PROCESS FOR OBTAINING ELLAGITANNINS FROM THE PUNICAGRANATUM PEEL AND USES THEREOF.

摘要

Described is the process for extracting, recovering and purifying ellagitannins from the pomegranate peel by means of water, ethanol and a separation resin. The water acts as an extractor agent, since the ellagitannins present in the pomegranate peel are water soluble, the ethanol allowing the ellagitannins to be recovered after performing a column chromatography of liquids, which is filled with resin. The process starts with the dehydration and mill of the pomegranate peels, these are dehydrated at 60°C for 48 hours and their particles are reduced; the extraction is performed in a mass/volume ratio of 1:5 (1 part of dehydrated and milled material by 5 parts of water) at a temperature of 60°C for 30 minutes, the extract being filtrated for obtaining the aqueous part, which is centrifuged at 3000 rpm for 15 minutes. A column with the resin is packed and the non-desired material is removed, a second elution with ethanol is prepared for recovering the ellagitannin fraction separated by t he resin action. The residual ethanol is subsequently evaporated at a temperature of 60°C for recovering the ellagitannins in the form of a fine powder.