Valorization of side-streams from cephalopod processing industry: An insight of polar lipids devoted to healthy oils

Póster.-- 2nd edition of the Conference Lipids in the Ocean, from 5 to 7 of July 2021 onlineThe seafood processing industry is dealing with a big challenge as the current exploitation of the aquatic biomass is unsustainable. This is because up to 70% of the aquatic resources end up as side-streams, which, in best cases, are used for low-value purposes and, in worse ones, are wasted. Demonstrating that side-streams can be raw material of high-value products for human consumption and aimed to promote health could help facing the problem. Thus, our research is aimed to the valorization of side-streams from the cephalopod processing industry. These products can contain healthy oils since they have a high percentage of ω-3 PUFAs, mainly EPA and DHA, which have demonstrated to improve human health, specially through their cardiovascular benefits and role in the resolution of inflammation processes. Moreover, these PUFAs are mainly present in the form of ω-3 phospholipids in those oils, that result in higher biodisponibility than ω-3 PUFA in the form of triglycerides present in fish oil. To reach this achievement, side-streams (gonads and digestive glands) from different cephalopod species (octopus and squids) from processing industry were used as oil source products. Then, oils were extracted and concentrated by an optimized and scalable extraction process. Polar oils profiles were further characterized by HPTLC and the PUFAs composition of each oil were determined by GC/FID. Lipid profiles of each oil were analyzed and compared to other high-value marine polar oils, as krill oil, in terms of healthy potential, mainly antiinflammatory and antioxidant properties. Our investigation will contribute in the valorization of side-streams from cephalopod processing industry demonstrating that are an important and profitable source of high-value ω-3 PUFAs oils for human consumption, which will also assist in reducing the total amount of biological waste and make the exploitation of the aquatic biomass more sustainablePeer reviewe