Naslov
Natural antioxidants from brown seaweeds for a sustainable cosmetic

Autori
Martić, Ana ; Čižmek, Lara ; Babić, Sanja ; Čož-Rakovac, Rozelindra ; Trebše, Polonca

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Chem2Change, Environmental Chemistry towards Global Change, 2nd Online ACE Seminar on Chemistry and the Environment Led by Early-Career Scientists : Book of Abstracts / Niemi, Lydia ; Pap, Szabolcs ; Prosenc, Franja ; Šunta, Urška ; Mišíková, Frederika ; Krejčová, Anna ; Tykva, Marek ; Gajica, Gordana ; Savić, Slađana - Pardubice : University of Pardubice, 2022, 46-46

ISBN
978-80-7560-406-4

Skup
2nd Online ACE Seminar on Chemistry and the Environment Environmental Chemistry towards Global Change (Chem2Change 2022)

Mjesto i datum
Online, 15.03.2022. - 16.03.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
Macroalgae ; Bioactivity ; Toxicity ; Proteins ; Pigments

Sažetak
Brown macroalgae have recently been in the focus of many researches due to their composition and the accumulation of specific metabolites with great antioxidant potential. Food, cosmetics, and pharmaceutical industries are constantly working to find natural, non-toxic compounds that can be used in their products. In this study, we evaluated the antioxidant activity of two (methanolic and dichloromethane) different fractions from three brown macroalgae, Dichtyota dichotoma, Dichtyota fasciola, and Halopteris scoparia. Several methods were used for the evaluation of antioxidant activity including the reduction of the radical cation (ABTS), the 2, 2-diphenyl-1-picryl-hydrazyl (DPPH), the Folin–Ciocalteu, and the oxygen radical absorbance capacity (ORAC) assays. Also, total protein content was determined by the Lowry method with slight modifications, while chlorophyll and carotenoid content were determined spectrophotometrically by the Lichtenthaler method. The toxicity of samples was determined using the zebrafish embryotoxicity test up to 96 h of embryonal development. All methanolic fractions showed higher antioxidant activity than the dichloromethane fractions, while H. scoparia methanolic fraction showed the highest activity (IC50 concentration of 1.947 mg/mL). The highest protein value was observed for Halopteris scoparia (20.7%) followed by Dichtyota dichotoma (7.4%) and Dichtyota fasciola (3.3%). Because of their good antioxidant potential, all three researched brown macroalgae have the potential to be used as a source of natural antioxidants in the cosmetic industry.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Biologija, Kemijsko inženjerstvo, Biotehnologija

POVEZANOST RADA