Used in the beer yeast. Many for saccharomyces cerevisiae (Sac - charomyces cerevisiae) of different species. E.C.H ansen (1883) began brewing beer yeast cultivation and use it for. Under the Danish institute of Carlsberg brewing yeast is famous. Other famous beer yeast are German Saaz type yeast below, English, Japanese and other countries of the yeast. The same as the other culture yeast cells form, for nearly globose, ellipsoid, different and wild yeast. Beer yeast is commonly used on beer production above the typical yeast fermentation. In addition to used in beer, alcohol and other drinks wine, also can be fermented bread. Bacteria vitamin, protein content is high, can make edible, medicinal and feed yeast, from the extraction of cytochrome C, nucleic acid, glutathione, coagulation, coenzyme A, adenosine triphosphate, etc. In the microorganism determination of vitamin, commonly used beer yeast determination of biotin, pantothenic acid, thiamine, pyrazole compound alcohol and inositol, etc.
Beer yeast in wort colonies on AGAR medium for the milky white, luster, smooth and neat. Asexual reproduction is given priority to with budding. Can ferment glucose, sucrose, maltose, galactose and not ferment lactose and melibiose.
According to the cell length and width, the proportion of the beer yeast can be divided into three groups. The first group of cells for more, ovoid, or ovoid (cell length/width < 2), mainly used for alcohol fermentation, fermented drinks wine and bread production. The second group of cells is given priority to with oval and long oval shape, also has a short round or oval cells (cell length/width material 2). This kind of yeast is mainly used for wine and fruit wine, also can be used for beers, spirits and yeast production. A third group of cells to oblong cells (length/width > 2). This kind of yeast is high osmotic pressure and high concentration of salt resistance, suitable for using sugarcane molasses as raw material to produce alcohol.
Activity purpose:
All kinds of wine fermentation
Inactive application:
Pharmaceutical raw materials, feed protein source, medical reagent fermentation protein source (hereinafter referred to as nitrogen source) fermentation food nutrition, the fourth generation of condiments raw materials (by amino acids in flavor, beef flavor, chicken, shrimp, etc.).
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