Résumé:
Cypress is considered one of the most popular plants thanks to the different properties it
has (medicinal, pharmacological and cosmetological properties).And to look the exemplary
active components ,we did a test on the cypress plant which was harvested from the eastern
region of Algeria- in the region of faculty of Guelma in the month of March 2022. Several
extracts from the leaves of this plant have been prepared (aqueous, ethanolic and methanolic
extracts) to be tested on Gram-positive (S.aureus) and Gram-negative (E.coli and P.
aeruginosa) strains. Only the extracts have antibacterial activity, despite the fact that they
consist of several active ingredients with antibacterial potential such as Tannins and Alkaloids
of Flavonoids, Coumarins, Sterols and Treterpenes, Compound-reducers.
