RT Journal Article
T1 Determining the Potential of Haematococcus pluvialis Oleoresin as a Rich Source of Antioxidants
A1 Ruiz Domínguez, María del Carmen
A1 Espinosa, Carolina
A1 Paredes, Adrián
A1 Palma, Jenifer
A1 Jaime, Carolina
A1 Vílchez Lobato, Carlos
A1 Cerezal, Pedro
A1 Ruiz Domínguez, María del Carmen
AB Haematococcus pluvialis is known to be a natural source of antioxidants for numerousapplications. In this study, an oleoresin rich in carotenoids extracted by supercritical CO2 treatmentof H. pluvialis was extensively characterized for its antioxidant capacity. Carotenoid content, fattyacid profile, total phenol content, antioxidant capacity, and viscosity of the oleoresin were determinedwith the aim of ascertaining the potential of the oleoresin in terms of its antioxidant content for foodapplications. The oleoresin contained 96.22 mg/g of total astaxanthin (which includes free astaxanthinand astaxanthin esters) and mostly included unsaturated fatty acids (~78% of total fatty acids). Hightotal phenol content and ferric reducing antioxidant potential indicated high antioxidant capacity,but oxygen radical absorbance capacity was lower compared to the oleoresin samples obtained fromother species. The oleoresin was a non-Newtonian fluid since it had shear-thinning (pseudoplastic)and shear-thickening (dilatant) flow. Therefore, the H. pluvialis oleoresin is a potential alternative indeveloping functional ingredients for designing healthy food products. To the best of our knowledge,this is the first study that has reported an extensive characterization of the antioxidant properties of amicroalgal oleoresin obtained by means of supercritical CO2 fluid extraction.
PB MDPI
SN 1420-3049
YR 2019
FD 2019-11
LK http://hdl.handle.net/10272/17694
UL http://hdl.handle.net/10272/17694
LA eng
NO Ruiz Domínguez, M. C., Espinosa, C., Paredes, A., Palma, J., Jaime, C., Vílchez Lobato, C.,  Cerezal, P. (2019). Determining the Potential of Haematococcus pluvialis Oleoresin as a Rich Source of Antioxidants. Molecules, 24(22), 4073. DOI: https://doi.org/10.3390/molecules24224073
NO This research was financed by two projects with public funds of Chile,  grants PAI-79160037 andVIU-FONDEF 15E0082 (CONICYT, Chile).
DS Repositorio Institucional de la Universidad de Huelva
RD 2 jun 2026