High density yeast preparation, a method for producing the...

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 1/16 (2006.01) C12N 1/18 (2006.01)

Patent

CA 2074267

A novel high-density liquid or past yeast preparation, which comprises approximately 1-20% (w/w) of a poly- hydroxy compound selected from a group comprising propylene glycol, glycerol, non-fermentable mono- or oligosaccharides or sugar alcohols, soluble oligo- or polymeric carbohydrates and polyethylene glycol, or mixtures thereof, and fresh yeast. The high-density yeast preparation has a density of more than 800 g yeast (27-29% dry matter) per 1 liter of the preparation, and the concentration of the polyhydroxy compound in the extracellular liquid is 5-50% (w/v). The preparation has an improved capability of regaining its activeness, it dissolves instantly and is easily batched, uniformly suspendable and tolerant of repeated freezing and thaw- ing. The liquid high-density yeast preparation has a viscosity of less than 200 centiPoise (cP) at 20ÀC. Methods for producing the high-density yeast preparation as well as its use for the preparation of improved quality baker's, brewer's, distiller's and wine yeast are disclosed.

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