Circular Approach for the Sustainable Valorization of IMTA Codium sp. for Multitarget Skincare Applications

This study investigates the sustainable use of Codium sp., a green seaweed cultivated in an Integrated Multi-Trophic Aquaculture (IMTA) system, for skincare applications and biochar production. The seaweed was processed into five fractions, each tested for various bioactivities. Fraction F1 showed significant photoprotective effects, while F3 and F5 demonstrated strong wound-healing potential. Fractions F2 and F3 exhibited high antimicrobial activity against Cutibacterium acnes. The study suggests that targeted formulations using specific fractions could be more effective than using the whole extract. Additionally, the post-extraction biomass was converted into biochar, suitable for activated carbon and biomaterial applications, supporting a circular bioeconomy. Further research, including life cycle assessments and clinical testing, is recommended to validate these findings.