We report here the effects of cadmium on metabolome macroalga Gracilaria caudata. The IC50 3 mg/L (12 µM) was obtained after 48 hrs exposure and induced lower photosynthesis efficiency. Threshold concentrations determined by Brazilian Environmental Council (CONAMA) in marine waters (0.04 mg/L) effluent discharge (0.2 were also tested, latter changed photosynthetic efficiency similarly to IC50. ...

Seaweeds are an important source of bioactive metabolites for the pharmaceutical industry in drug development. Many of these compounds are used to treat diseases like cancer, acquired immune-deficiency syndrome (AIDS), inflammation, pain, arthritis, as well as viral, bacterial, and fungal infections. This paper offers a survey of the literature for Gracilaria algae extracts with biological acti...