Calcium citrate malate composition

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 59/265 (2006.01) C07C 51/41 (2006.01)

Patent

CA 2085008

A metastable complex of calcium, citrate and malate is disclosed. This material is highly bioavailable, and is soluble in both neutral and acid solutions. The salt is prepared by the reaction of calcium carbonate, calcium hydroxide or calcium oxide with citric and malic acids in aqueous solution. The reaction mixture is dried at a temperature of less than 100°C, and the resultant solid is a metastable solid. The solid can be ground to reduce the particle size for easier tabletting or adding to foods and beverages. Preferred salts are neutral and acidic salts which can be expressed by molar ratios.

L'invention porte sur un complexe métastable de calcium, de citrate et de maléate. Ce complexe est fortement biodisponible et soluble dans les solutions aussi bien neutres qu'acides. Le sel est préparé par réaction du carbonate de calcium, de l'hydroxyde ou de l'oxyde de calcium avec les acides citrique et maléique en solution aqueuse. Le mélange réactionnel est séché à une température inférieure à 100 degrés C, le solide résultant étant de nature métastable. Le solide peut être broyé pour réduire la taille des grains et ainsi faciliter sa transformation en comprimés ou son addition à des aliments et à des boissons. Comme sels, on privilégie les sels neutres et acides, qui peuvent être exprimés sous forme de rapports molaires.

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