Patent ID: 7270839

Claim:
A method of obtaining an extract from a photosynthetic organism, said method comprising the steps of: a) providing a suspension of organism constituents that contain thylakoids; b) disrupting the constituents while recovering thylakoids under light conditions which minimize light flux, in a medium having a viscosity comprised between 1 to 1.3 centipoise and a pH above 2 and below 10; the medium being added in a volume calculated upon the following equation: ( Volume ⁢ ⁢ of ⁢ ⁢ medium + organism ⁢ ⁢ constituents ⁢ ⁢ water ⁢ ⁢ content ) ( Organism ⁢ ⁢ constituents ⁢ ⁢ dry ⁢ ⁢ weight ) > 10 whereby a first extract essentially constituted of thylakoids, cells debris/membranes, and a liquid phase is obtained, said thylakoids comprising organized photosynthetic pigments; c) separating thylakoids, cell debris/membranes and liquid phase from each another, to form a second, third and fourth extracts essentially constituted by isolated thylakoids, cell debris/membranes, and a liquid phase, respectively; and d) eliminating any electron donor from said first, second and third extracts.