Biological activities (antioxidant and antimicrobial activity) of the aqueous extracts and essential oil of Ammoides verticillata (Nounkha)

Abstract

The phytochemical review conducted on the aerial part Ammoides verticillata has revealed the presence of six chemical families: flavonoids, tannins; gallic tannins, anthocyanins and the coumarins, cateichic tannins. The aqueous extract of the Ammoides verticillata could bring back the stable free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) to the yellow-colored diphenylpicrylhydrazine with an IC50 of 0.020 mg.mL-1. It is gifted with antioxidant activity, however it was less effective than vitamin C (0.001 mL-1). The essential oil of the Ammoides verticillata has presented a strong antimicrobial activity against Gram negatif germs targets of original clinical action: E. coli (ESBL) (37 mm), E. coli (39.5 mm), Klebsiella pneumoniae (36.5 mm) and especially with the yeast: Candida albicans ATCC 10231 (47 mm) and Saccharomyces cerevisie ATCC (42 mm), which are highly sensitive to the oil inhibitory action. However, the oil has presented a low activity against the bacteria P. aeruginosa (12.5 mm).

Phytochemical Screening and Evaluation of the Antiarthritic PotentialofAmmoides pusillaAqueous Extract on Freund's Adjuvant-Induced Rheumatoid Arthritis

“…These results were also in agreement with those reported by the work of Felidj et al 27 and Benaissa, 28 which confirmed the presence of tannins, flavonoids and triterpenes. These results were confirmed by the work of Mohamed Said and Benmansour 29 and Hafiane and Ounnas 30 where they recorded the presence of 06 chemical groups: flavonoids, tannins, gallic tannins, catechin tannins, anthocyanins and coumarins. It has already been noted that this plant contained a large amount of tannins.…”