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Method of producing an oil extract from seeds of plants via a binary azeotropic solvent mixture

  • US 7,615,657 B2
  • Filed: 01/28/2003
  • Issued: 11/10/2009
  • Est. Priority Date: 01/28/2002
  • Status: Active Grant
First Claim
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1. A method of producing an oil extract from seeds of plants selected from the group including:

  • meadowfoam;

    brassicas;

    crambe;

    said method including the steps of;

    (a) washing the seed with a solvent, whereby oil from the seed is dissolved in the solvent;

    (b) separating a spent seed solvent solution, wherein the spent seed solvent solution is a binary azeotropic mixture of aliphatic solvents and alcohols;

    (c) distilling the spent seed solvent solution at a temperature of equal to or less than 120°

    C., and a pressure equal to or less than 50 kPa to obtain an oil extract from the spent seed solvent solution; and

    (d) deodorising the oil extract to remove any adverse odours in the oil extract,wherein the oil extract produced contains a glucosinolates (GSL).

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