Patent ID: 6478966
Filing Date: 2002-11-12
Classification: B01D,B01J

Abstract:
A system for extracting compounds from biological tissues comprising:a) a lixiviating and filtering apparatus, comprising a sealing head at the top, a lixiviating barrel in the middle and a decompressing chamber at the bottom, wherein the sealing head comprises a gas inlet valve connecting to a pressurizing source and a degassing valve, and the decompressing chamber comprises a connection to a vacuum source; wherein a filtering material compatible with stainless steel components and capable of sustaining a pressure differential of from 0.5-6.0 kg per square centimeter, without rupturing is mounted between the decompressing chamber and the lixiviator barrel; b) a heater that is fitted to the lixiviating and filtering apparatus or is alternatively a separate heated vessel connected to the decompressing chamber of the lixiviating and filtering apparatus; c) a second filtration apparatus connected to an outflow from the lixiviating and filtering apparatus or alternatively to the outflow of the separately heated vessel; d) a cation exchange column connected to the outflow of the second filtration apparatus; e) a diatomaceous silica-active carbon column connected to the outflow of the cation exchange column and comprising two layers, an upper layer of diatomaceous silica and a lower layer of active charcoal; f) an apparatus for vacuum evaporation of a solvent connected to the outflow of the diatomaceous silica-active carbon column.