Tannin Extract Of Guava Leaves Psidium Guajava L Variation With Concentration Organic Solvents

Abstract Research has been conducted to determine the levels of tannins in leaves of guava Psidium guajava L using a variation of the concentration of organic solvent. The method used for qualitative analysis with the tannins are formed by the intensity of the color is blackish green FeCl3 compounds. While the principle of quantitative determination of tannins is tanat acid standard curve at a wavelength of 7245 nm. In the quantitative analysis of tannins used variations of organic solvent ethanol and acetone with a concentration of 30 50 70. Levels of tannins in the sample solution was calculated with Tannates Acid Equivalent EAT. The results showed levels of tannins in leaves of guava with 30 ethanol which is 3.228 mgg 50 is 2.970 mgg 70 is 2333 mgg. While the levels of tannins in guava leaves with 30 acetone solvent which is 2781 mgg 50 2738 mgg 70 2405 mgg.