Soxhlet extraction was originally designed for the extraction of a lipid from a solid material. However, a Soxhlet extractor is not limited to the extraction of fats/lipids.
For the measurement of total fat in food and feed, fat bound to protein must be liberated by acid hydrolysis, prior to soxhlet extraction.
Gerhardt supply several systems for Soxhlet extraction and acid hydrolysis, fully automated Soxtherm and Hydrotherm or traditional heating systems.
The Gerhardt Soxtherm automates and speeds the extraction process and can evaporate and recover the solvent. By immersing the sample in hot solvent the extractable material is removed more quickly than the traditional method.
Available as two, four or six place systems, up to four units can be operated independently with software or a single programmable controller.
By immersing the sample in hot solvent the extractable material is removed more quickly than the traditional method.
The solvent is re-circulated to rinse the extractable material into the bottom of the beaker. Finally the solvent is removed by evaporation automatically and recovered for safe disposal or reuse.
The Soxtherm has proved to be a fast, efficient and safe method of Soxhlet extraction for many hundreds of laboratories all over the World.
Cooling water is only used when the system is in operation. Safety systems include beakers and hotplate behind glass door, cut outs for over-temperature hotplate, low water pressure and compressed air failure. The Soxtherm extraction system is spark proofed.
Soxtherm is controlled by either a Multistat controller or Soxtherm Manager software.
A short presentation video of Soxtherm is now available:
Traditional methods involve the digestion of food and feed with strong Hydrochloric acid, in beakers on a hotplate, in order to digest the protein and to free the bound lipids. After digestion the sample is filtered, washed, dried then extracted by Soxhlet.
The Gerhardt Hydrotherm fully automates this process whilst still conforming to international standards of analysis. After processing on the Hydrotherm the filter paper is removed, dried and can then be placed on a soxhlet system for final extraction of the fat.
A short presentation video of Hydrotherm is now available:
Traditional Soxhlet extraction systems EV 6 are supplied with either a 4 or 6 place hotplate, top moulds, air bath inserts and condenser supports. Soxhlet glass components can be ordered separately.
Gerhardt also supply a traditional Hydrolysis system HY 16 which is supplied with a powerful 6 place EV hotplate, beakers, condensers, condenser support rods, filter funnels and funnel support stand.