Formation of stable submicron peptide or protein particles...

B - Operations – Transporting – 01 – J

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B01J 2/04 (2006.01) A61J 3/02 (2006.01) A61K 9/14 (2006.01)

Patent

CA 2691531

The present invention includes compositions and methods for preparing micron-sized or submicron-sized particles by dissolving a water soluble effective ingredient in one or more solvents; spraying or dripping droplets solvent such that the effective ingredient is exposed to a vapor-liquid interface of less than 50, 100, 150, 200, 250, 200, 400 or 500 cm-1 area/volume to, e.g., increase protein stability; and contacting the droplet with a freezing surface that has a temperature differential of at least 30° C between the droplet and the surface, wherein the surface freezes the droplet into a thin film with a thickness of less than 500 micrometers and a surface area to volume between 25 to 500 cm-1.

La présente invention concerne des compositions et des procédés de préparation de particules de la taille du micron ou du sous-micron en faisant dissoudre un ingrédient efficace soluble dans l'eau dans un ou plusieurs solvants; en pulvérisant ou en laissant tomber goutte à goutte des gouttelettes de solvant de sorte que l'ingrédient efficace est exposé à une interface vapeur-liquide inférieure à 50, 100, 150, 200, 250, 200, 400 ou 500 cm-1 surface/volume pour, par exemple, augmenter la stabilité de protéine; et en mettant en contact la gouttelette avec une surface de congélation qui a un différentiel de température d'au moins 30 °C entre la gouttelette et la surface, où la surface congèle la gouttelette en un film mince avec une épaisseur inférieure à 500 micromètres et une surface par rapport au volume entre 25 et 500 cm-1.

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