Bioactive Compound Profiling and Nutritional Composition of Three Species from the Amaranthaceae Family

In this work, the chemical and nutritional composition of three Amaranthaceae species (Alternanthera sessilis, Dicliptera chinensis, and Dysphania ambrosioides) was studied. The results showed a differential flavonoid content in the three species: A. sessilis and D. ambrosioides showed similar flavonoid contents (15.1 ± 0.6 and 15.1 ± 0.1 mg/g extract, respectively), followed by D. chinensis (11.4 ± 0.1 mg/g extract). On the other hand, the nutritional results showed a high protein content in all species (16.9–13.9 ± 0.1 g/100 g dw) and revealed the presence of organic acids, such as oxalic and succinic acid. Therefore, bioactive compounds, together with protein and organic acids, could be of great value to the food industry.