstva)
Committee memberVida Šimat (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2021-10-25, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract
Crvene alge (Rhodophyta) su široko rasprostranjena grupa jednostaničnih i višestaničnih vodenih fotoautotrofnih organizama. Odličan su izvor bioaktivnih komponenti kao što su vitamini, minerali, vlakna i polisaharidi. Upravo njihov sastav ih čini odličnim izvorom antioksidansa. U ovom radu određen je sadržaj ukupnih fenola Folin-Ciocalteu metodom te antioksidacijski potencijal tri vrste crvenih algi (Laurencia obtusa, Corallina officinalis i Peyssonnelia squamaria) iz Jadranskog mora, korištenjem DPPH (eng. 2,2,- Diphenyl-picrylhydrazyl assay), FRAP (eng. Ferric-reducing antioxidant power) i ORAC (eng. Oxygen radical absorbing capacity) metoda. Dodatno, određen je i utjecaj dviju ekstrakcija, ekstrakcije potpomognute ultrazvukom (UAE) i ekstrakcije potpomognute mikrovalovima (MAE) na ukupan broj fenola. Iz rezultata se može zaključiti da od tri ispitivane vrste alga P. squamaria ima najbolji antioksidacijski potencijal, a MAE se pokazala kao bolja metoda za ekstrakciju jer omogućava ekstrahiranje veće količine fenola, a time i veću antioksidacijsku aktivnost odabranih crvenih algi.
Abstract (english)
Red algae (Rhodophyta) are a widespread group of unicellular and multicellular aquatic photoautotrophic organisms. They are an excellent source of bioactive components such as vitamins, minerals, fiber and polysaccharides. It is their composition that makes them an excellent source of antioxidants. In this paper, the content of total phenols via Folin-Ciocalteu method and the antioxidant potential of three species of red algae from Adriatic (Laurencia obtusa, Corallina officinalis and Peyssonnelia squamaria) were determined using DPPH (2.2, -Diphenyl-picrylhydrazyl assay), FRAP (Ferric-reducing antioxidant power) and ORAC (Oxygen radical absorbing capacity) methods. In addition, the influence of two extractions, ultrasound-assisted extraction (UAE) and microwave-assisted extraction (MAE) on the total phenolics was determined. From the results it can be concluded that of the three tested algae species P. squamaria had the best antioxidant potential, and MAE proved to be a better method for extraction because it allows extraction of higher amounts of phenols, and thus higher antioxidant activity of selected red algae.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:213038
Study programmeTitle: Food technology - graduate - university
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjerka prehrambene tehnologije (magistar/magistra inženjerka prehrambene tehnologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2022-01-14 09:45:39