Storage of microorganisms, cells and tissue

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 1/04 (2006.01) A61K 35/74 (2006.01)

Patent

CA 2379231

A composition for preserving viable microorganisms, cells or tissue comprises (a) a preservative combination of (i) a non-reducing disaccharide and (ii) a bulking agent; and (b) a buffer. Also described is a method of preserving viable microorganisms, cells or tissue, comprising combining viable microorganisms, cells or tissue with a preserving solution comprising a non- reducing disaccharide, drying the combination to form a dried preparation having a solids content of at least 80 % by weight, and counting the viable microorganisms, cells or tissue in the dried preparation, whereby the dried preparation can be combined with aqueous buffer to yield an aqueous preparation comprising a predetermined count of viable microorganisms, cells or tissue.

La présente invention concerne une composition permettant de conserver des micro-organismes, cellules et tissus viables, comprenant: (a) une combinaison de conservation constituée (i) d'un disaccharide non réducteur et (ii) d'un agent gonflant; et (b) un tampon. Cette invention concerne également un procédé permettant de conserver des micro-organismes, cellules et tissus viables, comprenant les étapes suivantes: combinaison des micro-organismes, cellules et tissus viables avec une solution de conservation comprenant un disaccharide non réducteur; séchage de la combinaison pour former une préparation sèche ayant une teneur en extrait sec d'au moins 80 % en poids; et contage des micro-organismes, cellules et tissus viables dans la préparation sèche, la préparation sèche pouvant être combinée avec un tampon aqueux pour obtenir une préparation aqueuse comprenant un nombre prédéterminé de micro-organismes, cellules et tissus viables.

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