DISTILASI VAKUM AMPAS JAHE SECARA KOHOBASI DAN DISTILASI UAP AIR (Ginger Waste Vaccum Distillation by Cohobation and Steam Distillation)

Abstract

Vacuum Distillation is a process of separation of two kompenen a very high boiling point, motede used is by lowering the surface pressure is lower than 1 atm in order to, avoid the occurrence of oxidation reactions of components will be separated for the double bond in the compound is not broken. Ginger pulp is already removed the water content, but still has a high volatile oil content. Usually as a waste in herbal medicine industry. Compared with fresh ginger which has 0.3% yield, ginger has a yield of pulp (0,5 to 1)%. The working principle vacuum destilation of this tool is based on the phenomenon of vacuum under 1 atm for lower boiling point solvent that contained ginger oil components are not damaged and the time required for distilled ginger oil faster. Solvents used were water. Water use is based on reason is more economical. The function of the solvent dissolves the oil component is contained ginger then evaporate along with water. After that the mixture between oil and water are separated using a separator funnel. The results of this research are ginger oil with chohobation distillation process has a good quality . It is seen from the density (0,886 gr/ml), refractive indeks (1,48), optic rotation (-29º), are located on ISO (International Standard Oil of Ginger) where %yield are 0,84%. Actually for ginger oil with steam distillation process has a quality that suitable with ISO where density (0,859 gr/ml), refractive indeks (1,47), optic rotation (-34º), and %yield are 0.75% with equation= -2.425x2 + 13.37x – 10.52 and R2 = 0.896. Keyword : vacuum distillation, ginger pulp, ginger oil