Valagro Carbone Renouvelable Poitou-Charentes

Stephane Soum

Frederic Bataille

Antoine Piccirilli

Jacques Barbier

Alexandre Briand

A method for obtaining polyphenols from a vegetable raw material containing same, includes at least the following steps: optionally drying the raw material containing the polyphenols; crushing the raw material; defibrating the crushed raw material in an extruder in the presence of a solvent; separating the soluble phase from the fibers; and recovering the soluble phase, crude extract, containing the polyphenols.

Method for obtaining polyphenols from a vegetable raw material containing same

A process for producing from a lignocellulosic raw material of (i) an intermediate product that is intended for the production of ethanol, containing polysaccharides, cellulose and hemicelluloses, and (ii) a product containing lignin in an aqueous solution without sulfur residue, this lignin could be precipitated. The process includes a step of pulping the raw material in an extruder at a temperature of between 60&#xb0; C. and 180&#xb0; C. and in the presence of a quantity of water that represents between 200% and 450% of the mass of said raw material and in the presence of a strong base at a concentration of between 0.5% and 4% relative to the volume of water.

Growing community of inventors

Migne-Auxances, France

Stephane Soum