The present survey consisted in a first time, to make a biological assessment carrying on the potential antibacterial and analgesic activities of ethanolic decoctions from Schrankia leptocarpa, the whole plant (P) and its different organs: stem (T), roots (R), leaves (F), fruit, as well as stem-roots (TR), roots-leaves (RF), leaves-stem (FT) combinations. It revealed that all excerpts sign a bactericidal activity against 3 strains of Streptococcus mutans, with a MIC ranging from 6.25 mg/mL to 12.5 mg/mL. However, only the excerpt R exhibits a good analgesic activity. In the second time, a phytochemical screening of the excerpt R has been achieved on the basis of bio-guided tests, after which, the presence of various secondary metabolites (free quinones, saponosides, polyphenols, coumarins, flavonoids, gallic tannins, alkaloids) has been put in evidence.
The main objective of this study is to assess the level of contamination, in trace elements (cadmium, copper, zinc, lead, nickel), of amaranth and lettuce grown on the market gardens of Marcory and Cocody and on the experimental plot of the University Nangui Abrogoua in the city of Abidjan (Ivory Coast). On the 3 sites, each species accumulate metals differently. Concentrations of metals in plants are influenced by the level of their presence in soil and the atmospheric depositions. The leaves of lettuce accumulated more Zn than those of amaranth on the 3 sites. On all the sites, the leaves of both species are unfit for human consumption because having contained lead, zinc and nickel above the recommended norms.
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