摘要:
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.
摘要:
A method for extracting an unsaponifiable fraction from a solid renewable raw material, includes the solid-liquid extraction of the fats from the solid renewable raw material in the presence of at least one polar organic solvent and at least one non-polar cosolvent immiscible with the polar organic solvent, resulting in the formation of a polar organic phase enriched in lipids functionalized with one or more function(s) chosen from hydroxyl, epoxide, ketone, thiol, aldehyde, ether and amine functions, and of a non-polar organic phase enriched in lipids containing no or few hydroxyl, epoxide, ketone, thiol, aldehyde, ether and amine function(s), then the concentration of the organic phases.
摘要:
A method for extracting an unsaponifiable fraction from a solid renewable raw material, includes the extraction of the fats from the solid renewable raw material, leading to the production of an oil, the concentration of the oil so as to obtain a mixture enriched in unsaponifiable fraction, and the liquid-liquid extraction of the mixture enriched in unsaponifiable fraction, in the presence of at least one polar organic solvent and at least one non-polar cosolvent immiscible with the polar organic solvent, resulting in the formation of an organic polar phase enriched in lipids functionalized with one or more function(s) chosen from hydroxyl, epoxide, ketone, thiol, aldehyde, ether and amine functions, and to the formation of a non-polar organic phase enriched in lipids containing no or few hydroxyl, epoxide, ketone, thiol, aldehyde, ether and amine function(s), then the concentration of the organic phases.
摘要:
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° C. and 180° 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.
摘要:
The present invention relates to a process for preparing a polymer/biological entities alloy, comprising a step of mixing a polymer and biological entities that degrade it, during a heat treatment, said heat treatment being performed at a temperature T above room temperature and said biological entities being resistant to said temperature T, characterized in that said biological entities are chosen from enzymes that degrade said polymer and microorganisms that degrade said polymer.
摘要:
A method for extracting an unsaponifiable fraction from a renewable raw material, includes the reactive trituration of the raw material dehydrated in the presence of at least one polar organic solvent including at least one light alcohol, at least one non-polar cosolvent immiscible with the light alcohol and at least one catalyst, resulting in the formation of a polar organic phase enriched with lipids functionalized with one or more function(s) chosen from hydroxyl, epoxide, ketone, thiol, aldehyde, ether and amine functions, and of a non-polar organic phase enriched with lipids containing no or few hydroxyl, epoxide, ketone, thiol, aldehyde, ether and amine function(s), and thereafter the concentration of the organic phases.
摘要:
The present invention relates to a process for preparing a polymer/biological entities alloy, comprising a step of mixing a polymer and biological entities that degrade it, during a heat treatment, said heat treatment being performed at a temperature T above room temperature and said biological entities being resistant to said temperature T, characterized in that said biological entities are chosen from enzymes that degrade said polymer and microorganisms that degrade said polymer.
摘要:
The present invention relates to a process for preparing a polymer/biological entities alloy, comprising a step of mixing a polymer and biological entities that degrade it, during a heat treatment, said heat treatment being performed at a temperature T above room temperature and said biological entities being resistant to said temperature T, characterized in that said biological entities are chosen from enzymes that degrade said polymer and microorganisms that degrade said polymer.
摘要:
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 fibres; and recovering the soluble phase, crude extract, containing the polyphenols.
摘要:
The present invention relates to a process for preparing a polymer/biological entities alloy, comprising a step of mixing a polymer and biological entities that degrade it, during a heat treatment, said heat treatment being performed at a temperature T above room temperature and said biological entities being resistant to said temperature T, characterized in that said biological entities are chosen from enzymes that degrade said polymer and microorganisms that degrade said polymer.