The purpose of this work was to evaluate the chemical composition of two floating aquatic macrophytes (Eichhornia crassipes and Pistia stratiotes) used in the treatment of aquaculture wastewater and to infer their potential use as biomass. E. crassipes showed the highest contents of calcium (1.51%), magnesium (3,916.67 mg kg-1), manganese (1,233.33 mg kg¹), zinc (81.83 mg kg-1), iron (5,425.00 mg kg-1) and copper (25.83 mg kg-1). P. stratiotes showed the highest contents of ash (18.95%), phosphorus (0.38%), nitrogen (2.40%), crude protein (15.02%) and amino acids, except for aspartic acid and tryptophan.
nutritive value; Eichhornia crassipes; Pistia stratiotes; nutrients; amino acids
