In-Depth Characterization of Bioactive Extracts from Posidonia oceanica Waste Biomass Benito González, Isaac Lozano Sánchez, Jesús Borras Linares, María Isabel Segura Carretero, Antonio Valorisation Antivirales Antifungal activity Antioxidant capacity Ultrasound Hot water extraction Posidonia oceanica waste biomass has been valorised to produce extracts by means of different methodologies and their bioactive properties have been evaluated. Water-based extracts were produced using ultrasound-assisted and hot water methods and classified according to their ethanol-affinity (E1: ethanol soluble; E2: non-soluble). Moreover, a conventional protocol with organic solvents was applied, yielding E3 extracts. Compositional and structural characterization confirmed that while E1 and E3 extracts were mainly composed of minerals and lipids, respectively, E2 extracts were a mixture of minerals, proteins and carbohydrates. All the extracts showed remarkably high antioxidant capacity, which was not only related to phenolic compounds but also to the presence of proteins and polysaccharides. All E2 and E3 extracts inhibited the growth of several foodborne fungi, while only E3 extracts decreased substantially the infectivity of feline calicivirus and murine norovirus. These results show the potential of P. oceanica waste biomass for the production of bioactive extracts. 2020-03-09T12:10:06Z 2020-03-09T12:10:06Z 2019-07-09 info:eu-repo/semantics/article Benito-González, I., López-Rubio, A., Martínez-Abad, A., Ballester, A. R., Falcó, I., González-Candelas, L., ... & Martínez-Sanz, M. (2019). In-Depth Characterization of Bioactive Extracts from Posidonia oceanica Waste Biomass. Marine drugs, 17(7), 409. http://hdl.handle.net/10481/60138 10.3390/md17070409 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España MDPI