Societe D'exploitation De Produits Pour Les Industries Chimiques Seppic

Biotechmarine

Erwan Le Gelebart

Laetitia Cattuzzato

Sandy Dumont

Cécile Bize

Jerome Loeuil

Jérôme Loeuil

Disclosed is a method for obtaining a unialgal biomass of cells of small multicellular macroalgae, including: preparing a unialgal sample of cells of multicellular macroalgae from a sample of microalgae taken from the natural environment; culturing the unialgal sample of cells of multicellular macroalgae obtained in step in sea water to which at least one nitrogen source is added, in order to obtain an aqueous suspension of the unialgal biomass of cells of small multicellular macroalgae; a step of harvesting the unialgal biomass of cells of small multicellular macroalgae from the aqueous suspension obtained at the end of step; and a step of producing a powder of the unialgal biomass of cells of small multicellular macroalgae obtained in step. Also disclosed is glycolic extract of the aforementioned biomass, to a method for producing the extract, to the use thereof in cosmetics and pharmaceuticals, and to compositions containing same.

Method for culturing cells ofred algae, method for obtaining an extract of the biomass thereof, and use of same in cosmetics

Disclosed is a lipophilic extract of brown algae gametophytes obtained by the method including the following consecutive steps: &#x2014;a Step A) for preparing a hydro-alcoholic suspension of gametophyte cells by mixing an aqueous suspension of brown algae gametophyte cells with at least one aliphatic alcohol including 1 to 4 carbon atoms; &#x2014;a Step B) for mixing the hydro-alcoholic suspension of algae gametophyte cells, obtained in Step A), with at least one triglyceride from fatty acids that include 8 to 22 carbon atoms; &#x2014;a Step C) for adding water to the multiphase mixture obtained in Step B); and &#x2014;a Step D) for isolating the lipophilic extract of brown algae gametophytes from the mixture obtained in Step C). Also disclosed are the cosmetic and pharmaceutical use of the extract.

Obtaining an extract from brown algae gametophytes, and use of said extract as a cosmetic anti-aging active principle

Growing community of inventors

Quemper Guezennec, France

Erwan Le Gelebart