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All Journal Journal of Bioresources and Environmental Sciences
Urimubenshi, Jean Damascene
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Earth & Planetary Sciences Environmental Science

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Phytochemical screening and in vitro antimicrobial activity of Rosmarinus officinalis leaves Nsanzamahoro, Christophe; Gatozi, Emmanuel; Urimubenshi, Jean Damascene; Ntaganda, Jean
Journal of Bioresources and Environmental Sciences Vol 3, No 3 (2024): December 2024
Publisher : BIORE Scientia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/jbes.2024.19934

Abstract

Rosmarinus officinalis is a medicinal plant, which belongs to family Lamiaceae. It is an evergreen bush. It was analyzed for its phytochemical constitution and antibacterial activity. For this purpose, leaves of n-hexane, ethyl acetate and methanolic extracts were used. The tests of phytochemical screening showed that the plant leaves contain anthraquinones, terpenoids, flavonoids, reducing sugars, saponins, cardiac glycosides, coumarins, phenols, carbohydrates, proteins, steroids, alkaloids and quinones, while tannin was absent. The antibacterial activity was determined against E. coli and staphylococcus aureus; the invitro antibacterial activity was performed by disc diffusion method. The n-hexane and ethyl acetate extracts showed no antibacterial activity against E. coli while ethyl acetate extracts showed antibacterial activity against Staphylococcus sp. The results showed that the highest mean inhibition zone was observed in the methanolic extracts.
Co-Authors Gatozi, Emmanuel Nsanzamahoro, Christophe Ntaganda, Jean