Obtaining a juice of fresh plants by thermomechanical treatment and cosmetic and therapeutic use thereof

Patent metadata

Field	Value
Publication number	US-2016243186-A1
Application number	US-201415022732-A
Country	US
Kind code	A1
Filing date	Sep 18, 2014
Priority date	Sep 18, 2013
Publication date	Aug 25, 2016
Grant date	—

Abstract

The present invention relates to a process for obtaining a juice of fresh plants, characterized in that said fresh plants, with the exclusion of the seeds only, are subjected to a thermomechanical treatment consisting in extruding the fresh plants in an extruder, combined with a heat treatment which makes it possible to inactivate the endogenous enzymes and to preserve the molecules of compounds of interest in the native form thereof, in the absence of solvent, followed by a juice recovery operation.

First claim

1 . A process to obtain a juice of fresh plants, characterized in that said fresh plants, with the exclusion of the sole seeds, are subjected to solvent-free thermomechanical treatment whereby fresh plants are extruded in an extruder, associated with heat treatment allowing inactivation of endogenous enzymes and preserving of the molecules of compounds of interest in their native form, followed by a juice recovery operation.

2 . The process according to claim 1 , characterized in that said heat treatment is conducted at temperatures between 60° C. and 300° C., preferably between 60° C. and 120° C.

3 . The process according to claim 1 , characterized in that the fresh plants subjected to thermomechanical treatment are formed by the above-ground parts and/or below-ground parts of fresh plants, frozen or unfrozen.

4 . The process according to claim 1 , characterized in that the fresh plants subjected to thermomechanical treatment are selected from among Avena sativa, Melilotus officinalis, Tropaeolum majus, Echinaceae sp., Urtica dioica, Plantago sp., Erigeron canadensis, Equisetum arvense, Calendula officinalis, Melissa officinalis, Physalis sp., Vaccinum macrocarpon, Sambucus nigra, Zingiber officinale; Curcuma sp; Betula sp., Mentha sp., Althaea sp., Poaceae, Asteraceae and/or Labieae.

5 . The process according to claim 1 , characterized in that the recovered juice is subjected to a subsequent clarification, filtration and/or stabilisation step.

6 . The process according to claim 1 , characterized in that the thermomechanical treatment is implemented in a twin-screw extruder.

7 . The process according to claim 6 , characterized in that the twin-screw extruder comprises a first co-rotating and co-penetrating twin-screw zone wherein trituration of said plants takes place.

8 . The process according to claim 6 , characterized in that the twin-screw extruder comprises a second twin-screw zone wherein solid/liquid separation takes place.

9 . The process according to claim 7 , characterized in that said first twin-screw zone is positioned on the fresh plant feed side of the extruder.

10 . The process according to claim 8 , characterized in that said second twin-screw zone is positioned on the outlet side of the extruder.

11 . The process according to claim 1 , characterized in that said extruder comprises at least one barrel and preferably several successive adjacent barrels.

12 . The process according to claim 11 , characterized in that the different barrels comprise temperature command and control means and heating and/or cooling means.

13 . The process according to claim 6 , characterized in that said twin-screw extruder comprises at least one filtering barrel.

14 . The process according to claim 12 , characterized in that the heating means are formed by a heating collar preferably arranged in the first zone.

15 . The process according to claim 8 , characterized in that feeding, conveying, mechanical shearing and thermomechanical treatment allowing trituration of the fresh plants and juice extraction take place in the first extruder zone, and in that the liquid/solid separating operation takes place in the second zone.

16 . The process according to claim 7 , characterized in that the first zone comprises several successive barrels the temperatures of which are regulated to obtain increasing temperature levels ranging from 60° C. to 120° C.

17 . The process according to claim 8 , characterized in that the second zone comprises at least one barrel brought to a temperature of between 30° C. and 120° C.

18 . Food, cosmetic and/or pharmaceutical compositions containing a juice of fresh plants in liquid form obtained by implementing the process according to claim 1 , or in paste or dry form such as resulting from an additional stabilisation operation.

19 . The compositions according to claim 18 , characterized in that they are prepared in a form suitable for topical administration.

20 . The compositions according to claim 18 , characterized in that they are prepared in a form suitable for oral administration.

Assignees

• Pierre Fabre Dermo Cosmetique
• Pf Medicament

Inventors

• Mandeau Anne
• Talon Christian

Classifications

• A61P17/00

  Drugs for dermatological disorders · CPC title

• A61K8/9794

  Liliopsida [monocotyledons] · CPC title

• A61K8/9789

  Magnoliopsida [dicotyledons] · CPC title

• A61K8/9741

  Pteridophyta [ferns] · CPC title

• A61K36/9066

  Curcuma, e.g. common turmeric, East Indian arrowroot or mango ginger · CPC title