Fast electrochemical determination of potential antioxidant capacity of marine and freshwater microalgae (CROSBI ID 667015)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Vadlja, Denis ; Galić, Maja ; Čižmek, Lara ; Babić, Sanja ; Topić Popović, Natalija ; Strunjak- Perović, Ivančica ; Čož-Rakovac Rozelinda
engleski
Fast electrochemical determination of potential antioxidant capacity of marine and freshwater microalgae
Antioxidants are valuable molecules capable to inhibit possibly harmful oxidation, a chemical reaction whereby produced free radicals can damage cells and cause different diseases. To prevent cellular damage, marine and freshwater microalgae have developed antioxidant defence mechanisms and have attracted considerable attention as a promising source of natural antioxidants to replace synthetic antioxidants for food and chemical industry applications. The main goal of this study was to determine the difference in potential antioxidant capacities of marine algae Dunaliella tertiolecta and freshwater algae Chlorella vulgaris using fast electrochemical method named voltammetry of immobilized microparticles. This method allows determination of electroactive compounds in crystalline state without prior preparation of the sample. Aliquots of powdered dried algae were placed on a ceramic tile forming a spot of finely distributed material. Afterwards they were abrasively transferred to the surface of paraffin impregnated graphite electrode by rubbing the electrode rod with its lower circular surface on that spot of the sample. Measurements were preformed using cyclic and square-wave voltammetry in 0.1 M KNO3 on both tested samples with changing the experimental conditions (scan rate and frequency) for both techniques. In addition, changing the pH- value of electrolyte gave insight into to electrochemical mechanism of tested samples. For tested algae, different results were obtained which corresponds to their different antioxidant capacity
microalgae ; Dunaliella tertiolecta ; Chlorella vulgaris ; antioxidant capacity ; voltammetry of immobilized microparticles
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
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Podaci o prilogu
109-109.
2018.
objavljeno
Podaci o matičnoj publikaciji
9th International Congress of Food Technologists, Biotechnologists and Nutritionists : Book of Abstracts
Kovačević Ganić, Karin ; Dragović-Uzelac, Verica ; Balbino, Sandra
Zagreb: Hrvatsko društvo prehrambenih tehnologa, biotehnologa i nutricionista
978-953-99725-7-6
Podaci o skupu
9th International Congress of Food Technologists, Biotechnologists and Nutritionist
poster
03.10.2018-06.10.2018
Zagreb, Hrvatska