antioxidants Article Analysis of Carotenoids in Haloarchaea Species from Atacama Saline Lakes by High Resolution UHPLC-Q-Orbitrap-Mass Spectrometry: Antioxidant Potential and Biological Effect on Cell Viability Catherine Lizama 1, Javier Romero-Parra 2, Daniel Andrade 1, Felipe Riveros 1 , Jorge Bórquez 3 , Shakeel Ahmed 4 , Luis Venegas-Salas 5, Carolina Cabalín 5 and Mario J. Simirgiotis 4,* 1 Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta 1240000, Chile;
[email protected] (C.L.);
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[email protected] (F.R.) 2 Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Olivos 1007, Casilla 233, Santiago 6640022, Chile;
[email protected] 3 Departamento de Química, Facultad de Ciencias Básicas, Universidad de Antofagasta, Antofagasta 1240000, Chile;
[email protected] 4 Facultad de Ciencias, Instituto de Farmacia, Universidad Austral de Chile, Valdivia 5090000, Chile;
[email protected] 5 Departamento de Enfermedades Infecciosas e Inmunología Pediátrica, Escuela de Medicina, Pontificia Citation: Lizama, C.; Romero-Parra, Universidad Católica de Chile, Santiago 8320000, Chile;
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[email protected] (C.C.) J.; Andrade, D.; Riveros, F.; Bórquez, * Correspondence:
[email protected]; Tel.: +56-999-835-427 J.; Ahmed, S.; Venegas-Salas, L.; Cabalín, C.; Simirgiotis, M.J.. Abstract: Haloarchaea are extreme halophilic microorganisms belonging to the domain Archaea, Analysis of Carotenoids in phylum Euryarchaeota, and are producers of interesting antioxidant carotenoid compounds. In this Haloarchaea Species from Atacama study, four new strains of Haloarcula sp., isolated from saline lakes of the Atacama Desert, are reported Saline Lakes by High Resolution and studied by high-resolution mass spectrometry (UHPLC-Q-Orbitrap-MS/MS) for the first time.