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The objective of this review is to document briefly about the chemical constituents, pharmacognostical evaluation and biological activities of Syzygium samarangense belongs to the family Myrtaceae. It is generally called Java Apple, Wax Apple, Blume, Chambekka etc. Syzygium samarangense traditionally used as an astringent. It is also used to treat fever and halt diarrhea. The whole plant contains flavonoids, terpenoids, tannins, phenolic compounds, gallic acid, ellagic acid, squalene, botulin, lupeol, sitosterol, mixture of cycloartenol stearate, lupenyl stearate, β-sitosterol stearate, vitamins and minerals which bearing anti-oxidant, anti- microbial, hypoglycemic, anti-inflammatory, Immunomodulatory, CNS, Anti- diarrheal, anthelmintic and cytotoxic activities. In this review, different parts of the plant, their phytochemical constituents and their corresponding biological activities have been explored. The literatures reported that the fruit part contains carotene, anthocyanin and vescalagin which is used as antioxidant, anti- microbial and hypoglycemic effect. The leaf part contains myricetin, strobopinine, epigallocatechin, aurentiacin which bearing anti-inflammatory and immunomodulatory effect. The alcoholic extracts of leaves, seeds, root bearing analgesic, anti- inflammatory effect in lipopolysaccharide, antioxidant, cytotoxic activity against human colon cancer cell, the studies revealed that the extracts showed a potent anti- microbial activity against salmonella typhi, Escherichia coli, pseudomonas aeruginosa, bacillus subtilis, candida albicans etc. The aqueous extract of fruit prevents diabetes mellitus in rats.
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