Penetapan Kadar Tanin Dalam Infusa Daun Salam (Syzygium Polyanthum (Wight.) Walp)) Secara Spektrofotometri Sinar Tampak

People used many traditional medicinal plants. One of them is leaf of salam (Syzygium polyanthum (Wight.) Walp). One of its active compound is tannin that used to treat diarrhoae. The aim of this research was to determine tannin content of salam leaves from different age. Sample that used in this research were young and old salam leaves. Infundation method was used to extract tannin from salam leaves. Tannin content of the infusion was determined by ultraviole-visible spectrophotometry with addition of Folin Denis reagent. Maximum wavelength was 745.0 nm. The result of tannin content in young and old salam leaves were 0.036±1.513% and 7.07x10-3±0.288% respectively. t test showed that there were differences of tannin content in young and old salam leaves. Keywords: tannin, salam leaf, infusion, ultraviolet-visible spectrophotometr