July 2011
Pakistan Journal of Pharmaceutical Sciences;Jul2011, Vol. 24 Issue 3, p345
Academic Journal
Sea buckthorn berries are therapeutically used as folk medicine for a variety of diseases, however, the scientific evidence is hardly available to support their role. This study explored their chemical constituents and their role as antioxidant and antibacterial agents. Three common solvents such as petroleum ether (40° - 60°C), chloroform and methanol were successively used for the extraction of active principles from sea buckthorn berries. Five major fractions (F1-F5) were isolated from the active methanol extract by column and thin layer chromatography. An attempt was made to identify the chemical nature of pooled fractions by available spectral means. Antioxidant potential of methanol extract and its fractions was measured by DPPH, formation of phosphomolybdenum complex and TBA methods. The hole-plate diffussion method was used to find out the antibacterial activity. A very brief structure-activity relationship of the potent antioxidant and antimicrobial compounds is discussed. Methanolic extract and its fractions contain numerous phenolic compounds such as flavonoids, which may be responsible for antioxidant and antibacterial effects.


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