Search results
Results from the WOW.Com Content Network
Lager yeast normally ferments at a temperature of approximately 5 °C (41 °F) or 278 k, where Saccharomyces cerevisiae becomes dormant. A variant yeast known as Saccharomyces cerevisiae var. diastaticus is a beer spoiler which can cause secondary fermentations in packaged products. [68]
Saccharomyces cerevisiae, the yeast commonly used as baker's yeast. Gradation marks are 1 μm apart.. Baker yeast is the common name for the strains of yeast commonly used in baking bread and other bakery products, serving as a leavening agent which causes the bread to rise (expand and become lighter and softer) by converting the fermentable sugars present in the dough into carbon dioxide and ...
Although kveik is a domesticated brewer's yeast it differs from most modern brewer's yeast in several ways: [5] It can ferment at much higher temperatures without causing off-flavors. Ordinary brewer's yeast will usually produce off-flavors above 25C (77F), but kveik can go as high as 43C (109F) without ill effects.
By the late 18th century two yeast strains used in brewing had been identified: Saccharomyces cerevisiae (top-fermenting yeast) and S. pastorianus (bottom-fermenting yeast). S. cerevisiae has been sold commercially by the Dutch for bread-making since 1780; while, around 1800, the Germans started producing S. cerevisiae in the form of cream.
Saccharomyces boulardii is a tropical yeast first isolated from lychee and mangosteen peels in 1923 by French scientist Henri Boulard.Although early reports claimed distinct taxonomic, metabolic, and genetic properties, [1] S. boulardii is a grouping of S. cerevisiae strains, all sharing a >99% genomic relatedness.
The common incubation conditions are aerobic atmosphere, temperature 25 °C for a period of 5 days. Nevertheless, a higher incubation temperature (30 °C) and shorter incubation time (3 days) can be applied for Z. bailii, as the yeast grows faster at this elevated temperature. [14]
The skins included in the fermentation of red wine provide some nutrients to the yeast. A byproduct of the energy created during fermentation is heat. which raises the temperature of the fermenting must as the yeast works. When temperatures near 104°F (40°C), activity slows and yeast starts to die. If temperatures stay high and the yeast ...
Saccharomycodes ludwigii is a yeast species best known for being a contaminant in alcohol and fruit juice production. [1] It is highly resistant to typical environmental stressors such as high temperature, high sugar concentration, and high sulfur dioxide concentration. [2]