In the present experiment, tannin was leached from the bark of EC using water
as solvent. Tannin produced varied from 5 to 12%. The yield obtained was found to
vary inversely with the particle size of the bark. Better yields were obtained if distilled
water and agitation method were used in comparison with tap water and soaking
method. However, the increase in yield was not statistically significant. Method of
solvent removal and doubling the amount of solvent used has little or no effect on yield.