Process for extracting plants

Patent metadata

Field	Value
Publication number	US-11304891-B2
Application number	US-202016883058-A
Country	US
Kind code	B2
Filing date	May 26, 2020
Priority date	May 28, 2019
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

Abstract

A process for the preparation of a plant extract enriched in polyphenols and/or substantially free of simple sugars, as well as the plant extract thus obtained, which may be added to a cosmetic composition. Also, the use of a yeast of the variety Saccharomyces cerevisiae var. bayanus for the removal of simple sugars in a plant extract.

First claim

The invention claimed is:

1. A process for the preparation of a cosmetic flower extract enriched in polyphenols and/or substantially free of simple sugars, comprising the steps of:
fermenting a flower extract having a dry matter content in water in a range of 5% to 30% (weight/weight) with a yeast belonging to the variety Saccharomyces cerevisiae var. bayanus.

2. The process according to claim 1 comprising, prior to the fermentation step, the preparation of the flower extract by means of the following steps:
a) extracting at least one flower with at least one alcoholic solvent and/or water to obtain a mixture;
b) filtering the mixture obtained in a) in order to remove plant residues to obtain a mixture without plant residues;
c) optionally, decolorizing the mixture obtained in step b); and
d) removal of the solvent and concentration of the extract obtained, the extract having dry matter content in water in a range of 5% to 30% (weight/weight).

3. The process according to claim 1 , wherein the flower is a flower of Lilium candidum, Myosotis sylvatica, Sambucus sp., Camellia sp., Primula sp., Polianthes tuberosa, Jasminum grandiflorum, Plantago lanceolata, Cydonia oblonga, Prunus armeniaca or Plumeria sp.

4. The process according to claim 1 , wherein the step of fermenting is carried out by means of a leaven prepared from the fermentation of a concentrated flower extract with the strain of Saccharomyces cerevisiae var. bayanus.

5. The process according to claim 1 , wherein the fermented flower extract comprises 5.00 to 100.00% of polyphenols by weight.

6. The process according to claim 5 , wherein the fermented flower extract comprises 5.00 to 85.00% of polyphenols by weight.

7. The process according to claim 6 , wherein the fermented flower extract comprises 55.00 to 85.00% of polyphenols by weight.

8. The process according to claim 1 , wherein the fermented flower extract comprises less than 20.00% by weight of simple sugars.

9. The process according to claim 8 , wherein the fermented flower extract comprises less than 5.00% by weight of simple sugars.

10. The process according to claim 9 , wherein the fermented flower extract comprises less than 1.00% by weight of simple sugars.

11. The process according to claim 1 , wherein the fermented flower extract is free of simple sugars.

12. The process according to claim 1 , comprising, prior to the fermentation step, the preparation of the flower extract by means of the following steps:
a) extracting at least one flower with at least one alcoholic solvent and/or water to obtain a mixture;
b) filtering the mixture obtained in a) in order to remove plant residues to obtain a mixture without plant residues;
c) decolorizing the mixture obtained in step b) by contacting with activated carbon; and
d) removal of the solvent and concentration of the extract obtained, the extract having dry matter content in water in a range of 5% to 30% (weight/weight).

Assignees

• Chanel Parfums Beaute

Inventors

• Toribio Alix
• Legangneux David
• Cocandeau Vincent

Classifications

• A61K8/347 Primary

  Phenols · CPC title

• A61Q19/08

  Anti-ageing preparations · CPC title

• A61K8/9794

  Liliopsida [monocotyledons] · CPC title

• C12R2001/865

  Saccharomyces cerevisiae · CPC title

• A61K2800/10

  General cosmetic use · CPC title