More than 300 species of Hibiscus Sabdariffa Linn. are present all over the world. Roselle is an annual herbaceous plant obtained from Hibiscus Sabdarifa Linn. Belonging to the family Malvaceae and Genus Hibiscus. It is also known as Aambadi in Marathi. Roselle is used for various medicinal purposes. Hibiscus Sabdariffa uses for making jellies, sauces, syrups, jams as well as use as a flavoring and colouring agent in drinks. the calyx is used as a beverage that helps to lower body temperature. Roselle is also used as a diuretic, laxative, anthelmintic. Also, use to lower blood pressure.15%-30% plant is made up of plant acids like citric acid, tartaric acid. Roselle mainly contains alkaloids, quercetin, L-ascorbic acid, anthocyanin, Beta-carotene. In this article, we focused on the antioxidant and antimicrobial activities of the rosella flower and we found that the alcoholic extract of the plant shows good antioxidant and antimicrobial activity as compared to the aqueous extract at very low concentration. The antioxidant activity was performed by using the DPPH and ferric thiocyanate activity model while the antimicrobial activity is done by using E.coli and S. aureus which shows a good result when they are evaluated.
Key words: Hibiscus Sabdariffa linn, Antimicrobial, Antioxidant, DPPH, E.Coli.
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