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US 7,968,320 B2Granted
Stabilized liquid yeast preparation, a method for producing the same, and the use thereof
AssigneeLallemand USA, Inc.
InventorsRichard Degré, Kevin Kraus, Zhigen Zhang
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Abstract
The present invention relates to a novel stabilized liquid yeast preparation which contains a polyhydroxy compound, preferably glycerol, and a gum, comprising carob, guar, tragacanth, arabic or xanthan gum, preferably xanthan gum. The invention also relates to a method for producing said preparation as well as the use of the same.
Claims19
A stabilized liquid yeast composition for ethanol production comprising yeast in combination with one or more gums and one or more polyhydroxy compounds,
- wherein the yeast is of a genus Saccharomyces, and
- wherein the gum is present at about 0.03 to about 1% by weight of the yeast, and
- wherein the polyhydroxy compound is present at about 1 to 5% by weight of yeast wherein the composition has a fermentative activity of at least 82% after 45 days, and an ethanol yield greater than that of conventional liquid yeast and compressed yeast compositions.
A method of stabilizing a yeast composition for fuel ethanol production comprising:
- providing a yeast of genus Saccharomyces,
- combining the yeast with a gum and a polyhydroxy compound so as to form a yeast composition,
- wherein the gum is present at about 0.03 to about 1% by weight of the yeast,
- wherein the polyhydroxy compound is present at about 1 to 5% by weight of yeast, and
- wherein the yeast composition provides greater stability and greater activity compared to conventional liquid yeast and compressed yeast compositions, wherein said composition has a fermentative activity of at least 82% after 45 days, and has an ethanol yield greater than that of conventional liquid yeast and compressed yeast compositions.
2 more elements
Dependencies are inferred from the claim text.