"Biofiltration of fish factory effluent with marine microalgae and agronomic use of the resulting biomass (biostimulants and compost)ā
To evaluate the ability of new marine macroalgae clones to filter fish factory effluent and the use of the resulting biomass to:
1. Extract, test and evaluate biological substances that stimulate the growth of vegetables and fruits.
2. Extract and evaluate substances of pharmaceutical interest: photoprotectors and antioxidants.
3. Evaluate their use as dietary supplements in vegetable feed for fish (Sparus aurata) given their nutritional value and immunostimulative capacity.
The project is divided into three sub-projects with the following specific objectives:
1. Integrated polyaquaculture of algae and fish on small and large scales. Use of the resulting algae to biostimulate land vegetation.
*Determine the biofiltering capacity of new high-value macroalgae clones not yet analyzed: Cystoseira abies-marina, Gracilariopsis, Laurencia , Monostroma, Hypnea musciformis, H. cervicornis and Poprhyra in addition to those already in use: Ulva, Enteromorpha and Gracilaria .
* Minimize the environmental impact of fish factories: evaluate the quality of wastewater from fish factories containing clones with a high biofiltering capacity.
* Evaluate the agricultural use of biomass from microalgae.
2. Evaluate the physiological state and biomass quality of the algae. Extract/assess products of pharmaceutical interest.
* Develop protocols to determine and predict the physiological state and stress of algae used to monitor aquaculture.
*Applied photobiology: Evaluate the control of the build-up of substances of pharmaceutical interest (photoprotectors and antioxidants) in algae by light (ultraviolet ā photosynthetic) and nutrients in algae grown in fish factory effluent.
*Extract and evaluate the concentration and composition of photoprotective substances and antioxidants in algae grown in fish factory effluent with high ammonium levels.
3. Evaluate the use of algae biomass to complement fish diets (vegetable feed)
*Assess the nutritional quality of the macroalgae grown in fish factory effluent: proteins, fatty acids and growth factors.
*Immunostimulants: Evaluate the immune response in Sparus aurata populations whose diet is supplemented with macroalgae extract.